The entomopathogenic nematode,Steinernema carpocapsae,was evaluated for control of the potato tuber moth,Phthorimaea operculella,under laboratory conditions.We evaluated different concentrations of S.carpocapsae for c...The entomopathogenic nematode,Steinernema carpocapsae,was evaluated for control of the potato tuber moth,Phthorimaea operculella,under laboratory conditions.We evaluated different concentrations of S.carpocapsae for control of 2 nd,3 rd,and 4 th instar P.operculella.The median lethal concentration(LC50)of S.carpocapsae infective juveniles(IJs)to 2 nd,3 rd and 4 th instar larvae of P.operculella was 200,363,181 IJs mL–1,respectively.With the extension of treatment time,the cumulative mortality increased for 2 nd,3 rd,and 4 th instar larvae and pupae of P.operculella.Fourth instars were the most susceptible for all observation periods.Therefore,our results suggest that S.carpocapsae could be an effective biological control agent for P.operculella.展开更多
This paper is based on a presentation made to the International Conference of Integrated Pest Management (IPM), Guangzhou, June, 1998. It is intended to stimulate thinking, discussion and debate over the principles an...This paper is based on a presentation made to the International Conference of Integrated Pest Management (IPM), Guangzhou, June, 1998. It is intended to stimulate thinking, discussion and debate over the principles and strategies of IPM. Different visions on IPM and its future development can be found around the world, and even within countries. In this essay the author began by reviewing those visions of IPM, and then to suggest what common elements they share when IPM has proven to be a success. Finally the author discusses some outstanding challenges in successful IPM,in particular farmer-participatory research in IPM and making IPM technology available to farmers.Farmer-particeipatory IPM will be an essential element of the success of IPM in many regions and crops in the coming decades, and particularly with smallholders.展开更多
基金supported in part by the National Key Research and Development Program of China (2018YFD0200802)
文摘The entomopathogenic nematode,Steinernema carpocapsae,was evaluated for control of the potato tuber moth,Phthorimaea operculella,under laboratory conditions.We evaluated different concentrations of S.carpocapsae for control of 2 nd,3 rd,and 4 th instar P.operculella.The median lethal concentration(LC50)of S.carpocapsae infective juveniles(IJs)to 2 nd,3 rd and 4 th instar larvae of P.operculella was 200,363,181 IJs mL–1,respectively.With the extension of treatment time,the cumulative mortality increased for 2 nd,3 rd,and 4 th instar larvae and pupae of P.operculella.Fourth instars were the most susceptible for all observation periods.Therefore,our results suggest that S.carpocapsae could be an effective biological control agent for P.operculella.
文摘This paper is based on a presentation made to the International Conference of Integrated Pest Management (IPM), Guangzhou, June, 1998. It is intended to stimulate thinking, discussion and debate over the principles and strategies of IPM. Different visions on IPM and its future development can be found around the world, and even within countries. In this essay the author began by reviewing those visions of IPM, and then to suggest what common elements they share when IPM has proven to be a success. Finally the author discusses some outstanding challenges in successful IPM,in particular farmer-participatory research in IPM and making IPM technology available to farmers.Farmer-particeipatory IPM will be an essential element of the success of IPM in many regions and crops in the coming decades, and particularly with smallholders.
