Thanks in part to grower funding through the GRDC, a new spear point seeding system designed to make farming more productive and less costly is now being manufactured
Features of the new system include:
- a spear point with a new design for optimum wear in the abrasive soils of southern Australia
- the use of a replaceable tip with the tyne adaptor which lowers the replacement cost compared with the replacement cost for a large combined point
- 'Wingdings' (adaptors) suitable to mount the points on combine seed drills and airseeder cultivator bars plus a specially designed urethane seed boot for accurate seed placement.
The name ARP RRR comes from the 'three RRRs' involved in development — Rohan Rainbow of the South Australia Research and Development Institute, Brian Robotham, an agricultural research engineer with the Queensland Department of Primary Industries, and RIPPEX, a Queensland-based company with experience in the mining, earthmoving and agricultural industries.
The machine is being manufactured by Adelaide-based company, Agricultural Rubber and Plastics Pty Ltd, which also lends its initials to the name.
Mr Rainbow says the new point will boost both point life and seeding efficiency without causing soil smear in the point groove.
"The adaptor and seed boot can be easily removed if cultivation shares are to be fitted," he said.
Mr Rainbow's research had shown that spear-type points gave excellent crop emergence, growth and grain yields across a wide range of soil types and seeding conditions.
"In conventional direct drilling they have performed as well or better than wide combine shares especially when press wheels are used," Mr Rainbow said. "Basically their seed placement is also a lot more accurate than lucerne points."
The first series, ARP RRR02, fit John Shearer 580 and 620 series tynes, the John Deere 700 series and other tynes with similar point mounts. Adaptions for Napier, Connor Shea and many other tyne types are being developed.
The prototype points were field-tested this season by SARDI with very good results over a range of soil types — sandy soils at Wokurna, red brown earths at Hart, Yacka and Andrews, and black, self-mulching soils at Mintaro.