Open Access Research Paper Views (531) Download (36) Evaluation of varying concentrations of neem seed extracts in the control of cowpea scab (Sphaceloma SP.) Gurama Umar Abubakar Int. J. Biosci.13( 6), 146-154, December 2018. DOI: http://dx.doi.org/10.12692/ijb/13.6.146-154 Key: CowpeaIncidenceNeemScabSeverity Details