Effect of Sowing Date on the Incidence and Severity of Okra Mosaic Tymovirus

Abstract

ABSTRACT The effect of sowing date (June 30th, July 15th and July 30th) on the incidence of okra mosaic Tymovirus (OMV) was investigated at Samaru, Northern Guinea Savanna Zone of Nigeria. The average number of virus-vectoring beetles caught per plot decreased with delay in sowing, while percentage of OMV-infected plants increased with delay in sowing. Disease severity also increased with delay in sowing while fruit yield decreased.