1. A TILLAGE TOOL PARTICULARLY FOR USE BETWEEN PLANT OR SEED ROWS COMPRISING A CROSS MEMBER ADAPTED TO BE SECURED TO A PULLING VEHICLE, A HOLDER SECURED TO AND ADJUSTABLY MOUNTED ABOVE AND BELOW SAID CROSS MEMBER BY CLAMPING MEANS, A SUBSTANTIALLY VERTICALLY DISPOSED BRACKET DISPOSED SPACED APART FROM SAID CROSS MEMBER, LINKAGE MEANS CONNECTING SAID BRACKET WITH SAID HOLDER FOR A VERTICAL ADJUSTMENT MOVEMENT OF SAID BRACKET, A VERTICAL GUIDE SECURED TO SAID BRACKET, AN ANGULAR MEMBER GUIDED FOR VERTICAL ADJUSTMENT IN SAID VERTICAL GUIDE, AN ARM SECURED TO SAID CLAMPING MEANS AND EXTENDING TOWARD SAID BRACKET, SPRING MEANS SECURED TO SAID ANGULAR MEMBER AND TO SAID ARM, RESPECTIVELY, TENDING TO RETAIN SAID BRACKET IN ITS LOWERMOST POSITION, A PLURALITY OF ROLLERS TILLERS, MEANS FOR TURNABLY SUSPENDING SAID ROLLER TILLERS FROM THE LOWER PORTION OF SAID BRACKET, SAID ROLLER TILLERS BEING OF A WIDTH SMALLER THAN THE DISTANCE BETWEEN A PAIR OF ADJACENT PLANT ROWS, AND SAID ROLLER TILLERS BEING INDEPENDENTLY TURNABLY SUSPENDED FROM SAID BRACKET, MEANS FOR ADJUSTING THE RELATIVE DISTANCE BETWEEN SAID ROLLER TILLERS, A GROUP OF ROLLER TILLERS COMPRISING AT LEAST TWO TILLER ROLLERS IS COORDINATED TO EACH PLANT ROW, A DRAW BAR, LATERAL ARMS CONNECTING SAID DRAW BAR WITH SAID CROSS MEMBER, SAID ROLLER TILLERS HAVING AN AXLE DISPOSED OBLIQUELY TOWARD THE SURFACE OF THE GROUND, MEANS FOR ADJUSTING THE ANGULAR POSITION OF SAID AXLE OF SAID ROLLER TILLERS, AND EACH OF SAID ROLLER TILLERS HAVING AN AXLE, AND SAID AXLES OF SUCCESSIVE ROLLER TILLERS BEING SPACED APART SUCH THAT THE PERIPHERAL CIRCLES OF SAID ROLLER TILLERS OVERLAP EACH OTHER.