Abstract

ZULUAGA AMAYA, Catalina María; PATINO HOYOS, Luis Fernando  and  COLLAZOS VILLA, Juan Carlos. INTEGRATION OF INDUCED RESISTANCE WITH CHITINOLYTIC BACTERIA IN BLACK SIGATOKA CONTROL (Mycosphaerella fijiensis Morelet) IN BANANA. Rev. Fac. Nac. Agron. Medellín [online]. 2007, vol.60, n.2, pp.3891-3905. ISSN 0304-2847.

The effect of resistance elicitors and chitinolytic bacteria was evaluated on Black Sigatoka control in banana plants, in field conditions in Urabá-Colombia. Acibenzolar-s-metil (ASM) (20 cm³ • ha^{- 1 a.i.) and salicilyc acid (SA) (20} cm³ a.i.ha^-1) were used in rotation and mixture with conventional fungicides, and in mixture with chitinolytic bacteria isolated from banana phyllosphere. Biological fungicide Biofun® ( 1,5 L • ha^-1) de p.c. was also tested in rotation and mixture with ASM. When fungicides were in rotation and in mixture with ASM, an increase of 50% of disease control was obtained, represented by lower levels of area under curve of variables severity index (IS) and higher of healthy leaves at flowering. The treatments based on SA in rotation and mixture with conventional fungicides, as well as Biofun^®  in rotation and mixture with ASM, resulted statistically similar to control showed by conventional system control, which disclosed a reduction from 46 -100% of quantity of conventional fungicides used in black Sigatoka control.

Keywords : Biological control; salicylic acid; acibenzolar-s-metil; lytic bacteria; Biofun.

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