In-vitro evaluation of chemicals/antibiotics against the growth of Tip over disease of banana (Erwinia chrysanthemi)

Abstract

Among the chemicals tested, copper oxychloride at 4000 ppm was found to be effective in inhibiting the growth of the pathogen (23.16mm) followed by 3000 ppm of copper oxychloride (21.33mm) and 2000 ppm of copper oxychloride (17.33mm). Among the antibiotics tested, streptocycline1000 ppm was found to be effective in inhibiting the growth of the pathogen (21.50mm) followed by 750 ppm of streptocycline produced with an inhibition zone of 20.16mm and 500 ppm of streptocycline produced with an inhibition zone of 19.33mm. Combination of antibiotics and chemicals tested, streptocycline + copper oxychloride produced the highest inhibition zone of 24.75mm at 500 + 3000 ppm followed by streptocycline + copper oxychloride produced an inhibition zone of 19.75mm at 500+1000 ppm and streptocycline +copper oxychloride produced an inhibition zone of 19.37mm at 500+2000 ppm.