Thresholds for green mirids in cotton
Abstract
Australian cotton production is in the process of adopting new trarisgenic
(INGARD) technology for managing heliothis and other caterpillars. INGARD
technology has no effect on sucking insects such as green mirids, and under the low
insecticide use patterns envisaged using INGARD cotton, the status of sucking pests
in general will increase. In the past, most insecticides applied to control heliothis,
inadvertently controlled sucking pests. As these are removed from operations,
sucking pests will survive in the crop.
Conventional cotton producers also have an awareness of the need to adopt a more
selective approach to early season pest management. Both these approaches
highlight the need to develop sound management practices for sucking pests in
general, and green mirids in particular, as current insecticide treatments against
these pests are invariably disruptive to beneficial fauna. Some of the new, more
selective insecticides for green mirids (e. g. fipronil, imiacloprid) will be more
expensive than organophosphates and pyrethroids, further highlighting the need for
careful consideration about when and how to control green mirids.
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- 2001 Final Reports
CRDC Final reports submitted 2001