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What are the control methods for the three major soybean diseases?
Soybean root rot: This disease can occur and cause damage throughout the entire growth period of soybean, with yield reductions ranging from 25% to 75% or more. The protein content of infected seeds is significantly reduced. The main symptoms are dark brown lesions appearing at the base of the stem and spreading upward to varying degrees to the lower lateral branches, causing the pith of the diseased stem to turn brown, the base of the petiole to constrict...
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What are the control methods for soybean mosaic virus disease?
Suihua City in Heilongjiang Province is a major soybean-producing area, with a perennial soybean planting area of nearly 300,000 hectares. In recent years, the occurrence of soybean mosaic virus disease has shown a trend of worsening year by year, occurring in most fields, with the disease incidence rate in the field generally around 4.8%, and reaching over 20% in severe cases; the rate of brown (black) mottled seeds in soybean grain is over 10%,...
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How to prevent and control downy mildew in cabbage? Detailed explanation of control methods
In the early stage of the disease, pesticides such as 75% chlorothalonil wettable powder 600-800 times dilution and 70% mancozeb wettable powder 800 times dilution can be used for preventive protection. In mid-September, the early stage of the disease is the key period for control. You can use 58% metalaxyl·mancozeb wettable powder N700 times dilution, 20% flumorph wettable powder l000 times dilution, 60% flumorph...
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Main Pests of Overwintering Cabbage and Their Control Methods
1. Nutrient Solution Formula The nutrient solution formula for kale in the Beijing area is the same as that for hydroponic lettuce, so it will not be repeated here. 2. Nutrient Solution Concentration Management Kale has a strong ability to absorb nutrients and requires sufficient fertilizer. The nutrient solution concentration management index is 2.5-3.0 ms/cm, and this concentration can be used consistently from planting to harvest. 3...
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What are the control methods for black rot of cabbage?
Main symptoms: When the disease occurs at the mature plant stage, most lesions spread inward from the leaf margin, forming a "v" shape, and are yellowish-brown dead spots. The leaf tissue around the lesions is pale yellow, with no obvious boundary from the healthy part; sometimes the pathogen can spread inward along the leaf veins, forming a network of yellow veins. Causes of the disease: The primary infection source of this disease is seeds or in the soil...
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Methods and key technical points for applying sufficient basal fertilizer to mung beans
Although mung bean rhizobia have nitrogen-fixing ability, applying additional farmyard manure and phosphorus and potassium fertilizers has a clear yield-increasing effect. Before sowing, apply 2500 kg of farmyard manure, 20 kg of phosphate fertilizer and 1 kg of biological potassium fertilizer per mu as basal fertilizer. For fields where there is not enough time to apply basal fertilizer, during the early growth stage, that is, the branching and early flowering stage, apply 7.5 kg of ternary compound fertilizer per mu as topdressing...
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What to Do When Mung Beans Get Root Rot? A Detailed Guide to Prevention and Control Methods
(1) Symptoms In the early stage of the disease, the young leaves turn yellow. If the root system is pulled out for observation, the lower part of the stem and the upper part of the main root can be seen to be dark brown and slightly sunken. When the stem is cut open, the vascular bundles have turned dark brown. When most of the roots have rotted, the plant withers and dies. (2) Disease conditions Low-lying terrain, high soil moisture, low soil temperature, and poor root development make the disease likely to occur. Stormy weather helps the pathogen spread and proliferate.
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Detailed Explanation of Key Mung Bean Cultivation Techniques and Methods
(1) Apply sufficient base fertilizer. Although mung bean rhizobia have nitrogen-fixing ability, applying additional farmyard manure and phosphorus and potassium fertilizers has a clear yield-increasing effect. Farmyard manure can be applied all at once before sowing, then plowed into the soil. If there is not enough time to apply base fertilizer, then during the early growth stage, that is, at branching and early flowering, a certain amount of nitrogen and phosphorus fertilizer should be applied to enhance...
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Key Technical Points and Fertilization Methods for Topdressing Summer Peanuts
Fertilization should follow the "two topdressings, one spray, four supplements" approach. Specifically: the two topdressings are, first, early topdressing before the peanut plants form a full cluster, with 10 kg urea, 15 kg diammonium phosphate and 10 kg potassium chloride; the second topdressing is at the early stage of young pod swelling, generally 10 kg urea per mu. The one spray is in the late growth stage, per mu...
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Control Methods and Technical Key Points for the Cabbage Moth
The cabbage moth, also known as the cabbage cutworm and vegetable armyworm, has the Latin scientific name Mamestra brassicae Linnaeus and belongs to the order Lepidoptera, family Noctuidae. The cabbage moth has an extremely diverse diet, with known hosts reaching over 100 species across 45 families. Among vegetables, its main hosts include cabbage, cauliflower, Chinese cabbage, radish, rapeseed, solanaceous and fruiting vegetables, legumes,...
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