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How to prevent and control soybean black spot disease? Growers must read
Soybean black spot disease is a commonly occurring disease. The disease damages pods and stems, causing stems to wither and die, pods to fail to set seed, and in severe cases plants to die in patches. Seeds in diseased pods are small and shriveled, affecting yield and quality, and diseased seeds have reduced commercial value and oil extraction rate. 1)
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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 spring soybean virus disease? Detailed explanation of occurrence patterns and control methods
Viral disease is a major disease of spring soybean, causing about 15% yield loss in normal outbreak years and over 50% yield loss in severe outbreak years. 1 Symptoms After spring soybean is infected, the upper leaves first show light yellow-green mottling, and the mesophyll bulges in a blister-like manner along the veins; then the mottling and wrinkling become increasingly severe, the leaves become deformed, the mesophyll protrudes, the leaf margins curl downward, plant growth is clearly stunted, the number of pods decreases, the pods are small and slender, and the pods show deformed symptoms such as flattening and bending. After infected spring soybean matures, the seeds are clearly smaller, and light brown streaks can appear on the seeds.
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How to prevent and control soybean root rot? These methods you need to master
1. Select disease-resistant varieties. 2. Rotate with non-host crops such as corn, millet, and sweet potato. 3. When sowing, apply more farmyard manure, potassium fertilizer, phosphate fertilizer, etc. 4. When sowing, apply metalaxyl granules so that soybean roots can absorb them to prevent root infection. 5. Before sowing, use seed weight
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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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Key Management for Mid-to-Late Stage Wheat: Focus on the "One Spray, Three Preventions"
The mid-to-late growth stage of wheat is a critical period for yield formation and also a peak period for various pests and diseases. Doing a good job of field management during this period is crucial for ensuring a bumper wheat harvest. In recent years, the "one spray, three preventions" technique has been widely adopted in mid-to-late stage wheat management. It is
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Spring field management for winter wheat: remember these eight key points
Spring is the critical period that determines the number of spikes per mu, the number of grains per spike and grain weight in wheat. Strengthening spring field management according to seedling conditions is the key to achieving high wheat yields. In terms of management, the eight key points of pressing, raking, clearing, topdressing, watering, controlling, preventing and protecting should be implemented as priorities. Pressing: namely early
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For high wheat yields, spraying foliar fertilizer is key
After wheat flowering, it enters the critical period of yield formation. Spraying foliar fertilizer from flowering to the grain-filling stage can effectively increase yield and quality. I. Spraying methods 1. Spray multidimensional potassium dihydrogen phosphate. Use 100 grams of 99.5% multidimensional potassium dihydrogen phosphate per mu, mix with 30 kg of water and spray evenly, once every week, spraying 2 to 3 times in succession. This can increase grain number, increase grain weight, promote grain filling, improve wheat's disease resistance and lodging resistance, prevent late-stage dry hot winds, and promote early maturity.
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Common problems after sowing wheat and how to solve them
◇What to do if the wheat variety is chosen improperly? Sowing spring-type and weakly winter-type varieties on medium and early stubble fields will cause the wheat seedlings to grow excessively before winter, which is not conducive to safe overwintering. Countermeasures: On the basis of early hoeing and pressing, earth up around the roots before winter, or apply "mengtou manure" to protect the wheat seedlings for safe overwintering.
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Pay attention to preventing dry hot wind in the late growth stage of wheat
Dry hot wind is a frequently occurring meteorological disaster in the late growth stage of wheat. After being damaged, wheat can generally lose 5%-10% of its yield, and in severe individual cases it can reach more than 20%. The harm of dry hot wind to wheat is mainly due to high temperature, drought, and strong wind, which cause large amounts of water in the air and soil
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