The common underground pests of corn include tigers, crickets, crickets, and larvae. The underground pests seriously affect the yield of corn. What are the special effects of corn pests? Let us take a look at it.
Tiger
First, combined with soil testing and formula fertilization, nitrogen control, phosphorus fertilizer control, micro-fertilizer, potassium fertilizer (3 to 5 kg per acre of zinc fertilizer, potassium dihydrogen phosphate).
The second is to use 3% phoxim particles 2 to 3 kg, water 3% phoxim, 5.7% cyfluthrin, etc., can be sprayed on the floor, or 0.5 kg 90% trichlorfon hot water, add water 5 Kg, spray on the sauteed oil residue and mix well. Spread in the evening near the root, use 4 to 5 kg of bait per acre.
The third is to take measures that combine moth, weeding, pharmacy, and labor to effectively control the damage.
Grub
The first is to plow the fine hoes, kill the insect source, or rotate the crops or the water and dry crops.
Second, during the adulthood period, black light is set in the field to trap adults.
The third is to use 0.5 liters of 50% phoxim emulsifiable concentrate, or 0.5 liter of 40% methyl isoflavone emulsifiable concentrate, and 10 to 20 bottles (100 ml/bottle, 20 liters of water), and 200 kg of corn.
The fourth is to use 15 liters of 40% methyl isoflavone per hectare plus 5 liters of water and soil, spray 300 kg of fine tidal soil, and apply it to the seeding ditch when planting.
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The first is to plow the land.
The second is the rotation of the crop or the drought and water rotation.
The third is to set up black light in the field to trap adults.
The fourth is to use 40% dimethoate or 90% crystal trichlorfon 0.7 kg, add appropriate amount of water, stir-fry into a bait (bean cake, wheat bran, cottonseed cake, etc.) 50 kg, made poison bait, digging one every 3 to 5 meters A large pit in the bowl, covered with a poison bait in each pit in the evening.
Two-pointed moth
The larvae are in the period from late June to mid-July. The first is to scatter bait, use 4 to 5 kilograms of sauteed wheat bran or smashed cotton seed cake after smashing, and trichlorfon (stomach venom, both contact and killing effect) or chlorpyrifos (touching, stomach poisoning) against a small amount of water. , fumigation effect) 500 grams mixed into a poison bait, in the evening sloping ridge on the corn seedlings.
The second is to use poisonous sand, and use 25 to 500 ml of dichlorvos to mix 25 kilograms of fine sand. In the morning, the ridges are scattered on the side of the corn seedlings.
Golden worm
Mainly control seedlings to control larvae, taking into account the prevention and control of growth and long-term, and pay attention to the prevention and control of adult traps. The first is to plow the land.
The second is the rotation of the crop or the drought and water rotation.
The third is to set up black light in the field to trap adults. The fourth is to use 0.5 liters of 50% phoxim emulsifiable concentrate, or 0.5 liter of 40% methyl isoflavone emulsifiable concentrate, 10 to 20 bottles (100 ml / bottle), 20 liters of water, and 200 kg of corn.
In addition, pesticide seed dressing is also an effective means to control underground pests in corn. You may wish to try it out. If you want to get more knowledge about pesticides , please pay attention to China Pesticide Net.
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