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How to prevent and control asparagus pests and diseases? A detailed explanation of practical technical points
Asparagus stem blight and brown spot are the main diseases harming asparagus, developing quickly and causing severe damage. At present, there is no specific cure. Practice has proven that adopting a comprehensive disease prevention strategy based mainly on agronomic measures, supplemented by chemical control, can achieve twice the result with half the effort. The specific methods are: 1. Pinch off the growing tips at the right time to prevent lodging. As...
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How to prevent and control bacterial brown stripe disease of rice?
Control of bacterial brown stripe disease of rice: 20% Yekuning (Chuanhua 018) wettable powder at 6000 times dilution; 25% Dikushuang at 1500 to 2000 times dilution; 20% Shakujing (Yekujing) wettable powder at 300 to 400 times dilution (not to be used after heading); during the seedling stage, Daisenzam at 1000 to 1500 times dilution may be used; during the main field stage, use 2 to 1 to 500...
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How to prevent and control rice Phytophthora disease? Detailed explanation of control methods
Rice Phytophthora disease: Diseased fields should be drained and dried in time, which can effectively inhibit the spread of the disease. Chemical control should focus on protecting early rice seedlings at the 3-leaf stage. Generally, pesticides should be applied before cold-protection irrigation or after drainage. The pesticides include: 50% carbendazim 1000-fold solution; 50% thiophanate or 50% benomyl 500-fold solution; 40% Phytophthora-killing 500-fold solution....
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Opinions on the Prevention and Control of Diseases, Insects and Weeds during the Sowing and Seedling Stages of Wheat
Seed dressing of wheat can prevent soil-borne and seed-borne diseases such as take-all, root rot, sheath blight and loose smut, as well as some insect pests. When dressing seed, note the following: 1. The type of pesticide should be determined according to the occurrence of diseases and insect pests. If insect pests occur only slightly during the wheat seedling stage while diseases occur relatively severely, dressing seed with a fungicide alone is sufficient, and there is no need to use an insecticide...
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Detailed Explanation of the Causes of Mass Asparagus Death and Prevention and Control Methods
The causes of asparagus plant death are as follows: 1. Asparagus likes light. In September-October 2007, just when the aboveground parts of asparagus were growing vigorously and accumulating nutrients to lay the foundation for a high yield the following year, there was an unexpected continuous rainy period the likes of which had not been seen for many years. Light was severely insufficient, causing asparagus growth to stagnate, nutrient accumulation to decrease, and stress resistance to...
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How to prevent wheat frost damage? Save these clever tips
What does wheat rust look like? Wheat rust is also called jaundice. It is divided into 3 types: stripe rust, leaf rust, and stem rust. It is the most widespread and most damaging type of disease on wheat. After wheat is infected with rust, faded green spots first appear on the surface of wheat leaves or stems, and later yellow or reddish-brown powdery pustules grow, namely the pathogen's uredinia...
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A Detailed Guide to Preventing and Treating Small Fruit and Fruit Cracking in Melons
As temperatures rise, melons grow rapidly, and the critical period for field management has arrived. Recently, some farmers have reported that small fruit and fruit cracking occur during melon growth. How should these problems be solved? To prevent small fruit, strengthen fertilizer and water management in the early stage to promote vegetative growth. According to variety characteristics and cultivation...
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Detailed Explanation of Key Techniques for Corn Smut Prevention and Control
Corn smut, called "grey packet" by farmers. It can occur at all growth stages of corn, damaging the tassel, ear, as well as stems and leaves. Symptom identification: symptoms gradually become obvious around tasseling. Tumors of varying sizes grow on the affected parts; the tumors are initially white or reddish-purple, later turning grey, and after rupturing they release black powder. Affected...
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How to prevent and control corn gray leaf spot? A full analysis of the technical key points
Corn gray leaf spot can occur throughout the entire growth period, but the disease is most severe at the tasseling and grain-filling stages. In the early stage of the disease, water-soaked light brown spots appear. These streaks extend parallel to the leaf veins, are often rectangular, and are more obvious when held up to the light. The center of the lesion is gray, and the edge has a brown line. The lesion size is 2-4 x 10-24 (mm), and...
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How to prevent and control soybean downy mildew? Detailed explanation of control methods
[Distribution and damage] It occurs in all major soybean-producing areas across the country, and is especially common in the cold-temperate Northeast and North China regions. This disease is caused by infection with the fungus Peronospora manshurica (Naum.) Jyd. et Gaum. It generally reduces yield by 6%-15%, with about 10% of seeds damaged. In addition to harming large...
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