What to Do If Wheat Emerges Unevenly? Causes and Remedial Measures

After sowing wheat, you have to deal with the emergence issue. In previous years, many growers have reported the problem of uneven emergence, asking what causes uneven wheat emergence and how to remedy it. Let's take a look at the detailed information together below.

1. Causes of Uneven Emergence

1. Seed causes

When wheat seeds are stored improperly, the germination rate decreases, and this is especially serious with self-saved seeds. Also, when seeds are harvested under adverse weather, their plumpness is affected, resulting in poor germination vigor, weak ability to push through the soil, and uneven emergence. Many farmers mixing new seeds with old seeds when sowing is also one of the factors leading to uneven emergence.

2. Poor soil

Wheat soil management is relatively extensive, and moisture in the soil dissipates quickly, making it difficult for seeds to emerge or slowing their emergence. In addition, tillage reduces large clods, making the soil relatively loose, and after watering, exposed-seed seedlings and needle-like seedlings form, seriously affecting the wheat's normal overwintering.

3. Insufficient nutrients

In plots where wheat is planted without base fertilizer or with too little base fertilizer, the lack of nutrients in the soil causes the wheat to turn yellow and grow poorly. If undecomposed organic fertilizer is applied as base fertilizer, or the fertilizer application is too low, seedling burn and seed damage are likely to occur.

4. Weather causes

Wheat seed germination and sprouting, as well as seedling emergence, have certain requirements for soil temperature and moisture. If sowing is too late and the temperature is low, the emergence rate decreases and the emergence time is prolonged. Drought at sowing, or soil crusting caused by heavy rain on clay soil, can also affect emergence.

5. Pests and diseases

If seeds are not coated or treated with chemicals before sowing, they are susceptible after sowing to underground pests such as white grubs, cutworms, wireworms, and mole crickets, causing missing seedlings and broken rows. If wheat is sown too late, under low-temperature and high-humidity conditions it is highly susceptible to infection by pathogens, leading to disease and dead seedlings. Or, when herbicides are used, pesticide residues may cause phytotoxicity, which also affects normal emergence.

2. Remedial Measures

For plots with uneven emergence and missing seedlings or broken rows, after full emergence you can replant with seeds of one variety. For wheat fields with missing seedlings in a few places, you can take measures to move dense seedlings to fill sparse areas. If late sowing encounters low-temperature weather, hoe to preserve soil moisture and increase temperature to promote the seeds to emerge as quickly as possible. For plots with soil crusting, cultivate and loosen the soil in time to break the crust. Pest and disease control should be done carefully. For phytotoxicity caused by herbicides, you can spray brassinolide and foliar fertilizer to alleviate the phytotoxicity and promote weak seedlings to become strong.

The above is an introduction to the causes of uneven wheat emergence and remedial measures. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.