Revegetation of saline oil well reserve pits using grasses and shrubs with or without mulching and irrigation, near Big Lake, Texas, USA
Published source details
McFarland M.L., Ueckert D.N. & Hartmann S. (1987) Revegetation of oil well reserve pits in west Texas. Journal of Range Management, 40, 122-127
Published source details McFarland M.L., Ueckert D.N. & Hartmann S. (1987) Revegetation of oil well reserve pits in west Texas. Journal of Range Management, 40, 122-127
On-site disposal of drilling fluids resulted in substantial increases in sodium adsorption ratios (SAR) and concentrations of soluble salts (primarily sodium chloride) in oil well reserve pit soils on rangeland in the semi-arid Edwards Plateau area near the town of Big Lake, Texas (southwest USA). This study evaluated planting of four grasses and two shrubs, with or without mulching and irrigation, for vegetation restoration.
Experiments were undertaken on two reserve pits 10 km east of Big Lake (Ferguson sites) and two 32 km to the west (Jackson sites). Each pit was covered 1 month prior to seedbed preparation (standard procedure: crawler-tractor then disked). Each was divided into 6 blocks containing 6.1 x 6.1 m plots. Treatments (3 replicates of each) were randomly assigned within each block (applied on 28 April 1981 at Ferguson and 17 March 1982 at Jackson):
Seedlings were counted in 10 (0.25-m²) quadrats/plot 2 months after planting, and also 6 and 16 months after planting (Ferguson) and after 7 months (Jackson) when standing crop was also estimated. Soil samples were collected on each pit and from adjacent uncontaminated areas for analysis.