of resistant varieties, which have not had their endogenous
resistance characteristics replaced by yield
characteristics; mixed cropping; crop rotation; and
chemical control in emergencies (Intermediate Technology,
1992). The development of IPM strategies is
vital if pesticide use is to be rationalized in the future.
Any research or development concerning pesticides,
including occupational health, should comply with IPM
requirements, to ensure that it is appropriate.
Because IPM involves a multidisciplinary approach,
which requires that solutions are individually tailored
for specific pest problems, it is difficult to implement.
This, in addition to increasing population pressures on
natural resources and the effects of the pesticide
treadmill, means that despite the aim of IPM to reduce
reliance on pesticides, it is likely that pesticide use in
developing countries will increase (Oka, 1988; cited in
Adalla and Hoque, 1991; NRI, 1992).