Why does corn have roots but no shoots, and how to prevent it

During the process of corn germinating after sowing, many people encounter the phenomenon of roots but no shoots or shoots but no roots. This phenomenon brings great trouble to farmers, and many people often do not know what to do. So what causes corn to have roots but no shoots? And how to prevent it? Let's take a look at the detailed introduction together.

1. Causes

1. Sowing quality: When planted in relatively heavy clay soil, sowing too deep and poor soil permeability will affect seed germination.

2. Seed coating phytotoxicity: When many farmers carry out coating, using too much pesticide and coating unevenly will damage the seed embryo and affect normal germination.

3. Fertilizer burning of seedlings: When applying base fertilizer or seed fertilizer, if isolation measures are not done well, the seeds and concentrated fertilizer will come into direct contact, which can easily cause shoot or root burning.

4. Temperature too low: After sowing, the temperature is relatively low, but the soil moisture is relatively high and aeration is poor, which affects the differentiation of the seed shoot.

5. Underground pests: After sowing, underground pests gnaw the shoots or roots, causing the seeds to be unable to grow normally.

6. Herbicide phytotoxicity: When weeding before and after sowing, improper use of chemicals causes the liquid to seep downward, affecting seed germination and root formation.

7. Freeze damage: If the seeds are not dried in time after harvest, low-temperature freeze damage will directly freeze-injure the radicle and plumule, causing them to fail to develop normally.

8. Mechanical damage: During seed production, the plumule or radicle is damaged by equipment, causing it to fail to germinate normally.

2. Prevention methods

1. Before sowing, carry out measures such as seed selection and sun-drying the seeds to ensure seed vigor. When coating, control the amount of pesticide applied and ensure even coating.

2. When sowing, control the sowing depth according to soil moisture. When moisture is high, sow appropriately shallowly, and at the same time sow appropriately late. If heavy rain occurs after sowing, drain water in time. Pay attention to methods when fertilizing, and it is not advisable to let seeds come into direct contact with fertilizer.

3. The use of herbicides must be strictly carried out according to standards. In low-temperature weather, preventive measures should be taken well to reduce the degree of freeze damage to seeds.

The above is an introduction to the causes of corn having roots but no shoots and the prevention methods. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.