This article from 2014 has been recovered from the closed ctfeurope.com site. Sorry for any links not working.
Why are wide span tractors interesting?
Agricultural machines have grown in size over the past 60 years. They are now so heavy that they damage the soil in the field, and they take up lots of space on roads.
Wide Span machinery solves both these two problems.
A wide span prototype tractor ASA-Lift WS 9600 has been built in a projekt lead by the Kjeldahl farm who plans to grow all crop on on the farm in 9 m wide CTF beds.
Video – WS 9600 – 2013 Field test.
The ASA-Lift WS 9600 WS tractor has been cultivating and harvesting onions in the first season of field work. The tractor has been developed by ASAS-Lift joint with Aarhus University and the Kjedahl Farm located on the Island of Samsø. The Danish Market Development Fund has supported the development
As part of my PhD project at Aarhus University. I will do a environmetal and economical assessments of growing onions in wide beds compared to traditional growing practices. I have also interviewed potential future users in several countries about which features they will like to see on future wide span tractors.
NEW Brazilian sugar cane WS maschine
The idea behind this newly developed 9 m WS tractor is much in line with the reasons for building the ASA-Lift WS tractor. However this Brazilian development is not made for vegetables but for sugar cane, a crop where experiences from Australia show great benefits of introducing CTF. With the Wide Span tractor the tracked area can be reduced to only 13%. The tractor is invented by The Brazilian Bioethanol Science and Technology Laboratory (CTBE).