FERTILIZER SHANK FOR APPLYING SOLID MINERAL FERTILIZER IN THE FORM OF VERTICAL STRIP Russian patent published in 2005 - IPC

FIELD: agricultural engineering, in particular, subsurface application of solid mineral fertilizers.

SUBSTANCE: fertilizer shank has column-fertilizer guide and A-hoe of cultivator fixed in lower part of column-fertilizer guide. Reverse wedge functioning as slitter is positioned under A-hoe to improve cutting of stubble remains and prevent clogging. Formation in soil of fertilizers in the form of vertical strip is provided by means of adjustable skew slot. To do that, U-shaped plate is positioned in cavity of column-fertilizer guide for displacement along slot formed in front wall of column-fertilizer guide. Cheeks are attached to side walls of column-fertilizer guide for preventing U-shaped plate from longitudinal displacement. U-shaped plate is fixed by means of screw inserted into slot formed in front wall of column-fertilizer guide. Lock nut is located on screw. Vertical displacement of U-shaped plate allows positioning of fertilizer strip relative to day side of soil surface to be adjusted. Clogging with soil of skew adjustable slot formed in lower part of column-fertilizer guide on U-shaped plate at side of its skew slot is provided by means of pivotal valve equipped with counterweight. Valve upper part is made wider than column-fertilizer guide. Shank is fixed by means of bracket mounted in upper part of column-fertilizer guide. Fertilizers are delivered through column-fertilizer guide into slot defined by reverse wedge. Local application of mineral fertilizer in the form of vertical strip increases coefficient of utilization of nutritive substances by plants by 7-13%.

EFFECT: increased efficiency by improved cutting of stubble remains and increased coefficient of utilization of nutritive substances by plants.

4 cl, 4 dwg