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Information regarding the yellowing of leaves of wheat after first irrigation in heavy soils

After the first irrigation in heavy soils, yellowing of wheat leaves is a common problem faced by farmers. It is important to understand the causes and solutions for this issue in order to ensure a healthy and productive crop.

Causes:
1. Nutrient deficiencies: Heavy soils often have high levels of nutrients but poor availability to plants. This can lead to a lack of nitrogen, magnesium, and iron, causing yellowing of leaves.
2. Waterlogging: Overwatering heavy soils can cause water to accumulate around the roots, reducing oxygen flow and leading to root rot. This results in poor nutrient uptake, causing yellowing of leaves.
3. Soil pH: In heavy soils, a high soil pH (alkaline) can reduce the availability of certain nutrients, leading to yellowing of leaves.
4. Poor soil structure: Heavy soils can have poor soil structure, making it difficult for roots to develop properly, leading to poor nutrient uptake and yellowing of leaves.

Solutions:
1. Soil testing: Soil testing can help identify nutrient deficiencies and pH imbalances. Adding appropriate fertilizers or soil amendments can help correct these issues.
2. Proper irrigation: Adequate drainage should be provided to avoid waterlogging. Irrigation should be done only when necessary, avoiding overwatering especially in heavy soils.
3. Soil structure improvement: Improving the soil structure helps provide better aeration to the roots and enhances nutrient uptake. This can be achieved by adding organic matter such as compost, green manure, or crop residues.
4. Crop rotation: Alternate crop rotation with wheat with a legume crop can help improve the soil health and reduce soil-borne diseases.

In conclusion, yellowing of leaves of wheat after the first irrigation in heavy soils can be caused by nutrient deficiencies, waterlogging, poor soil pH, and poor soil structure. Proper soil testing and adequate irrigation, along with soil structure improvement and crop rotation, can help address these issues and ensure a healthy and productive crop harvest.

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