Incidence of Nonpersistently Transmitted Viruses in Pepper Sprayed with Whitewash, Oil, and Insecticide, Alone or Combined

Several methods of protecting pepper (Capsicum annuum) against aphid-borne virus diseases were evaluated in field experiments for 6 yr. Results of weekly sprays of the insecticide pirimicarb (Pirimor) or bifenthrin (Talstar) at 0.1% or of a mixture of pirimicarb at 0.1% and whitewash (Yalbin) at 10% did not differ from those of unsprayed controls. Applications of mineral oil (Virol) at 1% or of whitewash (Yalbin or Loven) at 10% reduced the incidence of virus infection by about 40%. The best control was achieved with Yalbin combined with bifenthrin or mineral oil, which reduced virus infection by about 60%