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Dose of Zinc Sulfate for Foliar Application in Paddy
Zinc is an essential micronutrient for the growth and development of crops, including paddy. It plays a crucial role in several physiological processes such as photosynthesis, enzyme activation, and carbohydrate metabolism. Adequate zinc availability can increase the yield and quality of crops, while its deficiency can affect crop growth and result in reduced yields. Foliar application of zinc sulfate is one of the effective ways to provide zinc to paddy plants. But, how much zinc sulfate should be used for foliar application in paddy? Let’s find out.
Zinc sulfate for foliar application in paddy is usually applied in the form of a solution. The recommended dose of zinc sulfate depends on several factors such as soil type, crop growth stage, and severity of zinc deficiency. In general, the recommended dose of zinc sulfate for foliar application in paddy is 0.5% to 1.0% w/v. This means that 5 to 10 grams of zinc sulfate should be dissolved in one liter of water.
The zinc sulfate solution should be sprayed uniformly on the paddy leaves, especially on the lower surface, where most of the stomata are present. The best time for foliar application of zinc sulfate is during the vegetative stage, when paddy plants are actively growing and developing. The frequency of foliar application depends on the severity of zinc deficiency and the soil’s ability to supply zinc. In general, two to three foliar applications of zinc sulfate are recommended during the growing season.
It is crucial to note that over-application of zinc sulfate can have adverse effects on paddy plants. Excess zinc can interfere with the absorption of other micronutrients and result in soil toxicity. Thus, it is best to consult with a professional agronomist or soil scientist to determine the recommended dose of zinc sulfate for foliar application in paddy.
In conclusion, foliar application of zinc sulfate is an effective way to provide zinc to paddy plants. The recommended dose of zinc sulfate for foliar application in paddy ranges from 0.5% to 1.0% w/v, depending on soil type, crop growth stage, and severity of zinc deficiency. Proper foliar application of zinc sulfate during the vegetative stage can increase the yield and quality of paddy crops. However, over-application of zinc sulfate should be avoided to prevent soil toxicity.