Whitefly in a vegetable field
Whitefly feeding is very miscellaneous, can endanger a variety of vegetables, mainly to harm nymphs, concentrated on the back of cucumber leaves to draw juice, resulting in leaf bleaching, yellowing, wilt, severe plant yellow. When it is harmful, it also secretes honeydew, contaminates the leaves, causes fungal infection, affects the photosynthesis of plants, and seriously affects the yield and quality. Whitefly should be avoided in mixed vegetable plots, especially cucumbers, tomatoes and beans. It is also an effective method to adjust the production of gargle, that is, head garcinia arrange celery, bell pepper and other white lightworms to endanger light vegetables, and then squat cucumber and tomato. Older nymphs are mostly distributed in the lower leaves, removing old leaves and burning them. Spraying 99.9% SK mineral oil 150-200 times in the greenhouse or setting yellow plates can effectively control whitefly. The use of a backpack-type motorized smoke generator atomizes 1% deltamethrin or 2.5% fenvalerate (fentaler) oil into droplets, which is effective when suspended in the air to kill adult insects. Can be used 25% buprofezin or with 10% Jinbu 4000 times or 2.5% deltamethrin or 20% fenvalerate EC 2000 times spray, spray every 6 to 7 days, continuous control 3 times. It can also be fumigated with aerosols for 2 to 3 consecutive times.
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