Fertilizer schedule
Use the stage cards as a planning checklist, then read country notes for local fertilizer language (rates are not prescriptions).
Inoculate seed with rhizobia when needed; supply phosphorus and potassium — legumes often need less N.
Use a low-N starter if soils are very poor; excess N reduces nodulation.
Maintain K and micronutrients (e.g. Mo, B where deficient); irrigate to reduce flower drop.
Excerpts from CropWhen calendar notes that mention fertilizer, manure, NPK, or related terms.
Irrigated. Absorbing irrigation for getting up normal moisture in the soil, land preparation, and NPK application at the time of sowing.
Irrigated. NPK application at the time of sowing.
Soy is a new crop in the food habits of households. It is grown in pure by some food technology centers for semi-scale processing slurry of flour. Applying fertilizer at planting DAP. Spacing: 40x20cm
Ridge tillage. Practiced in rotation with maize. Monoculture with chemical treatment. No mineral fertilizer application.
Ridge tillage. Practiced in rotation or in association with corn. Monoculture with chemical treatment. No mineral fertilizer application.
Ridge tillage. Practiced in rotation with sorghum or corn. Monoculture with chemical treatment. No mineral fertilizer application.
Mechanized seeding. Soils with low fertility: N-P-K-S (46-34-50-24) Kg/ha. Soils with medium fertility: N-P-K-S (23-23-30-12) Kg/ha. Soils with high fertility: N-P-K-S (0-0-0-0) Kg/ha.
soil pH basic. row planting. 1-2 weeding. Inputs of nitrogen during weeding.
deep soils. pH 6-6.5. row planting. organic fertilizer supply during preparation floor. mineral fertilizer supply during seeding. 2-3 weeding.
deep soils. pH 6-6.5. row planting. mineral fertilizer supply during seeding. 2-3 weeding.
row planting. 1-2 weeding. nitrogen inputs during the growth phase.
rich soils. pH 6-6.5. row planting. 2-3 weeding. Inputs of nitrogen during weeding.
rich soils. Unsalted soils. row planting. 1-2 weeding or more. of nitrogen during growth phase
Follow the stage cards above (soil prep → planting → mid-season). Exact rates depend on soil tests and local packages — FAO notes below show how growers describe fertilization in different countries.
Treat them as historical/field guidance, not a prescription for your plot. Units and products differ by country. Confirm with agricultural extension before applying.
Not a fertilizer prescription. Over-application wastes money and can harm plants and waterways. Follow local extension packages.