Zinc deficiency is one of the most common nutritional disorders observed in crops worldwide, and paddy is no exception. Zinc is an essential micronutrient required in small quantities for the normal growth and development of plants. Its deficiency can lead to severe stunting of plant growth, reduced yields, and poor quality of grain. In this article, we will discuss the information regarding deficiency of Zinc Sulphate in paddy crop and its impact on crop production.
Zinc Sulphate is a commonly used micronutrient fertilizer that supplies zinc to the crop. The standard application rate of Zinc Sulphate in paddy is 25 to 30 kg/ha. Zinc deficiency in paddy is associated with soil characteristics such as high pH, low organic matter, and other soil factors like high levels of phosphorus, iron and calcium. These factors reduce the availability and uptake of Zinc by the crop resulting in Zinc deficiency symptoms.
Zinc deficiency in paddy can be identified by visual symptoms like chlorosis or yellowing of leaves, shorter internodes, and reduced size of leaves. These symptoms are more visible in the younger leaves, and the severity of symptoms increases with the age of the plant. Zinc deficiency also leads to delayed maturity, lesser number of panicles per unit area and ultimately results in a significant reduction in yield.
The addition of Zinc Sulphate either through soil application, foliar sprays or fertigation is the best remedial measure to overcome Zinc deficiency in paddy. Soil application is the most preferred method, and Zinc Sulphate is mixed with other fertilizers during soil preparation. Foliar sprays are used during the critical stages of the crop, especially during the early stages when leaf development is rapid, and the plant is actively growing.
In conclusion, Zinc deficiency is a major nutritional disorder in paddy crop, causing reduced yield and poor grain quality. It is imperative to identify and take corrective measures to ensure a sufficient supply of Zinc to the plant. Soil application of Zinc Sulphate is the most effective and economical method to correct the deficiency and ensure a healthy paddy crop.