Yellowing of leaves of wheat after the first irrigation in heavy soils can be caused by several factors. Understanding these factors is crucial in managing the wheat crop to maximize yield and quality. This article will provide insights to help farmers handle the yellowing of leaves in their wheat crop after the first irrigation in heavy soils.
One of the factors that cause yellowing of leaves of wheat crop after the first irrigation in heavy soils is nutrient deficiency. Heavy soils have a high clay content that makes it difficult for water and nutrients to penetrate. As a result, wheat plants may not get adequate nutrients required for optimum growth and development. The most common nutrient deficiencies include nitrogen, iron, and zinc. Nitrogen deficiency is the most common and can be corrected by adding nitrogen fertilizers such as ammonium nitrate, urea, or ammonium sulfate.
Another factor that causes yellowing of wheat leaves after the first irrigation in heavy soils is waterlogging. Heavy soils tend to retain water for a longer period. When wheat plants are exposed to waterlogged conditions, the roots are starved of oxygen, and this affects their ability to absorb water and essential nutrients. The yellowing of leaves in waterlogged condition is widespread, and the leaves may drop off from the plant. The best way to prevent waterlogging is by ensuring good drainage of the field and avoiding over-irrigation.
Herbicide injury is also a common cause of yellowing of wheat leaves after the first irrigation in heavy soils. The yellowing is caused by plant residues from herbicides that remain in the soil after application. The residues may damage the wheat plants by interfering with nutrient absorption and causing chlorosis. To prevent herbicide injury, farmers should follow the recommended application rate, avoid application during unfavorable weather conditions, and observe safety precautions when handling the herbicides.
In conclusion, the yellowing of leaves of wheat crop after the first irrigation in heavy soils can be caused by nutrient deficiency, waterlogging, and herbicide injury. Farmers can minimize the damage by ensuring good drainage of the field, providing adequate nutrients, and observing safety precautions when handling herbicides. Crop management practices such as timely application of fertilizers, proper irrigation, and integrated pest management can help to increase the productivity of wheat crop and ensure good quality yield.