Photograph of native grass planting on 5-B soil [sic; Type B?] in 1957. Shows slick spot where the vegetation failed to survive.

Photograph of native grass planting on 50-B soil in 1957. The slickspot shown is where vegetation failed to take or survive.

Photograph of a four inch square sod to placed in a phytometer. OK-1466-8.

Photograph of grasses. Little bluestem in phytometer,* clipped at 3 different levels weekly during growing season. OK-1466-7. * a device that measures a plant’s transpiration (i.e., water movement through the plant including evaporation from its aerial parts) by placing it in a sealed soil-containing vessel so that water can escape only through the plant’s transpiration.

Photograph of little bluestem in phytometer, clipped at 3 different levels weekly during growing season.

Photograph of a phytometer, 4 inch square rod to be placed in the phytometer.

Photograph of pasture spraying test plot. Area on right sprayed with 1 lb. low vol-ester in 3 gallon of water, area on left not sprayed.

Photograph of native grass planting.

Photograph of an exclosure fence at the end of growing season on Red Clay Prairie site.

Photograph of native grass on slick spot. Follow up of OK-1002-8.

Photograph of brush control, this strip, 150 feet wide and one half mile long, sprayed in 1959 and again in 1960.

Photograph of a follow up of OK-1002-1. Brush sprayed in May 1957 with 2-4-5-T.

Photograph of brush sprayed with 2-4-5T.

Photograph of grasses. Follow-up of OK-1000-12. Native grass seeding on complex. OK-1467-2.

Photograph of grasses. Follow-up of OK-1000-9. Native grass seeding made in 1954. This is the first year out of a CR [cost reimbursement] contract. OK-1466-11.

Photograph of grasses. Follow-up of OK-1001-2. Native grass seeding on claypan. OK-1467-2. OK-1467-4.

Photograph of of grasses. Follow-up of OK-1000-4. Native grass mixture seeded in the spring of 1957. OK-1466-10.

Photograph of grass plantings. Follow-up of OK-487-10. Native grass plantings of 1957. OK-1467-3.

Photograph of a gully before shaping. Note dead mesquite killed by basal treatment.

Photograph of land clearance and shrub control. Follow-up of OK-1002-3. Land cleared with a saw and later sprayed. OK-1467-7.

Photograph of land clearance and brush control. Follow up of 1002-2. Brush sprayed with 2-4-5T herbicide in 1954. OK-1467-6.

Photograph of more brush control. A follow-up of OK-1002-1. Brush sprayed in May 1957 with 2-4-5T herbicide. OK-1467-5.

Photograph of land clearance. Follow-up of OK-1002-7. Timber cleared in 1951 and sprayed in 1959. OK-1467-8.

Photograph of native grass mixture seeded in spring of 1957