EFFICACY OF FUNGI TRICHO (Trichoderma spp.) AND CHEMICAL FUNGICIDES FOR THE CONTROL OF Botrytis sp., IN BLACKBERRY

• DOI: https://doi.org/10.22533/at.ed.813442408059

• Palavras-chave: Blackberry, Botrytis sp., Trichoderma spp., biological control.

• Keywords: Blackberry, Botrytis sp., Trichoderma spp., biological control.

• Abstract: Mexico is considered a world leader in blackberry (Rubus spp.) production due to its high yields. However, this crop has production limitations, especially post-harvest diseases caused by Botrytis sp. that cause blackberry fruit rot and cause high commercial losses. Biological control is an alternative for its management and is currently a sustainable practice. In this research, the use of chemical fungicides and the product Fungi-Tricho, as a biological fungicide, was proposed at laboratory and field levels for the control of damage caused by Botrytis sp. The pathogen was identified according to microscopic and macroscopic characteristics. For the control of Botrytis sp. eight active principles were evaluated, in addition to a biological product, using the dosage recommended by the manufacturers by means of the poisoned culture medium technique. Using the dual culture technique, under laboratory conditions, Botrytis sp. was placed against Trichoderma spp. Under field conditions, an experiment was established in Zirimicuaro, municipality of Ziracuaretiro, Mexico. Under in vitro conditions it was found that the active ingredients Captan, Fenhexamid and Boscalid + Pyraclostrobin had better control of Botrytis sp. in each of the areas evaluated. In addition, it was obtained that Trichoderma spp. had an antagonistic control effect of 60%. Likewise, the results obtained in the field indicated that the treatments with Fenhexamid and Boscalid + Pyraclostrobin had an incidence of Botrytis sp. below 35%; while, in the treatments with Captan, Ciprodinil + Fludioxinil and Trichoderma spp. produced a statistically significant control (P£0.05).