PJB-2019-643
PHENOLOGY AND GROWTH OF WHEAT AS AFFECTED BY PHOSPHORUS SOLUBILIZING BACTERIA AND INTEGRATED USE OF ORGANIC AND INORGANIC P-FERTILIZERS
Muhmmmad Islam
Abstract
A field experiment was conducted at Agronomy Research Farm, The University of Agriculture, Peshawar-Pakistan, for two consecutive years (2015-16 and 2016-17) with the aims of evaluating the role of integrated phosphorus management and phosphorus solubilizing bacteria on wheat crop. Phosphorus solubilizing bacteria (with and without) and the integration of organic and inorganic P sources i.e. farmyard manure (FYM), poultry manure (PM) and single superphosphate (SSP) were tested in the experiments. Phosphorus was managed at the rate of 75 kg ha-1. Sole application of SSP caused earlier heading (110 days) and maturity (140 days). Among the P management ratios, 50% P from PM or FYM + 50% from SSP had better impact on wheat crop than other ratios as well as sole application of FYM, PM and SSP. Significantly taller plants (98.8 cm), maximum crop growth rate (17.1 g m-2 day-1), leaf area tiller-1 (118.5 cm2) and leaf area index (3.98 was achieved by the application of 50% P from PM + 50% from SSP. Phosphorus solubilizing bacteria significantly improved plant height (95.8 cm), crop growth rate (16.3 g m-2 day-1), leaf area tiller-1 (110.5 cm2) and leaf area index (3.65). More days to heading (114) and days to physiological maturity (144) were recorded in plots not sown with PSB treated seeds. It is concluded that PSB in combination 50% P from PM + 50% from SSP and 50% P from FYM + 50% from SSP performed better in terms of growth traits of wheat and thus recommended for wheat crop in the agro climatic condition of Peshawar-Pakistan
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