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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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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 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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What are the control methods for peanut stem rot?
How to control peanut stem rot? (1) Keep good seed: choose summer peanuts for seed saving. Choose a sunny day to harvest early, sun-dry, and store in a dry place; before sowing, select healthy, large seeds. (2) Seed disinfection: 50% carbendazim wettable powder at 0.3% of the seed rate, 25% carbendazim wettable powder at 0.5% of the seed rate, mix with 5-10 times fine dry soil, and mix in layers onto peanut seeds soaked for 12 hours, or add 30 kg of water, soak 50 kg of seeds for 24 hours, stirring 2-3 times in between.
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How to prevent and control peanut bacterial wilt? These methods you need to master
How to prevent and control peanut bacterial wilt? (1) Crop rotation: rotating between flooded and dry land for 1-2 years shows obvious results. On dry land, rotate with cereal crops; for lightly infected land 1-3 years, for heavily infected land 4-5 years. (2) Select disease-resistant varieties: currently promoted resistant varieties include Xiekangqing, Ehua No. 5, Zhonghua No. 2, You 92, Guiyou 28...
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What to Do About Fruit Cracking in Pear Trees? Cause Analysis and Control Methods
What should be done about fruit cracking in pear trees? Please give guidance. Causes of fruit cracking in pear trees: First, excessive fruit growth, imbalanced soil moisture supply, and uneven fruit growth; second, no potassium fertilizer applied or insufficient potassium fertilizer causing fruit cracking; third, pear scab can also severely cause cracking. To control fruit cracking in pear trees, it should be done from May to July...
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What to Do About Spindly Greenhouse Tomatoes? Detailed Prevention and Control Methods
What to do about spindly greenhouse tomatoes? Please advise. The main causes of spindly or stunted seedlings in greenhouse tomato cultivation are insufficient light, excessively high temperatures and excessive moisture. Once seedlings become spindly or stunted, the harm is considerable. Spindly seedlings differentiate flower buds late, drop many flowers, have a low survival rate, and suffer major yield reductions, while early maturity cannot be achieved...
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How to prevent and control green-shoulder in tomatoes? These methods you need to know
What methods can prevent green-shoulder in tomatoes? Please advise. The green-shoulder fruit of tomato is a type of rib rot. There are many causes of green-shoulder fruit in tomatoes, the most important of which is unbalanced fertilization, caused by high nitrogen and low potassium. Excessive application of nitrogen fertilizer with relatively insufficient potassium is the main cause of green-shoulder fruit in tomatoes....
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Comprehensive Control Methods for Peanut Wilt Disease in Early Spring Plastic Mulch Cultivation
Peanut wilt disease includes stem rot, root rot, southern blight, stalk rot and several other diseases, and it severely affects early spring plastic mulch peanut production. 1. Disease characteristics. Their common feature is that the peanut stem or leaf wilts and the affected part becomes discolored and necrotic. Generally, continuous cropping plots and plots with poor soil are more severely affected; rotation plots and plots with high fertility...
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What are the control methods for core browning in Ya pears?
How to control core browning in Ya pears? Please give guidance. Core browning is a physiological disorder that occurs during the storage of Ya pears. Ya pears can develop the disease after being stored in a 0°C cold-air warehouse for 30-50 days. In the early stage of the disease, brown patches can be found on the outer skin of the core, gradually spreading to the entire core; in severe cases, the flesh also develops brown discoloration with indistinct boundaries...
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