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目前显示的是标签为“Helicoverpa armigera”的博文

Effect of Selected Insecticides on Helicoverpa armigera Hubner (Lepidoptera: Noctuidae) on Tomato (Lycopersicon esculentum Miller) and Their Successful Management

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53546#.VMiF7CzQrzE Author(s)     Ghulam Abbas 1 , Najamul Hassan 1 , Muhammad Farhan 1 , Ikramul Haq 1 , Haider Karar 2   Affiliation(s) 1 Pest Warning and Quality Control of Pesticides, Lahore, Pakistan . 2 Entomological Research Sub-Station, Entomological Research Institute, Ayub Agricultural Research Institute, Faisalabad, Pakistan . ABSTRACT Helicoverpa armigera H. is a polyphagous notorious pest of a number of economic crops including tomato. In tomato, it can reduce its yield as high as 70% due to fruit boring. Although some predators and parasitoids have been recorded in the field for their natural control, their manipulation to a successful crop management is still awaited. To overcome this pest, insecticides play a significant role in its effective crop management program globally. Tomato is an absolutely perishable commodity and need...

Feeding Deterrence of Common Spices against Helicoverpa armigera Larvae

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=51516#.VG2zEmfHRK0 Author(s) Weizheng Li , Jingjing Hu , Jing Yang , Guohui Yuan * , Xianru Guo , Meihao Luo Affiliation(s) Plant Protection College, Henan Agricultural University, Zhengzhou, China . ABSTRACT Edible spices with strong smells or heavy tastes may be a promising resource of feeding deterrents. We compared the feeding deterrence of the ethanol extracts of 21 common spices against the larvae of a generalist pest species, Helicoverpa armigera , using a multiple-choice leaf disc bioassay. The results show that Zanthoxylum bungeanum extract (as a reference) always evoked significant feeding deterrence, while Piper nigrum...