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What are the control methods for soybean frogeye leaf spot?
Frogeye leaf spot occurs commonly in all soybean-producing regions in our country, but it is most severe in the Northeast production region. All parts of the plant can be affected, and affected soybean seeds become smaller with reduced oil content. Main symptoms: after the plant and some pods are infected, lesions form on all of them, and lesions on mature plant leaves are round
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How to prevent and control soybean gray leaf spot? Understand the control methods in one article
Soybean gray leaf spot is a commonly occurring disease. In severe cases, it causes leaves to die off, leading to defoliation and reducing yield. 1) Symptoms: Gray leaf spot can occur throughout the entire growth period of soybean. It mainly damages soybean leaves. The lesions are round to elliptical or irregular in shape, with a diameter
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How to control soybean leaf rollers in soybean cultivation
The soybean leaf roller is a major pest in soybean production in summer and autumn. Besides damaging soybeans, it also harms leguminous plants such as mung beans and peanuts. In recent years, as winter temperatures have risen, its overwintering population has increased, and its occurrence in soybean fields has worsened year by year. Currently it is the
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Control methods for soybean mosaic virus in soybean cultivation
1) Select disease-resistant varieties: Different soybean varieties have different resistance to soybean mosaic virus, so selecting disease-resistant varieties suited to the local area is the most effective measure for controlling soybean mosaic virus. Disease-resistant varieties include Qihuang No. 22, Ludou No. 4, Ludou No. 1, Ludou No. 7, Ludou No. 6,
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How to prevent and control peanut leaf spot? These methods are very practical
1. Symptoms Peanut leaf spot disease mainly consists of black spot and brown spot, and both diseases mainly harm the leaves. When peanuts are affected, symptoms first appear on the lower leaves, then gradually spread to the upper leaves. In the early stage of the disease, small brown spots appear, which gradually develop into round
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Detailed Explanation of Cultivation Methods and Technical Points for Leaf Goji
1 Soil adaptability. Goji has strong adaptability to soil and can grow in arid, sandy wasteland, and saline-alkaline soils, but it grows best in slightly alkaline soil that is deep, loose, fertile, and well-drained. 2 Propagation methods. Goji is relatively easy to propagate, and sowing,
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What are the control methods for pepper seedling leaf curl disease?
When peppers are grown as seedlings in winter and spring, after transplanting (dividing seedlings) leaf curl, arrested growth and even death often occur. I. Causes and symptoms (1) Physiological disease: long-term low temperature and high humidity in the seedbed cause poor plant development, yellowing of stems and leaves, curling and shrinking of the terminal leaves, and stunted growth; in severe cases the roots are waterlogged and rot, the roots turn rusty in color and then decay.
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Key Technical Points for Cultivating Leafy Goji (Vegetable Goji)
Goji (Lycium) is a perennial small shrub of the genus Lycium in the nightshade family (Solanaceae), distributed throughout the country. The plant is light-loving, cold- and heat-tolerant, drought-tolerant and intolerant of wet conditions. Its suitable growing temperature is 15-20°C; growth is slow at 10°C, and poor above 25°C. At present, in northern regions of China such as Ningxia
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How to prevent and control gray leaf spot when growing Isatis indigotica
Symptoms: On both sides of the leaves of affected Isatis indigotica, round lesions form, 2-6 cm in diameter, slightly sunken, grayish-white in the center, with brown edges. In the later stage, the lesions become thin and brittle, crack or perforate; when moist, a brown mold-like growth appears on them, which consists of the pathogen's conidiophores and conidia. Old
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What are the control methods for grape leaf blight?
Symptoms: Brown spot disease is caused by infection with the fungus Pseudocercospora vitis, and mainly damages grape leaves. In the early stage of infection, the infection sites appear as light brown, irregular angular spots. The lesions gradually expand, reaching a diameter of up to 1 cm. The lesions change from light brown to brown, and then to reddish brown, with a
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