Economic injury levels and economic thresholds for potato leafhopper (Homoptera:Cicadellidae) on alfalfa in Minnesota [Empoasca fabae]

Experiments were conducted at Rosemount, Minn., to establish economic injury levels and economic thresholds for the potato leafhopper, Empoasca fabae (Harris), on established of alfalfa, Medicago sativa L. Gradients of potato leafhopper numbers were established in plots of cv. "Vernal" alf...

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Veröffentlicht in:	Journal of economic entomology 1983, Vol.76 (6), p.1341-1349
Hauptverfasser:	CUPERUS, G. W, RADCLIFFE, E. B, BARNES, D. K, MARTEN, G. C
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences Cicadellidae Control Empoasca fabae Fundamental and applied biological sciences. Psychology Generalities Medicago sativa Phytopathology. Animal pests. Plant and forest protection Protozoa. Invertebrates Records, symptoms, damages, economic importance, population surveys
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