The Grains Research and Development Corporation (GRDC) has recently published a series of fact sheets aimed at helping growers achieve best practice in spray application.
This includes In-crop Herbicide Use, the latest fact sheet with guidelines from spray application specialist Bill Gordon.
Top tips include:
- Knowledge of a product’s translocation and formulation type is important for selecting nozzles and application volumes.
- Evenness of deposit is important for poorly or slowly translocated products.
- Crop growth stage, canopy size and stubble load should influence decisions about nozzle selection, application volume and sprayer operating parameters.
- Robust rates of products and appropriate water rates are often more important for achieving efficacy than the nozzle type, but, correct nozzle type can widen the spray window, improve deposition and reduce drift risk.
- Travel speed and boom height can affect efficacy and drift potential.
- Appropriate conditions for spraying are always important.