Author Archives: Jamie Hopkinson

Considerations when using pyriproxyfen on silverleaf whitefly

Jamie Hopkinson   January 10, 2017   Comments Off on Considerations when using pyriproxyfen on silverleaf whitefly

With the current season shaping up to be one of high insect pressure, we may see silverleaf whitefly (SLW), Bemisia tabaci reach problematic levels in regions outside of their traditional range. For growers and agronomists not familiar with their control it is worth investing some time to understand how one of the main registered insecticides, pyriproxyfen, works. What is pyriproxyfen?… Read more »

Ladybirds enjoy a cotton aphid buffet

Jamie Hopkinson   June 6, 2016   Comments Off on Ladybirds enjoy a cotton aphid buffet

The minute two-spotted ladybird beetle (Diomus notescens) and the transverse ladybird beetle (Coccinella transversalis) are two natural enemies of cotton aphid (Aphid gossypii). They are commonly found in Australian crops, however relatively little is known about their biology. A series of laboratory experiments were conducted by the Queensland Department of Agriculture and Fisheries (DAF) to learn more about aspects of… Read more »

New insecticides for the control of silverleaf whitefly (SLW) in cotton, and considerations for resistance management

Jamie Hopkinson   January 8, 2016   Comments Off on New insecticides for the control of silverleaf whitefly (SLW) in cotton, and considerations for resistance management

Two new insecticides have recently been registered to control Bemisia tabaci B-biotype in cotton. Product Insecticide group Active ingredient Pest Exirel® anthranilic diamide (Group 28) cyantraniliprole SLW, Helicoverpa, cotton aphid (suppression only) Starkle® neonicotinoid (Group 4A) dinotefuran SLW & green mirid Exirel® was registered for cotton use in the 2013/14 season, and Starkle® has been registered for the current cotton… Read more »