Abstract
The field experiments were conducted with three pearl millet hybrids (viz., HHB-50, HHB-60, HHB-67) under twelve combinations of bio-fertilizer ( Azotobacter chrooccocum ), 5t FYM ha m 1 and four levels of mineral nitrogen (40, 80, 120, 160 kg N ha m 1 ) during two monsoon seasons at the research farm of the CCS Haryana Agricultural University, Hisar, India. The results revealed that the hybrids HHB-50 and HHB-60 were significantly higher yielder than the HHB-67. In general, increased levels of fertilizer application improved grain yield and soil water use through remarkable improvement in different growth and yield attributing characters. However, yield advantages varied significantly under different fertility levels. The grain yield was almost 1.5 fold with 5t FYM + bio-fertilizer ha m 1 and two fold with 40 kg N + 5t FYM + bio-fertilizer ha m 1 over control (no fertilizer). Thus, these combinations of low input system of integrated nutrient management could be most beneficial to obtain relatively good yields of pearl millet hybrids by resource poor farmers of semi-arid tropical environment.
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