The insecticidal or fungicidal activities of several plants were screened. The active ingredient of the highest toxic plant was isolated by activity direction.The structure of the ingredient was identified.
1.The insecticidal activity of extracts from Actinidia chinensis and A. kolomikta against third instar larvae of the diamondback moth,Plutella xylostella(L.)was evaluated under laboratory conditions.The extracts of A. chinensis were prepared using six solvents,among which acetone was found best...