Groundspreading spreadmark
Machine testing
There are two machine variables that affect how accurately and evenly fertilisers are applied by ground spreading equipments.
The accuracy of the application rate
The transverse (at right angles to the direction of travel) variation in the application rate
Spreadmark defines how these variables are to be measured and sets tolerance levels. For example, the transverse coefficient of variation (CV) must be less than 15% for N fertilisers and 25% for non-N fertilisers.
A recent study on fertiliser spreading patterns and their effect on farm production concluded that up to 50% of fertiliser is spread unevenly. This is resulting in estimated production losses of $5 to $30/ha on pasture, and $30 to $300/ha on high value crops, such as grass seed, wheat and onions. This does not take into account losses resulting from other effects of uneven spread such as variations in maturity of seed and hay crops, luxury uptake and leaching.
A machine cannot carry the Spreadmark logo unless it is Spreadmark certified and complies with these specifications.
Groundspread operators can obtain a Spreadmark Certificate if they complete a defined training course to the satisfaction of Spreadmark. The course is designed to improve operator skills and knowledge and comprises seven units:
The Spreadmark Code of Practice
The driver and the spreader – the public face of the industry
The driver and regulations
Communication skills
Environmental awareness
Fertiliser knowledge
Spreader skills
There are two components to Aerial Spreadmark:
Testing of the spreading equipment to ensure it meets prescribed standards
Pilot training to ensure the pilot has the skills and knowledge to ensure that fertiliser is applied accurately and in accordance with the Fertiliser Code of Practice
Operators will hold a current Approved Aerial Pattern Test Certificate for all fertiliser spreading equipment.
A machine cannot carry the Aerial Spreadmark logo unless it is Aerial Spreadmark registered and complies with these specifications.
Aerial spreading operators can obtain a Aerial Spreadmark Certification if they complete a defined training course to the satisfaction of Aerial Spreadmark. The course is designed to improve operator skills and knowledge and comprises seven units:
The Aerial Spreadmark Code of Practice
The pilot and the spreader
The pilot and regulations
Communication skills
Environmental awareness
Fertiliser knowledge
Spreader skills
Please visit the Fertiliser Quality Council website for further information on the Spreadmark codes of practice, or to locate an accredited spreader in your area.