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Effect of the application of Azospirillum sp. And Azotobacter sp. And the growth and productivity of kikuyo (Pennisetum clandestinum)

Abstract:

The use of plant growth-promoting bacteria (PGPR) is considered an alternative to substitute chemical fertilizers since it favors the productivity of plant species. The present study evaluated the effect of PGPR of the genera Azospirillum sp. and Azotobacter sp. on Pennisetum clandestinum (kikuyo) on plant height, maximum leaf length, root length, fresh biomass, and total protein. The bacteria were applied periodically on the crop, the first inoculation was applied after plowing the soil and every 15 days thereafter, until day 45. The results show that Azospirillum sp. and Azotobacter sp. influenced the growth and yield of kikuyo. The application of Azospirillium sp. showed a significant increase in kikuyo on the parameters plant height and root length, while Azotobacter sp. in the production of fresh biomass, root length, and total protein, so the use of these beneficial organisms could be of great importance in the activities of pasture production for livestock, besides being an aid to reduce the use of chemicals, which would contribute to better crop management and environmental care.