In vitro determination of LD50 for AgriX365 on corn strain of Spodoptera frugiperda

Fall armyworm, Spodoptera frugiperda, is currently a major and invasive pest that threatening global maize production food security especially in sub–Saharan Africa. Its tolerance to several available synthetic pesticides has led research into novel management strategies. An vitro laboratory bioassay was conducted at Bindura University of Science Education determine the LD50 for AgriX365, botanical pesticide, complete randomised design. There relative dose-dependent response mortality rates S. frugiperda from 0.5ml/L 2ml/L AgriX365. The logistic function Probit, P, calculation indicated an =1.25ml/L (1250 ppm); y=0.5998x+4.2749; R2=0.9979) standard or recommended field rate high significant difference between mean per cent treated larvae untreated ones (p