Insecticidal toxicity of two bruchid-resistant cowpea cultivar powders as cowpea seed protectants against Callosobruchus maculatus(Fab.)(Coleoptera:Chrysomelidae)

作     者：Kayode D.Ileke 

作者机构：Department of BiologySchool of ScienceFederal University of TechnologyOndo StateNigeria 

出 版 物：《Food Quality and Safety》 (食品品质与安全研究（英文版）)

年 卷 期：2019年第3卷第1期

页      面：35-39页

核心收录：

学科分类：0832[工学-食品科学与工程（可授工学、农学学位）] 1004[医学-公共卫生与预防医学(可授医学、理学学位)] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：bruchid resistant cultivar MIT04K-399-1 cultivar MIT07K-299-92 Callosobruchus maculatus Vignia unguiculata 

摘      要：Toxicity of bruchid-resistant cultivars MIT04K-399-1 and MIT07K-299-92 powders as cowpea protectants against Callosobruchus maculatus(Fab.)was investigated at an ambient temperature of 28±2°C and a relative humidity of 75±5%.Their efficacy was tested at dosage,0.5,1.0,1.5,2.0,2.5,and 3.0 g/20 g of cowpea seeds on adult mortality,oviposition,adult emergence,progeny development,seed damage,weight loss,and Beetle Perforation Index(BPI)by cowpea *** result showed that toxicity of the bruchid-resistant cowpea cultivar powders on adult bruchid is dosage-and *** a dosage of 3.0 g/20 g,cultivars MIT04K-399-1 and MIT07K-299-92 powders achieved 70%and 72.5%lethal effect on adult *** after 4 days of treatment,*** and percentage adult emergence of *** decrease with an increase in powder ***,reduction in progeny development of *** increases with an increase in powder *** mean number of adult emergence decreased at 2 g/20 g,2.5 g/20 g and 3 g/20 *** MIT04K-399-1 and MIT07K-299-92 powders significantly affected egg *** MIT07K-299-92 powder was more effective against oviposition and adult emergence at higher concentrations than MIT04K-399-1 powder,an effect that was not significantly different(P0.05)from each *** BPI of 9.1 and 6.2 was recorded on cowpea seeds treated with MIT04K-399-1 and MIT07K-299-92 powders at a dosage of 3 g/20 g,*** fear of residual toxicity on nontargeted organisms is not associated with the use of resistant cowpea cultivars as seed *** farmers are familiar with the technology involved in the preparation and application of powders as *** of bruchid-resistant cowpea cultivars MIT04K-399-1 and MIT07K-299-92 powders into the management of coleopteran pests will ensure availability of viable seeds for future farming in developing nations such as Nigeria.