2012 Volume 74 Issue 1 Pages 66-71
The effect of changing the shape of rear disks on the performance of two prototypes of disk cultivator-ridger was investigated in three fields planted with soybean. The following results were found. (1) Using notched disks as rear disks instead of smooth-edged disks resulted in better soil pulverizing performance under wet soil conditions, since fewer large clods were produced by the scraping of stuck soil on the surface of notched disks. (2) Using convex notched disks as rear disks instead of concave notched disks resulted in better soil pulverizing performance, fewer buried and lodged soybean plants rate. However, convex notched disks tended to compress the soil under wet soil conditions.
