AVALIAÇÃO “in vivo” DE BACTERIÓF AGOS COMO AGENTES DE CONTROLE BIOLÓGICO DA MANCHA BACTERIANA DO TOMATEIRO

Abstract

Tomato is one of the most important crops in the world. With all its importance, it still suffers from the attack of several pathogens. Bacterial spot is one of the most important diseases of culture due to its severity and lack of effective methods. Bacteriophages are an alternat ive biological control for the disease. The objective of this work was to evaluate the effectiveness of bacteriophages in controlling the disease in different application regimes. Two isolates from the Instituto Federal Goiano Campus Morrinhos collection were used, being IFGOB4 and IFGOB15 evaluated isolated and in mixture. Application regimens were 1) one application 48h before pathogen inoculation; 2) one application 48h after pathogen inoculation; 3) one application 48 hours before and one 48 hours after pathogen inoculation; 4) one 48h before and two applications 48h and 120h after pathogen inoculation. Bacteriophages were compared with an untreated control resulting in 13 treatments in a factorial scheme (3 x 4 + 1). The design was in randomized blocks. All treatments, in the different evaluations, provided less severity in relation to the control.