Open AccessEfficiency of Sulfur-Coated Urea and Potassium Chloride Compounds Applied to Stargrass Growing on an Ultisol under Humid Tropical Conditions
Author(s) -
Fernando Abruña,
Jacinto Figarella,
Rubén Caro-Costas
Publication year - 1976
Publication title -
the journal of agriculture of the university of puerto rico/the journal of agriculture of the university of puerto rico
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.123
H-Index - 10
eISSN - 2308-1759
pISSN - 0041-994X
DOI - 10.46429/jaupr.v60i3.10523
Subject(s) - urea , physics , chemistry , humanities , mineralogy , organic chemistry , philosophy
The efficiency of various S-coated urea and KCl compounds applied to stargrass growing on an Ultisol under humid tropical conditions was determined. Applying N as urea in six applications yearly or in one application of S-coated urea compounds TV 1415 and 1255 resulted in higher recovery of fert ilizer N compared to urea in one application. Applying K as KCl in six applications yearly resulted in higher recovery of fertilizer K in the forage than when applied in one application. The various S-coated KCl compounds did not result in higher recovery of fertilizer K than did KCl in one application.