Summary
Distribution of different nitrogen and sulphur fractions and N:S ratios in alfalfa (Medicago sativa L. Pers.) without and with S fertilization has been studied with a green house experiment. With increasing rates of applied S, the concentrations of total N, protein N, total S, protein S and total soluble S in the plant increased but those of non-protein N fractions (total soluble N, amino acid N, amide N, nitrate N) decreased. Thus the adequate supply of S in alfalfa increases the protein synthesis by accelerating protein metabolism. Sulphur application narrowed total N:total S ratios and widened protein N:protein S ratios. The data indicate that one part sulphur was required for every 11 to 12 parts of nitrogen to insure maximum production of protein. re]19750305
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Aulakh, M.S., Dev, G. & Arora, B.R. Effect of sulphur fertilization on the nitrogen-sulphur relationships in alfalfa (Medicago sativa L. Pers.). Plant Soil 45, 75–80 (1976). https://doi.org/10.1007/BF00011130
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DOI: https://doi.org/10.1007/BF00011130