Cotton buds control cotton bollworm and blind mites

October 26, 2023

In the winter and spring, the air is mainly arid, which is beneficial to cotton bollworms. At present, barley and rapeseed cotton in Xinghua area have entered the bud stage, which is conducive to the occurrence of various diseases and insect pests. In particular, the number of second-generation cotton bollworms has increased significantly, and blind elephants have been sporadic. According to a comprehensive analysis of factors such as insects, cardinality and weather, it is expected that the second generation of local blind mites will occur earlier this year than in the previous year, and the incidence is lighter. The second generation of cotton bollworms occurred earlier than last year, similar to normal years. Medium to heavy.

It is suggested that in the peak period of the second-generation green-spotted adult worm and the middle-aged nymph of the black-spotted nymph (June 24-25), the lower larvae of the cotton bollworm will be applied for prevention and control at the peak period (July 1-3). For the prevention and control of blind mites, use 140% of 12% Marathon emulsifiable concentrate or 140% of 45% malathion emulsifiable concentrate per acre. For the control of cotton bollworm, 80 ml of 30% chlorine·ma·phosphos emulsifiable concentrate per acre, or 80 ml of 25% carbamic acid phoxim emulsifiable concentrate and water. For the field where red spiders occur, 20 g of 20% hydrazine WP or 60 ml of 1.8% avermectin emulsifiable concentrate per acre is added. Pay attention to the addition of sufficient water and even fine spray, barley, rapeseed and other transplanted cotton fields should be controlled sooner rather than later.

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