After the Meiyu period, the diseases and insect pests in the vegetable field are warm and drought-prone. In particular, the small, often overlooked, devastating pests of individuals such as Chaetoceros, Liriomyza sativae, and whitefly are threatening the growth of vegetables in the field.
Pests
Liriomyza sativae is currently breeding and harming from the bottom up, such as loofah, cowpea, cucumber, and “three-sweet†vegetables, and tends to occur more seriously. Should be sprayed during the incubation period of egg incubation. Applicable drugs include 50% ciprofloxacin aqueous solution, NDF 52.25% chlorpyrifos chlorpyrifos, 30% avermectin wettable powder, kung fu 2.5% lambda-cyhalothrin. Emulsifiable concentrates, 48% chlorpyrifos, 40% dimethoate, etc.
Camellia sinensis is currently harmful to most vegetables, and high temperature and drought are extremely beneficial to its occurrence. Can use 24.5% Avi diesel oil, 5% thiazolyl ketone EC, 73% of Keyite special alkyd emulsifiable concentrate, 52.25% chlordecone chlorpyrifos farmland EC such as spray control, focusing on the back of the young leaves.
In recent years, whiteflies have occurred from autumn to the fourth quarter of the year, and protected areas have suffered the most. At present, it is harmful to eggplant, tomato, pepper, cucumber, and kidney bean. It can be controlled by imidacloprid and lambda-cyhalothrin spray.
Soybean sprouts occurred moderately in the middle of the year and can be sprayed and controlled at 7 to 10 am. Applicable drugs include Bacillus thuringiensis and fenvalerate.
Twenty-eight star beetles currently have a large amount of insects on the eggplant, and should pay attention to catching adults, picking eggs, and use fenvalerate, deltamethrin, lambda-cyhalothrin spray control.
Disease
Bacterial angular spot cucumbers, melons and other cucurbit crops can suffer. Sterilization of seed and sealing of greenhouses after summer irrigation are beneficial to disease prevention. 72& agricultural streptomycin wettable powder, 2% kasugamycin wettable powder, Fenghu'an 77% copper hydroxide wettable powder, Garenong 47% spring thunder-copper wettable powder spray control, spraying before onset The effect is good, and it is difficult to effectively control the application after onset.
Viral disease Summer and autumn is a season in which Solanaceous vegetables virus disease occurs frequently. It is important to take active measures to prevent and treat diseases. The nursery bed is sprayed with copper alkanolate sulfate (plant disease) or copper acetate (virus A) for 7 to 10 days and continuously controlled for 2 to 3 times.
Other diseases are currently younger than those exposed to sweet potatoes and bean crops, but they are heavier in the protected areas. The condition of bean rust and coal mildew disease rises rapidly. The rust is the main protection zone, and the open field is dominated by coal fungal disease. These diseases can be controlled with triadimefon spray.
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