A sheath for a soil working roller includes a plurality of sheath segments mounted or mountable to surround a roller body of the soil working roller and following one another in the circumferential direction. A plurality of roller tools is arranged on an outer side of the sheath segments and at least one part of the roller tools includes an interchangeable holder mounted on a respective sheath segment and a replaceable tool detachably mounted or mountable on the interchangeable holder. A fastening opening is formed in the interchangeable holder for accommodating a fastening shaft of a replaceable tool mounted or to be mounted on the interchangeable holder. An impacted tool through opening is provided in association with the at least one interchangeable holder in the sheath segment supporting the same for engaging the fastening shaft of the replaceable tool mounted on the interchangeable holder with an impacted tool.

A sheath for a soil working roller includes a plurality of sheath segments mounted or mountable to surround a roller body of the soil working roller and following one another in the circumferential direction. A plurality of roller tools is arranged on an outer side of the sheath segments and at least one part of the roller tools includes an interchangeable holder mounted on a respective sheath segment and a replaceable tool detachably mounted or mountable on the interchangeable holder. A fastening opening is formed in the interchangeable holder for accommodating a fastening shaft of a replaceable tool mounted or to be mounted on the interchangeable holder. An impacted tool through opening is provided in association with the at least one interchangeable holder in the sheath segment supporting the same for engaging the fastening shaft of the replaceable tool mounted on the interchangeable holder with an impacted tool.

A scarifier for raking and loosening soil includes a frame having a base plate and configured to rotate about a central axis, a rod coupled to the base plate and arranged centrally to the base plate and extending in an axial direction and adapted to be inserted inside the soil to support the scarifier and at least one tool coupled to the base plate and configured to extend inside the soil to loosen the soil.

A scarifier for raking and loosening soil includes a frame having a base plate and configured to rotate about a central axis, a rod coupled to the base plate and arranged centrally to the base plate and extending in an axial direction and adapted to be inserted inside the soil to support the scarifier and at least one tool coupled to the base plate and configured to extend inside the soil to loosen the soil.

In one aspect, a system for monitoring disc conditions of an agricultural implement. The system includes a plurality of discs configured to penetrate through a soil surface during the performance of an agricultural operation, and a sub-surface density sensor configured to generate data associated with a density of one or more sub-surface features included within a lateral section of a field. The lateral section encompasses an expected location of a sub-surface portion of each disc of the discs. The system also includes a computing system communicatively coupled with the sub-surface density sensor. The computing system is configured to determine a sub-surface density profile extending across the lateral section of the field based on the data received from the sub-surface density sensor, and determine an operating condition of at least one disc of the plurality of discs based at least in part on the sub-surface density profile.

In one aspect, a system for monitoring disc conditions of an agricultural implement. The system includes a plurality of discs configured to penetrate through a soil surface during the performance of an agricultural operation, and a sub-surface density sensor configured to generate data associated with a density of one or more sub-surface features included within a lateral section of a field. The lateral section encompasses an expected location of a sub-surface portion of each disc of the discs. The system also includes a computing system communicatively coupled with the sub-surface density sensor. The computing system is configured to determine a sub-surface density profile extending across the lateral section of the field based on the data received from the sub-surface density sensor, and determine an operating condition of at least one disc of the plurality of discs based at least in part on the sub-surface density profile.

A knife for a cylindrical rotor includes at least two sharpened edges adapted to cut materials during land clearing or mulching. The knife further includes a top surface and a bottom surface wherein the knife is shaped as an inverted frusto-square pyramid. The knife may further include a tapered sidewall defining one sharpened edge. The angle may be about 30 to about 60. The knife may have four sharpened edges. The knife further may include an aperture that may be equidistant from the four sharpened edges. The knife is adapted to be moved when one sharpened edge becomes dull. The knife may further include a conical countersunk aperture. The knife may have a thickness of about to about .

A knife for a cylindrical rotor includes at least two sharpened edges adapted to cut materials during land clearing or mulching. The knife further includes a top surface and a bottom surface wherein the knife is shaped as an inverted frusto-square pyramid. The knife may further include a tapered sidewall defining one sharpened edge. The angle may be about 30 to about 60. The knife may have four sharpened edges. The knife further may include an aperture that may be equidistant from the four sharpened edges. The knife is adapted to be moved when one sharpened edge becomes dull. The knife may further include a conical countersunk aperture. The knife may have a thickness of about to about .