Resumen

CARDONA, R  y  RODRIGUEZ, H. Effects of Trichoderma harzianum fungus on the incidence of the charcoal rot disease on sesame. Rev. Fac. Agron. [online]. 2006, vol.23, n.1, pp.44-50. ISSN 0378-7818.

Abstract The effect of the Trichoderma harzianum fungus on the incidence of the charcoal rot disease in sesame was studied. The ways of using Trichoderma harzianum fungus, the application of the seed; application in clay granules and application in rice grains were evaluated. The evaluation was carried out for three years, on a plot infested naturally, located at the experimental field Turén, and for a year on infection beds located at INEA, Portuguesa and artificially inoculated with 400 sclerotium of M. phaseolina / g of soil. The variance analysis combined for the three years of the essay did not show statistical differences between years neither between treatments, but it did between the interaction year x treatment, subsequently evaluating each year separately obtaining an inconsistency in results by the absence of statistical differences between treatments for each year. The same result was observed in the analysis of the information obtained on the infection beds. These results do not show any difference of T. Harzianum on the incidence of the charcoal rot, also evidenced the necessity of evaluating cultural practices that might improve the environmental conditions that allows the fungus T. Harzianum to develop all its antagonist capacity

Palabras clave : Biologic control; Sesamum indicum; Macrophomina phaseolina.