Winter wheat is frequently affected by dry hot winds during the heading to grain-filling stages. This environmental stress can cause the plants to dry out, hinder normal maturation, result in empty grains, reduce grain weight, and lead to yield losses of up to 10% to 20%. To mitigate these effects, applying potassium dihydrogen phosphate (KHâ‚‚POâ‚„) during the heading to milk-mature stage can be highly beneficial. When absorbed through the leaves, this nutrient enhances the synthesis, transport, and accumulation of dry matter, ensuring more complete grain filling and significantly increasing grain weight. It also helps speed up the grain-filling process and promotes overall maturity, which in turn reduces the risk of damage from dry hot winds.
For wheat plants that have high levels of nitrogen at later growth stages, the application of potassium dihydrogen phosphate can help balance nutrient uptake and accelerate the accumulation of dry matter, further improving grain quality and yield. Even if dry hot winds do not occur, using this solution can still boost production. The recommended concentration for spraying is 0.2%, and it's best to apply it during the heading and flowering stages. A second application at the grain-filling stage is advisable, with an interval of 10 to 15 days between sprays. This timing ensures optimal absorption and effectiveness of the nutrients. By following this practice, farmers can better protect their crops and maximize yields under challenging weather conditions.
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