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Production · Protection · Nutrients · Water
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1,513 crop protection pages, pest and disease by crop•98 crops tagged — rice, cotton, sugarcane, mango and more•261 nutrient management pages, deficiency symptoms and correction measures•3,462 data tables preserved from the source pages

Phosphorus

Phosphorus Deficiency Symptoms Branching suppressed and stalks slender. Lower leaves become dull dark and greyish green. Necrosis of majority of leaves is followed by defoliation. Correction Measure 2% DAP (20g/lit) foliar spray at fortnightly intervals, after the appearance of deficiency symptoms. [Soak 2 kg of DAP in 20 lit of water over night and in the next day morning filter the solution. Add one lit per tank (10 lit tank) and 20 tanks (200 lit) should be sprayed for an acre]. .

Deficiency Symptoms

  • Branching suppressed and stalks slender.
  • Lower leaves become dull dark and greyish green.
  • Necrosis of majority of leaves is followed by defoliation.

Correction Measure

2% DAP (20g/lit) foliar spray at fortnightly intervals, after the appearance of deficiency symptoms.

[Soak 2 kg of DAP in 20 lit of water over night and in the next day morning filter the solution. Add one lit per tank (10 lit tank) and 20 tanks (200 lit) should be sprayed for an acre]. .