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Control Techniques for Lettuce Brown Spot and Black Spot
Lettuce brown spot and black spot mainly damage the leaves. Brown spot leaf spots show two types of symptoms: one initially appears water-soaked, then gradually expands into circular or irregular brown to dark gray lesions, 2-10 mm in diameter. The other is dark brown lesions with irregular edges and a water-soaked halo around the perimeter. On damp...
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Symptom Identification and Control Techniques for Lettuce Gray Mold
A reader from Jiangsu asks: what are the symptoms and control methods of lettuce gray mold? Answer: Lettuce gray mold mainly damages leaves and stems, and infection can occur from the seedling stage to the mature plant stage. Infection at the seedling stage. Leaves and young stems show water-soaked rot, with gray mold growing on the diseased parts. Leaf infection. It starts from the mature leaves near the ground...
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How to control sugarcane pests? New pest control methods are here
1. Reasonably select the plot and good varieties of sugarcane and melon. That is, choose deep soil with good drainage and fertile land for intercropping. For sugarcane, choose varieties that are medium-maturing, high-yielding, high-sugar, and have a high rate of stalk formation; for watermelon, choose varieties that are early-maturing, of good quality, and have a high fruit-setting rate on the first female flowers. 2. Raise seedlings and transplant at the right time. Sugarcane is suitable in early March...
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What are the control measures for sugarcane stem borers?
Sugarcane stem borers are mainly the sugarcane spotted borer and the giant borer. These two borers have 3-4 generations a year. The 1st generation generally occurs from early to mid-May to early to mid-June, and the 2nd-3rd generations occur from late June to September. Sugarcane is damaged by these two borers from the seedling stage until before harvest, among which the 1st-2nd generations cause relatively...
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What are the common diseases of oilseed rape? Detailed explanation of control methods
Common diseases of oilseed rape and their control
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Control methods for common pests and diseases of wheat in spring
Spring is a critical period for wheat growth and also a time when diseases and insect pests occur frequently. Therefore, spring management of wheat should pay attention to the prevention and control of pests and diseases. Below are several common wheat pests and diseases in spring and their control methods: Wheat rust and powdery mildew: in areas where the disease is severe and obvious disease centers have formed, spray pesticide promptly,...
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How to carry out pollution-free control of aphids on cauliflower-type vegetables
Viral disease is the main disease of broccoli, occurring commonly and severely. The disease patterns and control methods are described below: 1. Disease patterns: In areas where cruciferous vegetables are not planted in winter, the virus overwinters on stored Chinese cabbage, cabbage, radish, or overwintering spinach; where cruciferous vegetables are planted in winter,...
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What to Do When Broccoli Gets a Viral Disease? Disease Patterns and Key Control Points
Viral disease is a major disease of broccoli, occurring commonly and severely. The disease patterns and control methods of this disease are described below: 1. Disease patterns In areas where cruciferous vegetables are not grown in winter, the virus overwinters on stored Chinese cabbage, cabbage, radish or overwintering spinach; when cruciferous vegetables are grown in winter, ...
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Key Techniques for Winter and Spring Control of Wheat Red Spider Mites
Seven parts planting, three parts management: improving sowing quality is the key to a grain harvest. At present, spring wheat in our province is about to enter the sowing period. How well the sowing stage is handled and sowing quality improved has a bearing on the overall success of the spring wheat harvest for the whole year. 1. Selecting improved varieties. To achieve a bumper wheat harvest, soil is the foundation, fertilizer is the nutrition, and water is the lifeblood, ...
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Integrated Control Measures for Gummy Stem Blight of Hami Melon in Rainy Regions
I. Bacterial Leaf Spot Symptoms: In the early stage, water-soaked lesions appear near the veins on the underside of leaves; the lesions expand rapidly and merge into one another, with a yellow halo at the edges. Control method: In the early stage of the disease, spray the foliage 2-3 times with 77% Duoning at 500 times dilution or 3% zhongshengmycin at 800 times dilution, once every 4-5 days. II. Gummy Stem Blight Symptoms...
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