5 calculators in this category
- Fertilizer NPK Requirement CalculatorGuaranteed analysis labelling (AAPFCO Official Publication)A soil test tells you to apply 150 pounds of nitrogen, 60 of P 2 O 5 and 60 of K 2 O per acre. It does not tell you how much…
- Custom Fertilizer Blend CalculatorAAPFCO guaranteed analysis (N-P₂O₅-K₂O)A soil test gives you pounds of N, P 2 O 5 and K 2 O per acre; a fertiliser dealer sells you urea, DAP and potash by the ton…
- Agricultural Lime Requirement CalculatorECCE basis under state agricultural liming materials lawA soil test reports a lime requirement in pounds of pure calcium carbonate per acre, and the quarry sells you a damp, variably…
- Manure Application Rate CalculatorUSDA-NRCS Conservation Practice Standard 590, Nutrient ManagementManure is a fertiliser with an awkward analysis: most of its nitrogen is organic and releases over years, and its phosphorus to…
- Compost Carbon to Nitrogen (C:N) Ratio CalculatorDry-weight mass balance of carbon and nitrogenA compost pile heats when its carbon to nitrogen ratio lands somewhere near 30:1 on a dry-weight basis, and this calculator…