Control of Sclerotínía sclerotíorum (lib) de Bary in Chrysanthemum and snap bean with different isolates of Tríchoderma and with fungicides
The objetive of this study was to select. increase and apply sorne isolates of Tríchoderma, and to evaluate their antagonistic activity against Sclerotínía sclerotíorum in vitro and in the field in chrysanthemum and snap beans. It was also intended to evaluate the efficiency of some fungicides in the control of those diseases. The isolates T10 of Tríchoderma víríde and T12 of Tríchoderma harzíanum were selected as the best antagonists for the greatest inhibition of mycelial growth. influence in the sclerotia production and sporulation of the pathogen. The isolates with a better antagonistic capacity were evaluated in the field. Significant diffarences were observed in the antagonistic effect between the isolates of Tríchoderma. In field experiments the part of the plant most frequently affected was the upper part so that the application of fungicides should be targeted mainly to that plant part. The etficiency of application of. the fugicides ferbam, carbendazim and vizclozolin was also observed. The best control in the chrysanthemum trials was observed with a soil application of carbendazim during the first week after planting followed by five weekly applications to the foliage after thesixth week. When the best chemical treatment was comparad with the best antagonists differences between the two types of treatment were not observed.
| Main Authors: | , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias Agrarias
1990
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| Online Access: | https://revistas.unal.edu.co/index.php/agrocol/article/view/21004 |
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