Investigation of the combination of neem seed oid and rotenone extract on the inhibition of Plutella xylostella on Brassica juncea

Abstract

The chemical pesticides being used today have adverse effects on human health and the environment. So ,they are strictly controlled, especially for export agricultural products. Since then, the search for pesticides derived from natural plants to replace chemical drugs on the market have extensively done. In this study, the combination of neem seed oil and rotenone extract on the inhibition of Plutella xylostella on Brassica juncea was investigated. The results showed that the combination of neem seed oid and rotenone extract has a significantly high insecticidal effect in vitro condition, the effectiveness of which is proportional to the treatment concentration, the 70% inhibitory concentration of Plutella xylostella was LC 70 = 0.0130 %. In green house model , it was found that after the first treatment, the efficiency of Plutella xylostella control reached 38.31% and on the 7th day after the second treatment, the insecticide efficiency reached 84.81%. These results showed the high potential application of the