International Journal of Soil Science1816-4978xxxx-xxxxAcademic Journals Inc.10.3923/ijss.2007.29.39RahmanM. HasinurSaigaS. 1200721The objectives of this study were to compare K, Ca and Mg utilization and grass tetany potential among the high and low magnesium containing strains and commercial cultivars of orchardgrass in response to application of dairy manure and chemical fertilizer. The study was conducted from 2002 through 2003 in northern Honshu Island, Japan on sandy loam Andisol. Highest plant dry matter production was recorded with the application of chemical fertilizer. Soil properties varied with application of manure. Potassium concentration in shoot tissue increased from 2002 to 2003 in all the treatments irrespective of strains and cultivars. However, calcium concentration in shoot tissue decreased from 2002 to 2003 in all the treatments irrespective of strains and cultivars. High magnesium containing strains almost showed low potassium and high magnesium and calcium concentrations in all the treatments. Concentrations of K, Ca and Mg in shoot tissue were highest as a result of dairy manure application and lowest by chemical fertilizer application. The grass tetany potentials were higher in 2003 than 2002. The grass tetany potential was lowest in all the cultivars and strains during fertilization with chemical fertilizer. High magnesium containing strains were less grass tetany prone than the others irrespective of treatments. The correlations between equivalent ratio and K were significantly positive; the correlations involving equivalent ratio, Ca and Mg were negative, however, regardless of treatments and years.]]>Asay, K.H. and F.H. Mayland,19903407411Asay, K.H., F.H. Mayland and D.H. Clark,199636895900Ball, D.F.,1964158492Blake, G.R. and K.H. Hartge,19861986pp: 363-375pp: 363-375Barber, S.A.,1984Binnie, R.C., D.T., Johnstone and D.M.B. Chestnutt,199651456463Buckner, R.C., P.B. Brruss II, P.L. Cornelius and L.P. Bush,1981Lolium festuca hybrid derivatives.]]>21419423Butler, E. J.,196360329340Clark, R.B.,198372175196Cooper, J.P.,19731973Crush, J.R.,198326337340Duncan, D.B.,195511142Danielson, R.E. and P.L. Sutherland,19861986pp: 443-461pp: 443-461Easton, H.S., A.D. Mackay and J. Lee,1997Lolium perenne L.).]]>48657666Eghball, B.,200294128135Gardner, W. H.,19861986pp: 493-541pp: 493-541Grunes, D.L.,19731973pp: 113-140pp: 113-140Grunes, D.L., P.R. Stout and P.R. Brownwell,197022331374Guidi, G.V. and G. Petruzzelli,19891989Harris, D.J., R.G. Lambell and C.J. Oliver,198360230234Hide, D.H. and T.A. Thomas,198132990991Hovin, A.W., T.L. Tew and R.E. Stucker,197818423427Hutton, J.T. and K. Norrish,197761217Ito, Y. and K. Miyawaza,198417242247Jackson, M.L.,19731st Edn.,Pages: 498Pages: 498Kemp, A. and M.L. t'Hart,19575417Kagata, H., N. Inoue, M. Hagiwara, M. Ohonishi and J. Nakano,1999454251Magdoff, F.R. and J.F. Amadon,198072161164Mayland, H. F. and K.H. Asay,198942109113Mayland, H.F. and D.A. Sleper,19931993pp: 10951096Mays, D.A. and P.M. Giordano,1989303739Moseley, G. and D.W. Griffiths,198439195199Moseley, G. and D.H. Baker,199146375380Norrish, K. and J.T. Hutton,19776611Nguyen, H.T. and D.A. Sleper,1981Festuca arundinacea Schreb.]]>595763Pagliai, M., G. Guidi, M. LaMarca, M. Giachetti and G. Luccamante,198110556561Robinson, D. L.., L. C. Kapel and J.A. Boling,19896734703484Riter, R.J., Boling, J.A. and N. Gay,198459197203Rumball, W., G.W. Butler and R.H. Jackman,1972Bromus unioloides H.B.K.).]]>153342Sanderson, K.C.,198015173178Saiga, S.Y. Nishimura and K. Izumi,1997Dactylis glomerata L.).]]>43111116Saiga, S., H. Saitoh, S. Sabreen and M. Tsuiki,200248209215Saric, M. R.,198372137150Scanlon, D.H., C. Duggan and S.D. Bean,19731448Schrader, T.,196712531537Sleper, D.A., K.P. Vogel, K.H. Assy and H.F. Mayland,19896734563462Smith, K.F., G.J. Rebetzke, H.A. Eagles, M.W. Anderson and H.S. Easton,1999Lolium perenne L.), with special emphasis on minerals related to grass tetany.]]>507986Stratton, S.D. and D.A. Sleeper,197919477481Hart, M.L.,19601960pp: 8895Underwood, E.J. and N.F. Suttle,19993rd Edn.,Pages: 624Pages: 624Vogel, K.P., H.F. Mayland, P.E. Reece and J.F.S. Lamb,19892911461150