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What are the control methods for peanut violet root rot?
How does peanut leaf spot occur? Both peanut black spot and brown spot are diseases caused by fungi. The sexual stage of the peanut black spot pathogen is Berkeley's Mycosphaerella; the stroma is hemispherical, brown to black, embedded beneath the host epidermis, with conidiophores densely clustered on the stroma; conidia are borne terminally, the conidia are olive...
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Causes and Control Methods of Peanut Sheath Blight
How does peanut sheath blight occur? How to control it? (1) Disease pattern: Peanut sheath blight is a disease caused by a basidiomycete fungus. Young hyphae are colorless, turning yellow-brown when mature; they are branched, with a distinct constriction at the branch point and a septum not far from the branch. Hyphae on the surface of diseased tissue can form sclerotia, which have a rough surface...
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What are the control methods for chrysanthemum Fusarium wilt?
Fusarium wilt is one of the important diseases of chrysanthemums. It occurs in many regions of China. Although the incidence of this disease is not high, it is extremely harmful. Once a plant is infected, if control measures are not taken promptly, the plant will quickly wither and die. Chrysanthemum Fusarium wilt is a fungal disease. The pathogen is Fusarium oxysporum f. sp. chrysanthemi, which is a...
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Disease Prevention and Control Methods for Fresh-Cut Lilies
I. Lily Phytophthora Blight 1. Symptoms: Stems, leaves, flowers and scales can all be affected, mainly the tender leaves of the flowers. When the leaves are affected, small water-soaked spots appear, which gradually enlarge and turn grayish-green. When the stem is affected, the water-soaked discolored part spreads upward and downward and rots, further developing into bending and drooping of the stem. In severe cases, the flower stalk and...
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What are the symptoms and control methods of calcium deficiency in peanuts?
Symptoms: When peanuts are deficient in iron, the young leaves at the top show chlorosis, while the older leaves at the bottom and the leaf veins remain green; in cases of severe iron deficiency, the leaf veins lose their green color and then turn yellow, all the new upper leaves turn completely white, brown necrotic spots appear, and they dry up and drop off. For control methods, a 0.1%-0.2% ferrous sulfate solution can be used for foliar spraying...
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Causes and Control Methods of Peanut Witches' Broom Disease
What causes peanut witches' broom disease? How to prevent and control it? (1) Disease pattern: Peanut witches' broom disease may be caused by a mycoplasma-like organism or a complex infection of mycoplasma-like organisms and viruses. Neither seeds nor soil transmit the disease, but grafting can transmit it. Whether other insects and sap can transmit the virus is still under study. The occurrence of peanut witches' broom disease...
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How to prevent green-shouldered tomatoes? Practical control methods
How to properly control tomato bacterial wilt? Please note that the following points should be handled well in the control of tomato bacterial wilt: 1. Select and breed disease-resistant, tolerant, high-yield varieties according to local conditions, and rotate to new varieties; 2. Implement crop rotation in severely affected areas and severely affected fields, preferably paddy-upland rotation with rice; 3. Strengthen fertilizer and water management. Improve drainage and irrigation systems, plant on high ridges with deep furrows...
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What are the control methods for tomato fruit rot?
How should tomato fruit rot be controlled? Please advise. During production, tomatoes suffer from various fruit rot diseases. There are many causes of fruit rot, and different control methods should be adopted according to different situations. Fruit rot caused by soft rot. This disease generally occurs on green fruit; after onset, the skin remains intact...
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Major Pests and Diseases of Lilies and Their Control Methods
After sowing, lilies must undergo several years of cultivation and management before commercial bulbs suitable for harvest can be obtained. Generally, asexual propagation is used first to obtain seed bulbs, or seed propagation may be used first to obtain seed bulbs; the seed bulbs are then planted in the field and, through field management, grow into commercial lilies. Seed bulbs are various propagation materials first cultivated into 50-100 g small...
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Common pest and disease control methods in lily cultivation
Lily blight, also known as lily foot rot, is distributed in Hebei, Gansu, Shaanxi, Shandong, Zhejiang, Jiangxi, Henan, Hubei, Hunan, Sichuan, Guizhou, Yunnan, Tibet and other provinces and regions. 1. Damage symptoms: It mainly attacks stems, leaves, flowers, scales and bulbs. When the stem is infected, water-soaked brown rot appears at first, gradually...
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