As one of the world’s most important crops, cotton is widely cultivated for its fiber. In order to ensure the optimal growth and productivity of cotton plants, foliar application of nutrients has been recommended by agricultural experts. One such foliar application method is the TNAU foliar application, which has been proven to be effective in enhancing cotton yield and quality.
Tamil Nadu Agricultural University (TNAU) has developed a unique foliar application technique that involves spraying a specific liquid nutrient mix onto the leaves of cotton plants at specific growth stages. This technique provides the plant with a balanced mix of essential nutrients required for proper growth and development.
The TNAU foliar application consists of three different formulations. Each formula is composed of a unique blend of macronutrients, micronutrients, and growth regulators. The first formulation is designed to be applied during the vegetative stage of plant growth, providing vital nutrients to support growth and development. The second formulation is for the reproductive stage of cotton plants. It contains a balanced mix of essential nutrients that promote flower formation, pollination, and fruit development. The third and final formulation is applied during the maturation stage, providing the plant with vital nutrients to support the development of mature bolls and high-quality fiber.
Apart from the specific nutrient requirements, the optimum time for TNAU foliar application is at sunrise or sunset when the plant’s stomata are open. These nutrient-rich sprays can be applied either by hand or machine, ensuring maximum nutrient uptake and absorption by cotton plants. However, it is important to avoid spraying during periods of high wind or extreme heat that can damage the plants.
Overall, the TNAU foliar application technique is a cost-effective and efficient way to enhance cotton growth and productivity. By providing the plant with the right mix of essential nutrients at the right time, the method helps to maintain a healthy plant and improve cotton quality and yield. Additionally, this technique can also help to reduce overall fertilizer usage and increase environmental sustainability.