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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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What are the control methods for soybean bud blight?
Wudalianchi City is one of the main soybean-producing areas in Heilongjiang Province and a major national commodity grain county. Soybean planting area accounts for more than 50% of the total sown area every year. Previously, soybean bud blight occurred only sporadically in the local area, and the large-scale outbreak in 1998 was unprecedented in recent years.
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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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How to prevent flower and pod drop in soybean cultivation
1. Topdressing according to local conditions and seedling condition. For fields where the plants cannot close the rows in time during the flowering period due to lack of fertilizer, topdress once more at the early flowering stage. Generally, apply 5 kg of urea or 10 kg of ammonium sulfate per mu, which can reduce flower and pod drop. 2. Foliar spraying. During the flowering and podding stage, generally use per mu
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Detailed Explanation of Key Points of Chemical Control Technology in Soybean Cultivation
Using chemical technology to control cultivation is an emerging technology in agricultural production. Applying chemical control cultivation to soybeans can regulate plant growth and development, help increase flowers and preserve pods, and raise yield. Application of rare earth: Rare earth is also called rare earth micro-fertilizer or rare earth nitrate, and its trade name is Changle Yizhisu.
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Detailed Explanation of Key Technical Points for Soybean Sowing
1. What key techniques should be mastered for soybean sowing? 1. Land selection. Soybean land should not be planted continuously, otherwise it is prone to pests and diseases. After the land is selected, it should be harrowed until broken up, achieving a soft plow layer and a level surface. 2. Seed selection. Varieties suitable for planting in Tiandong include: Beijing bean, Yishan Liula
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Key Management Techniques for Summer Soybean in the Mid-to-Late Growth Stage
Compared with corn and cotton, soybean requires less labor, less investment and lower cost during its growth period, which is a major advantage of the summer soybean crop, but for soybean to achieve high yield, mid-to-late stage management is the key. During the flowering and pod-setting stage, vegetative growth and reproductive growth proceed together, which is
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The pathogenesis and control methods of hyacinth bean brown spot disease
Hyacinth bean, Lablab purpureus (Linn.) Sweet, commonly known as bian dou, with aliases huolian biandou, tengdou, yanli dou, quedou, chadou, yueliang cai, belongs to the Dicotyledoneae class. There are also many varieties, such as: white hyacinth bean, purple hyacinth bean, oil bean, snake bean, pig's ear bean (shaped like a pig's ear). ⟦4 <p>Hyacinth bean, Lablab purpureus (Linn.) Sweet, commonly known as bian dou, with aliases huolian biandou, tengdou, yanli dou, quedou, chadou, yueliang cai, belongs to the Dicotyledoneae class. There are also many varieties, such as: white hyacinth bean, purple hyacinth bean, oil bean, snake bean, pig's ear bean (shaped like a pig's ear). It is a perennial, twining vine plant of the genus Lablab in the Fabaceae family. It is a type of legume plant.</p><p></p><p>The pathogenesis of hyacinth bean brown spot disease:</p><p>Hyacinth bean brown spot disease, also known as brown-edged white spot disease, mainly damages leaves. Nearly circular or irregular brown spots appear on the front and back of the leaves, with reddish-brown edges, 1 to 10 mm in diameter, and later the center of the lesion turns grayish-white to grayish-brown. Under high humidity, grayish-black mold-like growth appears on the lesions on the underside of the leaves. The pathogen overwinters in the soil as ascocarps with diseased residues. In the following year, primary infection is caused by ascospores produced by the overwintering pathogen, which spread by wind and rain, and ascospores produced in diseased areas spread by airflow. This disease is a high-temperature, high-humidity disease. Under high-temperature and rainy weather conditions, with a temperature of 20 to 25°C and relative humidity above 85%, it is prone to occur.</p><p>Control methods for hyacinth bean brown spot disease:</p><p>1. Agricultural measures: rotate with non-legume vegetables for 2 years. Plant at a reasonable density, apply more potassium fertilizer, clean the field, and collect and burn diseased residues.</p><p>2. Seed disinfection: pre-soak the seeds in cold water for 4 to 5 hours, then transfer to 50°C warm water for a brief soak of 5 minutes.</p><p>3. Chemical control: apply pesticide promptly at the early stage of the disease. You may choose 80% zineb wettable powder at 500 times dilution, or 45% amobam aqueous solution at 1000 times dilution, or 50% thiram wettable powder at 600 times dilution, or 25% metalaxyl wettable powder at 800 times dilution, or 20% benalaxyl emulsifiable concentrate at 350 times dilution, or 40% fosetyl-aluminum wettable powder at 200 times dilution, or 66.5% propamocarb aqueous solution at 800 times dilution, or 50% captan wettable powder at 450 times dilution, etc. for spraying. Spray once every 10 days, and carry out continuous control 2 to 3 times.</p>
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Detailed Explanation of High-Yield Lablab Bean Planting Techniques and Management Points
Lablab bean, Lablab purpureus (Linn.) Sweet, commonly known as hyacinth bean, also known as huolian lablab bean, vine bean, yanli bean, magpie bean, cha bean, moon vegetable, belongs to the Dicotyledoneae class. There are also many varieties, such as: white lablab bean, purple lablab bean, oil bean, snake bean, pig ear bean (shaped like a pig
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A Detailed Guide to Kidney Bean Cultivation Techniques, Easy for Beginners Too
Summary Seed selection: choose seeds that are large and plump, free of pests, diseases and damage. Land preparation: plow in advance to improve soil fertility and apply sufficient base fertilizer. Sowing: sow from late April to early May, with a sowing depth of 10-15cm. Close planting: follow the principle of sparse sowing in fertile land and dense planting in lean land, with a seeding rate per mu of generally 8-10kg. Management: thin and finalize seedlings, timely weed, earth up, level the ridges, insert poles, build trellises and pinch off the growing tips, and actively prevent pests and diseases. Harvesting: pick each batch as it matures.
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