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This month, the temperature in Lin’an City has gradually dropped, but it is often accompanied by humid thunderstorms. Typhoons frequently occur during this period, bringing heavy rainfall and increasing the risk of pests and diseases. As a result, effective pest management for vegetables has become more critical than ever.
**Pest Control for Cruciferous Vegetables**
The onset of cruciferous clubroot disease is now evident, along with downy mildew, soft rot, anthracnose, leaf spot, black spot, and virus diseases. The fourth generation of beet armyworms, Spodoptera litura, and cabbage noctuid moths are also becoming active. Populations of Plutella xylostella and Pieris rapae have increased, leading to a higher presence of insect pests in the fields. This makes pest control more challenging, so timely intervention during the early larval stages is essential.
**Pest Control for Legume Vegetables**
September marks the peak season for Liriomyza sativae infestations. It’s crucial to intensify monitoring and control measures for crops like autumn beans, late cowpeas, and lentils. Late cowpeas should continue receiving attention for bean pod borer prevention. During the peak period, pyrethroid pesticides can be applied in the morning to manage flower pests. Additionally, ongoing efforts are needed to prevent rust, powdery mildew, and viral diseases.
**Pest Control for Cucurbit Vegetables**
This month, the main pests affecting cucurbits include Guaiac and Liriomyza sativae. During the egg hatching period, apply a 500-fold dilution of bifenthrin to control melon ticks. For the first to third instar stages, fipronil can be used. To manage Liriomyza sativae, ciprofloxacin and insecticidal agents are recommended. At the same time, continue to monitor and control diseases such as anthracnose, powdery mildew, bacterial leaf spot, and bacterial blight, as well as pests like aphids, thrips, and red spider mites.
**Pest Control for Solanaceous Vegetables**
Continue to monitor and manage pests like eggplant tea thrips, spider mites, aphids, eggplant twenty-eight ladybugs, brown stripe disease, pepper anthracnose, powdery mildew, and virus diseases. For autumn tomatoes, pay special attention to cotton bollworms and Liriomyza sativae.
**General Vegetable Pest Control**
Keep an eye on corn smut, large and small leaf spots, rust, and corn borers. These pests can cause significant damage if not controlled effectively.
**Pre-Winter Cultivation Preparation**
Take advantage of the good weather to prepare the nutrient soil for seedlings. Deep plowing and soil preparation should be done in advance for winter planting. In some areas, solanaceous vegetables are entering the nursery stage, so it's important to implement preventive measures against diseases at this early stage.