Insecticide resistance, environmental degradation, human health
impacts, resource loss, and economic concerns have thus triggered a
growing interest in alternative management techniques. New technologies,
such as transgenic crops, are starting to remediate the
problem of resistance. However, resistance to Bt Cry toxin by P.
xylostella populations has been reported in some locations (i.e. in
Malaysia by Sayyed and Wright (2001). The usefulness of new
approaches will depend on the availability of strategies that suit the
needs of farmers and fit into their current crop protection strategies.