Search Results - "McPherson, J.K"

Biological activity and chemical isolation of root saponins of six cultivars of alfalfa (Medicago sativa L.) by Wyman-Simpson, C.L. (Oklahoma State Univ., Stillwater, OK (USA). Dept. of Biochemistry), Waller, G.R, Jurzysta, M, McPherson, J.K, Young, C.C

“…Wheat, cheat and Trichoderma viride bioassays were used to establish the relationship between the content of biologically active saponins in the roots and the…”
Get full text

The role of Rhus copallina in the dynamics of the forest-prairie ecotone in north-central Oklahoma [allelopathy, competititon] by Petranka, James W., McPherson, James K.

“…The functional role of Rhus copallina in the tension zone between forests and prairies and the mechanisms which allow clones of this species to replace climax…”
Get full text

Allelochemicals in soil from no-tillage versus conventional-tillage wheat (Triticum aestivum) fields by Cast, K.G. (Oklahoma State University, Stillwater, OK), McPherson, J.K, Pollard, A.J, Krenzer, E.G. Jr, Waller, G.R

“…Putative allelochemicals found in the soil of no-tillage and conventional-tillage wheat plots near Stillwater, Oklahoma, were obtained by a mild alkaline…”
Get full text

Geographic distribution of two-species of oaks in Oklahoma in relation to seasonal water potential and transpiration rates [Quercus velutina, Quercus marilandica] by Hall, Shelly L., McPherson, James K.

“…Field measurements of predawn and afternoon water potentials and transpiration rates of two species of deciduous oaks (Quercus velutina Lam. and Q. marilandica…”
Get full text

Factors limiting the distribution of Salix nigra by McLeod, K.W, McPherson, J.K

“…Soil moisture, nutrient content, structure and aeration do not appear to limit the distribution of adult black willows in Oklahoma. Instead, the species…”
Get full text