Effect of three apple rootstocks on the population of the small red-belted clearwing borer, Synanthedon myopaeformis.
Abstract Experiments were conducted in Ash-Shoubak area of Jordan from June 2003 to September 2005 to study the effect of three apple rootstocks on the development of the small red-belted clearwing borer, Synanthedon myopaeformis (Borkh.) (Lepidoptera: Sesiidae), under field conditions. Mondial Gala apple trees grafted on the dwarfing rootstock M9 and the semi-dwarfing rootstock M26 were equally infested, whereas those grafted on MM106 showed significantly lower infestation levels. S. myopaeformis bore into burr knots that develop below a graft union on rootstocks and girdle the tree. There was a significant effect of rootstock on the numbers of burrs present, and the percentage of burr knots infested by S. myopaeformis, with M106 having significantly fewer burrs, and a lower percent infested.
Department of Agricultural Sciences, Ash-Shoubak University College, Al-Balqa' Applied University, Al-Salt 19117, Jordan. ateyyat@bau.edu.jo
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Ateyyat
D000383:Agriculture / Q000379:methods*; D000818:Animals; D027845:Malus / Q000469:parasitology*; D009036:Moths / Q000254:growth & development / Q000502:physiology*; D010935:Plant Diseases / Q000469:parasitology* / Q000517:prevention & control; D018517:Plant Roots / Q000469:parasitology*; D011156:Population Density; D011679:Pupa / Q000254:growth & development; D013997:Time Factors