10 July 2023, New Delhi: Central Institute for Cotton Research – Sirsa, Haryana has issued an advisory for the farmers to get higher yields of cotton crops. In this advisory, the cotton farmers have been advised by the institute about the correct use of fertilizers.
According to this advisory, balanced use of fertilizers in the cotton crop is essential based on soil test and do not allow deficiency of nutrients and excess nitrogen.
The amount of nutrients and fertilizers recommended is mentioned below:-
|Hybrid of American cotton and native cotton||Urea||225||380||325|
|Varieties of American Cotton and Native Cotton||Urea||162||112 (Native), 187 (American)||195 (Native), 217 (American)|
|D.A.P.||67||67 (Native)||45 (Native), 87 (Americal)|
|SSP||187||187 (Native)||125 (Deshi), 250 (Soft)|
|BT For Varieties (Punjab)||Urea||162||–||–|
American – Mix Zinc Sulphate Heptahydrate (21%) 25 kg or 16.25 kg Zinc Sulphate Monohydrate (33%) in the soil at the time of sowing. In light soils of Punjab, add 50 kg of Potash per hectare or Murate of Potash at the time of sowing. In Boron deficient soil, add 1 kg of Boron (10 kg of Borax) per hectare at the time of sowing.
Points to be noted in fertilizer management of Cotton –
Apply a full dose of Phosphorus at the time of sowing and half a dose of Nitrogen at the time of thinning and half at the time of flowering. If the availability of nitrogen in the soil is low, then half the dose of nitrogen can be applied at the time of sowing instead of rarefaction.
In the months of July-August, a large number of flowers, and buds come together on the American cotton crop, so take care of the availability of nutrients at this time, so that the problem of para-wilting does not come.
Do 3-5 sprays of 2% Potassium Nitrate (13:00:45) at weekly intervals after the crop starts flowering.
For higher yield and management of red leaves in Bt cotton, apply 2 sprays of 1% Magnesium Sulphate (2.5 kg per hectare in 250 liters of water) at 15 days intervals at the time of flowering and tillering and tillering.
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