Plant population, nutrient uptake and yield of cotton (Gossypium hirsutum) Hybrids as affected by spacing and fertility levels under rainfed condition

The field experiment consisted of two crops geometry (S₁-90 X 60 cm and S₂-60 X 60 cm), three cotton hybrids (V₁-MLCH-318, V₂-VBCH-2231 and PKV Hy-2) and three levels of NPK (F₁-37.5: 18.75: 18.75, F₂-50: 25:25 and F₃-62.5: 31.25: 31.25 kg N: P₂O₅:K₂O/ha). Closer crop geometry of 60 X 60 cm significantly produced more plants population (271.51’ 00′/ha and 242.77’ 00′/ha at initial and harvest, respectively), lint yield (345 kg/ha). seed cotton yield (910 kg/ha) and stalk yield (1058 kg/ha) with uptake of N (40.39), P (14.78) and K (46.59 kg/ha) over wider crop geometry of 90 x 60 cm (S₁ Among hybrids, MLCH-318 (V₁) showed significantly superiority to VBCH-2231 (V₂) and PKV Hy-2 (V) in respect of lint yield (407 kg/ha), seed cotton yield (1034 kg/ha) and stalk yield (1054 kg/ha). MLCH-318 (V₁) when sown at crop geometry of 60 x 60 cm recorded the highest uptake of N (41.47 and 40.39), P (15.08 and 14.78) and K(48.01 and 46.59 kg/ha) with total uptake of NPK (104.56 and 101.76 kg/ha), respectively. The application of 62.5:31.25:31.25 N: P₂O₅: Kp/ha produced the maximum lint yield (393 kg/ha), seed cotton yield (972 kg/ha). stalk yield (988 kg/ha) and recorded higher uptake of N (40.33), P (15.08), K(46.81 kg/ha) and total uptake of NPK (102.22 kg/ha). The interaction effect between hybrids and crop geometries was found significant.