Field experiments were conducted in Isabela, Puerto Rico to determine the efficacy of oxamyl and phenamiphos for control of nematodes (Rotylenchulus reniformis and Meloidogyne incognita) and the pepper weevil (Anthonomus eugenii) in Capsicum annuum and C. frutescens. Significantly higher yields (number and weight of fruits) and 81% and 85% nematode control in C. annuum and C. frutescens, respectively were obtained from plots treated with 1.12 kg/ha (a.i.) of oxamyl. Plots of Capsicum spp. treated with the higher rate of oxamyl showed a significantly lower percentage of fruit damaged by the weevil as compared to other treatments. Capsicum annuum proved to be more susceptible to the weevil than C. frutescens, whereas C. frutescens was more susceptible to Phytophthora. Most of the damage to the plant and reduction in quality of C. frutescens fruits were caused by Phytophthora spp. and Myzus persicae. The higher rate of phenamiphos (2.2 kg/ha) produced a significantly lower root gall ind
