Effect of Chemical Manipulation on Growth, Yield and Fiber Traits of Compact Cotton
B. Rakavi
Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, India.
C. N. Chandrasekhar
Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, India.
M. Kumar
Department of Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore, India.
L. Arul
Department of Plant Biotechnology, Tamil Nadu Agricultural University, Coimbatore, India.
N. Manikanda Boopathi
Department of Plant Biotechnology, Tamil Nadu Agricultural University, Coimbatore, India.
P. Jeyakumar *
Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, India.
D. Vijayalakshmi
Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, India.
*Author to whom correspondence should be addressed.
Abstract
Crop management is one of the most important factors in modern agricultural activity. Studying the balance of growth stages and supplying optimal quantities of mineral nutrients and hormones to growing plants is essential to improve yield in short duration cotton varieties. In recent years, several approaches have been tried to break this yield plateau. The present investigation was intended to study and improve the yield of newly released variety Co 17 (compact cotton) by foliar application of nutrients, growth hormones, growth retardants and nutrient consortium. The treatments are mepiquat chloride (0.015%), potassium silicate (0.5%), Potassium schoenite (0.5%), borax (0.3%), salicylic acid (0.01%), calcium silicate (0.5%) and TNAU cotton plus (1.25%). Foliar application of different treatments at peak vegetative and flowering stage significantly influenced the leaf traits, root traits, and yield. Nutrient consortium (TNAU cotton plus – 53% over control) and growth retardant (mepiquat chloride- 42% over control) increased the seed cotton yield.
Keywords: Compact cotton, chemical manipulation, yield, quality.