Yahuza Lurwanu, S E Alao, Ibrahim Tijjani, Mustapha Sunusi, Afiniki Bawa Zarafi



Assessment on incidence and severity of mango leaves and fruits anthracnose was conducted in four mango orchards during 2014 mango growing season in four agro-ecological zones in Nigeria. Ten mango varieties were assessed from the orchard of Niyya farm (Southern guinea savannah), six from the Institute for Agricultural Research (IAR), Zaria  orchard (Northern guinea savannah) and five each from Yanbukar and Dabiran mango orchards (Sudan and Sahel savannah respectively). The disease incidence and severity on leaves and fruits on the surveyed orchard significantly varied (P≤0.05). Highest incidence and severity of the disease on leaves, in Niyya orchard was recorded on variety Temo (47.20% and 55.80%) and the least was recorded on variety Dankamaru (19.20 % and 40.00 % ). Variety peter recorded highest incidence and severity on fruits (82.00 % and 48.40 %) the least was recorded on Maya. At IAR, highest incidence and severity on leaves (37.60 % and 52.40 %) was recorded on variety Alphonso, lowest (17.00 % and 40.80 %) was obtained on variety Temo. Kanbiri had the highest incidence on fruits (18.00 %) and Binta sugar recorded higher severity on its fruits (41.20 %) and the lowest incidence and severity on fruits (11.60 % and 24.80 %) was recorded on variety Keith. In Yanbukar orchard, Bakin aku had the highest incidence and severity on leaves (40.00 % and 51.40 %) and the lowest (8.80 % and 36.60 %) was recorded on variety Soto. There was no significance difference between the incidence and severity of the disease on fruits among the varieties in Yanbukar orchard. At Dabiran, variety Dangaftare had the highest incidence and severity on leaves (38.40 % and 49.40 %) and lowest (37.80 % and 10.40 %) recorded on Maijijiya. The disease parameters on fruits were higher on variety Dangaftare (42.00 % and 36.40 %) with Furdu recording the least (11.60 % and 24.00%).

Keywords: Mango anthracnose, Colletotrichum gloeosporioides, incidence, severity


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