Journal of Entomology1812-56701812-5689Asian Network for Scientific Information10.3923/je.2008.148.155NderituJ.H. KasinaM.J. NyamasyoG.N. WaturuC.N. AuraJ. 3200853This study was conducted to measure economic benefit of using different spray schedules to control thrips on French beans. It was done using different spray regime scenarios of two insecticides: Lambda cyhalothrin (Karate 1.75% EC) and Methiocarb (Mesurol 500 SC). It is shown that increasing the number of sprays results to lower thrips infestations, explaining why local farmers practice calendar spraying. However, this lowers the net returns obtained from French bean sales. In contrast, application of one to two sprays maintains thrips below economic damage and provides the highest net returns. It is suggested that farmers should only use the effective insecticide after noting a density of three thrips per flower. This is possible if farmers embrace monitoring of thrips buildup on French beans.]]>Alghali, A.M.,199213725730Amatobi, C.I., 1994Vigna unguiculata (L.) Walp.) in the Sudan savanna of Nigeria.]]>401317Amatobi, C.I.,1995411418Bal, A.B., 1991Vigna unguiculata (L.) Walp.) in Senegal.]]>37363367Cardona, C. and P. Corrales, 19921992pp: 88Denholm, I., M. Cahill, T.J. Devine and G.D. Moures, 1998Bemisia tabaci.]]>35317571767Dent, D., 20002nd Edn.,pp: 366pp: 366Herron, G.A. and G.C. Gullick,2001Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) causes the abandonment of pyrethroid chemicals for its control.]]>302126Jensen, S.E., 2000Frankliniella occidentalis.]]>5131146Kasina, J., J. Nderitu, G. Nyamasyo, F. Olubayo, C. Waturu, E. Obudho and D. Yobera, 2006Phaseolus vulgaris (Fabaceae).]]>26121125Kibata, G.N. and J.J. Anyango, 19961996pp: 6268Larsson, H., 2005Limothrips denticornis in rye, triticale and winter barley.]]>129386392Marquini, F., R.N.C. Guedes, M.C. Picanco and A.J. Regazzi, 2002126550556Mukankusi, C., E. Adipala, S. Kyamanywa, G. Epieru, H. Warren, H.R. Wilson and V. Odeke, 199996981Nabirye, J., P. Nampala, S. Kyamanywa, M.W. Ogenga-Latigo, H. Wilson and E. Adipala, 200322911915Nderitu, J.H., C.N. Waturu, F. Olubayo, J. Aura and J. Kasina, 20012001Nderitu, J.H., E.M. Wambua, F.M. Olubayo, J.M. Kasina and C.N. Waturu, 2007Phaseolus vulgaris L.) in Kenya by combination of insecticides and varietal resistance.]]>4469473Pablo, B., Q. Vicente, C. Josefina, T. MarĂa, M. Alberto and E.J. Pedro, 2007Frankliniella occidentalis (Pergande), in greenhouses of South-Eastern Spain.]]>63682687Reichelderfer, K.H., G.A. Carlson and G.A. Norton, 19841984Robb, K.L., J. Newman, J.K. Virzi and M.P. Parella, 19951995pp: 341-346pp: 341-346Salifu, A.B., 1992Megalurothrips sjostedti (Trybom) (Thysanoptera: Thripidae) with reference to economic injury levels on cowpea (Vigna unguiculata Walp).]]>106451459Shipp, J.L., K. Wang and M.R. Binns, 20009317321740Stewart, R.K. and A.R. Khattat, 1980Lygus lineolaris (Hemiptera (Heteroptera): Miridae), on green beans in Quebec.]]>112306310