Title: Effect of diazotrophs on yields of corn, sunflower and sugarbeet
Abstract: We studied the effect of Azotobacter chroococcum, Azospirillum lipoferum, Beijerinckia Derx and Klebsiella planticola and yields of three corn hybrids, two sunflower hybrids and three sugarbeet varieties grown in field conditions on the calcareous chernozem soil. Control variants received 30, 60 and 90 kg N/ha, while the inoculated variants did not receive nitrogen fertilizer. The effectiveness of the diazotrophs was found to depend on diazotroph species and strain, as well as on plant species. On average for the three plant species, the species Azotobacter chroococcum and Azospirillum lipoferum were most effective. The study indicated the presence of genetic specificity of diazotroph strain for plant species. It ensues that selection of diazotrophs should be done at the level of plant genotype, in order to find most effective strains for each variety and hybrid. The effectiveness of the diazolrophs was high in sugarbeet and corn, somewhat lower in sunflower.
Publication Year: 2000
Publication Date: 2000-01-01
Language: en
Type: article
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