Minimum till seeding knife
View Patent ↗The present invention relates to a knife for and a method of zero till or minimum till seeding and fertilizing. The knife is particularly adapted for dry land conditions producing minimum solid disturbance and very shallow operation. The knife has a high penetration angle preferably of 45 degrees which permits the blade to enter high trash surface cover with little tendency to plug due to trash accumulation. The blade has a forward angle of attack, the lower cutting edge advancing before the upper cutting edge, serving to make a clean cut in the soil surface without accumulating trash. Seed and/or fertilizer conduits are attached to or incorporated in the trailing face of the blade in which the outlets may be spaced for controlled placement of the materials. By the method a furrow is cut having a substantial transverse component in an operation with a substantial forward component. A preferred embodiment includes a horizontal extension blade for cutting a horizontal swath at a shallow depth through weed growth. Conduits may be secured to the extension to allow greater separation and control of material placement. The knives may be arranged in overlapping configuration on the draw bar to affect weed cutting, seeding and fertilizing of a complete with of soil in a single pass.
1. A procedure for planting seeds in the ground, comprising:
creating a slit-opening in the ground, by drawing an angled knife blade having a knife-edge through the ground;
simultaneously depositing the seed in the slit opening, right behind the angled knife blade;
maintaining the angled knife blade at a depth of no more than about 15 cm vertically down into the ground;
while the knife blade is being drawn through the ground, maintaining the knife-edge at an angle relative to the ground; wherein:
in front view relative to the direction in which the knife blade is drawn, the knife-edge makes an angle relative to the ground, termed the side-slope-angle, of between 30 and 60 deg to the horizontal, and
in lateral elevation, the knife-edge makes an angle to the horizontal, termed the forward-pitch-angle, of between 30 and 60 degrees, and the knife-edge slopes forwards in that view, in that deeper portions of the knife-edge in the ground lie ahead of more shallow portions of the knife-edge.
2. The procedure as recited in claim 1 , wherein the knife edge is a lowest most point of all vertical cross-sections through the blade, the vertical cross-sections in parallel with the direction of travel.
3. The procedure as recited in claim 1 , wherein the act of creating the slit opening includes engaging the knife-edge with the ground before any other remaining portion of the angled knife blade.
4. The method as recited in claim 1 , wherein the step of creating the slit opening includes directing the ground in an upward direction from the knife-edge.