Abstract

LOPEZ DAVILA, Edelbis et al. Agronomic effect of the biosolid in tomato cultivation (Solanum lycopersicum): biological control of Rhizoctonia solani. cultrop [online]. 2017, vol.38, n.1, pp. 13-23. ISSN 1819-4087.

In this paper the agronomic effect of effluent from the anaerobic digestion of pig manure in cultivating tomato(Solanum lycopersicum) and its effect as a biological control of plant pathogen Rhizoctonia solani are determined. For this, a study was conducted compared with bioproducts and recognized antagonists (vermicompost leachate, efficient microorganisms, Trichoderma harzianum and Lecanicillium lecanii). Experiments to determine the effect agronomic of the effluent were performed on a laboratory scale and field. The properties of the effluent as biological control were tested in vitro using both crude effluents as filtering. Also in PDA culture medium, superficially treated at different concentrations of the effluent, restrictive activity of possible metabolites on the development of plant pathogen Rhizoctonia solani was analyzed. The results showed a significant effect of effluent on soil and development of tomato plants, both laboratory scale and field (greater foliage, increase in the number of flowers, fruits and plant height), especially with application of the effluent 5 %. Regarding the effect on plant pathogens Rhizoctonia solani a significant reduction in the diameter of the colony, compared to the control and the other antagonists used was obtained. The surface treatment of the culture medium with concentrations digested 15, 20 and 25 % reduced the development of phytopathogen to over 70 % in only 24 h

Keywords : biocontrol; biofertilizers; Biogas; vegetables.

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