depend on the crop and planting conditions suitable placement of outlets along extension 30 would result in a generally scattered seed and fertilizer delivery in behind each knife 10 in this case the complete width of soil could be planted roots in the complete width of soil may also be cut by the blade extension without being dragged and fouling the knife 10 the extension blade 30 may be positioned to travel under the path of the angled blade 14 of the adjacent knife 10 knives 10 are mounted to an implement or cultivator frame as in fig7 a wing section of the frame is illustrated in outline form additional central and wing sections are not shown the frame is carried on load bearing wheels not shown which support the frame in a raised position for travel and in operative position adjustment of the height of the frame in a known fashion accurately controls furrow depth depths may typcially range from u00bd inch to 4 inches or up to 6 inches alternatively a ground following linkage may be used to attach each knife to the frame with the depth being controlled by a wheel attached to each knife assembly in use the knifes 10 arranged in parallel fashion on an implement or overlapping arrangement on an angled draw bar are drawn by a tractor together with a seed carrier provided with reservoirs of seed and fertilizer material and a fluid delivery system operatively connected with the conduits 22 on the knives.