Foliar topdressing is a fertilization method often used in production. Now introduce the fertilizer suitable for peanut leaf surface application and its application method:
1. Urea. In the middle and late stages of peanut growth, if the plant has a phenomenon of de-fertilization, or continuous rainfall in the growing season of peanuts causes water accumulation in the field and difficulty in root fertilizer absorption, foliar spraying can be carried out with 1% urea solution.
2. Superphosphate. Peanut leaves have a strong ability to absorb phosphorus. In the middle and late stages of growth, 2% to 3% of calcium perphosphate leaching solution per 667 square meters is sprayed once every 7 to 10 days, even for 2 to 3 times. Speed ​​up the operation of photosynthetic products to the pods.
3. Urea and superphosphate mixed spray. In a plot of phosphorus deficiency and nitrogen deficiency, 1 kg of urea can be added to 100 kg of 2% superphosphate leaching solution.
4. Potassium dihydrogen phosphate. 150-200g of potassium dihydrogen phosphate per 667 square meters, 50kg of water, sprayed in the evening or cloudy afternoon after being fully dissolved, preferably sprayed 3 times, every 7 days; if it is 8 hours after spraying Rain, to be sprayed once, can increase yield by 18.2% to 26.9%.
5. Potassium fertilizer. Foliar spray with 5% to 10% straw ash leaching solution or 2% potassium sulphate (or potassium chloride) solution, spraying 60 kg per 667 square meters.
6. Iron fertilizer. Applying iron fertilizer on iron-deficient soil can increase yield by more than 10%. Generally, when the peanut flowering period, the pod-forming period or the plant has iron deficiency symptoms, spray 0.2% ferrous sulfate solution every 5 to 6 days, and spray continuously for 2 to 3 times.
7. Boron fertilizer. In the peanut seedling stage, the initial flowering stage and the full flowering stage, spraying with 0.2% borax or boric acid solution can increase the yield by 7.8%~22.5%.
8. Manganese fertilizer. The application of manganese fertilizer on manganese-deficient soil can increase yield by 8% to 11%. From 30 to 50 days after sowing of peanuts, 15 to 20 days before harvesting, spray with 0.1% manganese sulfate solution every 10 to 14 days; if necessary, mix with fungicides for controlling peanut leaf spot.
9. Molybdenum fertilizer. In peanut seedling and flowering period, foliar application with 0.1% to 0.2% ammonium molybdate solution can increase yield by 11.39%.
10. Rare earth micro-fertilizer. Rare earth micro-fertilizer is also called rare earth nitrate. It uses 40g of rare earth micro-fertilizer per 667 square meters, 50kg of water, and sprayed on the foliar surface of the initial flowering stage, which can increase yield by 9.5%~14.1%.
Source: China Agricultural Network
1. Urea. In the middle and late stages of peanut growth, if the plant has a phenomenon of de-fertilization, or continuous rainfall in the growing season of peanuts causes water accumulation in the field and difficulty in root fertilizer absorption, foliar spraying can be carried out with 1% urea solution.
2. Superphosphate. Peanut leaves have a strong ability to absorb phosphorus. In the middle and late stages of growth, 2% to 3% of calcium perphosphate leaching solution per 667 square meters is sprayed once every 7 to 10 days, even for 2 to 3 times. Speed ​​up the operation of photosynthetic products to the pods.
3. Urea and superphosphate mixed spray. In a plot of phosphorus deficiency and nitrogen deficiency, 1 kg of urea can be added to 100 kg of 2% superphosphate leaching solution.
4. Potassium dihydrogen phosphate. 150-200g of potassium dihydrogen phosphate per 667 square meters, 50kg of water, sprayed in the evening or cloudy afternoon after being fully dissolved, preferably sprayed 3 times, every 7 days; if it is 8 hours after spraying Rain, to be sprayed once, can increase yield by 18.2% to 26.9%.
5. Potassium fertilizer. Foliar spray with 5% to 10% straw ash leaching solution or 2% potassium sulphate (or potassium chloride) solution, spraying 60 kg per 667 square meters.
6. Iron fertilizer. Applying iron fertilizer on iron-deficient soil can increase yield by more than 10%. Generally, when the peanut flowering period, the pod-forming period or the plant has iron deficiency symptoms, spray 0.2% ferrous sulfate solution every 5 to 6 days, and spray continuously for 2 to 3 times.
7. Boron fertilizer. In the peanut seedling stage, the initial flowering stage and the full flowering stage, spraying with 0.2% borax or boric acid solution can increase the yield by 7.8%~22.5%.
8. Manganese fertilizer. The application of manganese fertilizer on manganese-deficient soil can increase yield by 8% to 11%. From 30 to 50 days after sowing of peanuts, 15 to 20 days before harvesting, spray with 0.1% manganese sulfate solution every 10 to 14 days; if necessary, mix with fungicides for controlling peanut leaf spot.
9. Molybdenum fertilizer. In peanut seedling and flowering period, foliar application with 0.1% to 0.2% ammonium molybdate solution can increase yield by 11.39%.
10. Rare earth micro-fertilizer. Rare earth micro-fertilizer is also called rare earth nitrate. It uses 40g of rare earth micro-fertilizer per 667 square meters, 50kg of water, and sprayed on the foliar surface of the initial flowering stage, which can increase yield by 9.5%~14.1%.
Source: China Agricultural Network
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