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An Evaluation of Losses Caused by Hessian Fly in a Wheat Fertilizer Experiment¹

Synopsis: Losses attributed to hessian fly in wheat grown at 3 levels of nitrogen in the presence or absence of 2 levels of phosphorus and potassium were evaluated. Infestation and losses due to hessian fly were highest at the highest levels of nitrogen.

² Formerly Graduate Research Assistant at Cornell and now Lecturer in Agriculture, University of Nigeria, Nsukka, Nigeria. The author gratefully acknowledges the assistance given in all phases of this investigation by N. C. Brady and R. B. Musgrave, Head, Department of Agronomy, and Professor of Agronomy, respectively.

Received for publication March 23, 1962.