Ecological Selectivity
• Differential mortality based on pesticide use
– Formulation (e.g. granules result in more mortality on soil pests than
on foliar NE’s)
– Placement (e.g. spot sprays, seed treatments, wicks, in-furrow).
– Timing (e.g. pre vs. post-emergent applications, diurnal timing for
bees)
– Dosage – Reduced dosage usually used in conjunction with one of
those above
Uses of Selectivity in IPM
• Mammalian toxicity of decreasing significance except in
urban/structural IPM
