ABSTRACT
Neem leaf aqueous extract sprays were evaluated alongside Cypermetrin for their efficacy to
ameliorate the symptoms and other pathogenic responses of infected Cowpea plants which were
mechanically inoculated with Cucumber mosaic virus.
The experiment was arranged in a
randomized complete block pattern with two treatments: the different rates of application of the
sprays and the number of time of application. The treatments were replicated three times giving a
total of 36pots with each pot having at least two plants. Plants sprayed with water served as
control.The result of the experiment showed that neem leaf aqueous extract spray was found
effective in the reduction of the associated symptoms and indeed an application of four times
was found comparable with inorganic cypermethrin in terms of reduced infection symptoms and
yields.