Crop monocultures hinder natural pest
control
Growing more corn for the purpose of producing ethanol reduces
the ability of beneficial insects to control pests, says a
research by scientists at the Michigan State University. This
kind of monoculture results in a significant drop in the
diversity of the ecosystem, which in turn leads to a reduction
in the ability of that landscape to provide beneficial insects
to fight pests. In this case corn is a less favorable habitat
for many ladybird beetles and other beneficial insects that
control pests in soybeans and other crops. This results in
loss of yields and increased pesticide use. Policymakers
should be urged to think about the suitability of a biofuel
crop to a particular landscape as well as the importance of
diversity.