Ⅰ. Vegetables
April is the spring season, and it is also the growing season for many crops. However, spring is also a more serious pest season. Therefore, many crops need to use pesticides to control insect pests. For example, vegetables such as cucumber, watermelon, eggplant, and pepper are vulnerable to pests such as borers, spotted leafhoppers, and whiteflies during the growing season. To protect these crops, pesticides containing control against these pests, such as cypermethrin, imidacloprid, etc.
In April, the vegetable diseases and pests that should be focused on include gray mold, downy mildew, aphids, diamondback moth, and other diseases and pests include sclerotia, leaf miner, and yellow stripe jump. In terms of prevention and control, we should pay attention to the prevention of diseases, and timely check and treat insect pests to ensure the normal growth of vegetables in the field in spring.
The occurrence of main diseases and pests and pharmaceutical control suggestions.
(1) Gray mold: This disease is the main disease on local tomatoes and will enter the peak stage in the middle of April. Before the onset of cucumber, manganese zinc (M-45) can be used for the prevention of cucumber, and in the later stage, graft (fast), anisoclurea (buhein), pyrimethamycin, diacilamide, pyritocycloisocourea, and other agents can be used.
(2) Downy mildew disease: The disease is a common disease on the local spring lettuce, spinach, melons. Early planting melons (cucumber) will enter the peak growth period in late April. It can choose a cream, manganese zinc, frost urea, manganese zinc, evil frost manganese zinc, enolymorpholine, frost mildew, and other agents.
(3) Aphids mainly harm beans, cruciferous, solanum, melons, and other vegetables. Through recent control, aphids are under effective control. It can choose amidine, imidacloprid, amine, and other agents, and treat fruit vegetable lacia tabaci.
(4) Diamondback moth: According to a survey, cauliflower in 13 fields had an average of 12.6 to 100 plants, with a range of 0-100 heads, mainly young larvae in the field. Abamectin, vitamins, acitral, ethyl polybiocidin, thuringiensis, and other agents can be selected.
(5) Other diseases and insects: Fusarium wilt disease can be treated with Rotmilben, isobacterium urea, acinamide, methylsulfur bacterium agent. Leaf miners can be treated with avermectin, phoxim, and other agents. Soil treatment of yellow stripe jump can be used to control larvae. In the seedling stage, it can be used, in the late stage of growth, high fluoride (arica), high fluoride (fuqi), benzamide, and other agents can be used for control. In the case of mixed occurrence of various diseases and insect pests, targeted agents can be used together.
Matters and Attentions
Continuous use of the same agent; do not increase pesticide use; stop medication 7-10 days before harvest to avoid excessive pesticide residues.
Post time: Mar-30-2023
