2012-13 Summer Trial Snapshots
1. Residual Herbicides in the Summer Fallow
Six trials targeting the control of awnless barnyard grass, four trials targeting feathertop Rhodes grass (FTR) and two targeting windmill grass (WG). The main aim is to look at the longevity of residual activity on both broadleaf and grass weed control.
2. Chloris Herbicide Compatibility
Three trials are planned (two on FTR, one on WG) to evaluate the impact on grass control from a range of broadleaf herbicide options when mixed with a Group A herbicide. Treatments will be compared with or without a double-knock treatment of paraquat.
3. Chloris Double-knock Timing
Three trials (two on FTR, one on WG) comparing glyphosate and Group A products for knockdown control. Main aims are to confirm appropriate timing intervals for paraquat double-knock application and to evaluate alternative Group A herbicides that may have shorter plantback restrictions.
4. Non-Phenoxy Products for Fleabane Control
Evaluation of herbicide options for controlling large fleabane in the summer fallow. The emphasis in these three trials will be on products that can be safely used near cotton and other phenoxy sensitive crops and provide acceptable efficacy as part of a double-knock strategy.
5. Phenoxy Mixtures for Fleabane Management
Three trials are planned to determine the most reliable herbicide options for controlling large fleabane in situations when phenoxy use is acceptable. All treatments will have a double-knock application of paraquat.
6. Mungbean Herbicide Screen
Four trials are planned to evaluate the crop safety of a range of herbicides in mungbeans. This is a continuation of a project commenced in 2011/12 screening for potential registration candidates.
7. Mungbean Powdery Mildew Management
An evaluation of fungicide efficacy for powdery mildew control in mungbeans. Four trials will evaluate product choice, application timing as well as crop safety.
8. Sorghum Fungicides
Six trials are planned to evaluate the economics of late fungicide application in sorghum for Fusarium head blight and sorghum rust management. It is expected that suitable sites will have a history of consecutive sorghum crops in recent seasons.
NGA also have collaborative work planned looking at nutrition in sorghum and mungbean and the impact of summer crop and variety choice on root-lesion nematode multiplication.
If you have trouble opening these links our website address is www.nga.org.au