How to prepare foliar fertilizer? 15 simple methods shared
15 simple preparation methods for foliar fertilizer
(Agricultural Wealth Network) 1. Superphosphate leachate: it has the effect of supplementing phosphorus and controlling cotton pests. Take 2-3 kg of high-quality powdered superphosphate, add 100 kg of water, stir thoroughly, let stand for 24 hours, then filter, and spray the filtrate on the leaves.
2. Potassium dihydrogen phosphate solution: 300 g of potassium dihydrogen phosphate, diluted with 100 kg of water for spraying.
3. Mixed nitrogen-phosphorus-potassium solution: prepare 100 kg of a 2%-3% concentration superphosphate water leachate, add 0.3-0.5 kg of urea and 1-1.5 kg of potassium sulfate.
4. Potassium sulfate solution: the commonly used concentration is 1%-1.5%; add 1-1.5 kg of potassium sulfate to 100 kg of water.
5. Urea solution: the commonly used concentration is 0.5%-1%; 0.5-1 kg of urea diluted with 100 kg of clean water. If the content of the toxic substance biuret in urea exceeds 1.5%, it cannot be used as foliar fertilizer.
6. Urea-soap mixture solution: it has two effects, supplying nitrogen and killing aphids. Weigh 0.5-1 kg of urea, dilute with 100 kg of water, then dissolve in 70-100 g of laundry detergent. Mix and spray immediately; do not leave it standing for long after mixing.
7. Plant ash leachate: take 5-7 kg of fresh plant ash that has not been rained on, dilute with 100 kg of clean water, stir and let stand for 14 hours, then take the clear liquid for spraying.
8. Zinc sulfate solution: take 100-200 g of zinc sulfate, add 100 kg of water. If a small amount of limewater solution is added to the prepared zinc sulfate aqueous solution, the effect of foliar spraying of zinc fertilizer can be improved.
9. Borax solution: take 200-300 g of borax, dilute with 100 kg of clean water. Because borax dissolves slowly in cold water, you can first dissolve it with 4-5 kg of 45°C warm water, then add 95-96 kg of water.
10. Copper sulfate solution: add 30-50 g of copper sulfate to every 100 kg of clean water. To avoid toxicity, a small amount of limewater can be added.
11. Ferrous sulfate solution: take 200-300 g of ferrous sulfate, dilute with 100 kg of water. Because iron fertilizer has poor mobility in leaves, apply it several more times, and spray evenly and finely, covering both the front and back of the leaves. Adding 50-70 g of laundry detergent to 100 kg of iron fertilizer aqueous solution gives a better effect.
12. Manganese sulfate solution: take 50-100 g of manganese sulfate, dilute with 100 kg of water for spraying.
13. Ammonium molybdate solution: take 50-100 g of ammonium molybdate, add 100 kg of water for foliar spraying.
14. Diluted biogas slurry: biogas slurry is rich in readily available nitrogen, is easily absorbed by leaves, and has a rapid fertilizer effect. Take 10 kg of filtered biogas slurry, dilute with 100 kg of water for spraying. Use immediately after mixing to avoid nitrogen volatilization.
15. Rare earth micro-fertilizer aqueous solution: foliar spraying can increase chlorophyll content and enhance photosynthesis. The concentration range for spraying crops and fruit trees is 0.08%-0.10%. Add 80-100 mL of rare earth micro-fertilizer to every 100 kg of clean water.
2. Potassium dihydrogen phosphate solution: 300 g of potassium dihydrogen phosphate, diluted with 100 kg of water for spraying.
3. Mixed nitrogen-phosphorus-potassium solution: prepare 100 kg of a 2%-3% concentration superphosphate water leachate, add 0.3-0.5 kg of urea and 1-1.5 kg of potassium sulfate.
4. Potassium sulfate solution: the commonly used concentration is 1%-1.5%; add 1-1.5 kg of potassium sulfate to 100 kg of water.
5. Urea solution: the commonly used concentration is 0.5%-1%; 0.5-1 kg of urea diluted with 100 kg of clean water. If the content of the toxic substance biuret in urea exceeds 1.5%, it cannot be used as foliar fertilizer.
6. Urea-soap mixture solution: it has two effects, supplying nitrogen and killing aphids. Weigh 0.5-1 kg of urea, dilute with 100 kg of water, then dissolve in 70-100 g of laundry detergent. Mix and spray immediately; do not leave it standing for long after mixing.
7. Plant ash leachate: take 5-7 kg of fresh plant ash that has not been rained on, dilute with 100 kg of clean water, stir and let stand for 14 hours, then take the clear liquid for spraying.
8. Zinc sulfate solution: take 100-200 g of zinc sulfate, add 100 kg of water. If a small amount of limewater solution is added to the prepared zinc sulfate aqueous solution, the effect of foliar spraying of zinc fertilizer can be improved.
9. Borax solution: take 200-300 g of borax, dilute with 100 kg of clean water. Because borax dissolves slowly in cold water, you can first dissolve it with 4-5 kg of 45°C warm water, then add 95-96 kg of water.
10. Copper sulfate solution: add 30-50 g of copper sulfate to every 100 kg of clean water. To avoid toxicity, a small amount of limewater can be added.
11. Ferrous sulfate solution: take 200-300 g of ferrous sulfate, dilute with 100 kg of water. Because iron fertilizer has poor mobility in leaves, apply it several more times, and spray evenly and finely, covering both the front and back of the leaves. Adding 50-70 g of laundry detergent to 100 kg of iron fertilizer aqueous solution gives a better effect.
12. Manganese sulfate solution: take 50-100 g of manganese sulfate, dilute with 100 kg of water for spraying.
13. Ammonium molybdate solution: take 50-100 g of ammonium molybdate, add 100 kg of water for foliar spraying.
14. Diluted biogas slurry: biogas slurry is rich in readily available nitrogen, is easily absorbed by leaves, and has a rapid fertilizer effect. Take 10 kg of filtered biogas slurry, dilute with 100 kg of water for spraying. Use immediately after mixing to avoid nitrogen volatilization.
15. Rare earth micro-fertilizer aqueous solution: foliar spraying can increase chlorophyll content and enhance photosynthesis. The concentration range for spraying crops and fruit trees is 0.08%-0.10%. Add 80-100 mL of rare earth micro-fertilizer to every 100 kg of clean water.