Water demand during maize jointing

In the large trumpet stage, it's also important to apply topdressing. For example, applying about 15 kg of urea per mu (approximately 667 square meters) can significantly boost plant health. On dry land, this should be done through natural rainfall, while on irrigated land, watering should follow immediately after fertilization. The topdressing can be applied either between the rows or directly at the base of the plants. After watering, it’s crucial to perform weeding and soil cultivation promptly. Combining these practices with timely hilling and soil loosening helps control weeds, retain moisture, and promote strong root development, ultimately increasing yield and profitability.

During the jointing stage, several pests may threaten the crop, including corn borers, aphids, red spiders, and armyworms. To manage corn borers, a mixture of disulfoton granules and fine sand in a ratio of 1:50 can be applied to the soil, providing effective control with up to 90% success. Aphids and red spiders can be controlled using insecticides such as Daqinling or other approved pesticides. Armyworms can be effectively managed by spraying 40% dimethoate diluted at a ratio of 1500–2000 times, which has shown excellent results in reducing infestations.

Proper attention during the jointing stage ensures that the corn plant develops strong stalks, healthy leaves, and well-formed ears. It's a time when both water and nutrients must be carefully managed to maximize the potential of the crop. Farmers are advised to monitor the field regularly and adjust irrigation and fertilization based on weather conditions and plant needs. By following these best practices, farmers can significantly improve their harvest quality and overall productivity.