What are the insect pests in maize seedling stage

The seedling stage of maize is the period with the most species, the most concentrated occurrence and the most serious harm of pests. If it is not prevented in time, losses may be caused. So what are the insect pests in corn seedling stage?

1. Thrips

It mainly harms the heart leaves, generally harms the tender leaves in the seedlings, and can secrete toxins to simulate the growth of corn, silver-gray classes appear on the leaves, the leaves fade and turn yellow, and some leaves are broken, deformed and twisted can not be spread out like an ox's tail. the emergence of corn seedlings can be harmful, seriously affecting the growth and jointing of corn.

2. Corn spirulina

The damage is later than that of wheat stalk flies, mainly because the larvae drill into the inside from the rhizome of the seedlings, resulting in the wilting heart of corn and the curling deformation of leaves.

Third, the third and fourth generations of wheat straw flies

Harm summer sowing corn, millet and other crops. Corn can lay eggs as soon as it emerges, and maggot larvae emerge in about three days, and most of them show symptoms in two to four leaves of corn. It mainly harms the heart leaves, causing adhesion and decay of the heart leaves, showing withered hearts or various deformities, such as the heart leaves cannot be unfolded, grow in bundles and bend, the edges of the expanded heart leaves are broken and yellowed, and there is transparent mucus, some of the top leaves are scattered and wrinkled, some leaves appear longitudinal cracks and white stripes, and some plants dwarf and show abnormal tillers, which can not grow sticks. The variety, sowing date and the number of firewood and grass are directly related to the occurrence and harm.

Fourth, armyworm and other pests

Generally, harm can be formed in late June, and armyworm has the property of migration, which often causes serious local harm to eat up the seedlings.

Other planthoppers, leafhoppers, bug bugs, red spiders

It mainly harms the leaves and sucks the sap of the leaves, causing withered spots and spots on the leaves, and seriously causing withered tips and dry leaves.

Although there are many pests in maize seedling stage, the occurrence time is concentrated and the relative harm time is relatively short. As long as the prevention and control work is done, it can be well prevented.