Correlation of solution and extractable phosphorus with vegetative growth of teff

References

• Lindsay , W.L. and Vlek , P.L.G. 1977 . “ Phosphate minerals ” . In Minerals in Soil Environment , Edited by: Dixon , J.B. and Weed , S.B. 639 – 672 . Madison , WI : Soil Science Society of America .
   Google Scholar
• Sample , E.C. , Soper , R.J. and Racz , G.J. 1980 . “ Reactions of phosphate fertilizers in soils ” . In The role of Phosphorus in Agriculture , Edited by: Khasawneh , F.E. , Sample , E.C. and Kamprath , E.J. 263 – 310 . Madison , WI : American Society of Agronomy .
   Google Scholar
• Sharpley , A.N. , Jones , C.A. , Gray , C. and Cole , C.V. 1984 . A simplified soil and plant phosphorus Model. II. Prediction of labile, organic and sorbed phosphorus . Soil Sci. Soc. Am. J. , 48 : 805 – 809 .
   Web of Science ®Google Scholar
• Hsu , P.H. 1964 . Adsorption of phosphate by aluminum and iron in soils . Soil Sci. Soc. Am. Proc. , 28 : 474 – 478 .
   Google Scholar
• White , R.E. 1981 . “ Retention and release of phosphate by soil and soil constituents ” . In Soils and Agriculture , Edited by: Tinker , P.B. 71 – 114 . New York , NY : John Wiley and Sons .
   Google Scholar
• Berkheiser , V.E. , Street , J.J , Rao , P.S.C. and Yuan , T.L. 1980 . Partitioning of inorganic orthophosphate in soil‐water systems . C.R.C. Critical Reviews in Environmental Control , 10 : 179 – 224 .
   Web of Science ®Google Scholar
• Coleman , R. 1945 . The mechanism of phosphate fixation by montmorillonite and kaolinite clays . Soil Sci. Soc. Am. Proc. , 9 : 72 – 78 .
   Google Scholar
• Black , C.A. 1943 . Phosphate fixation by kaolinite and other clays as affected by pH, phosphate concentration and time of contact . Soil Sci. Soc. Am. Proc. , 7 : 123 – 133 .
   Google Scholar
• Sundars , W.M.H. 1964 . Phosphate retention by New Zealand soils and its relation to free sesquioxides, organic matter and other soil properties . N. Z. J. Agric. , 8 : 30 – 57 .
   Google Scholar
• Schofield , R.K. 1955 . Can a precise meaning be given to ‘available’ soil phosphorus? . Soil & Fert. , 18 : 373 – 375 .
   Google Scholar
• Singh , B.B. and Jones , J.P. 1977 . Phosphorus sorption isotherms for evaluating phosphorus requirements of lettuce at two temperature regimes . Plant Soil , 46 : 31 – 44 .
   Web of Science ®Google Scholar
• Ballaux , J.C. and Peaslee , D.E. 1975 . Relationships between sorption and desorption of phosphorus by soils . Soil Sci. Soc. Am. Proc. , 39 : 275 – 278 .
   Web of Science ®Google Scholar
• Fox , R.L. and Kamprath , E.J. 1970 . Sorption isotherms for evaluating the phosphate requirements of soils . Soil Sci. Soc. Am. Proc. , 34 : 900 – 906 .
   Google Scholar
• Tiarks , A.E. 1982 . Phosphorus sorption curves for evaluating phosphorus requirements of loblolly pine (Pinus taeda) . Commun. Soil Sci. Plant Anal. , 13 : 619 – 631 .
   Web of Science ®Google Scholar
• MacFarlane , M. and Walmsley , D. 1977 . Effect of soil solution phosphorus in volcanic ash soils on the response of tomato (Lvcooersium esculentum) to added phosphate . Plant Soil. , 47 : 547 – 558 .
   Web of Science ®Google Scholar
• Langmuir , I. 1918 . The adsorption of gases on plane surfaces of glass, mica and platinum . J. Am. Chem. Soc. , 40 : 1361 – 1403 .
   Web of Science ®Google Scholar
• Olsen , S.R. and Watanabe , F.S. 1957 . A method to determine a phosphorus adsorption maximum of soils as measured by the Langmuir Isotherm . Soil Sci. Soc. Am. Proc. , 21 : 144 – 149 .
   Google Scholar
• Troug , E. 1930 . Determination of the readily available phosphorus of soils . J. Am. Soc. Agron. , 22 : 874 – 882 .
   Google Scholar
• Morgan , M.F. 1941 . Chemical soil diagnosis by the universal soil testing systems . Connecticut Agric. Exp. Stn. Bull. , : 450
   Google Scholar
• Bray , R.H. 1937 . New concepts in the chemistry of soil fertility . Soil Sci. Soc. Am. Proc. , 2 : 175 – 179 .
   Google Scholar
• Bray , R.H. and Kurtz , L.T. 1945 . Determination of total organic and available forms of Phosphorus in soils . Soil Sci. , 59 : 39 – 45 .
   Web of Science ®Google Scholar
• Thomas , G.W. and Peaslee , D.E. 1973 . “ Testing soils for phosphorus ” . In Soil Testing and Plant Analysis. , Revised Edition , Edited by: Walsh , L.M. and Beaton , J.D. 115 – 132 . Madison , WI : Soil Science Society of America, Inc. .
   Google Scholar
• Assefa , M. 1978 . Floral morphogenesis, temperature effects on growth and development, and variation in nutritional composition and distribution among cultivars in Eragrostis tef (Zucc.) Trotter , Madison , WI : University of Wisconsin‐Madison . Ph. D. Dissertation
   Google Scholar
• Murphy , J. and Riley , J.P. 1962 . A modified single solution method for the determination of phosphate in natural waters . Ana. Chim. Acta. , 27 : 31 – 36 .
   Web of Science ®Google Scholar
• Hue , N.V. and Evans , C.E. 1986 . Procedures used by the Auburn University Soil Testing Laboratory , Ser. 16 Ala. Agric. Exp. Stn. Dep. . (Revised)
   Google Scholar
• Karathanasis , A. and Hajek , B.F. 1982 . Revised method for rapid quantitative determination of minerals in soil clays . Soil Sci. Soc. Am. J. , 46 : 419 – 425 .
   Web of Science ®Google Scholar
• Mehlich , A. 1953 . Determination of P, Ca, Mg, K, Na, and NH4+ by North Carolina Soil Testing Laboratory , Raleigh , NC : University of North Carolina . Mimeo.
   Google Scholar
• Mehlich , A. 1984 . Mehlich III soil test Extractant: A modification of Mehlich II extractant . Commun. Soil Sci. Plant Anal. , 15 (12) : 1409 – 1416 .
   Web of Science ®Google Scholar
• Lancaster , J.D. 1970 . Determination of available phosphorus and potassium in soils , Mississippi Agric. Exp. Stn. . Mimeo.
   Google Scholar
• Olsen , S.R. , Cole , C.V. , Watanabe , F.S. and Dean , L.A. 1954 . Estimation of available phosphorus in soils by extraction with sodium bicarbonate , U.S. Dep. Agric. . Cir. 939
   Google Scholar
• SAS Institute . 1982 . “ Statistics ” . In SAS User's Guide , 15 – 37 . Cary , NC : SAS Institute Inc. .
   Google Scholar
• Sree Ramulu , U.S. , Pratt , P.F. and Page , A.L. 1967 . Phosphorus fixation by soils in relation to extractable iron oxides and mineralogical composition . Soil Sci. Soc. Am. J. , 31 : 193 – 196 .
   Web of Science ®Google Scholar
• Woodruf , J.R. and Kamprath , E.J. 1965 . Phosphorus adsorption maximum as measured by the Langmuir isotherm and its relationship to phosphorus availability . Soil Sci. Soc. Am. Proc. , 29 : 148 – 150 .
   Google Scholar
• Juo , A.S.R. and Fox , R.L. 1977 . Phosphate sorption of some bench‐mark soils of West Africa . Soil Sci. , 124 : 370 – 376 .
   Web of Science ®Google Scholar
• Peaslee , D.E. and Fox , R.L. 1978 . Phosphorus fertilizer requirements as estimated by phosphate sorption . Commun. Soil Sci. Plant Anal. , 9 (10) : 975 – 993 .
   Web of Science ®Google Scholar
• Present address: Department of Agricultural Sciences Milbank Hall, Tuskegee University Tuskegee, AL 36088
   Google Scholar