RocksnRoses
Senior Member
- Joined
- Jun 14, 2008
- Messages
- 770
- Location
- South Australia
- Occupation
- Owner operater crushing & contracting business
In South Australia and southern Wesern Australia, a percentage of farming land consists of non wetting sand. This sand has very little goodness, repels water and drifts extensively in our hot dry climate with frequent strong winds. In most cases, there is good clay underneath this sand, varying in depth from three or four inches, to three or four feet, or even more. It has been found over the years, that by combining this clay with the sand, the sand takes the water in, becomes much more productive and most of all, stops it from drifting. Several methods are used to achieve this.
If the clay is reasonably shallow, a delver is used, although this one can go quite deep.
http://www.savannahglobal.com/cgiscripts/sfeframes.pl?display=h11462
Other methods used are normal elevating scrapers and especially constructed scrapers that are much wider and shallower so that they can cover the country quicker and are pulled with agricultural tractors.
Another method is by using a machine called a Claymate which was manufactured here, but has since gone out of production. It operates like a small scraper, pulled with an agricultural tractor, but instead of an elevator, a rotating drum with teeth on it is mounted just above the blade, spinning fairly fast and it chops and throws the clay in to an enclosed hopper, which holds between eight and twelve tonnes, depending on the size of the machine. When the hopper is full, the machine is taken to the area to be spread, the hopper is raised hydraulically and the chopped clay slides out on to two heavy duty spinners, similar to a fertiliser spreader and is spread on to the sand. The only drawback with this machine is, that the clay has to be dry, which makes it very much a summer operation.
Our part in this, is that we have to open up clay pits, by pushing the sand off an area approximately 60 metres x 40 metres, down to the clay, so that they can rip and load the clay. When they have finished, the sand has to be put back and clayed as well, as these pits are dug in the farmers paddocks, close to the area to be spread. We open and close quite a few of these pits every year, between January and April.
Here are some pics of pushing the sand off the clay and one of the farmer's Challenger and Claymate that we work for. The track tractors work the best in the soft boggy sand.
If the clay is reasonably shallow, a delver is used, although this one can go quite deep.
http://www.savannahglobal.com/cgiscripts/sfeframes.pl?display=h11462
Other methods used are normal elevating scrapers and especially constructed scrapers that are much wider and shallower so that they can cover the country quicker and are pulled with agricultural tractors.
Another method is by using a machine called a Claymate which was manufactured here, but has since gone out of production. It operates like a small scraper, pulled with an agricultural tractor, but instead of an elevator, a rotating drum with teeth on it is mounted just above the blade, spinning fairly fast and it chops and throws the clay in to an enclosed hopper, which holds between eight and twelve tonnes, depending on the size of the machine. When the hopper is full, the machine is taken to the area to be spread, the hopper is raised hydraulically and the chopped clay slides out on to two heavy duty spinners, similar to a fertiliser spreader and is spread on to the sand. The only drawback with this machine is, that the clay has to be dry, which makes it very much a summer operation.
Our part in this, is that we have to open up clay pits, by pushing the sand off an area approximately 60 metres x 40 metres, down to the clay, so that they can rip and load the clay. When they have finished, the sand has to be put back and clayed as well, as these pits are dug in the farmers paddocks, close to the area to be spread. We open and close quite a few of these pits every year, between January and April.
Here are some pics of pushing the sand off the clay and one of the farmer's Challenger and Claymate that we work for. The track tractors work the best in the soft boggy sand.