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Input: Year 1 – NO 2 , NH 4 , Organic N, P, K Year 2 – NO 2 , NH 4 , Organic N, P, K . .

Output: Year 1 – NO 3 , P, K Year 2 – NO 3 , P, K . . . Year x – NO 3 , P, K. Input: Year 1 – NO 2 , NH 4 , Organic N, P, K Year 2 – NO 2 , NH 4 , Organic N, P, K . . . Year x – NO 2 , NH 4 , Organic N, P, K. Organic N, NO 2 and NH4 mineralized to NO 3.

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Input: Year 1 – NO 2 , NH 4 , Organic N, P, K Year 2 – NO 2 , NH 4 , Organic N, P, K . .

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  1. Output: Year 1 – NO3, P, K Year 2 – NO3, P, K . . . Year x – NO3, P, K Input: Year 1 – NO2, NH4, Organic N, P, K Year 2 – NO2, NH4, Organic N, P, K . . . Year x – NO2, NH4, Organic N, P, K Organic N, NO2 and NH4 mineralized to NO3 Concern: NO2, P, or K might pass beyond the root zone and reach groundwater

  2. Determine the chemical characteristics of the food processing byproduct: • NO3, NH4, organic N, P, K 2. Determine rate of nutrient uptake Np = 2000*[NO3 + Kv(NH4) + f (organic N)]

  3. 3. Determine suitable agronomic application rates UN lbs/acre for yearx SNx = ---------------------------------------- Σ (Np1 + Np2 + . . . + Npx) UP tons/acre per year SP = ---------------------------------------- CP (2000) UK tons/acre per year SK = ---------------------------------------- CK (2000) UN = nitrogen uptake, UP = phosphorous uptake, UK = potassium uptake, CP = phosphorous content in the food processing byproduct, CK = potassium content in the food processing byproduct

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