Estimation of Population Density of the Russian Wheat Aphid (Homoptera: Aphididae) from the Proportion of Grain Tillers with Different Tally Thresholds of Aphids

Author: FENG MING-GUANG   NOWIERSKI ROBERT M.   ZENG ZHENG   SCHAREN ALBERT L.  

Publisher: Entomological Society of America

ISSN: 1938-291X

Source: Journal of Economic Entomology, Vol.86, Iss.2, 1993-04, pp. : 427-435

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