References
- Edwards , J.H. and Barber , S.A. 1976 . Nitrate uptake characteristics of corn roots at low N concentrations as influenced by plant age . Agron J. , 68 : 17 – 19 .
- Elliot , C.C. , Nelson , P.V. and Jackson , W.A. 1983 . Effects of ambient nitrate concentration and prior exposure to nitrate on net nitrate uptake by chrysanthemum . J. Amer. Soc. Hort. Sci. , 108 : 729 – 734 .
- Steingrobe , K. and Schenk , M.K. 1994 . A model relating the maximum nitrate inflow of lettuce (Lactuca sativa L.) to the growth of roots and shoots . Plant and Soil , 162 : 249 – 257 .
- Heins , B. and Schenk , M.K. 1986 . “ Nitrate‐uptake characteristics of roots as affected by nitrate supply ” . In Fundamental, Ecological and Agricultural Aspects of Nitrogen Metabolism in Higher Plants , Edited by: Lambers , H. , Neeteson , J.J. and Sulen , I. 41 – 45 . Dordrecht, , The Netherlands : Martinus Nijhoff Publishers .
- Deane‐Drurnmond , C.E. 1982 . Mechanisms for nitrate uptake into barley (Hordeum vulgare L. cv. Fergue) seedlings grown at controlled nitrate concentrations in the nutrient medium . Plant Sci. Letters , 162 : 249 – 257 .
- Goyal , S.S. and Huffaker , R.C. 1986 . A novel approach and a fully automated micro‐computer based system to study kinetics of NO3 ‐, NO2 ‐, and NH4 +transport simultaneously by intact wheat seedlings . Plant Cell Environ. , 9 : 209 – 215 .
- Thayer , J.R. and Huffaker , R.C. 1980 . Determination of nitrate and nitrite by high pressure liquid chromatography: comparison with other methods for nitrate determination . Anal. Biochem. , 102 : 110 – 119 .
- Yosizumi , K. , Aoki , K. , Matsuoka , T. and Asakura , S. 1985 . Determination of nitrate by a flow system with chemiluminescent NOx analyzer . Anal. Chem. , 57 : 737 – 740 .
- Lee , R.B. and Drew , M.C. 1986 . Nitrogen‐13 studies of nitrate fluxes in barley roots . J. Exp. Bot. , 37 : 1768 – 1779 .
- Cawse , P.A. 1967 . The determination of nitrate in soil solutions by ultraviolet spectrophotometry . Anal. , 92 : 311 – 315 .
- Chantarotwong , W. , Huffaker , R.C. , Miller , B.L. and Granstedt , R.C. 1976 . In vivo nitrate reduction in relation to nitrate uptake, nitrate content, and in vivo nitrate reductase activity in intact barley seedlings . Plant Physiol. , 57 : 519 – 522 .
- Grunau , J.A. and Swiader , J.M. 1989 . Ion chromatography in nutrient depletion studies: Measurement of very low nitrate concentrations . Commun. Soil Sci. Plant Anal. , 20 : 383 – 402 .
- Grunau , J.A. and Swiader , J.M. 1989 . “ Advantages and problems of ion chromatography for anion analysis in plant nutrition ” . In Advances in Ion Chromatography , Edited by: Cassidy , R.M. and Jandik , P. 361 – 389 . Franklin, MA : Century International .
- Cataldo , D.A. , Haroon , M. , Schrader , L.E. and Youngs , V.L. 1975 . Rapid colorimetric determination of nitrate in plant tissue by nitration of salicylic acid . Commun. Soil Sci. Plant Anal. , 6 : 71 – 80 .
- IMSL . 1988 . Fortran Computer Program for Fitting a Cubic Spline Function , Urbana, IL : International Mathematics and Science Library, University of Illinois .
- Youngdahl , L.J. , Pacheco , R. , Street , J.J. and Vlek , P.L.G. 1982 . The kinetics of ammonium and nitrate uptake by young rice plants . Plant and Soil , 69 : 225 – 232 .
- Bowman , D.C. , Paul , J.L. and Davis , W.B. 1989 . Nitrate and ammonium uptake by nitrogen‐deficient perennial ryegrass and Kentucky bluegrass turf . J. Amer. Soc. Hort. Sci. , 114 : 421 – 426 .
- Therios , I.N. , Weimbaum , S.A. and Carlson , R.M. 1979 . Nitrate compensation points of several plum clones and relationship to nitrate uptake effectiveness . J. Amer. Soc. Hort. Sci. , 104 : 768 – 770 .
- Warncke , D.D. and Barber , S.A. 1974 . Nitrate uptake effectiveness of four plant species . J. Environ. Qual. , 3 : 28 – 30 .
- Contribution from Hatch Project 65–332, University of Illinois Agricultural Experiment Station at Urbana‐Champaign, Urbana, IL.