How to prevent premature senescence in peanuts? Master the control methods
How to prevent premature senescence in peanuts? Please advise: to prevent premature senescence in peanuts, the following points should be followed: 1. Site selection. Choose fields with relatively high fertility, and apply sufficient base fertilizer, plow deeply 25-30 cm early, and sun the ridges. Apply 2000 kg of rotted barnyard manure or 25-35 kg of cake fertilizer, 50 kg of ternary compound fertilizer, 50 kg of phosphate fertilizer, zinc fertilizer... per mu.
How to prevent premature senescence in peanuts? Please advise
To prevent premature senescence in peanuts, the following points should be followed:
1. Site selection. Choose fields with relatively high fertility, and apply sufficient base fertilizer, plow deeply 25-30 cm early, and sun the ridges. Apply 2000 kg of rotted barnyard manure or 25-35 kg of cake fertilizer, 50 kg of ternary compound fertilizer, 50 kg of phosphate fertilizer, 1 kg of zinc fertilizer, and 250-500 g of boron fertilizer per mu as base fertilizer.
2. Weeding. After plastic film mulching, the soil temperature rises, and weed damage is often even more serious than in open fields. Therefore, chemical weeding must be carried out after sowing. Use 100 ml of 72% Duer per mu, mix with 50 kg of water, and spray when the soil is moist. Cover with film immediately after spraying.
3. Topdressing. After plastic film mulching, the soil temperature rises, fertilizer decomposition accelerates, and more is absorbed by the plants in the early stage, making it easy to run short of fertilizer after pod setting, especially in plots with poor soil fertility. Therefore, during the flowering and pegging stage, apply 20 kg of urea per mu, mixed with water as a topdressing. Foliar fertilizer can also be sprayed 2-3 times; a mixed solution of urea and monopotassium phosphate, or Shishibao, etc., can be used, applied after 4 p.m.
4. Watering. When soil moisture is insufficient, especially around midday in summer, the plants will temporarily wilt and this causes premature senescence. Water promptly in the evening, and shallowly loosen the soil between rows to conserve moisture.
5. Disease prevention. Leaf spot is the main disease of peanuts; it occurs easily with much rain and high humidity. Before onset and in the early stage of onset, spray 800-1000 times dilution of 50% carbendazim wettable powder, 500 times dilution of 50% mancozeb, 1000 times dilution of 70% thiophanate-methyl, or 600 times dilution of 75% chlorothalonil wettable powder. Apply once every 7-10 days, spraying 3 times in succession, and note to rotate the chemicals.
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