Effect of Nutrient Management Practices on Yield Attributes of Cotton Hybrids under High Density Planting System
V. Shalini *
Department of Soil Science and Agricultural Chemistry, College of Agriculture, PJTAU, Hyderabad, India.
K. Pavan Chandra Reddy
AICRP on STCR, ISHM, Agricultural Research Institute, Rajendranagar, Hyderabad, India.
G. Jayasree
Department of Soil Science and Agricultural Chemistry, College of Agriculture, PJTAU, Hyderabad, India.
P. Satish
Department of Agronomy, College Farm, College of Agriculture, PJTAU, Hyderabad, India.
A. Meena
Department of Statistics and Mathematics, College of Agriculture, PJTAU, Hyderabad, India.
*Author to whom correspondence should be addressed.
Abstract
Aim: To study the impact of various nutrient management practices on yield attributes of cotton hybrids under high-density planting systems (HDPS).
Study Design: The experiment was laid in Split plot design with hybrids as main plot and nutrient management practices as sub plots.
Place and Duration of Study: College Farm, College of Agriculture, Professor Jayashankar Telangana Agricultural University, Rajendranagar, Hyderabad during Kharif 2021 and Kharif 2022.
Methodology: Hybrids as main plots (NCS2778 and RCH665) and nutrient management practices as sub plots (S1-100 % RDF (120-60-60 kg-1 N:P2O5:K2O), S2-120 % RDF (144-72-72 kg ha-1 N:P2O5:K2O), S3-140 % RDF (168-84-84 kg-1 N:P2O5:K2O, S4-STCR based fertiliser application (Targeted yield of 27 q ha-1) (149-64-73 kg-1 N:P2O5:K2O), S5-STCR based fertiliser application (Targeted yield of 30 q ha-1) (173-72-87 kg -1 N:P2O5:K2O),S6-STCR based fertiliser application (Targeted yield of 32 q ha-1) (189-77-97 kg-1 N:P2O5:K2O)) replicated thrice.
Results: The highest pooled seed index (10.54 g), lint index (6.02 g), and ginning percentage (36.31%) were recorded under S6 (STCR-based fertilizer application targeting 32 q ha⁻¹), while the lowest seed index (8.49 g), lint index (3.97 g), and ginning percentage (31.23%) were observed under S1 (100% RDF at 120-60-60 kg ha⁻¹ N:P ₂O₅:K ₂O). Among the hybrids, NCS2778 outperformed RCH665, achieving the highest pooled seed index (10.28 g), lint index (5.64 g), and ginning percentage (34.98%).
Conclusion: These findings highlight the effectiveness of STCR-based nutrient management in enhancing cotton yield and quality.
Keywords: High density planting, seed index, lint index, nutrient management, hybrids