Study of Biological Activity to Plutella xylostella Using Substance of Synedrellanodiflora(Linn.)Gaertn

Using 6 different Polarity extract substance of Synedrellanodiflora(Linn.)Gaertn from strong to weak,biological activity about Plutella xylostella(L.)were mensurated.The results showed that Synedrellanodiflora(Linn.)Gaertn extracts substance haved strong antifeeding activity and oviposition against the larvae of Plutella xylostella(L.),which it's rate can be at the top of 90.76% and 73.41%.