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What are the methods for controlling aphids during the cotton seedling stage?

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The suitable temperature for cotton seedling aphids is 18°C to 25°C, and after rain the temperature rises quickly, which is very suitable for seedling aphids in terms of temperature, and there is a possibility of a heavier outbreak of seedling aphids. 1. Agricultural control: eradicate weeds in cotton fields, strengthen water and fertilizer management, and promote early development of cotton seedlings; combined with thinning and final thinning of seedlings, pull up aphid-infested plants and carry them out of the field to be burned in a concentrated manner. 2. Chemical control: before the seedlings have 3 true leaves, when the rate of curled-leaf plants reaches 5% to 10%, and after 4 true leaves when the rate of curled-leaf plants reaches 10% to 20%, use 10% imidacloprid wettable powder

The suitable temperature for cotton seedling aphids is 18°C to 25°C, and after rain the temperature rises quickly, which is very suitable for seedling aphids in terms of temperature, and there is a possibility of a heavier outbreak of seedling aphids.

1. Agricultural control of cotton

Eradicate weeds, strengthen water and fertilizer management, and promote early development of cotton seedlings; combined with thinning and final thinning of seedlings, pull up aphid-infested plants and carry them out of the field to be burned in a concentrated manner.

2. Chemical control

Before the seedlings have 3 true leaves, when the rate of curled-leaf plants reaches 5% to 10%, and after 4 true leaves when the rate of curled-leaf plants reaches 10% to 20%, use 10% imidacloprid wettable powder at 15 grams per mu mixed with 30 kg of water for uniform spraying, or 10% acetamiprid emulsifiable concentrate at 3000 times dilution, or 20% acetamiprid wettable powder at 1500 to 2000 times dilution, or 20% carbosulfan emulsifiable concentrate at 2000 to 4000 times dilution. When spraying, focus on the young leaves of the cotton seedlings and pay attention to turning the nozzle to spray toward the underside of the leaves.

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