Fusariosis es una de las principales enfermedades que afectan el cultivo de tomate (Lycopersicon lycopersicum), siendo esta enfermedad causada por varias especies del genero Fusarium como Fusarium oxysporum f. sp. Lycopersici, Fusarium oxysporum f. sp. radicis-lycopersici, y Fusarium solani. En esta investigación se evaluó el efecto antagónico de una cepa de Trichoderma sp., sobre Fusarium sp., en plantas de tomate cultivadas en invernadero; además de comparar la acción biocontroladora de la cepa deTrichoderma sp con una alternativa química de control dada por el fungicida Benomilo y con una formulación comercial de Trichoderma viride. La cepa comercial de Trichoderma viride presentó una alta eficiencia protectora, con un 90% de sobrevivencia de plantas, la cual fue siempre superior a la cepade Trichoderma sp, que alcanzó al 70% de sobrevivencia. El fungicida benomilo ofre...

Fusarium is one ofthe main illnesses that affect the tomato crop (Lycopersicon lycopersicum) being this illness caused by several species of genre Fusarium como Fusarium oxysporum f. sp. Lycopersici, Fusarium oxysporum f. sp. radicis-lycopersici, y Fusarium solani. In this research the antagonistic effect of a Trichoderma sp. strain was evaluated, over Fusarium sp., in tomato plants cultivated in greenhouse; besides compare the biocontrol action of the Trichoderma sp strain with an alternative of control chemistry given for the fungicide Benomyl and with a commercial formulation of Trichoderma viride. The commercial strain of Trichoderma viride demonstrated a high protectress efficiency, with 90% of plants survival, which was always top to Trichoderma sp strain that reached 70% of survival. The benomyl fungicide offered a wide protection of tomate plants at fungus attack Fusarium sp bein...

Entomopathógenic fungi are is obliged parasites that cause diseases in several orders of insects, constituting an ecological alternative in the pest Management in different agricultural cultures. In the present study, patogenicity of the Beauveria bassiana, for his potential application like microbiological control agent of against of the third instar larvae of the Pumpkin Plant butterfly Diaphania hyalinata (lepidoptera: pyralidae) some of the important pest of Pumpkin Plant butterfly. Isolation evaluated by direct application of conidias suspensions of 106 and 1010/ml and mortality registered on larvae of Diaphania hyalinata, between 19% to 68% in the four day. In conclusion the Beauveria bassiana presents a great potential as a microbiological control of Diaphania hyalinata. Key words: microbiology control, Beauveria bassiana, Diaphania hyalinata, pumpkin plant.