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Response of Tifway Bermudagrass to Sulfur on Sandy Soils 1
Author(s) -
Volk G. M.,
Horn G. C.
Publication year - 1972
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/agronj1972.00021962006400030031x
Subject(s) - cynodon dactylon , loam , subsoil , soil water , cynodon , chemistry , sulfur , agronomy , zoology , sulfate , nitrogen , environmental science , soil science , biology , organic chemistry
It was the purpose of this investigation to determine if previously reported differential growth and color response of Tifway bermudagrass ( Cynodon dactylon L. Pers.) on a loamy fine sand to various N and K sources in field plot tests correlated with S applied in these materials and S percentages in the grass. The growth response to (NH 4 ) 2 SO 4 over NH 4 NO 3 correlated positively with S percentage increase in the grass. Subblock treatments of K sources within the 2 N sources showed a growth response and S percentage increase in the grass in increasing order for K 2 SO 4 , KCl, SuL‐po‐mag, and K 2 CO 3 , which did not follow the S applied as a component of the K source. Retention of applied SO 4 ‐‐ by the mineral subsoil was negligible, but increase in total S in the surface soil probably was the result of build‐up of organic S during a 4‐ year period. There was no differential effect of NH 4 + vs. NO 3 on the uptake of S at the average N/S ratio of 12.5 and average S percentage of 0.35 in the grass. It is suggested that sulfate‐S application be coordinated with N application frequency on sandy soils.