| the diversity of arbuscular mycorrhizal fungi amplified from grapevine roots (vitis vinifera l.) in oregon vineyards is seasonally stable and influenced by soil and vine age. | the diversity of arbuscular mycorrhizal fungi (amf) in 10 oregon vineyards was assessed by examining spores in soil and amplifying mycorrhizal dna from roots. seventeen spore morphotypes were found in soil, including seven species in the acaulosporaceae. eighteen phylotypes were amplified from grape roots with am1 and ns31 primers, and clones were dominated by glomus spp. (> 99%). a few clones (< 1%) representing a single phylotype within gigasporaceae, and a single clone within archaeosporaceae ... | 2009 | 19750939 |
| drosophila suzukii (diptera: drosophilidae) and its potential impact to wine grapes during harvest in two cool climate wine grape production regions. | drosophila suzukii (matsumura) is a global pest attacking various berry crops. d. suzukii lays eggs in damaged and in intact wine grape berries of the most soft-skinned varieties. here, we describe the relative host utilization of different wine grape cultivars grown in northern italy and oregon. assessments of host berry utilization were performed in both field and laboratory settings. results were correlated to physiological changes occurring during grape berry development starting at véraison ... | 2015 | 26470240 |
| developmental parameters and seasonal phenology of calepitrimerus vitis (acari: eriophyidae) in wine grapes of western oregon. | developmental parameters of protogyne calepitrimerus vitis (nalepa) (acari: eriophyidae) were determined at 12, 15, 17, 22, 25, 28, 31, and 34 °c to better understand seasonal activity, population growth, and ultimately more effectively manage pest mites in wine grapes. net reproductive rate (r(o)) was greater than zero at all temperatures with the maximum r(o) (9.72) at 25 °c. the lowest estimated r(o) (0.001) occurred at 34 °c. there was a gradual decrease in mean generation time (t) as temper ... | 2010 | 22182568 |