Imidacloprid treatment of seedling roots as a component of integrated pest management in Brassica crops
In Queensland,Australia,Brassica vegetable crops are attacked by a complex of insect pests. In the early months of the growing season(February-May),crops are attacked by Bemisia tabaci type B (Gennadius)and the major lepidopterous pests are Hellula hydralis(Guenee),H.undalis(Fabricius)and Crocidolomia pavonana(Fabricius).Later in theseason(May-September),the diamondback moth,Plutella xylostella(L.),poses the greatest pest threat to the successful cultivation of Brassica crops.Frequent foliar applications of synthetic chemical insecticides to control Hellula spp.and C. pavonana early in the crop season can seriously disrupt natural enemies in the agro-ecosystem and compromise the success of subsequent integrated pest management programmes developed for the diamondback moth. In eady season field studies(March-May,2002-2004),imidacloprid treatment of seedling roots prior to transplant significantly reduced Hellula spp. Infestation levels and B. Tabaci infestation levels when compared with untreated controls.Coupled with foliar sprays,imidacloprid seedling root treatment can manage early season Brassica pests without compromising crop yield and has the potential to be incorporated into existing pest management programmes with less disruption of the successful management of the diamondback moth.
Bronwyn Walsh Michael J.Furlong
Department of Primary Industries and Fisheries,Locked Bag 7,MS 437,Gaaon,4343,Queensland,Australia School of Integrative Biology,University of Queensland,St Lucia 4072,Queensland,Australia
国际会议
北京
英文
311-320
2006-10-24（万方平台首次上网日期，不代表论文的发表时间）