51�Թ�

To find out how the PKFs were killing the parasites, scientists exposed braconid wasp larva to beet armyworm and infected northern armyworm plasma.

This chemical allowed the plant to change its chemistry, which made it less appetizing to the beet armyworm caterpillars that were placed on a treated plant.

Low rainfall amounts and low seed germination have pushed bugs, like the voracious beet armyworm, from the California hillsides into agricultural fields.