SIBANI KUMARI, AMREEN HASAN, TARENCE THOMAS, ARUN ALFRED DAVID AND RAGHUNANDAN KHATANA
Abstract
The field experiment took place at the Sam Higginbottom University of Agriculture, Technology and Sciencesââ¬â¢ Soil Science Research Farm in Prayagraj during the Kharif season of 2021. Three different pairing were used in the investigation: three levels of NPK at 0%, 50%, and 100% ha-1, and three levels of neem cake at 0%, 50%, and 100% ha-1. The result obtained with treatment T9 [100% NPK +100% neem cake] Maximum Bulk density 1.272 Mg m-3 in 0-15cm and 1.333 Mg m-3 in 15-30cm, Particle density 2.550 Mg m-3 in 0-15cm and 2.580 Mg m-3 in 15-30cm, % Pore space 50.11% in 0-15cm and 48.33% in 15-30cm, Water holding capacity (%) 58.32% in 0-15cm and 58.00% in 15-30cm, pH 7.53 in 0-15cm and 7.54 in 15-30cm, EC (dSm-1) 0.341 in 0-15cm and 0.337 in 15-30cm, % Organic Carbon 0.425% in 0-15cm and 0.412% in 15-30cm, Available Nitrogen 279.38 kg ha-1 in 0-15cm and 273.28 kg ha-1 in 15-30cm, Available Phosphorus 16.86 kg ha-1 in 0-15cm and 16.15 kg ha-1 in 15-30cm and Available Potassium 179.87 kg ha-1 in 0-15cm and 175.0 kg ha-1 in 15-30cm. The use of Neem cake, as well as its blend with complete NPK, significantly improves the growth and overall production of Okra.