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How can corn northern leaf blight be controlled effectively?
How is corn northern leaf blight treated? Please explain. Corn northern leaf blight has long been a major epidemic leaf disease threatening the safety of corn production in Shangluo. This disease often causes the most severe damage in summer-sown corn. Occurrence characteristics: First, there are significant differences in disease resistance among corn varieties. Surveys have shown that varieties such as Zhengda 12, Yuyu 22, Nongda 3138, and Anyu...
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How should rice seedling stunting be prevented and controlled?
How can the quality of rice seeds be identified? Please guide. To identify the quality of rice seeds, you can refer to the following methods: Check the uniformity. Seeds mixed with other rice grains have irregular grain shapes and different degrees of grain plumpness. Check the glume color. The grain color of good seeds should be relatively consistent and the color relatively fresh...
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What pests and diseases need to be controlled in early spring wheat?
What pests and diseases should be controlled in early spring wheat? Please provide guidance. Early spring wheat needs the following pests and diseases controlled: For controlling sheath blight and take-all, after wheat turns green in late February, use 20-30 grams of 12.5% Hexaconazole wettable powder or 50-75 grams of 15% triadimefon wettable powder per mu, mix with 50-75 kg of water, and spray evenly on the stem base to prevent...
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What diseases need to be prevented and controlled when growing sweet peppers?
What diseases need to be prevented and controlled when growing sweet peppers? Please give an introduction. When growing sweet peppers, the following diseases need to be prevented and controlled: Phytophthora blight. In the early stage of the disease, fumigate each mu with 110 g to 180 g of 45% chlorothalonil smoke agent, once every 7 days, 3 to 4 times depending on the severity of the disease, or dust each mu with 1 kg of 5% chlorothalonil dust, once every 7 days,...
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What diseases should be prevented and controlled during the cultivation of white sesame?
What diseases should be prevented when growing white sesame? Please explain that the following diseases should be prevented when growing white sesame: 1. Characteristics of major disease occurrence. The main sesame diseases include sesame stem spot blight, sesame Fusarium wilt, sesame bacterial wilt, sesame Phytophthora blight, etc. 1. Sesame stem spot blight. Sesame stem spot blight is also called sesame stem blight, sesame black root madness, etc.
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What pests and diseases should be prevented and controlled when growing bitter melon?
What pests and diseases should be prevented and controlled when growing bitter melon? Please provide an introduction to the control methods. The pests and diseases of bitter melon cultivation include the following and their control methods: 1. Powdery mildew. Symptoms of damage: mainly damages leaves. At the early stage of the disease, nearly circular small white powdery spots appear on the front or back of the leaves, mostly on the back of the leaves, and later the spots gradually expand, ...
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What diseases should be prevented and controlled when growing sunflowers?
What diseases should be prevented and controlled when growing sunflowers? Please give an introduction. Sunflowers need prevention and control of the following diseases: I. Symptom identification 1. Sunflower rust is an important disease of sunflowers, reducing yields by 40-80% in pandemic years. After infection, rust-like spore piles can form on leaves, petioles, stems, flower discs and other parts. When leaves are infected...
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Corn lodging causes huge losses, so how can it be effectively prevented and controlled?
Generally speaking, lodging can be divided into root lodging and stem lodging. The former is related to cultivation measures and the environment, while the latter is more related to variety-specific characteristics. But no matter which type of lodging occurs, it causes huge losses to crop yield...
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What diseases need to be prevented and controlled in the cultivation of yardlong beans?
What diseases need to be prevented and controlled in the yardlong beans being grown? Please give an introduction. The main diseases of cultivated yardlong beans are as follows: 1. Identification and control of cercospora leaf spot. 1. Symptoms: It mainly damages leaves, stems and vines, and pods. In the early stage of the disease, purple-brown spots appear on both sides of the leaves. After they expand, they become nearly round dark brown lesions, 1~2 cm in diameter...
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What pests and diseases should be prevented and controlled when growing chives in summer?
What pests and diseases should be prevented and controlled when growing chives in summer? Please explain. Chives should have the following two pests and diseases prevented and controlled in summer: prevent and control Fusarium wilt. In summer and autumn, high temperatures, or hot sun exposure after rain, make Fusarium wilt prone to occur. The symptoms are water-scalded lesions near the ground, and in severe cases the whole plant dies. In terms of management, pay attention to...
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