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Agronomy Journal Abstract -

Response of Tifway Bermudagrass to Sulfur on Sandy Soils1


This article in AJ

  1. Vol. 64 No. 3, p. 359-361
    Received: Oct 1, 1971

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  1. G. M. Volk and
  2. G. C. Horn2



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 (NH4)2SO4 over NH4NO3 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 K2SO4, KCl, SuL-po-mag, and K2CO3, which did not follow the S applied as a component of the K source. Retention of applied SO4-- 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 NH4 + vs. NO3 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.

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