Baldness in corn, also known as "bare tip," is a common issue where the top of the ear lacks full kernels and appears empty. This condition significantly reduces yield and can be caused by various factors. Understanding these causes and implementing proper control measures are essential for improving crop performance.
 Several factors contribute to corn baldness. First, nutrient deficiency, especially low levels of phosphorus and potassium, can hinder cell division and slow down silk development, affecting pollination. Second, degeneration of florets at the top of the ear may lead to malformed or unproductive flowers, disrupting the pollination process. Third, delayed silking at the top of the ear often results in mismatched timing with male pollen release, leading to poor fertilization. Fourth, drought during the flowering stage can extend the time between male and female flower emergence, reducing pollination success. Fifth, over-crowded planting can limit light and air circulation, negatively impacting plant growth. Lastly, deficiencies in micronutrients like boron and zinc can interfere with pollen formation and overall ear development, causing bald tips.
 To address these issues, several strategies can be employed. First, selecting high-quality seeds that are suitable for local conditions and properly treated before planting can improve germination and growth. Adjusting planting density based on soil fertility is also important—increasing density in poorer soils and decreasing it in richer ones. Using wide and narrow row spacing helps ensure even distribution of nutrients, water, and sunlight, preventing weak seedlings. Second, balanced fertilization is crucial. A combination of nitrogen, phosphorus, and potassium, along with micronutrients like zinc and boron, should be applied according to soil test results. For example, applying 750–1000 kg of farmyard manure, 6 kg of urea, 50–60 kg of superphosphate, and 1.5–2 kg of zinc sulfate per acre can enhance productivity. Applying additional fertilizer during the critical "big bell mouth" stage, about 10 days before tasseling, and again when the ears begin to develop, ensures adequate nutrition for strong kernel formation. Third, proper irrigation is vital, especially 15 days before tasseling. If soil moisture drops below 80% of field capacity, immediate watering should be done to support pollination and grain filling. Finally, artificial pollination can be used during the flowering period. By shaking the tassels or using a rope method every 2–3 days, farmers can increase the chances of successful pollination, which directly reduces the occurrence of bald tips.
Â
Â
Home Elevator,Household Elevator,Home Lifts,Elevator Home Residential
APSL ELEVATOR TECHNOLOGY(SUZHOU) CO.,LTD. , https://www.fujiapsl.com