MIG EMS coordinator Cameron Weeks says herbicide resistance is among the EMS' major targets, along with wind erosion, water erosion, acidity, protection of remnant vegetation and greater incorporation of perennials into cropping systems to help alleviate recharge.
"EMS will apply differently from farm to farm. Broadly, the process involves identifying environmental hazards, setting performance targets, agreeing on management strategies, monitoring progress and ultimately having auditors verify the system," Mr Weeks said.
Management issues and tools
- Wind erosion — retain stubbles, use minimum till, don't burn stubbles on sandy soils, don't overgraze.
- Water erosion — minimum tillage, contour working on heavier sloping soils, grade banks.
- Salinity — remove excess water with banks or drains, rehabilitate saline areas (salt-tolerant species), use perennial pastures on certain parts of landscape.
- Acidification of soils — apply lime, manage nitrogen inputs.
- Nitrate leaching into groundwater — apply N only as required by crop, split applications to prevent significant leaching on sandy soils.
- Pesticides — use best technology to minimise drift, spray only in suitable conditions.
- Resistant weeds — have become prominent in an environment of public concern surrounding GM crops and 'super weeds'. Herbicide-resistant weeds are the same thing from conventional crops.
North, South, West