4863 1 archive 596 disk0/00/00/48/63 2005-06-03 2009-08-20 14:26:15 2009-08-20 14:26:15 conference_item show 0 en perennial-crop-production 2003 56th Conference of The New Zealand Plant Protection Society Incorporated never 0 http://www.hortnet.co.nz http://www.fibl.org/forschung/anbautechnik-mehrjaehrig/index.php http://www.hortnet.co.nz/publications/nzpps/ TRUE paper Rogers D.J. Walker J.T.S. Moen I.C. Weibel F. Lo P.L. Cole L.M. unpub 7fruit leafroller, Tortricidae, parasitism, understorey, apple, Bioobstbau Leafrollers (Tortricidae) were collected from apple foliage and understorey vegetation in six commercial organic apple orchards in Hawke’s Bay over one season. Assessments were made of plant species present in the understorey at the time of collection. All leafroller larvae were reared to adults on artificial diet to identify leafroller species and parasitoids. Nearly half (47%) of all leafrollers collected in these orchards were located in the understorey, highlighting the importance of understorey and its management for the control of leafroller. Dock, clover and dandeliontype plants contributed 25% to the overall understorey, yet hosted 75% of the leafrollers collected from the understorey. Dolichogenidea sp. was the most abundant parasitoid (79%) attacking leafrollers found amongst the apple foliage, whereas Glyptapanteles demeter was dominant in the understorey (61%). Generally the number of leafrollers in an orchard was proportional to the abundance of broadleaf weeds and inversely proportional to parasitis. 2003 published Proceedings of 56th Conference of The New Zealand Plant Protection Society Incorporated (2003) Baggen, L.R.; Gurr, G.M.; Meats, A. 1999: Flowers in tri-trophic systems: mechanisms allowing selective exploitation by insect natural enemies for conservation biological control. Entomol. Exp. Appl. 91: 155-161. Burnip, G.M.; Suckling, D.M. 1997: Evaluation of legumes for development of leafroller-free orchard understories. Proc. 50th Plant Prot Conf.: 420-424. Charles, J.G.; Walker, J.T.S.; White, V. 1996: Leafroller phenology and parasitism in Hawkes Bay, New Zealand, canefruit gardens. N.Z. J. Crop Hort. Sci. 24: 123-131. Danthanarayana, W. 1983: Population ecology of the lightbrown apple moth Epiphyas postvittana (Walker) (Lepidoptera:Tortricidae). J. Anim. Ecol. 52:1-33. Irwin, N.A.; Wratten, S.D.; Chapman, R.B.; Frampton, C.M. 1999: Effects of floral resources on fitness of the leafroller parasitoid (Dolichogenidea tasmanica) in apples. Proc. 52nd N.Z. Plant Prot. Conf.: 84-88. Lo, P.L.; Suckling, D.M.; Bradley, S.J.; Walker, J.T.S.; Shaw, P.W.; Burnip, G.M. 2000: Factors affecting feeding site preferences of the lightbrown apple moth, Epiphyas postvittana (Lepidoptera: Tortricidae). N.Z. J. Crop Hort. Sci. 28: 235-243. Singh, P. 1983: A general purpose dietary mixture for rearing insects. Ins. Sci. Applic. 4: 357-362 Suckling, D.M.; Burnip, G.M.; Walker, J.T.S.; Shaw, P.W.; McLaren, G.F.; Howard, C.R.; Lo, P.L.; White, V.; Fraser, J. 1998: Abundance of leafrollers and their parasitoids on selected host plants in New Zealand. N.Z. J. Crop Hort. Sci. 26:193-203. Suckling, D.M.; Burnip, G.M.; Gibb, A.R.; Daly, J.M.; Armstrong, K.F. 2001: Plant and host effects on the leafroller parasitoid Dolichogenidea tasmanica. Entomol. Exp. Appl. 100: 253-260. Thomas, W.P.; Burnip, G.M. 1993: Lepidopterous insect pests and beneficials: The influence of understorey. In: McCarthy, T.P.; Daly, D.J.; Burnip, G.M. ed. Proc. Biological Apple Production Seminar. HortResearch, Palmerston North. 78 p. Van Driesche, R.G.; Bellows Jr, T.S.; Elkinton, J.S; Gould, J.R.; Ferro, D.N. 1991: The meaning of percentage parasitism revisited: solutions to the problem of accurately estimating total losses from parasitism. Environ. Entomol. 20:1-7. Walker, J.T.S; Wearing, C.H; Rogers, D.J.; Moen, I.C; Immik, E.M.; Colhoun, K., 2002: Leafroller control in organic apple orchards. HortResearch Report No. 2002/246. HortResearch, Palmerston North. 26 p. public 4350 1 4863 1 application/pdf de public

Weibel-2005-leafroller.pdf

Weibel-2005-leafroller.pdf 237396 http://orgprints.org/4863/1/Weibel-2005-leafroller.pdf