Uso de Bacillus subtilis para el control de la sigatoka negra (Micosphaerella fijiensis) en el cultivo de banano en el sector de La Troncal - Cañar.

Abstract

This study consisted of the evaluation of Bacillus subtilis for the control of Black Sigatoka (Pseudocercospora fijiensis) in banana cultivation. The experiment was carried out on the farm of Ab. Luis Castro located in the Troncal sector, Cañar. The experimental design used was the Randomized Complete Blocks Experimental Design (DBCA) with five treatments and four blocks. The treatments were based on different doses of Bacillus subtilis (BS) (1 − 2 × 108 𝐶𝐹𝑈) of which were T1 (0.5 L / ha), T2 (1 L / ha), T3 (1.5 L / ha) ha), T4 (2 L / ha), and T5 (conventional control). The variables that were studied were total leaves, streak-free leaves (HLE) and the severity index. The statistical analyzes performed were: analysis of variance (ANDEVA) and then Duncan's test both at 5%. The results determined that the T4 treatment, with doses of 2 L / has obtained the best results in all the variables with the total number of leaves at 0, 10 weeks and the harvest with results of 13, 11 and 7 total leaves. In relation to HLE, T4 obtained 8 and 6 streak-free leaves at 0 and 10 weeks respectively. Finally, the severity index was optimal for T4 with a value of 18.01%. The results suggest that the dose of 2 L / ha of BS can be a good complement in the management of black Sigatoka in banana.