Experiments were conducted in a field and a soil bin to study soil and straw displacement and straw incorporation by a sweep-type tillage tool. The experimental factors included number of sweeps (one and three sweeps), lengths of flat straw (100, 175, and 250 mm), and residue conditions (with standing stubble and without standing stubble). The soil bin and the field had similar soil texture with high percentage of sand particles. The sweep was 325 mm wide, and it was operated at a constant speed of 5 km/h and depth of 100 mm. Point tracers were used to measure soil and straw displacement in the travel direction of the sweep. The results showed that soil and straw displacements were highly variable. With increasing length of straw, the soil displacement decreased, while the straw displacement increased. Standing stubble significantly reduced soil displacement, but did not significantly affect the straw displacement. Longer straws were less incorporated into the soil than shorter straws. More straw was incorporated in the soil bin condition than in the field condition. For soil displacement, an increased value was observed when using three sweeps per operation as compared with using one sweep due to interactions between adjacent sweeps in the former operation. However, this interaction effect was not found for the straw displacement.
|Original language||English (US)|
|Journal||Canadian Biosystems Engineering / Le Genie des biosystems au Canada|
|State||Published - Dec 1 2007|
All Science Journal Classification (ASJC) codes
- Mechanical Engineering