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Complete Guide to Summer Corn Pest and Disease Control
How do you control summer corn pests and diseases? Here is an introduction. During the summer sowing period and seedling stage, many types of pests, diseases and weeds occur, and the damage is severe. If control is poor, it very easily causes missing plants and broken rows, leading to reduced yield. Therefore, throughout the entire growth period of corn, carrying out comprehensive control of pests, diseases and weeds at the sowing and seedling stages is crucial. First...
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How can weeds be controlled effectively after sowing summer corn?
What is the best way to control weeds after sowing summer corn? Please give an introduction. Summer corn is generally sown in early June. During this period, temperatures are relatively high, and weeds grow quickly. Generally, 10 days after sowing, the peak of emergence is reached, and after 15 days, the number of emerged weeds can reach 90% of the total. Because corn plants are small during the seedling stage, they are vulnerable to weed damage. If not controlled in time, it can very easily...
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What are the methods for controlling pests and diseases in summer corn at the seedling stage
Which pests and diseases need to be controlled in summer corn at the seedling stage? Please introduce the control methods. The following pests and diseases need to be controlled in summer corn at the seedling stage: 1. Seedling-stage pest control. The main pests at the corn seedling stage are: armyworm, cotton bollworm, small brown planthopper, thrips, Swedish fly, etc. To control armyworm and cotton bollworm, 5% beta-cypermethrin or 2.5% cyhalothrin 50-75 g/mu can be used, sprayed with 30 kg of water. For the control of Swedish fly, when corn has just emerged (i.e. one leaf and one heart), spray 15% beta-cypermethrin·chlorpyrifos emulsifiable concentrate 50 mL per mu. If damaged plants appear in the field, those with severe damage should be pulled out promptly, and for lightly damaged ring-shaped plants, the tip of the plant should be cut off. To control the grain mealybug, use 50% phoxim emulsifiable concentrate 500-1000 mL/mu or 48% Lesiben emulsifiable concentrate 200-400 mL/mu for root drenching.
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How to effectively prevent and control citrus red spider mites on osmanthus
How to prevent and control citrus red spider mites on osmanthus? Looking for methods. The citrus red spider mite is a type of mite; adults, larvae, nymphs, and mites can all damage leaves and branches. Affected leaves develop small yellow-white spots, gradually turning grayish-white, with red spots, and in severe cases turning brown as if scorched by fire, then withering and falling off. Prevention and control methods: remove diseased leaves and burn them in a centralized manner....
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A Detailed Guide to Controlling Common Pests and Diseases of Osmanthus
How do you control common pests and diseases of osmanthus? Methods wanted. The pests and diseases of osmanthus trees include the following: 1. Leaf spot: it mainly damages the leaves, starting as small brown spots; the lesions are round or irregular, later gray to grayish white in the center with reddish-brown edges, and dark gray mold-like growth appears on the lesions. High temperature and high humidity are often the triggers, and it spreads through wind and rain, causing infection; after October the disease subsides. Control: 1) In winter, prune off diseased leaves and clear away fallen diseased leaves, and burn them in a centralized manner; 2) In early May, spray 1:2:100-200 Bordeaux mixture, after which you can spray 50% benomyl 1000 to 1500 times dilution or pyrazophos 500 times dilution or 70% thiophanate-methyl 1000 times dilution.
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Common Summer Pests and Diseases of Apple Trees and Their Control Methods
What pests and diseases of apple trees need to be controlled in summer? Here are several pests and diseases that may need to be controlled in summer apple orchards for reference: 1. Peach fruit borer: The larvae bore into the fruit and cause damage, resulting in deformed fruit development and the formation of "monkey-head fruit," "bean-paste-filled fruit," and the like. Commonly used pesticides are 2.5% Kung Fu at 1500x dilution, or chlorpyrifos...
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How to prevent and control hollow fruit in cherry tomato cultivation?
How to prevent and control hollow fruit in cherry tomatoes? Please introduce the methods. The appearance and quality of cherry tomato products are particularly important, requiring the product appearance, flavor, etc. to meet consumer needs. In production, hollow fruit often affects the quality and weight of the fruit, reduces its commodity value, and causes relatively large economic...
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Identification and Control Techniques for Diseases and Pests of Atractylodes macrocephala
Southern blight: Also known as "white sugar rot", it damages the rhizome of Atractylodes macrocephala, with no obvious symptoms on the aboveground parts in the early stage of the disease. Later, as temperature and humidity rise, the mycelium penetrates through the soil surface, and white mycelium densely covers the rhizome and the surrounding soil surface. The top shoots of the affected plants wilt, droop, and eventually the entire plant dies. Disease characteristics: soil and planting material are...
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What are the control methods for gray mold in Welsh onion?
How do you control gray mold in Welsh onion? Please give an introduction. Gray mold in Welsh onion, also known as white spot disease, is a major disease of Welsh onion. It mainly damages the leaves. In the early stage, white oval or nearly round spots appear on the leaves, mostly spreading downward from the leaf tip, gradually joining together into patches, causing the leaf tip to curl and die. When humidity is high, a large...
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What diseases need to be prevented and controlled during lotus root cultivation?
What diseases need to be prevented and controlled when growing lotus root? Please give an introduction. Lotus root is a high-yield, high-efficiency aquatic cash crop and a vegetable variety commonly eaten by the general public. It is widely cultivated in various regions, and with the adjustment of industrial structures in various places, its cultivation area tends to keep expanding. In recent years, lotus root diseases have become increasingly serious...
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