SYMPTOM DEVELOPMENT AFTER ARTIFICIAL INOCULATION OF BOTRYODIPLODIA THEOBROMAE, A POSSIBLE CAUSAL ORGANISM TO QUICK DECLINE IN MANGO TREES

The fungus, Botryodiplodia theobromae is one of the causal agents of quick decline which was artificially inoculated to mango varieties to see quick decline symptoms. The most famous varieties, i.e. cv. Ratol-12, black chaonsa, white chaonsa, Fajri, Dosehri, Langra, Sindhri and Summer Bahisht were established in earthen pits under complete randomized design (CRD) and was observed up to three months for their establishment. Three months after transplanting, B. theobromae was artificially inoculated in the test plants which showed that Dosehri variety was comparatively tolerant to the disease as compared to others. Regarding the appearance of percent disease symptoms, Ratol-12 showed the highest disease symptoms followed by Langra, Fajri and then black Chounsa. So it is concluded that B. theobromae is not the major causal organism of this disease and other sources may also be involved in the development of disease.