Agronomic effect of the biosolid in tomato cultivation Solanum lycopersicum): biological control of Rhizoctonia solani
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Abstract
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.
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