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Detailed Explanation of Key Technical Points for Controlling Tomato Gray Leaf Spot
Tomato Gray Leaf Spot Control Techniques
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Characteristics and Control Methods of Garlic Gray Leaf Spot
(1) Symptom characteristics: It mainly affects the leaves. The lesions are long elliptical, initially light brown, later turning grayish white. On both sides of the leaves, the lesions produce fine grayish-black mold-like growth. In severe cases, the lesions merge, causing localized death of the leaves. The disease is severe in weather with warm days and cool nights, heavy fog, and heavy dew. (2) Control methods: ① Promptly remove damaged leaves...
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How to prevent and control corn gray leaf spot? A full analysis of the technical key points
Corn gray leaf spot can occur throughout the entire growth period, but the disease is most severe at the tasseling and grain-filling stages. In the early stage of the disease, water-soaked light brown spots appear. These streaks extend parallel to the leaf veins, are often rectangular, and are more obvious when held up to the light. The center of the lesion is gray, and the edge has a brown line. The lesion size is 2-4 x 10-24 (mm), and...
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Detailed Explanation of Key Points for the Prevention and Control of Soybean Gray Leaf Spot
1. Symptoms: It mainly damages the leaves of adult plants and also infects seeds, seedlings, stems, and pods. On the cotyledons of seedlings grown from diseased seeds, round brown lesions appear. Later, irregularly shaped lesions may also form. When humid, the central part of the lesions on the underside of the leaves mostly produces a gray mold layer, which is the pathogen's conidia. 2. Control methods: ...
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