Posibilidades del uso de Trichoderma harzianum en el biocontrol del marchitamiento y cancro bacteriano del tomate
; Moya, Paulina
; Monaco, Cecilia Ines Otros responsables
Fecha
02/2021
Editorial
Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales
Revista
Revista Facultad de Agronomía
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1669-9513
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Resumen
El presente trabajo consistió en evaluar la posibilidad del uso de dos cepas de Trichoderma harzianum (Th118 y Th5cc) sobre la manifestación del marchitamiento y cancro bacteriano del tomate en plantas de tomate platense cultivadas en invernáculo. Ambas cepas se aplicaron al sustrato de la plantinera en forma sólida (S) y líquida (L) en el momento de la siembra. Clavibacter michiganensis subsp. michiganensis se inoculó en el momento del desbrote mediante una pequeña incisión en el tallo principal entre la quinta y sexta hoja El ensayo se repitió durante dos años consecutivos. Para cada tratamiento se evaluaron los componentes del rendimiento (peso y número de frutos) y número de hojas afectadas. Si bien no se encontraron diferencias significativas entre tratamientos durante los dos años, el tratamiento Th118L es el que presentó menor cantidad de hojas afectadas y valores promedio más altos de peso de frutos. De acuerdo a los resultados obtenidos, se puede afirmar que la cepa de Trichoderma harzianum Th 118 aplicada como riego a los plantines en el momento de la siembra, podría ser incorporada como una buena alternativa dentro de un plan de manejo integrado de enfermedades en el cultivo de tomate platense.
The objective of this work was to evaluate the possibility of using two strains of Trichoderma harzianum (Th118 and Th5cc) against bacterial wilt and canker symptoms in tomato plants grown under greenhouse conditions. Both strains were applied on the substrate of the tomato seedling in solid (S) and liquid (L) form at sowing. Clavibacter michiganensis subsp. michiganensis was inoculated at the time of budding through a small incision in the main stem between the fifth and sixth leaves. The trail was repeated for two consecutive years. For each treatment, the yield components (number and weight of fruits) and number of affected leaves were evaluated. Although no significant differences were found between treatments during the two years, the Th118 L treatment was the only that presented the least amount of affected leaves and higher average values of fruit weight. According to results obtained, it can be stated that the Trichoderma harzianum Th118 strain applied as irrigation to the seedlings at the time of sowing could be incorporated as a good alternative within an integrated disease management plan in the tomato crops.
The objective of this work was to evaluate the possibility of using two strains of Trichoderma harzianum (Th118 and Th5cc) against bacterial wilt and canker symptoms in tomato plants grown under greenhouse conditions. Both strains were applied on the substrate of the tomato seedling in solid (S) and liquid (L) form at sowing. Clavibacter michiganensis subsp. michiganensis was inoculated at the time of budding through a small incision in the main stem between the fifth and sixth leaves. The trail was repeated for two consecutive years. For each treatment, the yield components (number and weight of fruits) and number of affected leaves were evaluated. Although no significant differences were found between treatments during the two years, the Th118 L treatment was the only that presented the least amount of affected leaves and higher average values of fruit weight. According to results obtained, it can be stated that the Trichoderma harzianum Th118 strain applied as irrigation to the seedlings at the time of sowing could be incorporated as a good alternative within an integrated disease management plan in the tomato crops.
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