As the growing period of wheat crops comes to an end, it is essential to apply the last irrigation to ensure optimal yield and quality. The timing and amount of water application can significantly impact the final crop output, which is why it is crucial to follow some guidelines when applying the final irrigation.
In wheat crops, the flowering stage is a critical period that determines the potential yield. During this stage, the crop’s water requirement is at its peak, and any water stress can result in reduced grain size and quality. Therefore, the last irrigation should be applied just before the beginning of this stage.
It is important to note that applying too much water during the grain filling stage can also have adverse effects on the crop’s yield and quality. Over-watering can cause the grain to sprout, which reduces its quality and market value. Therefore, the amount of water applied during the last irrigation should be adjusted based on the soil moisture content, weather conditions and crop growth stage.
Soil type is another factor that can influence the timing and amount of the final irrigation. In sandy soils, where water infiltration is rapid, more frequent and smaller irrigations may be necessary to maintain optimal moisture levels. In contrast, clay soils tend to hold more water, and less frequent but larger irrigations may suffice.
In drip irrigation systems, it is recommended to adjust the system’s output during the last irrigation to avoid over-watering. This can be achieved by reducing the irrigation volume or frequency, or even by applying water to a smaller area.
In conclusion, applying the final irrigation to wheat crops is a critical stage that can significantly influence the final yield and quality. The optimal amount and timing of water application should be determined based on the crop growth stage, soil type and moisture content, and weather conditions. Following these guidelines can help growers achieve maximum yield and quality while conserving water resources.