Agronomy
Ammonium or nitrate: nitrogen forms in potato nutrition
The question “which nitrogen is better?” has no answer without soil conditions — and too much available N can delay tuber set and cut dry matter.
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International edition
Potato Nutrition
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Agronomy
Phosphorus and potassium before planting: forms, balance and placement
Potato tubers remove about 5.8 kg K₂O per tonne, according to the PDA — but multiplying yield by that figure gives offtake, not a fertilizer rate.
Agronomy
Soil pH and potatoes: why the 5.0–6.0 range is not universal
Moderately acidic soil helps suppress common scab, but there is no single pH target for every farm — it is a trade-off between disease and nutrient availability.
Potato Nutrition
Potato Nutrition: The Complete Season Roadmap
Potato yields are decided long before harvest — they are built phase by phase, from the moment a sprout pushes through the soil to the last weeks of tuber bulking. A fertiliser programme that ignores the crop's…