Symptoms Before emergence of spring peanuts, bad seeds often occur, and the severity is as high as 10% to 20%, resulting in varying degrees of defoliation. Etiology One, poor seed quality or improper storage, or storage period is too long. Second, low-lying geothermal, soil viscosity, poor texture, high soil moisture content, long seed emergence time, soil preparation is not true, affecting seed moisture absorption, weak seedlings. Third, the seeds are not selected, the size is not uniform, the seeding is not fine or different shades, resulting in uneven emergence or lack of seedlings broken ridge. Fourth, many years of continuous cropping do not fall, serious seedling disease, resulting in lack of seedlings broken ridge. Fifth, the application of organic fertilizer is not fully cooked or fertilizer concentration is too high, resulting in long-term hypothermia caused by fertilizer damage or induced, causing germination and seedling slow and bad species.
Prevention and control methods (1) Fine selection of seeds, selection of new peanut seeds; harvesting of suitable peanuts for timely harvesting and timely drying, scientific storage; skinning before sowing, speeding up peanut metabolism, increasing seed osmotic pressure, and increasing seed water absorption 1-3 days before sowing, peeling, seeding, non-invasive seed germination. (2) Seed dressing before seeding Seeds of 0.1% seed dressing of 50% thiophanate-methyl or 50% carbendazim WP to prevent seedling disease, but also 50% of seed weight 0.2% The phoxim and chrysanthemums prevent underground pests, bird and rat damage. (3) Fine sowing, sowing depth of 4-6cm, to avoid contact of seed and fertilizer. (4) Using plastic film covering technology, the ground temperature is increased by 2-3°C. After sowing, the seeds germinate and the seedlings emerge quickly, which can reduce the incidence. (5) Science irrigation, avoid flood irrigation.
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Ginger
Tender Ginger,Fresh Tender Ginger,New Crop Ginger,Organic Fresh Ginger
Jining Sunagro Trade Co., Ltd. , http://www.sunagro-food.com