Vol. 7 No. 2
Effect of integrated nutrient management on growth and yield of wheat (Triticum aestivum L.)
Author(s): K. N. DEVI, M. S. SINGH, N. G. SINGH AND H. S. ATHOKPAM
Abstract: A field experiment was conducted during winter season of 1997–98 and 1998–99 on sandy-loam soil of Hisar, Haryana. The experiment consisting of 6 organic manures in main plots and 5 fertilizer levels in subplots was laid out in split-plot design with 3 replications. Application of organic manures irrespective of source and rate increased the dry-matter accumulation, leaf-area index, effective tiller number, grains/ear, grain and straw yields, photosynthetic pigments (chlorophyll ‘a’, ‘b’ and carotenoids) and photosynthesis of wheat (Triticum aestivum L. emend. Frori & Paol.) significantly over no organic manure during both years. Maximum values of all the attributes were observed with vermicompost at 15 tonnes/ha which was significantly superior to the rest of the organic manure treatments. Increasing dose of nitrogen improved all the above-mentioned parameters of wheat. Maximum values were recorded with the recommended dose of 120 kg N + 60 kg P2O5 + 60 kg K2O/ha. However, nitrogen at 120 and 90 kg/ha + Azotobacter were statistically at par with recommended dose of NPK. Inoculation of wheat seeds with Azotobacter chroococcum strain HT-56 also improved growth, yield, photosynthetic pigments and photosynthesis of wheat during both the years.
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