In vitro control of Colletotrichum lindemuthianum by Trichoderma spp. and in vivo with Alternative Products

Abstract

Beans (Phaseolus vulgaris) are extremely important because it is included daily in the diet of themajority of the Brazilian population. Several factors negatively affect the productivity of this crop, especially diseases.One of the main ones is anthracnose (Colletotrichum lindemuthianum), which can cause total production damage and depreciation of the final product. The study and development of new strategies for integrated anthracnose management can reduce the cost of production and consequently reduce environmental impacts. The objective of this work was to evaluate the efficiency of Trichoderma fungi in in vitro tests (antagonism, production of volatile and non-volatile compounds) for control of C. lindemuthianum and to evaluate the efficiency of endophytic fungi, salicylic acid, copper phosphite, acibenzolar-S-methyl (ASM) and fungicide for anthracnose control in greenhouse bean plants. Anthracnose was controlled in bean plants with the use of alternative products. The endophytic fungi Trichoderma viride and Trichoderma tomentosum inhibited C. lindemuthianum mycelial growth in the three in vitro tests. In greenhouse, T. viride, T. tomentosum, salicylic acid, ASM and fungicide were effective, but copper phosphite was not efficient in controlling anthracnose.