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What are the control methods for the three major rice diseases?
How do you control the three major rice diseases? Please explain the control methods. The three major rice diseases can be controlled by referring to the following methods: 1. Rice blast (1) Leaf blast: dark green, nearly round or oval lesions, which later become slightly pointed at both ends; generally, when acute-type lesions appear or an infection center develops, especially in rice fields with high nitrogen fertilizer rates and tender, lush green growth, when the total number of leaf blast lesions occurring on 20 hills of rice during the entire growth period before heading reaches more than 400, spraying must be carried out, with an interval of 3 to 5 days, and continuous spraying 2 times.
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What are the common root diseases of tea plants?
What diseases affect tea roots? Please advise: tea roots are affected by the following diseases: 1. Tea seedling white silk blight 1.1 Distribution and symptoms: Tea seedling white silk blight is a common root disease in nurseries. It has a wide distribution range and causes serious damage. Besides tea, it can also harm more than 200 kinds of plants including cucurbits, Solanaceae crops, fiber crops, tobacco, and peanuts...
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Common Summer Eggplant Pests and Diseases and Their Control Methods
Which pests and diseases need to be controlled in summer eggplant? The following are several pests and diseases that need to be controlled in summer eggplant for reference: I. Control of eggplant insect pests 1. Red spider mite: For agricultural control, keep the soil moist regularly, avoid excessive drought, remove weeds and fallen leaves in time, and reduce sources of the pest. For chemical control, strengthen...
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Garlic Cultivation Techniques: What Are the Common Diseases?
What diseases affect garlic? Here is an introduction. Garlic diseases can be illustrated by the following examples: 1. Types of garlic diseases. 1. Round leaf (also called barrel): This disease mainly appears during the period before the garlic scape emerges. The leaves at the top of the garlic form a barrel shape that tightly wraps the garlic scape inside the barrel, causing the scape to become enclosed or broken. ...
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How to control weeds, pests and diseases during summer corn cultivation?
How to control weeds, pests and diseases when planting summer corn? Please explain: after sowing summer corn and before emergence, it is susceptible to damage from underground pests such as cutworms; at the seedling stage it faces damage from small brown planthoppers, Athetis lepigone, wireworms, thrips, aphids, etc.; at the grain-filling stage, major diseases such as stalk rot (green wilt), ear rot, leaf spot diseases and southern rust occur locally, and major pests such as corn borers and aphids cause severe damage; there may also be harmful organisms that cause corn lodging and stalk breakage, affecting corn yield and mechanized operations.
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What are the tea plant pests and diseases? Detailed explanation of common types
What should be noted during tea cultivation? Please refer to the following tea cultivation methods for your reference: 1. Field management of nurseries and young tea plantations: promptly clear away stones and other debris from nursery plots and young tea plantations, drain standing water, straighten tea seedlings, and use pruning shears to cut off the injured parts of damaged young tea seedlings; count as soon as possible...
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What diseases affect grapes in summer? Detailed planting techniques
What diseases affect grapes in summer? Please introduce them and explain the control methods. In summer, grape growing requires special attention to disease control, especially the control of black pox, white rot, anthracnose, and downy mildew. Focus on prevention, and spray promptly. For medicines with a residual effectiveness period of 17-21 days, generally spray once every 15 days...
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What are the common pests and diseases of pear trees? Targeted medication and control methods
What are the common pests and diseases of pear trees? What pesticides should be used to control them effectively? Please introduce the following common pests and diseases of pear trees and their control methods (for reference): Pear ring rot and pear branch and trunk rot: apply medication 10 days after the pear tree finishes flowering. For pear ring rot, you can choose 21% Guofukang 800-1000 times solution or 68.5% DuPont Yibao 80...
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Forecast on the Occurrence and Control of Pests and Diseases in Honeysuckle
I. Current Occurrence of Pests and Diseases in Honeysuckle According to a systematic survey conducted by our station on May 29: no honeysuckle aphids were found in the survey. For red spider mites, the average rate of infested plants was 53.3%, with a maximum of 60.0%; the average rate of infested leaves was 15.7%, with a maximum of 31.3%; the average number of mites per 100 leaves was 31.3, with a maximum of 38.0; the average mite infestation index was 4.08, with a maximum...
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Ginger Cultivation Techniques: What Diseases of Large Ginger Need to Be Prevented and Controlled?
What diseases of large ginger need to be prevented and controlled? Please give an introduction. The following introduces several common diseases of large ginger and their prevention and control methods: Ginger blast: mainly spread by irrigation water and underground pests, and can occur from the sprouting and emergence of seed ginger to before the harvesting of ginger. This disease mostly occurs in high-temperature, frequently rainy, and waterlogged fields. Prevention and control: ginger...
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