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Control Methods and Key Technical Points for the Mango Stem Borer
The mango stem borer belongs to the order Coleoptera, family Cerambycidae, and occurs in mango-producing areas throughout southern China. Its larvae bore into and feed on branches and trunks, weakening the affected plants; in severe cases, the plants can die, and infested branches are easily broken by wind. The pest has 1 generation per year, overwintering mainly as larvae, while a small number of pupae or adults can also overwinter inside the bore holes. The following year...
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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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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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What to Do About Split Melons? A Full Guide to Prevention and Control Methods
1. Scientific fertilization. According to the fertilizer and water requirements of melons during their growth period, supply fertilizer and water in a balanced way, and do not blindly water and fertilize. When fertilizing, not only should sufficient base fertilizer be applied to meet the needs of the melon's early growth, but also timely topdressing should be done in the later stage of melon growth to meet the fertilizer requirements of the melon's later growth. 2. ...
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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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Control Methods for Major Diseases and Pests of Melons
Melon, also known as oriental melon, is one of the high-grade fruits that people love. It belongs to the Cucurbitaceae family, Cucumis genus, melon species, and is an annual herbaceous plant. I. Variety Types and Selection of Improved Varieties Melons are generally divided into two types: thin-skinned melons and thick-skinned melons. Thin-skinned melons, also known as Chinese melons, have thin skin, crisp flesh, and small fruits with a single fruit...
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What are the pollution-free soybean diseases and their control methods?
The soybean aphid is one of the major pests of soybean, with adults and nymphs piercing and sucking sap on the top leaves, tender leaves and tender stems of the soybean plant. In severe cases they cover the stems and leaves, and can also attack tender pods, causing stunted plants, reduced fruiting branches and pod numbers, and lower 1000-grain weight; when severe at the seedling stage, the entire plant can die, and in outbreak years if not controlled in time...
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Dodder Control Methods and Technical Key Points in Soybean
Dodder, also called yellow silk vine or tangling silk vine, is a malignant weed. It harms many crops and can cause total crop failure in soybean, and it occurs commonly in all regions. (1) Morphology: The stem of soybean dodder is yellow, orange-yellow or yellow-green, smooth and hairless, thread-like, and coils leftward around the host stem. The leaves are reduced to membranous scales. The flowers...
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