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Sulfur Content and Yield of Alfalfa in Relation to Plant Nitrogen and Sulfur Fertilization 1
Author(s) -
Sorensen R. C.,
Penas E. J.,
Alexander U. U.
Publication year - 1968
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1968.00021962006000010007x
Subject(s) - soil water , agronomy , nitrogen , sulfur , forage , yield (engineering) , human fertilization , chemistry , biology , environmental science , soil science , materials science , organic chemistry , metallurgy
Nitrogen and S percentages or yields or all of these were determined for alfalfa grown in two areas of Nebraska where soil and environmental conditions are markedly different. The much higher critical concentrations of S found in forage grown on sandy soils of northeast Nebraska than the commonly accepted value of 0.22% were attributed to effects of drouth. N and S contents were closely related in alfalfa grown with and without applied S both on drouthy sandy soils and on a highly fertile soil with natural subirrigation. The curve relating N and S percentages in alfalfa grown on soils where S was applied was essentially parallel to that for soils where S deficiency was not a problem. N concentrations increased with yield increase to applied S.