Reasons why corn does not contain seeds
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August 15 12:48:44, 2025
In the process of corn cultivation, several factors can lead to poor kernel development, resulting in barren or partially filled ears. This phenomenon significantly affects corn yield and quality. Some ears may lack kernels entirely from the base to the top, while others may show uneven filling—such as bald tips, tailing, or scattered grains. In severe cases, entire ears may remain empty, which has a major impact on overall productivity.
The main causes of poor kernel development include:
1. **Insufficient Nutrient Supply**: During the ear formation stage, if the plant lacks essential nutrients, it can lead to poor kernel development. Proper fertilization is crucial for ensuring healthy growth and full ear formation.
2. **Unfavorable Temperature Conditions**: High temperatures above 35°C before and after tasseling can damage pollen, reducing fertilization success. Similarly, low temperatures below 16°C during the grain-filling stage can hinder dry matter accumulation, leading to underdeveloped kernels.
3. **Water Imbalance**: Corn requires adequate water during the critical growth stages, such as the silking and pollination periods. Drought during this time, known as "neck drought," can delay tassel emergence or cause tassels to die, reducing pollen availability and causing male-female flowering mismatches.
4. **Excessive Rainfall During Pollination**: Heavy rain can interfere with normal tassel function, causing pollen to swell, rupture, or clump together, thereby reducing its viability and affecting pollination efficiency.
5. **Overcrowded Planting**: When corn is planted too densely, air circulation and sunlight penetration are reduced, which can hinder plant growth and ear development, ultimately leading to fewer kernels.
6. **Pests and Diseases**: Corn is vulnerable to various pests and diseases, such as corn borers, aphids, armyworms, leaf spot, and smut. These can cause premature leaf senescence, reducing photosynthetic activity and contributing to empty ears.
By addressing these factors through proper management practices, farmers can improve kernel development and maximize corn yield. Ensuring balanced nutrition, maintaining optimal temperature and moisture levels, avoiding overcrowding, and implementing effective pest control measures are all essential steps in preventing barren ears and achieving better harvests.