What are the causes of and solutions for empty stalks in corn

Empty stalks in corn are a common phenomenon during corn cultivation and have become one of the important causes affecting corn yield. An empty stalk in corn means no ear is produced. The normal empty stalk rate is about 2%, with relatively small losses, but once it becomes severe it can reach 30%, causing huge economic losses to farmers. So what causes empty stalks in corn? Let's take a look together with Qinnong Web.

1. High planting density

When planting corn, under the same planting environment, as planting density increases, the empty stalk rate of corn will also gradually increase. High planting density leads to poor ventilation in the field and insufficient light, reducing photosynthesis in corn. Fewer nutrients are synthesized, resulting in insufficient nutrition and causing empty stalks.

Solution: Plant at a reasonable density. Different varieties have different requirements for planting density. When selecting seeds, you must adapt to local conditions and determine the appropriate planting density according to the variety, local environment, and cultivation method. Ensure ventilation and light transmission during corn growth, so that the stems grow thick and strong, satisfy the photosynthesis of the leaves, and provide sufficient nutrients for the full development of the ears.

2. Low fertility

If fertility is insufficient during planting, corn growth cannot obtain sufficient nutrients, causing poor development and empty stalk phenomena. In addition, excessive use of a single fertilizer results in a higher empty stalk rate than formula fertilization.

Solution: When planting, you must apply sufficient fertilizer to ensure nutrient supply, but at the same time fertilization should not be single. Combine organic fertilizer and chemical fertilizer, apply sufficient base fertilizer at planting, coordinate with topdressing, and reasonably match nitrogen, phosphorus, and potassium fertilizers to ensure the nutrients needed for the growth of stems and ears.

3. Insufficient water

During the growth of corn stems and ears, a large amount of water needs to be absorbed from the soil. However, if the soil is too dry, causing insufficient water supply, corn will grow short, thin, and weak, leaves will turn yellow and wither, ear differentiation will be blocked, and empty stalk phenomena will appear.

Solution: During the jointing and tasseling stages of corn, if there is high temperature and drought and the soil is too dry, water promptly to ensure the needs of corn growth. Pay attention to the amount when watering. If too much water is applied, drain it promptly to avoid a counterproductive effect, which can also cause empty stalks.

4. Rainy weather

During the tasseling and pollen-shedding period, if long-term rainy weather occurs at this time, pollen will absorb too much water and swell and rupture, die, or stick together into clumps, causing the pollen to lose its fertilizing function and forming empty stalks.

Solution: During this period, if the cause is weather, it is unavoidable. Artificial pollination can be carried out at this time to reduce the probability of empty stalks.

5. Pests and diseases

During corn growth, it will suffer from many pests and diseases. Diseases mainly harm plant growth and development, causing the plant to grow weakly and poorly, and in severe cases can cause death. Pests mainly gnaw leaves and roots, destroy conductive tissues, cause water and nutrients to be unable to transport normally, and finally lead to tissue necrosis and the formation of empty stalks.

Solution: When planting, attention must be paid to the prevention and control of pests and diseases, and you must not be negligent. Strengthen daily management. Once pests and diseases are found, deal with them promptly. After confirming a certain pest or disease, apply the right treatment to eliminate the pests and diseases and ensure smooth planting and growth.

The above are the causes of and solutions for empty stalks in corn brought to you by Qinnong Web. The content about empty stalks in corn is introduced here. For more information, please stay tuned to Qinnong Web.