Occurrence, Distribution And Alternative Hosts Of Cassava Viruses In Kano And Katsina States, Nigeria

📄 Project Abstract

Cassava mosaic virus is said to occur in all growing areas in Africa and a substantive land area is devoted to cassava in Kano and Katsina State of Nigeria. There is also the need to investigate if Cassava congo sequivirus recently reported in Kaduna and Sokoto States occurs in the States. Field surveys were conducted during the 2016 dry and wet seasons in three local government areas each of Kano and Katsina States of Nigeria to determine the occurrence, distribution and alternative hosts of viruses of cassava (Manihot esculenta Crantz). A total of 18 cassava farms were surveyed in the twoStates (nine in each State). Sampling was done in 5 x 5 m2 quadrats in each field of the three selected fields per Local Government Area. Cassava plants with mosaic, distortion, stunting, chlorosis and necrotic symptoms on leaves, as well as, those with no obvious virus disease symptoms were sampled. A total of twenty weed samples, were also collected during both dry and wet seasons andanalysis was c...