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How to prevent and control watermelon seedling diseases? A detailed guide to integrated control techniques
I. Symptoms of the main diseases 1. Damping-off. In the early stage, the root collar of the seedling (the junction of root and stem) develops lesions that look as if scalded by boiling water and become rotten, after which the diseased part turns yellowish-brown, dries out and shrinks; the cotyledons have not yet wilted, but the seedling topples over. Damping-off mostly occurs from the emergence of the cotyledons to the stage when 2 true leaves have flattened out. The disease spreads very quickly; a few days after the appearance of the first diseased plants, seedlings topple over in patches. Under conditions of high temperature and high humidity, the diseased parts of the seedlings and the ground nearby,
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Key Technical Points for Green Prevention and Control of Garlic Pests and Diseases
Green prevention and control of crops means using agricultural control, physical control, biological control, precision pesticide application and other techniques during agricultural production to control pests and diseases, with the aim of reducing pesticide use, lowering pesticide residues in agricultural products, and comprehensively improving the quality and safety level of agricultural products. This year, the garlic planting area in our town...
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Key Cultivation and Control Techniques for Major Watermelon Pests and Diseases
Yu Yongjun, a villager from Group 3 of Yuwanggang Village, Qifang Town, Zaoyang City, Hubei Province, once hailed as the "Watermelon King," has through years of practice worked out a good method for making watermelons sweeter, now offered to fellow growers for reference. 1. About 1 week after fruit set, dig a hole 10 cm from the main root, apply 50 g of cake fertilizer per plant, cover with soil and water. This method can make...
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A Detailed Guide to the Main Diseases of Chinese Bayberry (Yangmei) and Their Control Methods
I. Chinese Bayberry Crown Gall Disease 1. Symptoms: Chinese bayberry crown gall disease is a bacterial disease. It mainly affects the branches and trunks of 2-3 year old fruiting trees, mostly forming tumors on the branches and trunks. The tumors are nearly spherical, vary in size, are very hard and corky, and range in color from brown to dark brown. Generally, the tumors on the branches and trunks begin to enlarge in early April, and from July to August...
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What are the common pests and diseases of Chinese bayberry (Myrica rubra)? These several will affect tree vigor
Pests and diseases such as canker, brown spot, leaf roller, and pine caterpillar have a huge impact on the vigor and yield of Chinese bayberry trees. In production, prevention should be the main approach, with integrated control. In addition to measures such as increasing the application of organic fertilizer and potassium fertilizer and doing a good job of winter orchard cleaning, during the growing season effective measures should be taken promptly according to the occurrence patterns of pests and diseases to...
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Methods for Controlling Pests and Diseases of Lychee and Longan in Autumn and Winter
I. Pest species during the autumn shoot stage and their control. Autumn shoots are next year's fruiting branches; if they are eaten bare by pests, it will seriously affect next year's flower bud formation. The main pests of autumn shoots are leaf-eating types, including various geometrid moths and various leaf-rolling insects. Among them, the eriophyid mite (felt disease) and the longan psyllid, etc., cause the most serious damage from September to November each year...
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Act quickly to prevent and control diseases in eggplant, melon and bitter gourd
New leaves become smaller, narrow and elongated, shrunken, hardened and distorted; diseased plants are obviously stunted and find it hard to set fruit; even if fruit is set, it is deformed and hardened with a mottled surface.%26rdquo; Recently, a farmer brought a diseased bitter gourd vine and anxiously went to the municipal plant protection station for consultation and told this author about it, asking what disease it was and seeking a solution...
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How to prevent and control diseases of yardlong beans? A detailed guide to practical methods
I. Main symptoms The yardlong bean can be infected by pathogens throughout its entire growing season, but its resistance weakens and susceptibility increases from the beginning of flowering to the fruiting period. The disease mainly attacks the leaves; in the early stage of the disease, chlorotic yellow-white spots appear on the leaves, and the spots gradually increase until they densely cover the entire leaf. The plant is short and stunted, with few and small pods, and its growth...
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How to identify and control common diseases and pests of winter melon?
Spring-planted winter melon is rich in nutrients; every 100 grams of fresh melon contains 96.6 grams of water, 0.4 grams of protein, 19 mg of calcium, 12 mg of phosphorus, 18 mg of vitamin C and other nutrients. In recent years, demand for winter melon has been increasing in various places. Spring-planted winter melon has high yields, and some varieties can reach up to 10,000 kg, after...
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What are the control methods for winter melon pests and diseases?
Fusarium wilt is the most serious disease affecting autumn-planted winter melon. It strikes when the plant begins to flower and set fruit, causing the vines to wither and die. This disease is a fungal disease, and when it occurs severely, it spreads aggressively and rapidly, affecting entire patches and killing whole plants, resulting in heavy losses. Close attention must be paid to its control in order to protect the stems and vines and promote flowering and fruit set....
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