Dear editor,Mosquito-borne diseases,viz.,malaria,filariasis,dengue hemorrhagic fever,chikungunya,Japanese encephalitis etc.,created huge impact on humans over the world,and the chemical insecticides remain the mainsta...Dear editor,Mosquito-borne diseases,viz.,malaria,filariasis,dengue hemorrhagic fever,chikungunya,Japanese encephalitis etc.,created huge impact on humans over the world,and the chemical insecticides remain the mainstay of effective control.But,indiscriminate and rampant use of the chemical insecticides in controlling mosquito vectors,in order to prevent diseases vectored by them,has resulted problems related to the adverse environmental effects for their(insecticides)potential toxicity,high operational cost,community acceptance,and the development of insecticide resistance among the vectors.The factors mentioned above prompted the search for new means of control strategies.Currently,the botanicals(viz.,plant extracts,essential oils and phytochemicals)with mosquitocidal potential展开更多
[Objective] The paper was to explore safe fungicides with high efficiency and long persistence against eucalyptus purple blotch. [Method]10%Difenoconazole WG,500 g /L thiophanate-methyl SC and 50% carbendazim WP were ...[Objective] The paper was to explore safe fungicides with high efficiency and long persistence against eucalyptus purple blotch. [Method]10%Difenoconazole WG,500 g /L thiophanate-methyl SC and 50% carbendazim WP were evaluated through experiment in forest,and clear water was used as CK. [Result]Three fungicides all had relatively good control effect against eucalyptus purple blotch. Most eucalyptus trees were able to restore growth and sprout new shoots after continuous three times of administration with the interval of 10 d. 10% Difenoconazole WG possessed the best control effect against eucalyptus purple blotch,with the disease index of 25. 24 and the control effect of 40. 24%; followed by 500 g /L thiophanate-methyl SC 600 times dilution,with the disease index of 27. 09 and the control effect of 35. 87%; 50% carbendazim WP 500 times dilution had the poorest control effect,with the disease index of 32. 21 and the control effect of23. 74%. The disease index of CK was 42. 24. [Conclusion]The above fungicides were safe to eucalyptus,and could be used to control eucalyptus purple blotch.展开更多
文摘Dear editor,Mosquito-borne diseases,viz.,malaria,filariasis,dengue hemorrhagic fever,chikungunya,Japanese encephalitis etc.,created huge impact on humans over the world,and the chemical insecticides remain the mainstay of effective control.But,indiscriminate and rampant use of the chemical insecticides in controlling mosquito vectors,in order to prevent diseases vectored by them,has resulted problems related to the adverse environmental effects for their(insecticides)potential toxicity,high operational cost,community acceptance,and the development of insecticide resistance among the vectors.The factors mentioned above prompted the search for new means of control strategies.Currently,the botanicals(viz.,plant extracts,essential oils and phytochemicals)with mosquitocidal potential
基金Supported by Fundamental Research Project of Chongqing Academy of Forestry"Control Technologies against Major Pests and Diseases in Eucalyptus Planta-tion"(BB1102)Project of Chongqing Science and Technology Commission"Chongqing Key Laboratory of the Three Gorges Area Forest Ecology Protectionand Restoration"(CSTC,2007CA1001)
文摘[Objective] The paper was to explore safe fungicides with high efficiency and long persistence against eucalyptus purple blotch. [Method]10%Difenoconazole WG,500 g /L thiophanate-methyl SC and 50% carbendazim WP were evaluated through experiment in forest,and clear water was used as CK. [Result]Three fungicides all had relatively good control effect against eucalyptus purple blotch. Most eucalyptus trees were able to restore growth and sprout new shoots after continuous three times of administration with the interval of 10 d. 10% Difenoconazole WG possessed the best control effect against eucalyptus purple blotch,with the disease index of 25. 24 and the control effect of 40. 24%; followed by 500 g /L thiophanate-methyl SC 600 times dilution,with the disease index of 27. 09 and the control effect of 35. 87%; 50% carbendazim WP 500 times dilution had the poorest control effect,with the disease index of 32. 21 and the control effect of23. 74%. The disease index of CK was 42. 24. [Conclusion]The above fungicides were safe to eucalyptus,and could be used to control eucalyptus purple blotch.
