| plum pox in north america: identification of aphid vectors and a potential role for fruit in virus spread. | abstract thirteen aphid species were tested for their ability to transmit pennsylvania isolates of plum pox virus (ppv) collected in columbia (penn-3), franklin (penn-4), and york (penn-7) counties, pa. four species, aphis fabae, a. spiraecola, brachycaudus persicae, and myzus persicae, consistently transmitted ppv in preliminary transmission tests. two species, metopolophium dirhodum and rhopalosiphum padi, were occasional inefficient vectors. toxoptera citricida, from florida, also was an effe ... | 2004 | 18943108 |
| population fluctuation and faunal indices of aphids (hemiptera, aphididae) in peach orchards in araucária, pr. | aphids are sap-sucking insects that mainly attack shoots and young leaves of peach trees and many other plant species; however, knowledge of the brazilian aphid fauna is scant. the objective of this study was to identify aphid species collected in peach orchards (prunus persica batsch) and to determine their faunal indices for occurrence and dominance. the experiment was conducted from july 2005 to september 2006 in six chimarrita peach orchards in the municipality of araucária, pr, brazil. the ... | 2009 | 19802456 |
| managing brachycaudis persicae (homoptera: aphididae) during peach orchard establishment. | we investigated whether preplant root dips or postplant sprays or drenches could be used to control the black peach aphid, brachycaudus persicae (passerini), on young peach trees. in greenhouse trials, b. persicae died after being placed on peach trees that had their roots dipped in imidacloprid before planting. all rates (0.8, 1.6, and 3.2 ml/liter of water) tested controlled this aphid. b. persicae died faster on trees dipped in imidacloprid (1.6 ml/liter of water) for 5 min before planting th ... | 2002 | 12020015 |