References
- Bansal , K.K. , Motiramani , D.P. and Pal , A.R. 1983 . Studies on sulphur in vertisols. 1. Soil and plant tests for diagnosing sulphur deficiency in soybean (Glycine max (L.) Merc.) . Plant Soil , 70 : 133 – 140 .
- Barrow , N.J. 1967 . Studies on extraction and on availability to plants of adsorbed plus soluble sulfate . Soil Sci. , 104 : 202 – 249 .
- Burmester , C.H. , Adams , F. and Haaland , R.L. 1981 . Effects of nitrogen and sulfur fertilizers on sulfur content of tall fescue and phalaris . Agron. J , 73 : 614 – 618 .
- Fox , R.L. , Kang , B.T. and Nangju , D. 1977 . Sulfur requirements of cowpea and implications for production in the tropics . Agron. J. , 69 : 201 – 205 .
- Gilbert , M.A. and Robson , A.D. 1984 . Sulfur nutrition of temperate pasture species. I. Effects of nitrogen supply on the external and internal sulfur requirements of subterranean clover and ryegrass . Aust. J. Agric. Res. , 35 : 379 – 388 .
- Heu , N.V. , Adams , F. and Evans , C.E. 1984 . Plant-available sulfur as measured by soil-solution sulfate and phosphate-extractable sulfate in a ultisol . Agron. J. , 76 : 726 – 730 .
- Islam , M.M. and Ponnamperuma , F.N. 1982 . Soil and plant test for available sulfur in wetland rice soils . Plant Soil , 68 : 97 – 113 .
- Jones , M.B. , Ruckman , J.E. , Williams , W.A. and Koenigs , R.L. 1980 . Sulfur diagnostic criteria as affected by age and defoliation of subclover . Agron. J. , 72 : 1043 – 1046 .
- Kang , B.T. and Osiname , O.A. 1976 . Sulfur response of maize in western Nigeria . Agron. J. , 68 : 333 – 336 .
- Nuttall , W.F. 1985 . Effect of N, P and S fertilizers on alfalfa grown on three soil types in northeastern Saskatchewan. I. Yield and soil tests . Agron. J. , 72 : 41 – 46 .
- Rasmussen , P.E. , Ramig , R.E. , Ekin , L.G. and Rhode , C.R. 1977 . Tissue analysis for diagnosing sulfur deficiency in white wheat . Plant Soil , 46 : 153 – 163 .
- Rasmussen , P.E. and Allmaras , R.R. 1986 . Sulfur fertilization effects on winter wheat yield and extractable sulfur in semiarid soils . Agron. J. , 78 : 421 – 425 .
- Smith , F.W. and Dolby , G.R. 1979 . Derivation of diagnostic indices for assessing the sulfur status of Panicum maximum var. Trichoglume . Commum. Soil Sci. Plant Anal. , 8 : 221 – 240 .
- Spencer , K. and Freney , J.R. 1980 . Assessing the sulfur status of field-grown wheat by plant analysis . Agron. J. , 72 : 469 – 472 .
- Spencer , K. , Freney , J.R. and Jones , M.B. 1984 . A preliminary testing of plant analysis procedures for the assessment of the sulfur status of oilseed rape . Aust. J. Agric. Res. , 35 : 163 – 175 .
- Tsuji , T. 1980 . Some factors affecting sulphur content of native grassland soils. Part I. Distribution of soil and plant sulphur in grassland and responses of pasture plants to sulphur fertilizer . J. Sci. Soil Manure, Jpn. , 51 : 210 – 220 . (in Japanese)