Effect of nitrogen application on phenology, growth, yield and quality of pearl millet hybrids under limited water supply
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Date
2005
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CCSHAU
Abstract
The present experiment entitled, "Effect of nitrogen application on phenology,
growth, yield and quality of pearl millet hybrids under limited water supply " was
conducted at Research Farm, Chaudhary Charan Singh Haryana Agricultural University,
Hisar, during kharif season of 2004. Three pearl millet hybrids viz., HHB 67, HHB 67-2
and HHB 68 and six levels of nitrogen viz.,, 0 (no nitrogen - control), 20, 40, 60, 80 and
100 kg N ha-1 were tested in factorial randomized block design with three replications.
Though, different pearl millet hybrids did not differ significantly in respect of
phenological development, but differed significantly in growth (plant height, leaf area,
number of tillers and dry matter accumulation plant-1), yield attributing characters (ear
length, ear girth, 1000-grain weight, harvest index and grain yield plant-1) and final grain,
yield ha-1. Response of pearl millet hybrids to N application was quadratic and economic
optimum dose(s) came out to be 79.21, 80.41 and 77.75 kg ha-1 for HHB 67-2, HHB 67
and HHB 68, respectively. Among pearl millet hybrids, HHB 67-2 recorded significantly
higher N, K and protein content, protein yield and N uptake as well. Marked differences
in the seasonal consumptive use of water and water-use efficiency (W-UE) were recorded
for pearl millet hybrids; highest values being of HHB 67-2.
Various levels of nitrogen did not influence the phenological development
(events) of pearl millet significantly. However, plant growth in terms of height, tillers,
leaf area and dry matter accumulation plant-1 and leaf area index increased significantly
with increasing levels of nitrogen at most of the stages of observation. Similarly, yield
attributing characters (ear plant-1, ear length, ear girth, 1000-grain weight and grain yield
plant-1) and grain yield increased significantly with increasing levels of nitrogen. The N, P
and K content (%), uptake (kg ha-1), protein content in grain(%) and protein yield (kg ha-1)
increased with increasing levels of nitrogen. Seasonal consumptive water-use and W-UE
by pearl millet improved markedly with increasing levels of nitrogen.