Garlic ethanol-extract's deterrent effect on Myzus persicae(sulzer)and anti-feeding effect on Spodoptera litura(Fabricius)for tobacco fields

The ethanol-extract of garlic(Allium sativum)was used in an indoor experiment to demonstrate its deterrent effect on Myzus persicae(sulzer),as well as the anti-feeding activity on Spodoptera litura(Fabricius).Considerable deterrent and anti-feeding effects were found.Higher deterrent rates on M.persicae were 68.96% to 100.00% in 72 h when the extract concentration was 70 g•L-1 or 90 g•L-1.High anti-feeding rates on S.litura were 67.54% to 96.74% in 24 h when the extract concentration was 70 g•L-1 or 90 g•L-1.The results suggested that garlic's ethanol-extract could be applied to curb pest insect problems of M.persicae and S.litura in the tobacco fields.