WebDysaphis plantaginea infestations differed in intensity and in the time of occurrence among years and orchards (Figure 1). Aphids occurred from mid-April to early July, and the peak of infestation varied from the 3rd week of May to mid-June. At that time 15–55% of the shoots were COLONIZATION OF APPLE ORCHARDS BY PREDATORS 405
ADW: Dysaphis pyri: CLASSIFICATION - animaldiversity.org
WebBecause of the potentially serious damage rosy apple aphid, Dysaphis plantaginea (Passerini) (Homoptera: Aphididae), can cause to apple fruit and branch development, prophylactic insecticides are often used for control. If biological control could be relied on, the amount of pesticide applied in orchards could be reduced. WebDysaphis pyri is an important aphid pest of European pear (Pyrus communis) cultivars, none of which are currently reported to be resistant. In this study, we produced a progeny of the European pear Comice crossed with an accession of snow pear (Pyrus nivalis) that segregated for resistance to D. pyri in a Mendelian fashion, indicating the presence of a … csoe ftth
Dysaphis plantaginea - an overview ScienceDirect Topics
Webdiaschisis: ( dī-as'ki-sis ), A sudden inhibition of function produced by an acute focal disturbance in a portion of the brain at a distance from the original site of injury, but … WebThe hawthorn-carrot aphid, (Dysaphis crataegi), also known as Dysaphis (Dysaphis) crataegi, is an aphid in the superfamily Aphidoidea in the order Hemiptera. It is a true bug and sucks sap from plants. Taxonomy. The hawthorn … WebNov 30, 2024 · The question of whether food webs are resource or predation controlled is crucial for the development of sustainable IPM strategies in agriculture. Many IPM studies focus on top–down control, while little is known about bottom–up effects. Here, we unravelled the bottom–up interactions between rosy apple aphid (RAA) Dysaphis … eah t7