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Key Pest and Disease Control Methods and Techniques for Chestnut
1. Select good varieties and prepare enough scion wood. Select good varieties. For the improvement of chestnut orchards, the three new varieties Dahongpao, Qingmaozao and Hongmaozao should be selected. These new varieties have been trial-planted in our city and have the characteristics of early fruiting, high quality, high yield, large fruit and strong stress resistance, and are suitable for promotion and planting throughout the city. Scion collection and storage...
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What to Do When Water Spinach Gets White Rust? A Detailed Guide to Prevention and Control Methods
First, implement a 2-to-3-year crop rotation with other vegetable varieties. Second, before sowing, dress the seeds for sterilization at a ratio of 300 g of 35% metalaxyl per 100 kg of seeds; third, in the early stage of the disease, spray with 50% copper metalaxyl wettable powder at 6000 to 7000 times dilution, or with 72.2% propamocarb aqueous solution at 8000 times dilution, applying once every 7 to 10 days...
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What are the control methods for damping-off in water spinach?
Symptoms After the seeds germinate, infection before emergence mostly causes seed rot; after emergence, infection appears near the soil surface as water-soaked areas that soften and develop basal rot. The diseased part constricts, rapidly spreads around the stem, the seedlings topple, and the whole plant quickly dies, causing patches of dead seedlings. Disease conditions The optimum growth temperature is 15-16°C, and the optimum soil temperature for disease development is...
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What are the control methods for peanut root rot?
There are broadly two causes of peanut root rot: one is waterlogging, and the other is root rot disease. Control should begin with draining away the standing water and keeping the ditches clear. Before sowing peanuts, treat the seed with a 10% Shileshi seed coating, and after the disease appears, drench the roots with a 1000-fold dilution of Lüheng No. 1 or No. 2; foliar spraying is ineffective. Practise crop rotation: in lightly affected fields, rotate every other year, and in severely affected fields, rotate for 3 to 5 years. Deep ploughing to improve the soil, applying more organic fertiliser, and rational irrigation and drainage will strengthen disease resistance.
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Chestnut Pest and Disease Prevention and Control Methods and Technical Key Points
In Anhui Province, chestnuts are mainly distributed in the mountainous areas of southeastern and western Anhui. Since the 1990s, they have also been developed on a large scale in the Jianghuai hilly region. The main chestnut-producing counties (cities) include Jinzhai, Huoshan, Shucheng, Yuexi, Guangde, Ningguo, Taihu, and others. There are about 150 species of pests and diseases harming chestnuts in our province, with common and severe occurrences affecting chestnuts...
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Symptom Identification and Control Methods of Brown Spot Disease in Water Spinach
Symptoms initially appear as small yellowish-brown spots, which later expand into circular to oval, or irregular dark brown lesions, 4-8 mm in diameter, with distinct edges. In severe cases, the lesions merge with each other, and the diseased leaves turn yellow, wither and die. Disease conditions: It is prone to occur in rainy and humid weather or during off-season cultivation. Control methods...
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What to do when water spinach gets white rust? Detailed control methods
①Use disease-free seeds or treat seeds with 0.3% of seed weight of ridomil-mancozeb seed dressing. ②This disease is limited to infecting Convolvulaceae vegetables; after 2~3 years of crop rotation, the control effect is good. ③Pay attention to field drainage and thin out plants for ventilation. ④At the early stage of the disease, spray 48% metalaxyl-mancozeb wettable powder, 40% metalaxyl-copper wettable powder...
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Detailed Explanation of Pest Control Methods During Peanut Growth
I. Causes of Iron Deficiency in Peanuts Peanut is one of the crops relatively sensitive to the iron element. Although iron is not a component of chlorophyll, it is an indispensable condition for chlorophyll synthesis, a constituent of the cytochrome oxidase and peroxidase related to respiration, and participates in the oxidation-reduction processes within the plant. Due...
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Control Methods and Technical Key Points for Peanut Web Blotch
Peanut web blotch, also known as brown stripe disease and cloud-pattern blotch disease, often occurs mixed with leaf spot disease, and can cause early defoliation of peanut leaves, severely affecting peanut yield. I. Disease occurrence pattern The disease mostly begins during the flowering stage, with the peak period from pod setting to maturity, mainly damaging leaves, initially producing circular or irregular...
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How to prevent and control peanut southern blight? Detailed practical methods
Peanut southern blight generally begins to occur in large numbers in early to mid-June. Comprehensive control measures are as follows: for lower-lying fields, dig good ditches to help drain standing water and lower the water table; sloping peanut fields should also have good ditches so that water does not accumulate after rain. Apply more calcium and potassium fertilizer. After the initial flowering stage, in combination with building up soil and hilling the beds, apply 40-5...
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