تلخیص
A two-year field study was conducted during 1998 and 1999 to examine the effect of Bradyrhizobium species (Arachis) as seed treatment, and a mixture of two diazotroph bacterial inoculum (Azotobacter and Azospirillum spp.) as foliar spray on groundnut crop after germination; alone and in combination under N-fertilizer levels of 0, 10, 20 and 40 kg ha'. Bradyrhizobium sp. along with diazotroph inoculum increased pod number, pod yield, nodular masslnumber of groundnut crop, plant-N content and residual soil N during both years. However, higher dose of nitrogen (40 kg ha"') decreased modulation. Pod yield of groundnut increased by 44.3 and 43.2% due to application of both inocula compared with uninoculaied treatment at 10 and 20 kg N fertilizer application, respectively. However, contribution of Bradyrhizobium sp. was more than diazotroph inoculum for increasing pod yield. Bradyrhizobium sp. alone increased pod yield by 31.7 and 33.5% at 10 and 20 kg N latil compared with iminoculated treatment, respectively.
Muhammad Musa, Masher Iqbal, ZahidAshfaq Ahmad. (2003) Effect Of Bradyrhizobium In Association With Diazotroph Bacterial Inoculum On Pod Yield And N-Economy Of Groundnut Under Varying N-Levels, The Journal Soil & Environment , Volume 22, Issue 2.
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