Biological control of banana black Sigatoka disease with Trichoderma

Ciência Rural

Poholl Adan Sagratzki Cavero¹  Rogério Eiji Hanada¹  Luadir Gasparotto¹  Rosalee Albuquerque Coelho Neto¹  Jorge Teodoro De Souza¹ 

关键词: antagonists;    fungicide sensitivity;    mass production;    Mycosphaerella fijiensis;    antagonistas;    sensibilidade a fungicidas;    produção massal;    Mycosphaerella fijiensis;   

DOI  :  10.1590/0103-8478cr20140436

来源: SciELO

【 摘 要 】

Black Sigatoka disease caused by Mycosphaerella fijiensis is the most severe banana disease worldwide. The pathogen is in an invasive phase in Brazil and is already present in most States of the country. The potential of 29 isolates of Trichoderma spp. was studied for the control of black Sigatoka disease under field conditions. Four isolates were able to significantly reduce disease severity and were further tested in a second field experiment. Isolate 2.047 showed the best results in both field experiments and was selected for fungicide sensitivity tests and mass production. This isolate was identified as Trichoderma atroviride by sequencing fragments of the ITS region of the rDNA and tef-1α of the RNA polymerase. Trichoderma atroviride was as effective as the fungicide Azoxystrobin, which is recommended for controlling black Sigatoka. This biocontrol agent has potential to control the disease and may be scaled-up for field applications on rice-based solid fermentation

【 授权许可】

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