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'ethyl acetate extract' 
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article/chapitre/communication
I. Annan ; W. Tingey ; G. Schaefers ; K. Saxena | 1996Membrane feeding studies were conducted to determine the effects of raw juices and chemical extracts of leaves of aphid-resistant (ICV-12) and aphid-susceptible (ICV-1) cultivars of cowpea [Vigna unguciculata L. (Walp.)], on the survival, growth[...]
article/chapitre/communication
I. Annan ; G. Schaefers ; W. Tingey ; W. Tjallingii | 1997Electrical penetration graph recordings using direct current (DC-EPGs) were used to analyze aspects of the probing behavior of cowpea aphid, Aphis craccivora Koch, on intact plants and on hexane, ethyl acetate, and methanol extracts of leaves of[...]
