Effect of Plant Growth Promoting Rhizobacteria and Integration of Chemical and Organic Fertilizers on Yield and Yield Components of Corn (s.c. 704)

Document Type : Research Article

Authors

1 Former MSc Student of Agronomy, Tarbiat Modarres University and Ph.D. Student of Crop Physiology, Faculty of Agriculture, Yasouj University, Yasouj, Iran

2 Associate Professor, Department of Agronomy, Faculty of Agriculture, Tarbiat Modarres University, Tehran, Iran

Abstract

In order to study the different nutritional systems on grain yield and yield components of corn (S.C.704) in different levels of biofertilizers, the experiment was conducted at the research farm faculty of agriculture, Tarbiat Modarres University during 2010. The experiment was conducted factorial design base on Randomized Complete Block Design with three replications. Treatments were include five different nutritional systems: A1 (8 ton ha-1 organic fertilizer), A2 (6 ton ha-1 organic fertilizer + 46 kg ha-1 net nitrogen), A3 (4 ton ha-1 organic fertilizer + 92 kg ha-1 nitrogen), A4 (2 ton ha-1 organic fertilizer + 138 kg ha-1 nitrogen) and A5 (184 kg ha-1 nitrogen) and biofertilizer (nitrogen fixation bacteria include Azotobacter and Azospirillium) at two levels included: B1 (inoculation) and B2 (non-inoculation). The results showed that amount grain yield and harvest index at A3 nutritional systems was obtained 10 ton ha-1 and 46.72 percent, respectively. In seeds inoculated (B1) grain yield and yield components were higher than the control, So that grain yield and 1000-seed weight in inoculated treatments 9.7 ton ha-1 and 205.4 g respectively. With biofertilizer (B1) amount of leaf area index (LAI), seed yield and harvest index was obtained 7.75, 9.78 ton ha-1, and 44.10 percent, respectively.According to the results grain yield were the better in the combination of biofertilizers and A3 nutritional systems of organic fertilizers and chemical fertilizers (10.56 ton ha-1) than when used alone.

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References

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