TECHNOLOGY

Since its launch in 1983, the Marshall Multispread product range has undergone constant design improvements to keep pace with the changing requirements of Australian farmers. Roesner Pty Ltd has a dedicated in house engineering team that’s sole focus is the design, engineering and field testing of new product innovations.

Spinner Technology

The Marshall Multispread D3 Spinner design is a result of Roesner Pty Ltd’s on-going Spinner Research and Development programme. The goals of this programme are to develop a spinner design that enables;

Wider spread widths to reduce fertiliser, fuel and labour costs;
Accurate spread patterns that ensure correct placement of nutrients in the field, optimising crop growth and minimising environmental run-off;
A simple machine setup across a range of fertiliser types.

During the D3 spinner development process, over 250 physical tests were undertaken in controlled and real-life paddock conditions with a range of different fertiliser types. To add the design process, high speed photography, discrete element particle analysis and numerical modelling were used to rapidly test and validate fertiliser chute and spinner vane designs.

All physical testing is carried out using the Australia Fertiliser Services Association (AFSA) ACCUSpread testing regime.

The D3 system achieves spread widths up 36m for granulated products such as Urea and Superphosphate and up to 16m for non-granulated products such as lime, gypsum, dolomite, manures and composts.

Spinner vane angles and fertiliser chute position can be altered to adjust the spread distribution evenness and overall width.

There are many external variables that affect the spreading performance of the Marshall Multispread. It is important the wind speed and direction, ground contour, plant height and fertiliser consistency are considered prior to determining the spreader settings and width of pass. For more details see the Support page.