Influence of the production season on the microbiological stability of Azofert®-S biofertilizer
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Abstract
The objective was to evaluate the concentration of strain Bradyrhizobium elkanii ICA 8001 strain in Azofert®-S inoculants produced at different year seasons. Inoculants were produced in the four seasons of the year and stored at room temperature. Purity and bacterial strain concentration were determined every 30 days for 180 days. Inoculants produced in fall and winter maintained a strains concentration 108 CFU mL-1 for 120 days, which is optimal for field use. Knowing the effectiveness time of Azofert®-S would establish an inoculant production strategy that ensures the biofertilization of soybean.
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