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Fertilizer schedule

Yam Fertilizer Schedule

Use the stage cards as a planning checklist, then read country notes for local fertilizer language (rates are not prescriptions).

4FAO fert notes
1countries

Stage checklist

Soil preparation
1–3 weeks before sowing/transplant

Work in compost or well-rotted manure; add a balanced basal dressing if soil tests low in P/K.

At planting
Sowing or transplant day

Band a light starter fertilizer near the row; avoid burning young roots with high-salt products.

Vegetative growth
2–4 weeks after establishment

Side-dress with nitrogen for leafy growth if leaves pale; water in thoroughly.

Flowering / fruiting
At flowering / early fruit set

Shift toward potassium and steady moisture for fruiting vegetables (tomato, pepper, cucurbits).

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FAO fertilization notes

Excerpts from CropWhen calendar notes that mention fertilizer, manure, NPK, or related terms.

Cameroon Adamawa Plateau

Labor ridges manual or animal traction. Half live seedlings. Manual weeding are done at the beginning of vegetation. Staking right out vines. No mineral fertilizers

Cameroon Coastal lowlands

Trouaisons manual. Half live seedlings. Weeding and hoeing are textbooks at the beginning of vegetation. Staking right out vines. No fertilizer minerals.

Cameroon High West plateaux

Labor manual logs. Half live seedlings. Manual weeding are done at the beginning of vegetation. Staking right out vines. No mineral fertilizers

Cameroon Plateau South Cameroon

Manual Labor mounds. Half live seedlings. Manual weeding are done at the beginning of vegetation. Staking right out vines. No mineral fertilizers

FAQ: fertilizing Yam

When should I fertilize Yam?

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.

Can I copy NPK numbers from the notes?

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.