User`s Manual - Cornell University Nutrient Management Spear
Contents
1. 450 00 29 4 What is the value fertilizer replacement and cost of exporting manure Export Sheet In this section white cells boxes are open for data entry and yellow cells boxes are calculated values The yellow cells present results based on data entered into white cells Yellow cells are locked and cannot be manipulated Section 1 Characterize Exports Figure 23 1s a screen shot of the Export sheet Characterize Exports entry section 1 1 Characterize Exports Application Rate 12 000 gallons acre Distance one way from source ee miles Figure 22 Information entered into section 1 includes the export field manure application rate gallons acre or tons acre and the distance in miles from the manure source to the export field a Application Rate enter the rate at which you will apply exported manure The units gallons acre or tons acre are based on your selection in Section 4 on the Fertilizer Replacement Value sheet b Distance one way from source enter the distance in miles that you would travel one way to ship manure c Print Sheet button allows you to print the entire page for your records Section 2 Value of manure to the field receiving manure fertilizer replacement value Figure 24 is a screen shot of the Export sheet Value of manure to the field receiving manure fertilizer replacement value section 2 2 Value of manure to the field receiving manure fertilizer replacement2. field 36 4 ammonium N Ibs acre 63 2 organic N Ibs acre 99 6 lbs total N acre 99 6 Ibs lt 100 Ibs needed so all currently available N is credited Total N as needed value field 1 821 ammonium N 3 159 current year organic N 4 980 P20 value as needed field P20 as needed lbs acre value of fertilizer P2O5 field size acres P20 as needed lbs acre 62 250 lbs manure acre 0 19 manure P20 118 Ibs P Os acre P20 value as needed field Only 25 lbs acre P20 are need for current crop therefore 25 lbs P O acre 0 60 value of fertilizer P O 15 00 acre 100 acres 1 500 17 KO value as needed field KO as needed lbs acre value of fertilizer KO field size acres K gt Os as needed Ibs acre 62 250 lbs manure acre 0 23 K0 in manure 143 lbs K O acre KO value as needed field Only 20 lbs acre K O are need for current crop therefore 20 Ibs K gt O acre 0 70 value of fertilizer K O 14 00 acre 100 acres 1 400 Application cost field 10 00 acre 100 acres 1 000 Total as needed Value field 4 980 N as needed value 1 500 P20 as needed value 1 400 KO as needed value 1 000 cost of fertilizer application 8 880 total as needed value 18 Manure Cost Manure costs are shown in three columns hour acre and field Figure 15 Manure Cost Loading Fuel _ labor Loading Total Haul
3. Farm Manure Application Costs for 250 acres at average farm application rate Farm application Cost per Whole Farm average a spread gallon Loading 75 machinery hours 225 9 0 000 0 001 0 001 0 001 Spreading 250 acres Fuel g 4 k e 0 000 Labor 36 1 d 0 000 Incorporation 0 acres incorported Fuel Labor Manure Equipment Repairs and Maintenance Total Operating Costs Ownership Costs Depreciation s 20 25 Interest on Equity 9 27 Insurance d 450 9 1 80 Total Ownership Costs 7630 31 32 0 005 Total Operating and Ownership Costs 15 835 f 63 34 9 0 011 Figure 21 Whole farm manure cost output details operating and ownership costs for manure management on an annual whole farm per acre spread and per gallon or ton applied basis Costs are displayed on a whole farm basis cost per acre and the cost per gallon or ton Whole farm costs are detailed below using the example above to illustrate the calculations The cost per 26 acre is the whole farm cost divided by the annual number of manure acres entered into the Whole Farm Manure Costs Sheet 2a The cost per gallon is the whole farm cost divided by the annual quantity of manure handled entered into the Whole Farm Manure Cost Sheet 1b Loading machinery hours total manure spreader capacity load time 60 1 500 000 gal 10 000 gallons 30 60 75 hours a Loading fuel loading machinery hours loading fuel efficiency loading
4. 4 980 P20 7 097 K20 10 022 Application 1 000 Total 23 099 Figure 14 The as applied and as needed manure value is displayed for each nutrient and the foregone cost of commercial fertilizer application As Needed Value As Needed is the fertilizer replacement value of manure when only current crop N P205 and KO needs are credited no value is credited to nutrients added over the crop need The As Needed value in this example is calculated 7 500 gallons acre application rate 8 3 Ibs gallon density 16 62 250 lbs manure acre We need to know the N value P20 value KO value a N value as needed field Value of ammonium N from current application as needed field Value of organic N from current application as needed field 1 Ammonium N from current application as needed Ibs acre 62 250 lbs manure acre 65 ammonium conservation 0 09 NHu N 36 4 Ibs NHz N acre Value of ammonium N from current application as needed field 36 4 NH N Ibs acre 0 50 value of fertilizer N 18 21 acre 100 acres 1 821 11 Organic N from current application as needed Ibs acre 62 250 lbs manure acre 35 current year mineralization 0 29 organic N 63 2 lbs organic N acre in current year application Value of organic N from current application as needed field 63 2 organic N lbs acre 0 50 value of fertilizer N 31 59 acre 100 acres 3 159 iii Total N value as needed
5. Applying manure during the growing season and incorporating it increases the amount of ammonium N that can be credited and decreases N losses Ammonium N availability coefficients used are listed in Table 2 Ammonium N credit lbs acre 62 250 lbs manure acre 65 conservation 0 09 NH4 36 lbs N acre Current Year Organic N Credit The availability of Organic N is based on mineralization rates that have been calibrated for corn in New York State The mineralization estimates are based on the percent dry matter content of different manure sources Expected availability percentages of the original manure are listed in Table 1 Current Year Organic N Credit lbs acre is the portion of the organic N available to the crop in the application year In the example manure organic N composition is 0 29 62 250 Ibs manure acre 35 current year mineralization 0 29 organic N in manure 63 lbs organic N acre in current year application Organic N Credit in Future from Current Application Nitrogen expected to be released in future years from the current application are calculated based NYS standard mineralization rates for corn Table 1 These values are included in the Max Value and As Applied Value estimates In our example future organic N from current application 62 250 Ibs manure acre 17 future years mineralization 0 29 organic N in manure 31 lbs organic N acre in future year s application N Available from Current Applicatio
6. 31 4 Net Income or Cost of Manure Export Net value cost Net value cost As Applied As Needed gallon S acre gallon Jacre Return to Operating Costs 002 272 18 Return to Operating Costs 0 00 46 10 Return to Ownership amp Return to Ownership amp Operating Costs 0 01 145 50 Operating Costs 0 01 80 58 Figure 25 The return to operating costs and return to operating and ownership costs associated with manure applications to the export field are shown for applications valued as applied and applications values as needed per unit and per acre in the Export sheet section 4 This section summarizes the above information to generate a net profit or loss statement for the export of manure Net values are reported for both the As Applied and As Needed bases and expressed in terms of unit ton or gallon and acre Remember that the As Applied value takes into account all the nutrients put onto the land while the As Needed value only considers the nutrients actually required by the crop that year a Return to Operating Costs subtracts the cost of equipment operation Section 3 from the value of manure from Section 2 b Return to Ownership and Operating Costs subtracts the cost of equipment operation and ownership from Section 3 from the value of manure Section 2 32 5 How much time machinery and labor will it take to spread manure Time Sheet Figure 27 is a screen shot of the Manu
7. 8 1 as applied as needed lumber of loads T5 Operational FS Operational Hours per field Cost Hours per field Cost oading 38 562 50 38 gt 562 50 lauling 460 ksh mAs ister Application 33 1 100 00 33 1 100 00 ncorporation 50 2100 00 50 2 100 00 otal hours 581 23 098 75 243 9 880 00 Figure 17 Display of the time needed to apply manure according to the parameters entered into the calculator 22 3 What are the operating and ownership costs for my manure machinery Whole Farm Manure Cost Sheet In this section white cells boxes are open for data entry and yellow cells boxes are calculated values The yellow cells present results based on data entered into white cells Yellow cells are locked and cannot be manipulated Section 1 Farm Manure Use Figure 19 is a screen shot of sections 1 and 2 of the Whole Farm Manure Cost sheet 1 Farm Manure Use Units Total Manure to Spread 1 500 000 gallons Average Application Rate gallons acre 2 Manure Spreading Total Manured Acres acres Total Hours to Spread hours Average Rate acres hour Total Costs Ihr Fuel Efficiency E E gal hour Average per acre spread cost lacre Figure 18 Annual whole farm manure management information including the total amount of manure spread the total annual manure acres and the total hours required are entered into sections 1 and 2 of the Whole Farm Manure Cost sheet a Units Two choices tons or gallons are presented and
8. N from current application as applied Ibs acre 62 250 lbs manure acre 35 current year mineralization 0 29 manure organic N 63 2 lbs organic N acre in current year application Value of organic N from current application as applied field 63 2 current year organic N Ibs acre 0 50 value of fertilizer N 31 59 acre 100 acres 3 159 iii Total N value as applied field 1 821 ammonium N 3 159 current year organic N 4 980 b P20 as applied field P20 as applied Ibs acre value of fertilizer P2O5 field size acres 15 P20 as applied Ibs acre 62 250 lbs manure acre 0 19 manure P20 118 lbs P Os acre P20 value as applied field 118 lbs P O acre 0 60 value of fertilizer P205 70 97 acre 100 acres 7 097 c K O as applied field KO as applied Ibs acre value of fertilizer K2O field size acres 62 250 lbs manure acre 0 23 manure KO 143 lbs K O acre K20 as applied value as applied field 143 lbs K O acre 0 70 value of fertilizer K2O 100 22 acre 100 acres 10 022 d Application cost field 10 00 acre 100 acres 1 000 e Total As applied Value field 4 980 N as applied value 7 097 P20 as applied value 10 022 KO as applied value 1 000 cost of fertilizer application 23 099 total as applied value see Figure 14 as applied value as needed value anure Value S Tield 3 field N 4 980
9. Rate entry will be updated to the level that will balance for the nutrient selected Figure 6 These buttons found on the Fertilizer Repl Val h Wad Iculat d Balance to N Balance to P205 Balance to K20 ep acement alue sS eet wi Calculate an requirements requirements requirements enter the manure application rate equal to the crop nutrient needs 2 display an ammonia Application method Ammonia Manure Nutrient Credits and Conservation Table Crop Nutrient Requirements conservation graph Figure 7 and 3 display a graph comparing nutrients supplied by manure to crop nutrient requirements Figure 8 Manure Application Method and Timing Effect on Ammonium Nitrogen Availability from Manure of Manure Ammonium N Utilized by the Crop Injected as Spring Spring Spring Spring Spring Topdressed or sidedress on row incorporated within incorporated within incorporated within incorporated within incorporated within incorporated after crops 1 day 2 days 3 days 4 days 5 days 5 days Manure Application Method and Timing Figure 7 A graphical representation of manure application method and ammonium N conservation Manure Nutrient Credits and Crop Nutrient Requirements N Q1 O N oO oO Nutrients Ibs acre Manure N Supplied Crop N Requirement Manure P205 Crop P205 Manure K2O Crop K2O Supplied Requirement Supplied Requirement Figure 8 Graphical representation of manure nutrients delivered to the field compared
10. and K320 Field size acres Application rates gallons acre or ton acre Spreader capacity gallons or ton Operating costs fuel price hourly labor costs Fuel efficiencies average equipment speed miles hour for hauling acres hour for application and incorporation fuel consumption gallons hour 2 Whole Farm Manure Cost e Total manure to spread for the entire year gallons or tons e Total acres on which manure is spread and or incorporated e Total hours required to haul spread and incorporate manure e Capital costs purchase and salvage values of equipment lifespan age repair costs of capital cost used by the business equipment insurance cost value of insured equipment Information Taken from Other Sheets e Fuel efficiency Fertilizer Replacement Value Section 5 3 Export e Field size acres e Application rate gallons acre or ton acre same units as in Fertilizer Replacement Value e Distance from source miles one way e Crop needs Ibs acre of N P205 and K20 Information Taken from Other Sheets e Manure analysis and density Fertilizer Replacement Value Section 1 Fertilizer values and application cost Fertilizer Replacement Value Section 2 Application units Fertilizer Replacement Value Section 4 Spreader capacity Fertilizer Replacement Value Section 4 Hauling speed Fertilizer Replacement Value Section 5 Total gallons of manure to spread Whole Farm Manu
11. by dividing the incorporated acres by the hours required 3a 3b above e Fuel hr the total fuel cost hour is calculated by multiplying fuel cost gal and fuel efficiency gallons hour entered in Section 5 of the Fertilizer Replacement Value f Labor hr the total labor cost hour was entered in Section 5 of the Fertilizer Replacement Value sheet g Total Costs hour the sum of the fuel and labor costs above 3e 3f h Average per Acre Incorporated Cost acre this value is Total Costs 3g divided by the average rate 3d Section 4 Manure Hauling a Total Hauling Machinery Hours enter the total hours logged on hauling machinery during one year b Fuel Efficiency gallons hour this value is taken from Section 5 of the Fertilizer Replacement Value sheet c Fuel hour the total fuel cost acre is calculated by multiplying the Fuel Efficiency by the Fuel Cost input from the Fertilizer Replacement Value sheet in Section 5 24 d Labor hour this value is taken from the Fertilizer Replacement Value sheet outlined above in Section 5 e Total hour the sum of the Fuel and Labor costs above 4c 4d f Average per mile costs mile this value is calculated by dividing the Total costs 4e above by the average speed miles per hour entered in Section 5 of the Fertilizer Replacement Value sheet Section 5 Capital Costs Figure 21 1s a screen shot of the Whole Farm Manu
12. fuel cost 75 1 gal per hour 3 00 per gallon 225 00 b Loading labor loading machinery hours loading labor cost 75 12 00 per hour 900 00 c Hauling machinery hours entered number of annual hauling machinery hours 4a 70 hours d Hauling fuel hauling machinery hours hauling fuel cost per hour 70 hours 30 00 per hour 2 100 00 e Hauling labor hauling machinery hours hauling labor cost 70 hours 12 00 per hour 840 00 f Spreading acres entered number of acres receiving manure 2a 250 acres g Spreading fuel total hours to spread entered 2b spreading fuel cost per hour 30 hours 21 00 per hour 630 00 h Spreading labor total hours to spread entered 2b spreading labor cost per hour 30 hours 12 00 per hour 360 00 i Incorporation acres entered number of acres manure incorporation 2a 0 acres j Incorporation fuel Incorporation acres average incorporation rate incorporation fuel cost per hour 0 acres 2 acres per hour 30 00 per hour 0 00 k Incorporation labor Incorporation acres average incorporation rate incorporation labor cost per hour 0 acres 2 acres per hour 12 00 per hour 0 00 27 Manure Equipment Repairs and Maintenance sum of all manure machinery annual repairs and maintenance entered 5 g percent of time used for manure handling 5b 2 500 sprea
13. the crop to be K 20 _ ibsiacre defined Figure 3 FieldSize 100 _ acres Manure nutrients N P20 and KO cannot be adjusted to fit crop needs like fertilizer In order to credit only the nutrients in the manure needed by the crop be sure to indicate what your crop nutrient needs are Cornell nutrient guidelines can help determine crop nutrient needs based on soil type field history and soil test levels Cornell nutrient guidelines for N P and K can be found at http nmsp cals cornell edu guidelines nutrientguide html Figure 3 Section 3 of the calculator with example data Section 4 Manure Application 4 Manure Application Application Rate 750 Jo alions acre Method and Timing Spring incorporated within 1 day Figure 4 Data entry for section 4 of the calculator with example data This section allows different combinations of applications rates and methods to be entered to achieve the desired nutrient credit for the current crop Units Two choices tons or gallons are presented and they must be selected from the pull down menu Place the cursor in the data entry box and then click the down pointing arrow that appears on the right a list will be pulled down and unit selection can be made a Application Rate Estimate an application rate that is appropriate for a particular field This value can be manually entered or automatically calculated using the Balance to buttons to the night b Appl
14. value Applied Iplied Va Crop Needs As Needed Value Ibs acre S gallon Ibs acre S gallon lacre N 159 N 125 001 6250 P205 POs 50 000 3000 KO 229 KO 50 000 3500 Fert Application Fert Application 000 10 00 Total 003 363 58 Total 001 137 50 Figure 23 The export field s crop nutrient requirements are entered in the Export sheet section 2 The fertilizer replacement value as applied and as needed are also shown in this section a Crop Needs Ibs acre enter the crop requirements in Ibs acre for N P205 and K320 30 b Output Values the sheet calculates the value of the manure as fertilizer material based on nutrient inputs and values from Sections 1 and 2 of the Fertilizer Replacement Value sheet and the acreage and rate parameters on this sheet N P205 and K2O are given in terms of the total amount applied and the value per unit ton or gallon and per acre The Fert Application value is the one entered in Section 2 of the Fertilizer Replacement Value sheet As Needed values are also reported Section 3 Cost of transporting and spreading manure to the receiving field operating and ownership costs Figure 25 is a screen shot of the Export sheet Cost of transporting and spreading manure to the receiving field operating and ownership costs section 3 3 Cost of transporting and spreading manure to the receiving field operating and ownership costs Oper
15. 0 118 28 70 97 acre 94 62 load and 0 01 gallon Total K 0 Value This is the product of the K2O from Current Application value and the K gt O value listed in section 2 Fertilizer Costs In our example the K20 fertilizer value is 0 70 lb and the total KO as applied value 0 60 118 28 100 22 acre 133 63 load and 0 01 gallon As Applied Value As Applied Value is the fertilizer replacement value of manure discounting N lost through volatilization and excess Ammonium N applied while crediting future organic N P205 and KO for current and future crops This value can be realized 11 through current application methods credited organic N mineralization from the manure and annual soil testing plus the fertilizer application cost that was replaced In our example the total as applied value 49 80 70 97 100 22 10 00 230 99 per acre 307 98 per load and 0 03 per gallon m As Needed Value As Needed is the fertilizer replacement value of manure when only current crop N P20 and K2O needs are credited no value is credited to nutrients added over the crop need In our example manure applications meet or exceed all crop nutrients so the as needed value is the same as the product of the crop nutrient requirements and the nutrient value as detailed in Table 3 Table 3 Example as needed fertilizer replacement value of manure only credits the lesser amount of the current year crop nutrient requirem
16. MANURE VALUE COST AND TIME MANAGEMENT CALCULATOR USER S MANUAL Caroline Rasmussen Margaret Dunn Patty Ristow Quirine Ketterings Tim Shepherd Karl Czymmek FEBRUARY 201 1 Nutrient Management Spear Program Collaboration among the Cornell University Department of Animal Science PRODAIRY and Cornell Cooperative Extension http nmsp cals cornell edu Contents Ms HAVE OO 1 OM esse ee ya ses cece eemeccissien E E E E E E E EN i kons Needed to Pi Out SPCC IS aoa cep eecrtecannns desne EEEE EE EEE EE EE 2 2 What is the break even hauling distance for my manure ssenesssessssseerrssssssssseeressssssseeeeees 3 Fertilizer Replacement Value Sheet 3 What are the operating and ownership costs for my manure machinery ccccccesseeeeees 23 Whole Farm Manure Cost Sheet 4 What is the value fertilizer replacement and cost of exporting manure cceeeeeeeeeeeees 30 Export Sheet 5 How much time machinery and labor will it take to spread manure ccsseeeeeeeeeeees 33 Time Sheet Correct citation Rasmussen C M Dunn P L Ristow Q M Ketterings T Shepherd K Czymmek 2010 Manure Value Cost and Time Management Calculator User s Manual Department of Animal Science Cornell University Ithaca NY 38 pages Downloadable from http nmsp cals cornell edu projects curriculum html For more information Contact Quirine Ketterings at the Nutrient Management Spear P
17. adings but not both d Application speed loads hr enter in the number of loads spread per hour e Hauling machinery hours and Spreading machinery hours the calculated hours spent on hauling or spreading Number of Loads divided by the Application Speed In the example first line es Hauling machinery hours 500 loads 1 2 hour load 250 However since the 3 machines are working at the same time and each piece hauls about 166 loads the clock time is 83 hours 166 1 2 hr Spreading machinery hours 500 loads 10 loads per hour 50 hours f Hauling clock hours and Spreading clock hours the calculated hours required per laborer running the equipment calculated as Hauling or Spreading machinery hours divided by the Hauling or Application Equipment Number 34 Total clock hours the larger of the Hauling or Spreading clock hours In our example since the application equipment and hauling equipment are working at the same time the one with the great time requirement will be the value used to calculate the total clock hours Total labor hours the Total clock hours times the number of people required to run the machinery the sum of the Application and Spreading Equipment Numbers In the example there are 4 employees each working 83 3 hours 4 83 3 333 hours Totals the manure loads machinery hours and clock hours are totaled 35
18. ating Costs Machine hours load S load S gallon Jacre Loading 0 50 T 50 0 00 9 00 Hauling 1 00 4 00 0 00 50 40 Application 0 28 l 9 17 0 00 11 00 91 40 126 68 Total Operating Costs T617 0 01 Ownership Costs 105 57 0 01 Operating Ownership Costs incorporation 0 42 17 50 000 21 00 Figure 24 The operating and ownership costs and machinery hours associated with manure applications to the export field are detailed by load per unit and per acre in the Export sheet section 3 These values are all calculated from the inputs above and on other sheets The average speed and application rates and efficiencies are used to generate the Machine hours load the expense per load gallon or ton and acre a Operating Costs calculates costs associated with hauling applying and incorporating manure using values given on the Fertilizer Replacement Value and Whole Farm Manure Costs sheets Costs are reported by load per unit ton or gallon and per acre b Total Operating Costs sums the calculated Operating Costs c Ownership Costs calculates the cost of owning machinery for the above operations based on inputs on the Whole Farm Manure Costs sheet d Operating Ownership Costs the sum of the Total Operating and Ownership Costs c d above Section 4 Net Income or Cost of Manure Export Figure 26 is a screen shot of the Export sheet Net Income or Cost of Manure Export section 4
19. der 1 00 1 000 0 45 2 950 Depreciation Depreciation is a method to to spread the cost of an asset over the useful life of the asset Depreciation purchase cost salvage value lifespan percent of time used for manure handling Spreader depreciation 35 000 5 000 10 1 0 3 000 Tractor depreciation 65 000 10 000 12 0 45 2 063 Farm depreciation spreader depreciation tractor depreciation 5 063 Interest on Equity Interest is charged on the asset equity un depreciated value to account for the opportunity cost of investing in the manure equipment instead of an alternative investment un depreciated value cost of capital percent of time used for manure handling Un depreciated value purchase cost salvage value purchase cost salvage value lifespan age Spreader un depreciated value 35 000 5 000 35 000 5 000 10 4 18 000 Spreader interest on equity 18 000 0 06 1 1 080 Tractor un depreciated value 65 000 10 000 65 000 10 000 12 2 45 833 Tractor interest on equity 45 833 0 06 0 45 28 1 238 Farm depreciation spreader depreciation tractor depreciation 2 318 o Insurance Total annual insurance charge is calculated from values entered in section 5i and 5 Equipment insurance cost per 1000 manure equipment amount insured 1000 6 00 75 000 1000
20. eductions and reductions made to reduce spilling Spreader capacity impacts the amount of trips the spreader or hauling trucks must make to a field to achieve a given manure application rate The number of trips the spreader or hauling trucks makes to a field changes the cost per field Make sure the spreader capacity is correct for the units and application method and timing entered d Nutrient Balance Check The nutrient balance check will allow you to see quickly if the current combination of manure analysis and application rate method and timing will allow you to meet crop requirements as entered in the Crop Requirement section The nutrient credits are calculated and highlighted in yellow The credited nutrients are calculated based on the manure analysis application rate timing and method Surplus nutrients more nutrient supplied by manure than required by the crop are displayed in black Nutrient deficits more nutrients required by the crop than supplied by manure are displayed in red Figure 5 Nutrient Balance Check Ibs a N K20 Required __100_ 25 20 __ ibsiacre Supplied Ibs acre Figure 5 The Nutrient Balance Check table indicates the difference between the N P20 and K2O required and supplied by manure in red if more nutrients are required than supplied and in black if more nutrients are supplied than required Clicking on the buttons shown in figure 6 will automatically balance for N P205 or K2O The Application
21. ent Note that the age must be less than the equipment lifespan g Repairs and Maintenance Per Year enter the average cost spent on non fuel maintenance and repairs of each piece of equipment h Cost of Capital the cost of capital is the annual rate of return expected on an alternative investment with a similar risk i Equipment Insurance Cost per 1000 enter the cost of insurance in per 1000 value of equipment insured 29 j Manure Equipment Amount Insured enter the value in of the manure equipment that is insured This will be used to calculate insurance expenses based on the value entered in 51 above k Add More Equipment button If you run out of room and have more equipment to enter click the Add more equipment button below the chart or scroll down below the output area You will find another similar chart where you can enter additional information Output Values and Tools There are several buttons found below the input chart e Add more equipment takes you to another chart below the report similar in structure to the equipment chart filled out above e Print Sheet generates a command to print the entire sheet e Return to Main Menu takes the user back to the starting page The chart shown in figure 22 summarizes the annual farm operating and ownership costs associated with the entered fuel and labor prices and efficiencies repairs and the ownership costs of the machinery complement
22. ent or the nutrients supplied by the current year manure Pe Nutrient Crop requirement Available from current year Ib fect hs cre manure application lbs acre o 96 050 49 80 T R N AD SE E 0 60 15 00 Application 810 00 Per toad 8118 40 Per gation 001 Section 6 Operating Costs and Fuel Efficiencies This section allows the user to define variable fuel labor costs associated with different manure spreading strategies Note that if application and incorporation are done simultaneously values representative of the total spreading incorporating activity should be entered once in only one of the provided fields Both application and incorporation should be filled out only if the two practices are done at different times see Figure 10 12 6 Operating Costs and Fuel Efficiencies Loading Fuelcost 3 00 gal Loading time 30 minutes load Labor cost 12 00 hour Fuel efficiency gaihour Hauling Fuel cost _ 3 00 Sigal Speed 10 0 milesimour Labor cost 12 00 hour Fuel efficiency 10 galhour Application Fuel cost 3 00 gal Speed ao __ aeres hour Labor cost 12 00 hour Fuel efficiency 7 garnour Incorporation Fuel cost 3 00 gal Speed 20 aeres hour Labor cost 12 00 hour Fuel efficiency 10 _ gal hour Figure 10 In this example manure application and incorporation are done consecutively not simultaneously by separate pieces of equipment and o
23. he crop machinery size etc The field capacity will be calculated as follows Field Capacity acres per hour width feet speed miles per hour field efficiency decimal 8 25 In this equation 8 25 is utilized to convert between acres and miles Clicking the button shown in figure 11 will take the user to a quick calculator is built into the Fertilizer Replacement sheet so that users can calculate more accurate application and incorporation speeds with information that they may have more readily on hand Figure 12 Calculate Application and Incorporation Speed Figure 1 Button to take you to the quick calculator for application and incorporation speed 13 Tool bar width feet speed s moh Field efficiency B percentage of theoretical field capacity Field capacity 5 0 acres nour Field Efficiency range Manure Spreader 10 20 Manure Spreader 30 Figure 12 Quick calculator for Chisel Plow 11 14 a5 se se Chisel Plow 16 3 determining application and incorporation speeds Section 6 Results Break even Hauling Distance Section 6 displays the value of the manure as a substitute for commercial fertilizer and the operating cost of hauling applying and incorporating the manure on the field described in Section 3 The break even hauling distance is the maximum one way distance in miles where costs incurred to haul manure to the specified field match the increase in value replacement va
24. ication Method and Timing Place the cursor in the data entry box and then click the down pointing arrow that appears on the right a list will be pulled down and a unit selection can be made Application method can be changed in combination with application rate to deliver the desired amounts of nutrients Choices are listed in Table 2 The main impact of application method and timing is on ammonium N conservation Injection or incorporation during the growing season helps conserve ammonium N Non incorporation of manure or applying manure in the fall leads to loss of the ammonium N in the manure Surface applications without incorporation will result in higher application costs due to the higher manure loading rates than would be needed to meet N needs when manure is incorporated Such higher application rates will also lead to increases in soil test P and K over time Table 2 Manure application methods and the impact on Ammonium N credits Manure Application Method Ammonium N Credited Lost Injected as sidedress on row crops 100 0 Spring incorporated within day 65 35 Spring Incorporated within 2 days 53 47 Spring Incorporated within 3 days 4 59 Spring Incorporated within 4 days 29 71 Spring Incorporated within 5 days 17 83 Topdressed or incorporated after 5 days 0 100 Fall incorporated or injected 0 100 Surface application on frozen or saturated ground 0 100 c Spreader Capacity Enter the actual capacity of the spreader given foaming r
25. imate the rate of decomposition of organic N in liquid lt 18 dry matter dairy manures in New York This sequence of numbers means that 35 of the organic N is mineralized and potentially taken up by the growing crop during the year the manure was applied 12 of the initial organic N application is mineralized and taken up during the second year and 5 is mineralized and taken up in the third year There is evidence that manure containing large amounts of bedding may mineralize at a slower rate than fresh manure Therefore the estimated availability of N during the year applied is reduced from 35 to 25 when the dry matter content of the manure exceeds 18 These decay series and those for other animal manures are listed in Table 1 Table 1 Decay series for stable organic N in manure by animal type A last year release rate of 12 indicates that an estimated 12 of the organic N applied in the manure is expected to be utilized by the crop a year after application Release rate for organic N in manure Total Present Year Last Year Two Years Ago Source Solids Decay current Decay lastyr Decay 2yrs Cows lt 18 35 12 5 Cows gt 18 25 12 5 Poultry lt 18 55 12 5 Poultry gt 18 55 12 5 Swine lt 18 35 12 5 Swine gt 18 29 12 5 Horses lt 18 30 12 5 Horses gt 18 25 12 5 Sheep lt 18 35 12 5 Sheep gt 18 29 12 5 Units Manure nutrient analysis can be presented in various units percent pounds per ton and pound
26. ing Fuel Labor Hauling Total Application Fuel 21 00 700 00 Labor 12 00 40000 Application Total 33 00 1 1 100 00 Incorporation Fuel 30 00 5 1 500 00 Labor 12 00 3 600 00 Incorporation Total 5 00 1 2 100 00 Total Operating Figure 15 Section 6 of the Fertilizer Replacement Value sheet details the operating costs associated with manure application a Loads to the field application rate spreader capacity field size 7 500 gallons 10 000 gallons 100 acres 75 loads field Loading fuel cost hour 3 00 gallon 1 gallon hour fuel efficiency 3 00 hour Loading fuel field Loading fuel cost hour number of loads to the field minutes per load 60 3 00 75 30 60 112 50 Loading labor cost hour 12 00 entered Loading labor field Loading labor cost hour number of loads to the field minutes per load 60 12 00 75 30 60 450 00 Hauling fuel cost hour 3 00 gallon 10 gallons hour fuel efficiency 30 00 hour 19 Hauling labor cost hour 12 00 entered Application fuel cost hour 3 00 gallon 7 gallons hour fuel efficiency 21 00 hour Application fuel cost field Application fuel cost hour field size acres speed acres hour 21 00 100 3 700 00 Application labor cost hour 12 00 entered Application labor field Applicat
27. ion labor cost hour field size acres speed acres hour 12 00 100 3 400 00 Incorporation fuel cost hour 3 00 gallon 10 gallons hour fuel efficiency 30 00 hour Incorporation fuel cost field Incorporation fuel cost hour field size acres speed acres hour 30 00 100 2 1 500 00 Incorporation labor cost hour 12 00 entered Incorporation labor cost field Incorporation labor cost hour field size acres speed acres hour 12 00 100 2 600 00 Break even The break even hauling distance is the number of miles one way in which the cost of hauling is equal to the net manure value manure value less loading application and incorporation costs a Break even hauling distance as applied mile Manure value as applied manure operating costs except hauling hauling per mile 2 division by two to calculate one way distance instead of round trip 20 Manure value as applied field 23 099 00 Manure operating costs except hauling field loading cost application cost incorporation cost 562 5045 1 100 2 100 3 762 50 field Manure value less loading application and incorporation costs as applied field 23 099 00 3 762 50 19 366 00 As applied net manure value per load load 19 366 00 75 loads 258 22 load Hauling cost per mile mile 42 per hour 10 miles per hou
28. lue of the N P and K in the manure and decrease in costs cost of applying fertilizer In this example Figure 13 hauling manure to the 100 acre field with crop requirements of 100 Ibs of N 25 Ibs of P20 and 20 Ibs of K2O per acre can be paid for by fertilizer cost savings if you haul less than or equal to 33 1 miles as applied or 8 1 miles currently needed 7 Break even distance On 100 acre field requiring 100 25 20 NPK breakeven distance miles one way is Hauling Distance miles 30 7 8 1 Manure Value less Loading Application as applied as needed and Incorporation Costs 19 336 5 118 Time Reguired hours to spread manure 561 243 Figure 13 The fertilizer replacement value is equal to the operating cost of manure handling when manure is hauled 33 1 miles as applied value and 8 1 miles as needed value in this example Manure Value As Applied or As Needed Commercial fertilizer N P and K can be blended to meet nutrient requirements Manure is pre packaged with a set nutrient composition Frequent manure testing is necessary to determine the manure composition The value that is placed on manure as a substitute for commercial fertilizer will depend how you credit the nutrients in the manure compared to the crop nutrient requirements of the field As Applied Value is the fertilizer replacement value of manure discounting N lost through volatilization and excess N applied however all future organic N and exces
29. n This value is the sum of ammonium N credit and current year organic N credit adjusted for losses with various application methods and timings 10 In our example Ammonium N credit current year organic N credit 36 4 63 2 lbs acre 99 6 displayed as 100 Ibs acre P20 from Current Application This value is calculated based on manure analysis and application rate All of the manure P2Os is assumed to become available for plant uptake in the year of application In our example P20 as needed value 62 250 lbs manure acre 0 19 P20 in manure 118 28 lbs P20 5 acre K O from Current Application This value is calculated based on manure analysis and application rate All of the manure K2O is assumed to become available for plant uptake in the year of application In our example K2O as needed value 62 250 lbs manure acre 0 23 K gt O in manure 143 lbs K O acre Total N Value This is the product of the N Available from Current Application and the N fertilizer value listed in section 2 Fertilizer Costs In our example the N fertilizer value is 0 50 lb and the total N as applied value 0 50 36 4 63 2 49 80 acre 66 40 load and 0 01 gallon Total P205 Value This is the product of the P205 from Current Application value and the P20 value listed in section 2 Fertilizer Costs In our example the P20 fertilizer value is 0 60 lb and the total P205 as applied value 0 6
30. ng to the frac tank with a hour round trip time including loading and 1 tractor simultaneously spreading the manure from the tank e The second row has the same number of loads same machinery and labor complement but requires a 1 hour round trip time 33 User s Manual Hauling Loading amp Hauling Application Application Hauling Spreading Hauling Application Total Total Number of Equipment round trip Equipment speed machinery machinery clock clock clock Labor Loads time ee ha e E EEN EE 1000 TOTAL zo 4100 250 100 250 1000 Figure 27 Entries to the Time sheet depict 500 loads with a one half hour round trip time requirement and 500 loads requiring a one hour round trip time requirement illustrate how the Time sheet can be used to consider the total labor machinery and time resulting from alternative manure management schemes Loads enter in the number of loads of manure hauled or applied Hauling Equipment Number and Application Equipment Number enter in the number of pieces of machinery working at once for instance if two tractors equipped with spreaders were working on one day enter in 2 for Application Equipment Number c Hauling round trip time hours enter in the hours spent for each piece of equipment However if for instance hauling and spreading were both done in one trip by the same piece of equipment enter the total time under ONE of the he
31. perators Independent operating speeds and fuel efficiencies are entered on the Fertilizer Replacement Value sheet section 6 a Fuel Costs Enter the fuel cost in dollars per gallon for the fuel used for loading hauling application and incorporation The fuel costs entered on this tab Fertilizer Replacement Value are carried over to the other two calculator sheets b Labor Cost Enter the hourly wage paid to employees to load haul spread and incorporate manure The labor costs entered on this tab Fertilizer Replacement Value are carried over to the other two calculator sheets c Time Fuel Efficiency and Speed Enter the time taken to load manure into the spreader in minutes Enter fuel efficiency for loading hauling spreading and incorporating in gallons per hour For hauling enter speed in miles per hour For spreading and incorporation enter speed in acres per hour d Calculate Application and Incorporation Speed this button estimates field capacity in acres hour for common application and incorporation methods Enter in the speed in miles per hour the width of the implement being used and use that to determine the field efficiency factor provided at the bottom of the page The field efficiency factor is the percentage of the theoretical field work accomplished after deducting for efficiency losses due to turning overlap and other minor work stoppages The field efficiency factor will depend on the shape of the field t
32. r 4 20 mile Break even hauling distance as applied mile 258 22 4 20 per mile 2 30 7 miles Break even hauling distance as needed mile Manure value as needed manure operating costs except hauling hauling per mile 2 division by two to calculate one way distance instead of round trip Manure value as needed field 8 880 00 Manure operating costs except hauling field loading cost application cost incorporation cost 562 5045 1 100 2 100 3 762 50 Manure value less loading application and incorporation costs as needed field 8 880 00 3 762 50 5 117 50 As needed net manure value load load 5 117 50 75 loads 68 23 Hauling cost per mile mile 42 per hour 10 miles per hour 21 4 20 per mile Break even hauling distance as needed mile 68 23 4 20 per mile 2 8 1 miles c How much time is required This button helps determine the amount of labor and machine time required to haul and apply manure at the given parameters rate speeds and efficiencies and at the break even distances both as applied and as needed The amount of time required is a good cross check in the real world feasibility of the manure application strategies represented by the data entered above Figure 16 Times and costs for each operation Print Sheet Figure 16 The How much time is required button Hauling Distance miles 30 7
33. re Application Time Management sheet User s Manual Hauling Loading amp Hauling Application Application Hauling Spreading Hauling Application Total Total Number of Equipment round trip Equipment speed machinery machinery clock clock clock Labor Loads em time E a E EE E m E KE EN 500 500 SS E_E ll s a 1000 TP TOTAL 750 100 250 100 250 1000 _ Figure 26 In Time sheet manure applications are broken down into blocks of fields with similar time machinery and labor requirements These blocks appear as rows on this sheet Machinery labor and clock hours are calculated for each management block In this section white cells boxes are open for data entry and yellow cells boxes are calculated values The yellow cells present results based on data entered into white cells Yellow cells are locked and cannot be manipulated In this sheet the total amount of time clock hours needed to complete manure handling as well as hours of hired labor and equipment hours required are calculated In this area you can experiment with different numbers of trucks and times to determine work flow bottlenecks The user breaks all farm manure handling tasks into blocks of time that are similar in time and machinery labor requirements In the screen shown in Figure 28 a producer using a drag hose and frac tank system considers farm applications in two rows e 500 loads are applied with 3 trucks hauli
34. re Cost sheet Capital Costs entry section 5 5 Capital Costs Repairs amp Age of Maintenance Equipment yrs Percent of Time Used for Equipment Equipment Name Mare Handling Purchase Cost Salvage Value eats tert Manure Spreader 100 Tractor 45 Cost of Capital Equipment Insurance Cost per 1000 6 00 Add more equipment Print Sheet bated Manure Equipment Amount Insured Figure 20 Information entered into section 5 including a list of equipment used for manure management cost salvage value and age information is used to calculate machinery ownership cost such as depreciation interest on equity and insurance costs a Equipment Name enter in the name of each piece of equipment b Percent of Time Used for Manure Handling enter in the percent of time as a whole number that each piece of equipment is used for handling manure For instance in the figure above the spreader is only used for manure handling so 100 is entered The tractor is likely to be used for other jobs so only 40 of the time might be involved in manure handling c Purchase Cost enter in the price paid for each piece of equipment d Salvage Value enter in the expected value of the equipment at the end of the entered Equipment Lifespan yrs e Equipment Lifespan years enter in the expected useful lifespan of each piece of equipment f Age of Equipment yrs enter the current age in years of the equipm
35. re Costs Total hours to spread manure Whole Farm Manure Costs Total per hour costs for spreading and incorporation Whole Farm Manure Costs Total equipment and machinery ownership costs Whole Farm Manure Costs 4 Time e Total loads of manure hauled or spread e Time for each hauling trip hours e Speed of spreaders loads hr 2 What is the break even hauling distance for my manure Fertilizer Replacement Value Sheet Section 1 Manure Nutrient Content In this section white cells boxes are open for data entry and yellow cells boxes are calculated values The yellow cells present results based on data entered into white cells Yellow cells are locked and cannot be manipulated Figure 1 1 Manure Nutrient Content Animal Species Cows Z Units 6 Ammonium N 0 09 Organic N 2 totai oae ha of o9 h e os h Figure 1 data entry for section 1 of the calculator with example data a Animal Species Animal species must be chosen from a pull down menu Place the cursor in the data entry box and then click the down pointing arrow that appears on the right a list will be pulled down and an animal species can be chosen This information is important for calculating expected N credits from organic N mineralization over three years following application A decay or mineralization series is commonly used to estimate the rate of N availability from stable organic N A decay series of 35 12 and 5 is used to est
36. rious costs acreage and efficiency The formula is Total manured spreading costs Total hours to spread Total manured acres Section 3 Manure Incorporation if operated separately from manure spreading Figure 20 is a screen shot of sections 3 and 4 of the Whole Farm Manure Cost sheet 3 Manure Incorporation if operated separately from manure spreading Fuel 30 00 hr Total Incorporated Acres OoOO 0 O acres Labor Ihr Total Machinery Hours ee eee hours Total Costs Ihr Fuel Efficiency gal hour Average per Acre Incorporated Cost lacre Average Rate ae acres hour 4 Manure Hauling Fuel Ihr Labor Ihr Total Hauling Machinery Hours hours Total Ihr Fuel Efficiency gal hour Average per mile costs Imile Figure 19 Annual whole farm manure management information including the total number of acres with manure incorporation total machinery hours needed for incorporation and total hours needed for manure hauling are entered into sections 3 and 4 of the Whole Farm Manure Cost sheet a Total Incorporated Acres enter the total number of acres on which manure will be incorporated Only use this section if the incorporation is done separately from the manure application b Total Machinery Hours enter in the total hours logged on spreading machinery c Fuel Efficiency gallons hour this value was entered in Section 5 of the Fertilizer Replacement Value sheet d Average Rate acres hour this value is calculated
37. rogram Department of Animal Science Cornell University 323 Morrison Hall Ithaca NY 14583 or e mail gmk2 cornell edu 1 Introduction This calculator was designed to estimate manure spreading costs in relation to the value of manure nitrogen N phosphorus P and potassium K using different manure spreading Strategies at the field and whole farm levels By changing the type or cost of equipment labor inputs manure nutrient densities and application methods fuel costs and fertilizer costs different scenarios can be created to evaluate different manure allocation options The calculator can provide answers and analysis for several questions 1 What is the fertilizer equivalent value of a manure application What is the break even hauling distance for hauling my manure What are the operating and ownership costs for my manure machinery What is the value in terms of fertilizer replacement and cost of exporting manure How much time clock hours as well as machinery and labor will it take to spread manure ae E a Upon opening the calculator buttons will be displayed with these questions Clicking on a button will bring you to the appropriate input and results page You can also navigate by clicking on the tabs at the bottom of the screen From any screen at the top right hand corner of the page there are two buttons that will take you to the User s Manual for help or to the Main Menu the Return button Entering
38. s P20 and K2O are 14 credited for current and future crops This value can be realized through the use of application management decisions that credit past manure applications and take into account soil test results As Needed is the fertilizer replacement value of manure when only current crop N P205 and KO needs are credited no value is credited for potential future needs These concepts are explained using our example Using the example data that was entered for manure analysis field crop nutrient needs commercial fertilizer costs and for this example used a rate of 7500galons per acre with a method and timing of Spring Incorporation within 1 day As Applied Value The As Applied Value in this example 1s calculated 7 500 gallons acre application rate 8 3 Ibs gallon density 62 250 lbs manure acre We need to know the N value P20 value KO value a N value as applied field Value of ammonium N from current application as applied field Value of organic N from current application as applied field Value of future organic N from current application as applied field 1 Ammonium N from current application as applied Ibs acre 62 250 lbs manure acre 65 conservation 0 09 manure ammonium N 36 4 Ibs ammonium N acre Value of ammonium N from current application as applied field 36 4 ammonium N lbs acre 0 50 value of fertilizer N 18 21 acre 100 acres 1 821 11 Organic
39. s per 1000 gallons Units must be selected from the pull down menu Place the cursor in the data entry box and then click the down pointing arrow that appears on the right a list will be pulled down and a unit selection can be made The units should match what is reported on the manure analysis from the laboratory Ammonium N Ammonium N or NH N should be entered in units listed beside the data entry box Double check the manure analysis report and the spreadsheet to make sure the units are the same If they are not the same change the units by clicking on the data entry box labeled Units Organic N Organic N content should be entered in the same units as listed beside the data entry box Double check the manure analysis report and the spreadsheet to make sure the units are the same If they are not change the units to be consistent with the manure analysis report clicking on the data entry box labeled Units Total N Total N is calculated as the sum of ammonium N and organic N Data cannot be entered into this cell P205 Phosphorus content reported as P20 equivalent should be entered in units listed beside the data entry box Double check the manure analysis report and the spreadsheet to make sure the units are the same If they are not change the units to be consistent with the manure analysis report Make sure that the value entered is in P205 equivalents NOT the P content in the manure If your manure analysis report only lis
40. termine the fertilizer N 0 50 m replacement value of manure contact the fertilizer dealer to Jt 0 50 M obtain component values Component values can differ P 0 0 60 I is gs on the rene aor used to rie anne mixes Determine what fertilizer mix you would purchase 1 0 5 0 70 Kols 070 manure were not available and obtain the component value of Application 10 00 acre that mix from your fertilizer sales representative Cost to supply Crop b Nutrient Needs with j Fertilizer Fertilizer Application Costs Estimate what the fertilizer application costs would be 1f fertilizer were applied instead of manure Include equipment labor and fuel in this cost If there is 8900 acre 2 custom fertilizer applicator in your area they may have the best estimate of what the per acre cost would be for a fertilizer Figure 2 Section 2 of the application calculator with example data In our practice example we use a cost per unit of N P20 and K2O as shown in figure 2 and a cost for the application of 10 00 per acre The total cost to supply the crop will be calculated after section 3 1s filled in Section 3 Crop Nutrient Needs 3 Crop Nutrient Needs The calculator calculates the fertilizer replacement value of the manure on 1 Total nutrients applied with manure and N 100 _ ibsiacre 2 Nutrient delivered by manure that are needed by the P O 25 ibs acre crop Section 3 requires the nutrient needs of
41. the example data in the steps that are outlined in this user manual will provide the results shown in snapshots throughout the user manual Warning Feasibility and quality of the output of the calculator are dependent on the quality and reliability of the input data used these input data are the responsibility of the person using the calculator The equations in this calculator reflect our best effort to interpret a complex body of scientific research on nutrient crediting and economic assessment and to translate this into practical management options Implementation of manure management practices based on the output of the calculator does not assure compliance with any applicable law rule regulation or standard or the achievement of particular discharge levels from agricultural land Information Requirements Farm specific data are required To limit redundant data entries we have attempted to organize the sheets so that the same information is only entered once While each different sheet of the workbook deals with a different question above many values from one sheet are transferred to another Using the sheets in the order that they appear on the opening screen will ensure that all of the required information is entered Items Needed to Fill Out Sheets 1 Fertilizer Replacement Value e Manure analysis lb gallon or lb ton of N P205 and K20 Crop requirements lb acre of N P205 and K20 Value of fertilizer lb of N P2xO5
42. they must be selected from the pull down menu Place the cursor in the data entry box and then click the down pointing arrow that appears on the right a list will be pulled down and unit selection can be made b Total Manure to Spread enter the total tons or gallons of manure to be spread over all acres owned rented and exported manure acres for one year c Average Application Rate acres hour this is a calculated value based on entered total manure to spread 1a divided by the entered Total Manure Acres 2a Section 2 Manure Spreading a Total Manured Acres enter the total number of acres owned rented and exported that will receive manure during a one year period b Total Hours to Spread enter the total hours required to spread manure based on farm records c Average Rate acre hr this value is calculated by dividing the manured acres by the hours required 2a 2b above d Fuel Efficiency gal hour this value is taken from Section 5 of the Fertilizer Replacement Value sheet e Fuel hr the total fuel cost hr is calculated by multiplying the Fuel Efficiency by the Fuel Cost input from Section 5 of the Fertilizer Replacement Value sheet 23 f Labor hr this value is taken from the Fertilizer Replacement Value sheet outlined above in Section 5 g Total Costs hr the sum of the Fuel and Labor costs above 2e 2f h Average per acre spread cost acre this value is calculated from the va
43. to crop needs Loads to meet requirements The number of loads required to meet the application rate for the specified field is calculated and displayed Figure 9 Quantity to Meet Requirments Figure 9 The calculator will display the loads required to 750 000 gallons meet the nutrient application scenario entered in Section 4 Section 5 Manure Nutrient Values The manure value section shows the nutrient value and fertilizer equivalent dollar value of various forms of nutrients in manure The different values correspond to different multi year nutrient management techniques a Total Ammonium N This is the total amount of ammonium N potentially available as recorded on the manure analysis In our example Total ammonium N lbs acre 62 250 lbs manure acre 100 conservation 0 09 NH4 56 Ibs N acre Ammonium N Lost The estimated amount of ammonium N lost with different types of manure application methods and timing combinations is shown for educational purposes This value is not used in any other calculation in the calculator In our example there is a calculated difference between the 100 potential NH3 credit of 100 and the credit associated with the manure application practice entered Spring Incorporated 1 day 65 credit Ammonium N lost lbs acre Total ammonium N ammonium N credit 20 Ibs N acre Ammonium N Credit This value is calculated based on the manure analysis rate method and timing
44. ts P convert this value to P2Os by multiplying by 2 29 K O Potassium content reported as K2O equivalent should be entered in units listed beside the data entry box Double check between the manure analysis report and the spreadsheet to make sure the units are the same If they are not change the units to be consistent with the manure analysis report Make sure that the value entered is in K O equivalents NOT the K content of the manure If your manure analysis report only lists K convert to K20 by multiplying by 1 20 h Total Solids Total solids are reported as a percentage If total solids is not reported but percent moisture is given the total solid content can be determined by subtracting the percent moisture from 100 i Density Manure density is the mass per gallon usually reported in kg per liter for comparison the density of water is kg liter Different manure sources on a farm can have different densities which can impact the cost effectiveness of transporting nutrients to farm fields If your report only lists kg liter kg L convert to Ib gallon by multiplying by 8 35 In our practice example found in the companion spreadsheet Manure Value Calculator User s Manual we use manure from cattle with less than 18 solids and the manure nutrient content 1s listed in percents instead of pounds per ton or pounds per 1000 gallons Section 2 Fertilizer Costs 2 Fertilizer Costs a Fertilizer Costs To de
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