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Asian Journal of Plant Sciences
  Year: 2007 | Volume: 6 | Issue: 1 | Page No.: 77-82
DOI: 10.3923/ajps.2007.77.82
Effects of (Azotobacter and Azosprillium) Inoculants and Chemical Fertilizers on Growth and Productivity of Canola (Brassica napus L.)
Esmaeil Yasari and A.M. Patwardhan

Abstract:
To investigate the effects of inoculants (biofertilizer) and chemical fertilizer on the yield, yield components and seed oil content of canola (Brassica napus L.), a split-plot experimental design with 20 treatments in 4 replications was carried out during 2004-2005 growing season at the Baiecola Agricultural Research Station in the Mazandaran province, Iran. Canola (cv. Hyola 401 hybrid), a high yielding early maturity variety, was grown in rotation after wheat. In the main plots, the biofertilizer treatments were at two different levels: 1) control (no seed inoculation) and 2) seed-inoculation with a combination of three different strains of bacteria Azotobacter chrocooccum and Azosprillium brasilense and Azosprillium lipoferum. In the two sets of 10 sub-plots chemical fertilizers comprising N, P, K and their combinations, NPKS and NPK Zn were applied. The seed yield touched a high of 3741.5 kg h-1 at treatment T20 (Bio + NPK Zn), that corresponded to 257.7 pods per plant and maximum CGR (18.3 g m-2 day-1). The highest weight of 1000 seeds (4.45 g) was obtained at treatment no T19 (Bio + NPK S) which coincided with the maximum TDM (1155 g-2) and maximum LAI (5.06). The maximum branching (4.43 branches per plant) was obtained at treatment T20 (Bio + NPK Zn) showing a 46.2% increase over the control. The maximum oil content 47.73% was obtained at T16 (Bio + NK). The application of inoculation with Azotobacter and Azosprillium helped to increase the yield by 21.17% over the control, raised the number of pods per plant (16.05%), number of branches (11.78%), weight of 1000 grain (2.92%) and the oil content of seeds (1.73%) but decreased (-0.24%) the number of seeds per pod.
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How to cite this article:

Esmaeil Yasari and A.M. Patwardhan, 2007. Effects of (Azotobacter and Azosprillium) Inoculants and Chemical Fertilizers on Growth and Productivity of Canola (Brassica napus L.). Asian Journal of Plant Sciences, 6: 77-82.

DOI: 10.3923/ajps.2007.77.82

URL: https://scialert.net/abstract/?doi=ajps.2007.77.82

 
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