Device for placing material on or beneath the soil surface and method for doing the same

A towable device for treating and maintaining turf, comprising:

• at least one roller and manifold assembly, said at least one roller and manifold assembly including a plurality of injection heads for directing periodic high pressure jets of liquid and at least one additive material into the ground, said jets of liquid having a discrete pulse duration, wherein the depth of penetration of the jets into the soil is a function of the pulse duration, wherein said plurality of injection head creates a discharge pattern greater than 30 inches in width and at least 1 inch in depth;
• a liquid supply system for supplying pressurized liquid to said at least one injection head;
• an additive supply system for introducing said at least one additive material to said liquid within said at least one injection head;
• and
• a control system for controlling discharge from said at least one injection head.