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Communications in Soil Science and Plant Analysis Volume 37, 2006 - Issue 5-6
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Original Articles

Selenium Fertilization of Star Grass Pastures in Central Puerto RicoFootnote∗

Rafael Ramos Santana Agronomy and Soils Department, Agricultural Experiment Station of Corozal, Puerto Rico, USA
,
Lee R. McDowell Animal Sciences Department, University of Florida, Gainesville, FL, USACorrespondence[email protected]
,
Raúl Macchiavelli College of Agricultural Sciences, Agronomy and Soils Department, Mayagüez, Puerto Rico, USA
,
Antonio Vázquez Agronomy and Soils Department, Agricultural Experiment Station of Corozal, Puerto Rico, USA
&
Nancy S. Wilkinson Animal Sciences Department, University of Florida, Gainesville, FL, USA
Pages 673-678 | Received 10 Jan 2005, Accepted 09 Feb 2005, Published online: 05 Feb 2007
 
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Abstract

The experiment tested the efficacy of four selenium (Se) fertilization treatments and a control in the Se content of Star grass. Significant differences were observed among treatments and dates of evaluation but no interactions were observed. The highest soil Se application of 5.16 kg/ha of Selcote Ultra was significantly (P<0.01) superior in concentration to that of control and of the application of 0.861 and 1.72 kg/ha of the same product. Dates of harvest after Se application were significantly (P<0.05) higher from 2 to 6 weeks in relation to all tested dates after week 10. Although all treatments presented forage Se concentrations that meet the minimum requirements for grazing ruminants, it seems that forage Se content was elevated up to week 18.

∗Florida Agricultural Experiment Station Journal Series No. R‐10450.

Notes

∗Florida Agricultural Experiment Station Journal Series No. R‐10450.

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