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Journal of soil science and plant nutrition

versión On-line ISSN 0718-9516


BORGES CHAGAS, L.F et al. Evaluation of the phosphate solubilization potential of Trichoderma strains (Trichoplus JCO) and effects on rice biomass. J. Soil Sci. Plant Nutr. [online]. 2015, vol.15, n.3, pp.794-804. ISSN 0718-9516.

This study aims to evaluate the phosphate solubilization potential of the Trichoderma spp. isolates found in the commercial product Trichoplus JCO. The strains were isolated, molecularly identified and grown in vitro. The soluble phosphate concentration was quantified at 3, 6, 9 and 12 days after transplanting. Rice was inoculated with the Trichoderma strains in greenhouse conditions with 10 to 60 x108 conidia per gram of rice and then planted. At 30 and 45 days after planting (DAP), plant growth characteristics were determined. The phosphate concentrations of most of the Trichoderma strains showed a general trend of increasing from days 3 to 9. At 30 DAP, Tr. Harz and Tr. TSM had a higher significant difference. At 45 DAP, the rice inoculated with Tr. Harz, Tr. Euc and Tr. TSM had the greatest increase in the total dry matter compared with the control. The rice inoculated with Tr. Euc and Tr. TSM had the best relative efficiencies, and the rice inoculated with Tr. Din and Tr. TSM demonstrated the highest P-UEF. Finally, the rice inoculated with Tr. Harz (T. asperelloides), Tr. Euc (T. harzianum) and Tr. TSM (T. harzianum) had the highest efficiency in phosphate solubilization with increases in rice biomass.

Palabras clave : Phosphate solubilization; rice; biomass; Trichoderma; greenhouse.

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