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What are the common pests and diseases of pineapple? A detailed guide to prevention and control methods
What pests and diseases of pineapple need to be prevented? Please introduce the following pests and diseases that need to be controlled during pineapple cultivation: wilt disease. After the plant is affected, the leaves become soft and droop, the leaf color changes from pale green to red, the base rots, and finally the whole plant dies. This disease is caused by damage from mealybugs. Prevention and control methods: first, strictly take care not to use diseased seedlings for propagation.
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What is soybean frogeye leaf spot? A detailed guide to prevention and control methods
What is soybean frogeye leaf spot and how do you prevent and control it? Looking for guidance. Soybean frogeye leaf spot: (1) Damage and symptoms. Soybean frogeye leaf spot, also known as brown spot, leaf spot or frog-eye disease, is a worldwide disease and an important disease in China's main soybean-producing regions, especially severe in the three northeastern provinces. The pathogen is in eastern Heilongjiang...
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Common Pests and Diseases in Pear Tree Cultivation and Their Control Methods
What pests and diseases should be prevented in pear tree cultivation? Here is an introduction to the main pests and diseases in pear tree cultivation: For diseases, generally spray fungicide 7 days after flowering, then spray again at an interval of 15 days. After June, on sunny days, spray the protective agent 1:3:240 Bordeaux mixture 3 to 4 times, at intervals of 15 to 20 days. During the rainy season, fungicides can be sprayed on the trees. ① Black spot disease: 75% carbendazim at 800 times dilution.
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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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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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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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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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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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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 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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