Ashish and Manoj Kumar
Department of Botany, Faculty of Sciences, Baba Masthnath University, Rohtak-124 021 (Haryana), India
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(Received : May 6, 2020; Accepted : July 12, 2020)
Field experiments were carried out on wheat crop at Rohtak, India during the rabi season of 2019-20 and evaluated the effect of plant growth promoting rhizobacteria (Azotobacter sp., Bacillus sp. and Pseudomonas sp.) with 75% nitrogen (N) and recommended dose of phosphorus (P) and potassium (K). The results showed that maximum plant height and number of tillers were recorded in treatment (75% N+Full P and K+Azotobacter sp. + Bacillus sp. + Pseudomonas sp.). The combined application of 75% N with either two or three species of PGPR viz., 75% N + Full P and K+Azotobacter sp. + Bacillus sp., 75% N + Full P and K + Bacillus sp. + Pseudomonas sp., 75% N + Full P, K + Azotobacter sp. + Pseudomonas sp. and 75 % N + Full P, K+Azotobacter sp.+Bacillus sp.+Pseudomonas sp. treatments had significantly increased growth attributes over treatment 75% N + Full P, K. The grain, straw and biological yields of wheat crop were significantly
increased by the application of PGPR’s. The highest grain yield in wheat crop was recorded by the application of 75% N + Full P and K + Azotobacter sp. + Bacillus sp. + Pseudomonas sp. treatment.
Key words : PGPRs, plant growth, nitrogenous fertilizers, seed yield