The jointing stage of corn is a crucial period for its development. During this time, proper irrigation and fertilization play a vital role in ensuring healthy plant growth and the normal formation of tassels. In the large trumpet stage, sufficient water is essential to maintain soil moisture, with the field's water-holding capacity ideally maintained at around 70%. This ensures that the plants receive enough moisture to support their rapid growth.
During this critical phase, it's important to apply urea at a rate of 10–15 kg per acre. For dryland, it's best to apply fertilizer before rainfall, while irrigated fields should be watered after applying the fertilizer. The top dressing can be applied either between the plants or directly at the base. After watering, it's necessary to perform timely weeding and soil cultivation. Combining these practices with regular hoeing helps control weeds, retain moisture, and promote strong root development, all of which contribute to higher corn yields and better income.
In addition to proper nutrition and irrigation, pest management is also essential during the jointing stage. Common pests include corn borers, aphids, red spiders, and armyworms. To manage corn borers, you can mix zinc granules with fine sand and apply them as a toxic soil treatment using a 1:50 ratio. This method can achieve up to 90% control effectiveness. Aphids and red spiders can be controlled with insecticides like Diquat or other suitable sprays. For armyworms, spraying 40% dimethoate diluted 1500–2000 times has proven to be highly effective.
Proper care during the jointing stage not only supports the health of the corn plants but also lays the foundation for a successful harvest. By combining good irrigation, timely fertilization, and effective pest control, farmers can significantly improve the quality and quantity of their corn yield. It’s a delicate balance of attention and action that makes all the difference in the final outcome.
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