The yellow leaf of corn seedling is a very troublesome problem. Let's share with you the yellow leaf full solution of corn seedlings today!

Maize deficiency syndrome

Corn is a zinc-sensitive crop. White zinc seedlings appear in zinc deficiency, which looks like corn seedlings. Generally, zinc fertilizer is better for base application; if zinc deficiency is found during the growth period, it will appear to be long and the leaves are small.

Corn sowing too deep

If the seeding is too shallow, it will not be easy to emerge. If it is too deep, the seedlings will be weak and the seedlings will be yellow. The sowing depth should be controlled at 3-5 cm. When planting, a certain amount of fertilizer will be applied to promote the growth of seedlings, such as per acre when planting. 3 kg of diammonium phosphate can effectively prevent yellowing of corn seedlings.

Maize seedlings and seedlings are not timely

After the emergence of corn, the seedlings should be planted in 3-4 leaves of corn, and the seedlings should be fixed at 6-7 leaves to avoid crowding of seedlings, competing for each other, fighting for water and glory, forming weak seedlings, diseased seedlings and yellow seedlings; The number should be flexibly controlled according to the variety, and the seedlings should be fixed according to the density required by the cultivar.

Insufficient corn watering

Before the planting of corn or after sowing, the water is not enough, and the seed does not get enough water, which affects the normal germination and emergence. The unearthed time is too long, resulting in weak seedlings and yellowing at the seedling stage.

Corn disease

If the seedling period encounters long-term low temperature and rainy weather, it will cause the occurrence and prevalence of corn seedling blight. The seedling blight began to develop in the second and third leaves. The leaves of the seedlings were yellow and dry, and the edges were scorched. The leaves gradually turned yellow and dry from bottom to top; the root hairs were less, and the roots became brown and poorly developed, resulting in weak seedlings.

Corn waterlogged seedling

The water-stained seedlings are often in the rainy season, and the low-lying land is poorly drained or the water is accumulated in the rolling water when the wheat is harvested, resulting in yellowing.

Corn herbicide hazard

Inappropriate use of herbicides A small number of farmers arbitrarily increase the amount of herbicides; blindly mixed with other pesticides; the concentration of the drug is too high; sprayer interoperability; the impact of counterfeit and herbicides on the post-production will cause corn yellow seedlings.

Corn pest

The main insect pests of maize seedlings are cotton bollworm, golden worm, aphid, armyworm, thrips, swiss squid, ground tiger, stalked stalk, etc. The nymphs and female adults are concentrated in the base of the near-stem of corn seedlings. In the roots and sheaths, the juice is absorbed, causing the damaged corn leaf sheath to first turn yellow and dry.