Five major taboos for zinc fertilizer application
2020-09-19 12:14:10
Avoid blind application
It is only effective to apply zinc fertilizer to zinc-deficient plots and zinc-sensitive crops, so the application of zinc fertilizers should vary from place to place and from crop to crop and should not be applied blindly. Generally speaking, when the effective zinc content of the soil is less than 0.5 mg/kg, the effect of applying zinc fertilizer on yield increase is remarkable. When the effective zinc content of the soil is higher than 1 mg/kg, the effect of applying zinc fertilizer is basically small. The most sensitive crops for zinc are rice, corn, sorghum, soybeans, tomatoes, etc. Medium-sensitive crops include potatoes, onions, beets, etc., and the application of zinc fertilizer should be given special attention to these crops.
Excessive application
Zinc fertilizer is a micro-fertilizer. The crop needs less for it, and it can't be used more. Excessive application levels have a toxic effect on crops. When zinc fertilizer is used as the base fertilizer, depending on the degree of zinc deficiency in the soil, generally 0.5 to 2 kg of zinc sulfate per acre is applied; when topdressing is applied, 0.75 to 1 kg of zinc sulfate per acre is applied, and appropriate amount of fine soil is applied; Apply 90-180 grams of zinc sulfate per acre to 60 kilograms of water for spraying on sunny days.
Simultaneous application of three bogey and phosphate fertilizer
The combination of zinc and phosphate fertilizers easily forms zinc phosphate precipitates, which not only reduces the effectiveness of zinc fertilizer, but also reduces the effectiveness of phosphate fertilizer.
Four bogey mixed with alkaline fertilizer and pesticide
The zinc fertilizer is mixed with alkaline fertilizers such as lime, grass ash and ammonia water, and the acidic ions react with the alkaline ions to reduce the fertilizer efficiency. Similarly, zinc fertilizer is mixed with alkaline pesticides such as Bordeaux mixture, stone sulphur mixture and rosin mixture, and the effectiveness of zinc and pesticides decreases.
Five bogey
After the application of zinc fertilizer, the effect is very small in the same year. In the second year, the fertilizer effect can be fully exerted. This is what people call "the zinc fertilizer has the aftereffect". Therefore, the zinc fertilizer does not need to be applied year after year, and the application effect is generally good every other year.
It is only effective to apply zinc fertilizer to zinc-deficient plots and zinc-sensitive crops, so the application of zinc fertilizers should vary from place to place and from crop to crop and should not be applied blindly. Generally speaking, when the effective zinc content of the soil is less than 0.5 mg/kg, the effect of applying zinc fertilizer on yield increase is remarkable. When the effective zinc content of the soil is higher than 1 mg/kg, the effect of applying zinc fertilizer is basically small. The most sensitive crops for zinc are rice, corn, sorghum, soybeans, tomatoes, etc. Medium-sensitive crops include potatoes, onions, beets, etc., and the application of zinc fertilizer should be given special attention to these crops.
Excessive application
Zinc fertilizer is a micro-fertilizer. The crop needs less for it, and it can't be used more. Excessive application levels have a toxic effect on crops. When zinc fertilizer is used as the base fertilizer, depending on the degree of zinc deficiency in the soil, generally 0.5 to 2 kg of zinc sulfate per acre is applied; when topdressing is applied, 0.75 to 1 kg of zinc sulfate per acre is applied, and appropriate amount of fine soil is applied; Apply 90-180 grams of zinc sulfate per acre to 60 kilograms of water for spraying on sunny days.
Simultaneous application of three bogey and phosphate fertilizer
The combination of zinc and phosphate fertilizers easily forms zinc phosphate precipitates, which not only reduces the effectiveness of zinc fertilizer, but also reduces the effectiveness of phosphate fertilizer.
Four bogey mixed with alkaline fertilizer and pesticide
The zinc fertilizer is mixed with alkaline fertilizers such as lime, grass ash and ammonia water, and the acidic ions react with the alkaline ions to reduce the fertilizer efficiency. Similarly, zinc fertilizer is mixed with alkaline pesticides such as Bordeaux mixture, stone sulphur mixture and rosin mixture, and the effectiveness of zinc and pesticides decreases.
Five bogey
After the application of zinc fertilizer, the effect is very small in the same year. In the second year, the fertilizer effect can be fully exerted. This is what people call "the zinc fertilizer has the aftereffect". Therefore, the zinc fertilizer does not need to be applied year after year, and the application effect is generally good every other year.
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