Caddisflies
grubs
Golden needle worm
cutworm
Root maggots
cricket
Root earth bugs
Root aphids
Quasi-ground armor
termite
Rice root leaf beetle
Cane root earth cattle
Walnut root weevil
Prevention Methods
First, the drug seed mixing:
Use methyl phosphorus, octyl thion and other seeds, and the amount of seed mixing is 0.1 to 0.3% of the seed weight. Specifically, 60% methylphosphorus, 40% methyl isosalphosphorus is 0.2%, 50% octyl thiophos is 0.1%, and 20% methyl isosalphosphorus emulsion is 0.3%. First dissolve the agent with about 3 kg of water, then spray it evenly on the seeds and mix well, dry until it is semi-dry and sow. Mix seeds according to 0.01 to 0.1% of the seed weight. This method can also be used for seeding of vegetable crops.
2. Sprinkle poisonous soil:
Use 40% Lesben to control underground pests, mix fine sand soil 15 to 20 kg per 150 ml, and also use 75% octyl thionate or pyrethroids and other emulsions, respectively, in the ratio of 1:2000 to mix into poisonous soil, 20 to 25 kg per acre, spread near the crop.
Third, the poison bait booby trap:
Stir-fry cornmeal with 90% crystalline 30 times the solution, add green vegetable leaves, and sprinkle on the ground around the crop in the evening. Or chop fresh grass or vegetables, use 50% octyl thiophos 100 grams plus water to adjust 2 to 2.5 kg, spray on 1000 kg of grass, in the evening divided into small piles placed in the field, booby trap tigers. Each mu is mixed with fried fragrant (soybean cake, wheat bran, sorghum, corn, etc.) feed 1.5 to 2 kg, or 50% octyl thiophos 50 grams, or 40% methyl isothion 50 grams plus water mixed evenly, sprinkled around the field crop rhizosphere in the evening, the anti-effect of tigers and caddisflies on the ground can reach 80 to 90%.
Fourth, spray prevention and control:
With 50% octyl thiophos 800 times liquid, along the ridge for ground spraying, with 25% bromide 30 to 40 liters of water plus 75 kg of water after sunset for routine spraying, stems and leaves should be sprayed wet, sprayed 1 to 2 times, can effectively kill the tiger.
Fifth, the chemical treatment of soil:
Use 50% octyl thiophosphorus emulsion 200 to 250 grams per acre, add water 10 times spray on 25 to 30 kilograms of fine soil and mix well to make poisonous soil, apply along the ridge, and then shallow hoe.
Source: Agricultural Assistant
Public welfare plant protection