Yellowing of Wheat in Heavy Soils after Irrigation – Information
Yellowing of wheat in heavy soils after irrigation is a common problem faced by farmers and agriculture professionals in certain parts of the world. The issue arises due to various factors such as soil quality, nutrient deficiency, water stress, and many others. In this article, we will explore the reasons behind the yellowing of wheat in heavy soils after irrigation and how to prevent it.
Heavy soils refer to soils that are made up of clay or silt particles. These soils retain water for longer periods and drain very slowly. Due to poor drainage, they become waterlogged after irrigation or heavy rainfall. This waterlogging condition creates a lack of oxygen in the soil, which causes the yellowing of the wheat plants. The plants start to develop yellow leaves and stunted growth due to the absence of oxygen, which is essential for the roots to absorb nutrients.
Another reason for the yellowing of wheat could be the presence of excess water-soluble salts in the soil due to hot and arid climates. These salts accumulate in the soil over time, and with irrigation, they dissolve and mix with the soil water. The excessive salts, when absorbed by the plants, cause the yellowing of the leaves and damage to the roots. The excess salt content in the soil could be due to the use of salt-laden irrigation water or the use of soil amendments that are high in salts.
Nutrient deficiency is also one of the reasons for the yellowing of wheat plants. Heavy soils are less productive and often have low nutrient content, particularly nitrogen, iron, and magnesium. These nutrients are essential for the healthy growth of wheat plants. When there is a deficiency of these nutrients, the plant’s leaves turn yellow, and they start to wither.
To prevent the yellowing of wheat plants in heavy soils after irrigation, it is essential to improve soil structure and fertility. The farmers can do this by:
– Improving soil drainage by creating ridges or planting on raised beds to allow excess water to drain away from the roots.
– Limiting irrigation frequency and amount to avoid waterlogging and salt accumulation in the soil.
– Applying organic matter such as compost, manure, or green manure cover crops that can improve soil fertility and structure.
– Conducting soil tests regularly to monitor nutrient levels and apply fertilizers or other soil amendments accordingly.
In conclusion, yellowing of wheat in heavy soils after irrigation can be a widespread problem that can impact crop yields if left unaddressed. It is crucial to identify the underlying reasons for the yellowing issues and take appropriate steps to improve soil quality and fertility. By improving soil drainage, avoiding excessive irrigation, and providing adequate nutrients to the plants, farmers can ensure a healthy and productive wheat crop.