Effects of Velvetleaf Competition and Defoliation by Soybean Looper (Lepidoptera: Noctuidae) on Yield of Indeterminate Soybean

Author: HELM CHARLES G.   KOGAN MARCOS   ONSTAD DAVID W.   WAX LOYD M.   JEFFORDS MICHAEL R.  

Publisher: Entomological Society of America

ISSN: 1938-291X

Source: Journal of Economic Entomology, Vol.85, Iss.6, 1992-12, pp. : 2433-2439

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