A cultivator has soil working blade members mounted on a horizontal shaft which is driven to rotate the members forwardly through the soil in the normal direction of travel. A baffle comprised of screen segments are mounted on the cultivator frame to partially surround the blade members. The screen segments are biased about respective pivots and a rod grating is connected to the baffle to extend downardly immediately to the rear of the blade members. The rear screen segment has V-shaped guides to ridge the soil. A hopper communicates with dosing outlets, each outlet being a nozzle device that extends between a pair of guides. Each nozzle device is pivotable to either one of two positions for planting tubers deep or shallow. A pair of rear wheels is connected to the rear of the frame and the wheels are drivenly connected to dosing conveyors leading to the outlets. An adjusting device is associated with each wheel to raise and lower the soil working blade members.

An elongated downwardly opening housing is provided for lengthwise advancement over the ground and includes mounting structure for dependingly supporting the housing from a farm implement tool bar. The housing includes front and rear transverse journaled horizontal shafts each having a pair of axially spaced circumferentially spiked wheels mounted thereon for rotation therewith. Corresponding ends of the shafts project outwardly through opposite sides of the housing and have aligned sprocket wheels mounted thereon. The sprocket wheel carried by the forward shaft is at least slightly greater in diameter than the sprocket wheel carried by the rear shaft and an endless chain is trained over the sprocket wheels drivingly connecting the forward shaft or front shaft to the rear shaft. As the housing moves over the ground along rows in which crops are to be planted the spiked wheels or disks carried by the front shaft are turned by their engagement with the ground and the soil over which the spiked disks carried by the front shaft roll is loosened. Then, as the same strip of ground surface is contacted by the spiked disks carried by the faster rotating rear shaft, the loosened soil is further loosened and mulched. In addition to this structure, the housing includes a sheet of flexible resilient material extending between the sides of the housing forming the front, top, and rear walls therefor. At the rear end of the housing, this sheet of material projects downwardly below the sides of the housing to define a flexible ground sweep. Additionally, the housing is provided with chemical spray discharge structure whereby a suitable weed retardant or other chemical may be sprayed onto the ground or soil being acted upon by the spiked disks carried by the front shaft. One form of the invention disclosed is mounted for vertical floating movement to compensate for irregular ground surfaces and includes adjustable ground engaging gauge wheels.

A light soil tillage implement is adapted to be drawn by a farm tractor, and is designed to perform a light tillage immediately preceeding fertilizing, planting, and/or other farming operations. The implement comprises a frame having support wheels thereon engaging the ground, one or more tool bars having ground working tools thereon, and a mounting mechanism for each tool bar connecting each tool bar with the frame. Each mounting mechanism comprises a series of linkage elements which resiliently bias the working tools downwardly into the soil when the implement is in a tilling position. The mounting mechanism is adapted to positively lift the tools and tool bars out of engagement with the ground when it is desired to transport the implement, and further individually mounts each tool bar in a manner which allows the same to laterally rotate about a central point thereon in order to follow the contour of the soil independent from the other tool bars. Additional equipment for the farming operations is connected to the tillage implement by a hitching mechanism to allow lateral rotation thereof with respect to the tillage implement, and allow the tillage implement to be used in tandem with trailing farming operations on uneven ground.

An implement, preferrably a harrow having a row of soil working members mounted on upwardly extending shafts, has spraying nozzles for dispensing material on the ground adjacent the rear of the soil working members. The nozzles communicate with liquid material under pressure. The implement is coupled to a tractor and the operator of the tractor can monitor the material being sprayed by various devices in an electrical circuit that leads to the tractor. Wires are positioned to be bridged by the spray and indicator lights on the tractor dash board provide a visual signal when material is sprayed by each nozzle. Similarly, a micro switch or camera, or other actuation means can be located adjacent each nozzle to provide a signal for each nozzle spray. The nozzles communicate with an elongated pipe and the pipe is supported on the implement frame with adjusting means to change the direction of spray by the nozzles. A supporting roller member is connected at the rear of the frame and the pipe, with nozzles, is positioned between the soil working members and the roller member.

Liquid applications of materials such as herbicides usually are broadcast over the field and then incorporated by harrowing or the like. The present device utilizes a plurality of open based boxes having a rotary cultivator therein with a spray nozzle attached to a supply of liquid chemical under pressure thus restricting the application of the chemical to a band the width of the box and incorporating it at the same time. Rake teeth smooth out the soil behind each applicator and a seeding or planting machine may be hitched behind the incorporator followed by a packer so that the entire chemical treatment, incorporation thereof, planting and packing can be undertaken in one pass over the field.