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Poultry Litter FERTILIZER CALCULATOR

Poultry Litter FERTILIZER CALCULATOR. Leticia Sonon MASTPAWG 2010 Richmond, VA. Source: Calculating the Fertilizer Value of Broiler Litter (UGA Circular No. C 933) David E. Kissel, Mark Risse, Leticia Sonon and Glen Harris. Bases of calculations.

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Poultry Litter FERTILIZER CALCULATOR

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  1. Poultry LitterFERTILIZER CALCULATOR Leticia Sonon MASTPAWG 2010 Richmond, VA Source: Calculating the Fertilizer Value of Broiler Litter(UGA Circular No. C 933) David E. Kissel, Mark Risse, Leticia Sonon and Glen Harris

  2. Bases of calculations • Prevailing retail prices of commercial fertilizers containing N, P, and K. • Based on an average broiler litter composition: 3.1% N, 3.1% P2O5, and 2.8% K2O.

  3. STEP 1. Determine the cost per pound of available nutrients. Cost per pound = retail price per ton divided by the pounds of nutrient per ton. UREA Analysis : 920 lbs N/ ton Cost : $600/ton : $0.65/lb N Muriate of Analysis : 1,200 lbs K2O/ton Potash Cost : $960/ton : $0.80/lb K2O

  4. STEP 2. Determine the equivalent N, P2O5 and K2O values per ton of litter. • Using the calculated price for N, P2O5 and K2O in step one, proceed to step two table. Find the equivalent fertilizer value per ton of litter that contains 3.1 percent N, 3.1 percent P2O5 and 2.8 percent K2O.

  5. STEP 3. Add the total fertilizer value for N, P and K in dollars per ton of litter. As an example, for N, P2O5 and K2O (valued at $0.60, $0.50 and $0.30 per pound, respectively), the litter value based only on the N, P and K values would be $18.60 + $27.90 + $16.80 = $63.30 per ton.

  6. Situation •  pastures under continuous litter application may have high soil test P and K levels •  applying the litter to this pasture may be wasteful if only N is needed •  P and K value = $44.70 per ton, more than enough value to purchase an amount of N fertilizer equal to the N contained in one ton of the litter (valued at $18.60) •  the poultry farmer could then sell the litter to other farmers who need all three nutrients for crop production, and use the money from the sale to purchase N fertilizer for the pasture.

  7. Online Calculator http://aesl.ces.uga.edu/fertcalc.htm

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