This study is part of a regional NE-183 project to evaluate the arthropod pest susceptibility of 26 cultivar/rootstock combinations (23 cultivars on M.9 337 rootstock and 3 cultivars on MARK rootstock). The 0.14 hectare planting was established as 5 replications of each cultivar/rootstock combination in a randomized block design at a spacing of 2.5 m x 4.3 m. Incidence and/or injury was assessed in 2000 and 2001 for rosy apple aphid, spirea aphid, white apple leafhopper, spotted tentiform leafminer, european red mite, Japanese beetle and fruit-feeding insects. Incidence of foliage pests varied as much as 17 fold, and fruit injury as much as 32 fold among the cultivar/roostock combinations.
Keywords: Arthropods on Fruit
The ESA 2001 Annual Meeting - 2001: An Entomological Odyssey of ESA