References
- Barber , S.A. 1962 . A diffusion and mass‐flow concept of soil nutrient availability . Soil Sci. , 93 : 39 – 49 .
- Bouldin , D.R. 1961 . Mathematical description of diffusion processes in the soil‐plant system . Soil Sci. Soc. Amer. Proc. , 25 : 476 – 480 .
- Bouldin , D.R. 1989 . A multiple ion uptake model . J. Soil Sci. , 40 : 309 – 319 .
- Brar , G.S. , McMichael , B.L. and Taylor , H.M. 1991 . Hydraulic conductivity of cotton roots as influenced by plant age and rooting medium . Agron. J. , 82 : 264 – 266 .
- Fiscus , E.L. 1972 . In situ measurement of root water potential . Plant Physiol. , 50 : 191 – 193 .
- Fiscus , E.L. 1977 . Determination of hydraulic and osmotic properties of soybean root systems . Plant Physiol. , 59 : 1013 – 1020 .
- Georgen , P.G. , Davis‐Carter , Jessica and Taylor , H.M. 1991 . Root growth and water extraction patterns from a calcic horizon . Soil Sci. Soc. Amer. J. , 55 : 210 – 215 .
- Hoagland , D.R. and Arnon , D.I. 1938 . The water culture method for growing plants without soil , California Agric. Exp. Sta. . Circ. 347
- Kevekordes , K.G. , McCully , M.E. and Canny , M.J. 1988 . Late maturation of large metaxylem vessels in soybean roots:Significance for water and nutrient supply to the shoot . Ann. Bot. , 62 : 105 – 117 .
- Olsen , S.R. , Kemper , W.D. and Jackson , R.D. 1962 . Phosphate diffusion to plant roots . Soil Sci. Soc. Amer. Proc. , 26 : 222 – 227 .
- Radin , J.W. , Mauney , J.R. and Kerridge , P.C. 1989 . Water uptake by cotton roots during fruit filling in relation to irrigation frequency . Crop Sci. , 29 : 1000 – 1005 .
- St. Aubin , G. , Canny , M.J. and McCully , M.E. 1986 . Living vessel elements in the late metaxylem of sheathed maize roots . Ann. Bot. , 58 : 577 – 588 .
- Sanderson , J. , Whitebread , F.C. and Clarkson , D.T. 1988 . Persistent xylem cross‐walls reduce axial hydraulic conductivity in the apical 20 cm of barley seminal root axes; implications for the driving force for water movement . Plant, Cell and Environment , 11 : 247 – 256 .
- Taylor , H.M. and Klepper , B. 1975 . Water uptake by cotton root systems:An examination of assumption in the single root model . Soil Sci. , 120 : 57 – 67 .
- Tennant , D. 1975 . A test of a modified line intersect method of estimating root length . J. Ecol. , 63 : 995 – 1001 .
- Yamauchi , A. , Taylor , H.M. , Upchurch , D.R. and McMichael , B.L. 1990 . Axial resistance to water flow of intact cotton taproots , Lubbock, TX 79401 : Cropping Systems Research Laboratory, Route 3, Box 215 . Manuscript available from D.R. Upchurch