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.
Ridge tillage. Practiced in rotation with maize. 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.
Dryland rainfed. The major part of the seed needs are covered by domestic production. Sowing associated with dry corn or after dark and the storm pluies.En no fertilizer application
Direct seeding Organic fertilizers and minerals applied when soil preparation Harvest: Once a week Harvest time: 20 days
Cowpea is little grown in Gabon.Le seeding is done at a density 0.4 x 0.4 m planting hole 2 seeds. A low mineral fertilization of the order of 30 to 50 kg / ha of complete fertilizer is applied. In humid tropics cowpea is very susceptible to fungal diseases (Fusarium, Sigatoka ...)
Not irrigated Sémi live without fertilization
Rainfed. Fertilizer rarely applied, if any, organic fertilizer by broadcasting
Irrigated. Oganic manure application at the time of lnd preparation and PK application at the time of sowing.
till. The organic fertilizer is applied to plowing, cowpea responds well to mineral fertilizers. Cowpea is very noisy in culture as well as in conservation, carelessly it is completely destroyed in storage by pests.
Direct seeding without added fertilizer to decline because the soil has significant amount of silt deposited by the river water. Cowpea is very noisy in culture as well as in conservation, carelessly it is completely destroyed in storage by pests.
till. The organic fertilizer is applied to plowing, cowpea responds well to mineral fertilizers. Cowpea is growing very noisy in culture as well as in conservation, carelessly it is completely destroyed in storage by pests.
till. The organic fertilizer is applied to plowing, cowpea responds well to mineral fertilizers. Cowpea cultivation very noisy as well as in conservation, carelessly it is completely destroyed in storage by pests.
Of manure according to avalability 5T / ha and the contribution of 100g / ha of single superphosphate. Direct seeding after installation of the main cereal crops. This culture is practiced in pure and assoociée.
Distance between the rows should be 20 inches and the distance between the plants should be 16-20 inches. Farm yard manure should be applied in amount of 20 tonnes per acre, nitrogen 46 Kg/acre, Phosphorus 23 Kg/acre and Pottash 25 Kg/acre. Gap between irrigations should be 7 days.
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.