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T. Voss ; R. Kieckhefer ; B. Fuller ; M. Mcleod ; D. Beck | 1997Populations of the English grain aphid, Sitobion avenae (F.), and the bird cherry-oat aphid, Rhopalosiphum padi (L.), develop in some years on maturing wheat, Triticum aestivum (L.), in the Dakotas and western Minnesota. Two experiments were con[...]article/chapitre/communication
M. Mowes ; B. Freier ; J. Heimann | 1997In 1995, two experiments were performed to examine the relationship between different infestation trends of Sitobion avenae and yield loss in winter wheat grown under optimal conditions in climate chambers without nitrogen or water deprivation t[...]article/chapitre/communication
A. Fereres ; C. Avilla ; J. Collar ; M. Duque ; C. Fernandezquintanilla | 1996Major damaging agents of open-field pepper crops in Spain are potato virus Y (PW), the green peach aphid, Myzus persicae (Sulzer), and black nightshade, Solanum nigrum L. Yield loss of pepper affected by associations of these interacting agents [...]