An Estimate of the Relation Between Density of Bertha Armyworm and Yield Loss on Rapeseed, Based on Artificial Infestations

Author： Bracken G. K.   Bucher G. E.  

Publisher： Entomological Society of America

ISSN： 1938-291X

Source： Journal of Economic Entomology, Vol.70, Iss.6, 1977-12, pp. : 701-705

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