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Cultivos Tropicales

versión On-line ISSN 1819-4087

Resumen

Effect of bioactive products in biofertilized bean (Phaseolus vulgaris L.) plants. cultrop [online]. 2016, vol.37, n.3, pp. 165-171. ISSN 1819-4087.  http://dx.doi.org/10.13140/RG.2.1.1077.0165.

Biofertilizers use in agriculture allow to ensure culture productivity, reducing chemical fertilizers and cost. Azofert® is a bioprepared composed by rizobia strains, with a positive effect on biological nitrogen fixation. Biobras-16 and Quitomax are natural bioactive products, considered as biostimulants which help plant to face various kinds of stresses and increase yields; however there is no information about the effect of the application of these biostimulants to seeds before biofertilizer inoculation on bean crop. The objective of this work was to determinate the Biobras 16 and Quitomax effect on nodulation and growth of common bean biofertilized with Azofert®. Two concentrations of Quitomax and Biobras-16 were applied on seeds the day before sowing and with Azofert® at the sowing moment, then they were put on Ferralític Red Lixiviated típic éutrico soil. 35 days after sowing were determined in ten plants by treatment: number and dry weight of nodules, shoot and root length and dry weight. Determination of leaf chlorophyll, nitrogen and phosphorus were also made. The results showed that application of specific concentration of Biobras-16 and Quitomax plus Azofer®t inoculation; stimulate, in a general way, the growth of plants; mainly with Biobras-16, which also increased leaf chlorophyll and nitrogen contents

Palabras clave : brassinosteroids; growth; leguminous; chitosan; rhizobia.

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