Browsing by Author "Chandler, KJ"

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Bionomics and importance of the froghopper eoscarta carnifex (F.) (Hemiptera : cercopidae), a new pest of sugarcane : SRDC final report BS36S
(BSES, 1994) Chandler, KJ
Feasibility of acoustic detection of canegrubs for better management decisions : SRDC final report BSS300
(BSES, 2007) Samson, PR; Chandler, KJ; Mankin, R
Monitoring of pest populations is a key to effective management of insects in many crops, allowing pest-control treatments to be applied when needed, and only when needed. Monitoring should be relied on more for management of canegrubs in sugarcane, but its widespread adoption is held back by the laborious task of digging up cane stools to assess grub populations. This project aimed to assess the feasibility of detecting grub populations by the sounds that they make below-ground. A researcher experienced in acoustic detection of hidden insects, Dr Richard Mankin from the United States Department of Agriculture in Florida, worked with BSES entomologists near Mackay and Bundaberg for 2 weeks in April-May 2007, using equipment that he brought with him. The investigations demonstrated that canegrubs can be detected readily in Queensland sugarcane fields during a time when worthwhile decisions could be made about future grub management. However, more work is needed to develop a system that could be deployed as a practical monitoring tool.
Measuring the susceptibility of Canegrubs to chlorpyrifos insecticide : SRDC final report BS49S
(BSES, 1997) Chandler, KJ; Rose, HA
Keith Chandler developed a bioassay system more efficient than any used previously, and used it to measure the susceptibility of 10 canegrub species to chlorpyrifos. The data were reviewed for evidence of resistance. The effects of grub size and soil type on insecticide activity were assessed, in order to relate laboratory measurements to in-field product performance. In a parallel program, Dr Rose developed tissue preparation methods and a biochemical assay for a key enzyme involved in resistance to chlorpyrifos, and measured enzymes from canegrubs with a range of tolerance to chlorpyrifos.
Strategies to control greyback canegrub in early harvested ratoon crops : SRDC final report IPB001
(BSES, 2002) Chandler, KJ
Greyback canegrubs consistently cause losses of $5-10 million per year to sugarcane producers, with periodic disastrous outbreaks where losses are about $20-40 million. This indicates that the current strategy is inadequate to manage this pest in the modern production environment. This project targets one important constraint to developing a better management package - the inability to treat ratoon crops, the crop category contributing most to outbreaks. The specific aim was to largely overcome this constraint through, simultaneously, demonstrating to and encouraging growers to adopt more advanced and efficient control systems, whilst exploring the potential of a new insecticide within the system framework. This project saw a joint involvement between SRDC, BSES, the industry-funded Inkerman Cane Protection and Productivity Board (CPPB), and Bayer CropScience, to facilitate more rapid and relevant registration of a compound for use in sugarcane production.Long-term BSES and SRDC program goals are to develop combinations of new and existing cultural, biological and chemical tactics into newer, flexible, integrated pest management (IPM) strategies to modulate the severity and frequency of losses and to provide more affordable and sustainable controls. In evaluating a new insecticide for use in ratoon crops, grower participants and supporting staff were introduced to the concept of developing more modern IPM practice for managing greyback canegrub. The new system may also be applicable to other control agents. The aim is for integrated strategy with flexibility - new risk-assessment-based systems for selecting fields suitable for this treatment, or for alternative tactics, and ?trap-cropping? concepts for attaining maximum benefit from a specific treatment through cross-protection of neighbouring fields.