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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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How should orchid rhizome rot be prevented and treated?
Orchid rhizome rot is a bacterial disease. It mainly occurs on the tiller buds. Initially, a water-soaked lesion the size of a mung bean appears at the base of the bud, which later becomes a dark green, scald-like large patch that extends to the outside of the bud sheath, showing dark brown rot; diseased leaves are easy to pull out. Control measures: ① Control soil moisture content; for already diseased potted flowers, stop watering...
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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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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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