The phenomenon of corn bald tip is very common, referring to the phenomenon of lacking, lacking, withered, or even no grains at the top of the ear in the middle and late stages of corn. Once a bald tip occurs, it can lead to a significant reduction in corn production in the later stages, so corn growers must take this issue seriously.
Reasons for corn bald tip
1. Adverse factors such as drought or lack of sunlight during the late stage of female spike differentiation result in poor differentiation or degraded sterility of the top small flower.
2. The occurrence of high temperature and drought before tasseling results in the absence of male and female flowering periods, resulting in the inability to pollinate the top filaments.
3. During the later stage of pollination, rainy weather caused the top filaments to be unable to pollinate and become bald and lacking in seeds.
Prevention and control of corn bald spots
1. Reasonable planting methods should be used to select varieties with strong resistance to drought, high temperature, and disease. Based on the actual conditions of field fertility, water and fertilizer, and variety characteristics, dense planting and timely early sowing should be carried out.
2. Scientific water and fertilizer management for corn fertilization requires controlling the amount of nitrogen fertilizer applied, increasing the application of organic fertilizer, phosphorus and potassium fertilizer, as well as boron, zinc and other trace fertilizers, and timely applying seedling fertilizer, jointing fertilizer, stem fertilizer, ear fertilizer, and grain fertilizer according to the base fertilizer situation.
3. During the flowering period of assisted pollination corn, if encountering extreme weather conditions that are not conducive to sperm transmission and pollination (such as long-term high temperature, drought, or continuous rainy weather), artificial pollination can be carried out when more than 80% of the plants are loose pollinated (during artificial pollination, picking while pollinating), which can better improve the quality of corn pollination and significantly reduce the occurrence of problems such as bald corn kernels.
