Tamil Nadu Agricultural University (TNAU) has come up with some important information related to the foliar application of nutrients for cotton. In this article, we will discuss some of the key aspects related to TNAU foliar application for cotton.
Cotton, being a major cash crop of India, is grown extensively in various states. It requires a balanced nutrient application to ensure optimum yield and quality. Foliar application of nutrients is one of the most efficient ways to improve the yield potential of cotton. Here are some important things you should know about TNAU foliar application for cotton.
1. Importance of Foliar Application
Foliar application of nutrients is the targeted spray application of mineral nutrients, growth regulators, and other beneficial chemicals directly to plant leaves. This technique is gaining more importance for cotton crop as it enhances the nutrient uptake efficiency of plants and improves the yield and quality of cotton.
2. Foliar Nutrient Application Recommendations
TNAU recommends foliar application of nutrients at different growth stages for cotton. The recommended time for foliar nutrient application for cotton is at 30 to 35 days after planting (DAP) for nitrogen and phosphorous, at 45 to 50 DAP for potassium, and at 60 to 65 DAP for micronutrients.
3. Nutrients Applied and Their Role
Foliar application of various nutrients have been recommended by TNAU for cotton. The most commonly used nutrients for foliar application are nitrogen (N), phosphorous (P), potassium (K), and micronutrients such as zinc, iron and manganese. These nutrients play key roles in facilitating plant growth, photosynthesis, and the overall yield and quality of the cotton crop.
4. Dosage and Concentration
The recommended dosage and concentration for foliar application of nutrients for cotton are as follows:
– Nitrogen (Urea) – 1.5 to 2.5% (15 to 25 gm/l)
– Phosphorous (DAP) – 1.5% (15 gm/l)
– Potassium (MOP) – 1.5% (15 gm/l)
– Zinc Sulphate – 0.5% (5 gm/l)
– Ferrous Sulphate – 0.5% (5 gm/l)
– Manganese Sulphate – 0.5% (5 gm/l)
5. Application Techniques
Foliar nutrient application for cotton can be done through various techniques such as hand sprayers, backpack sprayers, high-volume sprayers or using drones. The most important thing is to ensure uniform coverage of the crop during these applications.
In conclusion, foliar application of nutrients is a simple yet effective method to achieve maximum cotton yield and quality. TNAU foliar application recommendations for cotton are backed by research and provide guidance to farmers to get the most out of their crop. Adaptation of these recommendations by cotton farmers will surely result in better and sustainable cotton production in India.