A portable tillage profiler (PTP) was constructed using a laser distance sensor, a linear actuator, a portable PC, and a lightweight aluminum frame that can quickly and accurately measure aboveground and belowground soil disruption caused by tillage. A laboratory experiment was conducted that determined that soil color did not detrimentally affect the PTP, with expected vertical errors of 2.3 m...

Soil has elastic-plastic deformation under vibrating working condition. And the acting force between the soil and the vibrating subsoiler parts is of complication. In order to study the effect of the material acting force to the vibrating subsoiler system kinetics features, this paper establishes the vibrating subsoiler system mechanics model considering material acting force. It adopts numeric...

:‘)ii$ Machine piling of slash and brush after harvest is commonly practiced when establishing new conifer plantations. However, it can result in increased soil bulk density, decreased soil macroporosity, and increased soil strength, thus reducing conifer root development and above-ground growth (Froehlich 1979, Sands and Bowen 1978). Because natural recovery of soil from compaction is slow, wa...

Agricultural subsoilers are used to break the hardpans below level of tillage depth. Weight reduction without compromising safety is one primary design objectives subsoiler. The thickness, length curve, and width shank all critical parameters in designing a straight Identifying significance geometrical maximizes structural minimizes weight. An analysis parametric correlation between output inpu...

A new subsoiler with placoid scale microstructure bionic surface was proposed which mimicked shark skin to reduce tillage resistance and soil adhesion during subsoiling cultivation. The contour curves of on were fitted, two kinds continuous discontinuous microstructures designed fabricated, respectively. effects different surfaces investigated by finite element simulation experiment. results in...

The factor of preserving the fertile soil layer is most relevant on sloping lands, since streams formed by melt water and precipitation wash out nutrients humus, also destroy surface. To prevent these processes, anti-erosion working units are used. purpose research to study effect tillage unit a flat-cutter-subsoiler fertilizer with simultaneous application granular fertilizers its filtration p...