Equipment for Incorporation of Herbicides

Abstract

Evaluations were made of the α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin) distribution patterns produced by eight incorporating implements. The power rotary cultivator concentrated the trifluralin in the top inch when operating at a 4-inch depth, while the disk, operated at the same depth, concentrated the trifluralin at a point 2 to 3 inches below the surface. All the remaining implements resulted in more than 80% of the recovered trifluralin in the top inch, except for isolated treatments with the Richardson and Lilliston tools. Surface applications resulted in less trifluralin recovery than from any implement. The disk resulted in the highest recovery and was two to three times greater than the recovery from the surface application. The recovery from the Richardson, Lilliston, and Ro-Wheel was 1.5 to 2 times greater than the recovery from the Mix-A-Product, field cultivator, and spike harrow.