After the valley rain, many vegetables, melons and fruits have entered the vigorous growth stage, planthoppers, thrips also have greenhouses to notice the harm of open ground, these pests in the damage to crops at the same time, but also spread viral diseases, causing greater harm, therefore, in the daily cultivation and management of vegetables at the same time, but also pay attention to the prevention and control of planthoppers, thrips.
First, the main symptoms
Corn ash planthopper hazards, causing corn coarse shrinkage
Smoking whitefly is infested and causes tomato virus disease
Whitefly caused by cucumber virus disease
Cucumber virus disease caused by thrips
Thrips are infested by peppers that are heavily curled leaves
Second, morphological characteristics
Gray planthopper morphology
Adult whitefly morphology
Thrips morphology
Third, prevention and control methods
1, un sown corn, cowpea and other crops, before sowing, you can use 60% imidacloprid seed coating agent, or 70% thiamethoxine seed treatment agent, according to the drug seed ratio of 1:300 seed mixing, can effectively control the harm of planthoppers, whiteflies, thrips to corn, cowpeas.
2. Vegetables such as melons and nightshade fruits that are ready to be transplanted can be applied with 1% furoxacin granules or 2% thiamethoxenide granules, which can effectively prevent and control the harm in the early stage of the results.
3. For crops such as peppers, watermelons, eggplants, corn and other crops that have been colonized, 20% furazine soluble granules can be used for 2000 times liquid, or 50% flufenamidine nitrile water dispersible granules 4000 times liquid and other agents can be sprayed for control, and the validity of a spray can reach about 30 days. The effect is also very good.