Photograph of Basel-bark application, using 2 3/4 gallon of low volatile 2-4-5, T ester (4 lbs. acid per gallon material used) in 100 gallon of diesel oil. The spray being applied so as to completely encircle and wet the point of runoff onto the soil the lower 12 in. of each plant. Equipment used was a John Bean powered sprayer. The brush and trees were blackjack, post and white oak, hickory, elm, persimmon and dogwood.

Photograph of a John Bean power sprayer equipped to make basal-bark applications on brush and trees. The person in the picture is Harry M. Elwell, Research Agronomist for Field Crop Research, US Department of Agriculture [USDA], located at the Red Plains Conservation Experiment Station, Guthrie, OK. OK-11-10.

Photograph of basal-bark application using 2-3/4 gallons of a low volatile 2-4-5-T herbicide ester (4 pounds acid per gallon of material used) in 100 gallons of diesel oil. The spray is being applied so as to completely encircle and wet to the point of creating run-off onto the soil the lower 12 inches of each plant. The equipment used was a John Bean power sprayer. The brush and trees were blackjack, post and white oak, hickory, elm, persimmon and dogwood.

Photograph of a typical view of brush and tree cover often occupying a site that will produce good grass with proper herbicidal treatment. OK-11-9.

Photograph of basal-bark application using 2¾ gallon of a low-volatile 2-4-5T ester (4 pounds acid per gallon of material used) in 100 gallons of diesel oil. The spray is applied so as to completely encircle and wet the lower 12 inches of each plant even to the point of run-off onto the soil. The equipment used was a John Bean-powered sprayer. The brush and trees were blackjack, post and white oak, hickory, elm, persimmon and dogwood. OK-11-7.

Photograph of basal-bark application using 2¾ gallon of a low-volatile 2-4-5T ester (4 pounds acid per gallon of material used) in 100 gallons of diesel oil. The spray is applied so as to completely encircle and wet the lower 12 inches of each plant even to the point of run-off onto the soil. The equipment used was a John Bean-powered sprayer. The brush and trees were blackjack, post and white oak, hickory, elm, persimmon and dogwood. OK-11-8.

Photograph of a typical view of brush and tree cover often occupying the site that will produce good grass with proper herbicidal treatment. OK-11-9.

Photograph of basal-bark application using 2¾ gallon of a low-volatile 2-4-5T ester (consisting of 4 pounds acid per gallon of material used) in a solution of 100 gallons of diesel oil. The spray is being applied so as to completely encircle the lower 12 inches of each plant and wet them to the point of runoff onto the soil. The equipment used was a John Bean-powered sprayer. The brush and trees were blackjack, post, white oak, hickory, elm, persimmon and dogwood. OK-11-7.

Photograph of district Conservationist Kenneth Yoakum and Inspector Doyle Abel looking over a new sediment tower with trash guard designed to keep beavers from clogging towers, 1972. OK-4114-15.