Yellowing of leaves of wheat after the first irrigation in heavy soils is a common problem that farmers encounter. This issue can have adverse effects on the growth and yield of wheat plants, ultimately leading to losses incurred by farmers. However, by understanding the cause of this problem, farmers can take appropriate measures to prevent it from happening.
One of the main reasons for the yellowing of leaves of wheat after the first irrigation in heavy soils is iron deficiency. Heavy soils are typically alkaline in nature, which can affect the availability of nutrients to wheat plants. Most plants, including wheat, require iron for healthy growth and development. However, in alkaline soils, iron is often present in a form that is not readily available to plants, leading to iron deficiency.
To address this problem, farmers should add iron chelates to the irrigation water or directly to the soil. Iron chelates are organic compounds that are designed to bind with iron and make it more available to plants. By using iron chelates, farmers can ensure that wheat plants have access to the iron they need to grow and develop properly.
Another factor that can contribute to the yellowing of leaves after the first irrigation is excess moisture in heavy soils. When soils become waterlogged, oxygen is displaced, preventing roots from absorbing nutrients. This can lead to nutrient deficiencies, including iron deficiency. Furthermore, excess moisture can encourage the growth of harmful microorganisms, which can damage or kill wheat plants.
To prevent excess moisture in heavy soils, farmers should endeavor to improve the drainage in their fields. This can be achieved by incorporating organic matter into the soil, which can improve the soil structure and promote better drainage. Additionally, farmers can add gypsum to their fields, which can improve soil structure and drainage.
In conclusion, yellowing of leaves of wheat after the first irrigation in heavy soils is a serious problem that can affect the growth and yield of wheat plants. However, by understanding the causes of this problem and taking appropriate measures, including adding iron chelates and improving drainage, farmers can minimize the impact of this problem and help ensure a bountiful harvest.