CORRELATION AND REGRESSION ANALYSIS OF YIELD ATTRIBUTES IN RICE (Oryza sativa L.) AND LENTIL (Lens culinaris Medik.) UNDER PHOSPHORUS AND ZINC FERTILIZATION IN A RICE-LENTIL CROPPING SYSTEM
Year: 2026
Type: article
Abstract: A field experiment was conducted during the kharif and rabi seasons of 2018-19 and 2019-20 at the Central Research Farm, Gayeshpur, Nadia, West Bengal, under Bidhan Chandra Krishi Viswavidyalaya, to study the association among yield-attributing traits of rice and lentil under different phosphorus and zinc levels in a rice-lentil cropping system. The experiment was laid out in a split plot design with four phosphorus levels (0, 20, 40 and 60 kg P₂O₅ ha-1 ) in main plots and three zinc levels (0, 5 and 10 kg Zn ha-1 ) in subplots with three replications. In rice, panicle weight (r = 0.951), filled grains panicle-1 (r = 0.951), 1000-grain weight (r = 0.951), effective tillers m-2 (r = 0.906) and harvest index (r = 0.910) showed strong positive correlations with grain yield, while chaff percentage showed a strong negative correlation (r = -0.972). Regression analysis revealed high coefficients of determination for grain yield with chaff percentage (R2 = 0.944), panicle weight (R2 = 0.904), filled grains panicle-1 (R2 = 0.904) and 1000-grain weight (R² = 0.903). In lentil, pods plant-1 showed the highest positive correlation with seed yield (r = 0.974), followed by harvest index (r = 0.923), test weight (r = 0.918) and seeds pod-1 (r = 0.828). Regression analysis indicated R² values of 0.949, 0.851, 0.842 and 0.685 for pods plant-1 , harvest index, test weight and seeds pod-1 with seed yield, respectively. Balanced phosphorus and zinc nutrition significantly enhanced yield-attributing characters and productivity in both crops.
Source: PLANT ARCHIVES
Institution: Bidhan Chandra Krishi Viswavidyalaya
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W7204239734