Increase in the development of Pueraria phaseoloides (tropical Kudzu) due to tolerant acid rhizobia under acidity and low fertility conditions
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Abstract
The acidity did not decrease the nodulation or the growth of kudzu plants, inoculated with K2 and 1_2 under controlled conditions. The inoculation of kudzu with rhizobia isolates produced effectiveness in the biological fixation of nitrogen, more than 90 % of the total nodules, more than 75 % of the aerial dry mass yield, and more than 45 % of the nitrogen content of the aerial biomass of plants, under field conditions. The elaboration and application of inoculants based on K2 and 1_2 would contribute to reducing the use of mineral fertilizers in soils affected by acidity.
Key words: Bradyrhizobium, stress, forages, growth.
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