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Potato

Проверени данни

Solanum tuberosum

Раби · Punjab PK / UP India

Препоръка за торене

N 170P₂O₅ 100K₂O 220kg/ha

Source: LfL Bayern / University of Idaho Extension (Ahmed research 2026-10-14)

Изчисли за моята площ

How to Apply Fertilizer Correctly

Practical field advice for Potato — knowing how to apply fertilizer matters as much as knowing how much.

What is the correct way to flood DAP for Potato?
Dissolve the DAP with a DAP solvent in a drum so it fully dissolves. Do NOT open the drum valve at the start of irrigation — wait until the water has covered about 25% of the plot (roughly 1–1.5 kanal in). Then open the valve. Close the drum valve about 10 minutes before you stop the water, so the last flow of water carries the dissolved fertilizer evenly to the far end of the field.
Should urea be flooded with irrigation water, or broadcast afterwards?
Do NOT flood urea. Flooding loses 40–50% of nitrogen through leaching (deep percolation) and denitrification (lost as gas). Instead, broadcast (chhatta) the urea 1–3 days after irrigation, when the soil is moist (tar-wattar condition). This gives 30%+ better absorption than flooding.
How can I distribute fertilizer evenly across the field?
Open the fertilizer drum valve only after irrigation water has already entered 1–1.5 kanal — opening it too early empties the drum before the far end is reached. If the field is not laser-leveled, divide one acre into 2–4 plots (kyare): 2 plots for heavy clay soils, 3–4 for loam, and fertigate each plot separately. Keep checking both the field and the drum during irrigation until you get a feel for the timing.
When should phosphorus and potash be applied?
Phosphorus (P₂O₅) and potash (K₂O) are best applied at sowing as a basal dose, placed in the seedbed. If you missed it at sowing, dissolve the fertilizer (use a DAP solvent for DAP) and flood it at the first or second irrigation — flooding is far more effective than broadcasting for phosphorus and potash at that stage.

Условия за отглеждане

Почва
Loose, well-drained sandy loam; avoid waterlogging.
Вода
Light, frequent irrigations; stop 10 days before harvest.
Сезон на отглеждане
Plant October; harvest January – February.
Подходящи региони
Punjab PK / UP India

Фази на растеж и торене

1

Basal · At planting

Full phosphorus + potassium + half nitrogen in ridges.

2

Earthing-up · ~30 days

Remaining nitrogen.

Внимавайте за

Late blightAphidsCutwormsHollow heart from uneven water

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Свързани торове

UreaDAPMOP

Органични торове — варианти

Добре узрелият оборски тор, компостът или вермикомпостът могат да се използват като основно подобрение на почвата за Potato — изграждат структурата на почвата и освобождават хранителни вещества бавно през сезона. Тъй като съдържанието на хранителни вещества в органичните торове варира според източника, допълни точната нужда с минерален тор, изчислен за твоята култура и регион.

За тази култура няма проверена конкретна органична норма — съветите по-горе са обща практика, а не измерена препоръка. За прецизно планиране изпрати материала си за лабораторен анализ.

Разгледай органичните торове →

Източници

  • Provincial agriculture departments / research institutes. LfL Bayern / University of Idaho Extension (Ahmed research 2026-10-14) — Punjab PK / UP India

Последно проверено: 2026-10-01