INCIDENCE OF FUNGAL FOLIAR BLIGHTS ON DIFFERENT MANGO CULTIVARS IN SOKOTO METROPOLIS

Abstract

A field survey was carried out to investigate the incidence of fungal leaf blights disease of
mango (Mangifera indica) in Sokoto metropolis using random sampling methods. Survey was
carried out in six mango growing areas; Arkilla, Dambuwa, Gagi, Illela, More and the permanent
site of the Usmanu Danfodiyo University, Sokoto areas. A total of 125 healthy and diseased
plant leaves were collected by detached technique. The diseased leaves were taken to the
laboratory for culture, isolation, and identification of pathogens. Disease incidence was
determined using disease index and severity scale of 0-4 rating. Results from isolation revealed
Colletotrichum gloesporioides and other pathogenic fungi. The incidence of leaf blight was
greater in UDUS area with percentage of occurrence of (56.75%) while it was lower in Arkilla
area (31.65%). In relation to the disease incidence in different mango varieties, the incidence was
higher with Mai bindiga Mango variety (78%) whereas, improved variety was the least infected
(25.8%). Therefore, the statistical analysis conducted showed that at 5 % disease severity from
the study was not significant with mango location but it was with Mango variety. Anthracnos
caused by C. gloesporioides was severe due to cultural practices in the areas. Enlightening
farmers on proper cultural practises aimed at boosting mango yield and reducing pathogen
invasion is recommended.