<H1>The use of herbicide resistant corn hybrid technologies should be based upon ……………...</H1> <P><UL> <LI><H2> marketability </H2> </UL><UL> <LI><H2> weed control problems </H2> </UL><UL> <LI><H2> consistent hybrid performance and other agronomic traits </H2> </UL><UL> <LI><H2> reduced or equal control costs</H2> </UL></P> <P></P> <P>