Selenium concentration of fescue and bahiagrasses after applying a selenium fertilizer

Determining the fate of selenium in wheat biofortification: an isotopically labelled field trial study

“…K 2 SeO 4 , BaSeO 4 ), including commercial compound Se fertilisers (e.g. Selcote Ultra ® , Top Stock ® ) has also been studied (Gissel-Nielsen 1998;Gupta and Gupta 2002;Valle et al 2002;Broadley et al 2010). Application of Se may be carried out either by incorporating Se-enriched granular fertilizers or by spraying a liquid drench directly onto the crop canopy or soil (Broadley et al 2010).…”

“…Chilimba et al (2012a) observed that Se uptake by maize was similar for liquid and solid applications of selenate to soil. Despite the wide range of application rates employed in cereal crop Se biofortification studies, from <10 to 500 g ha et al 2010, Chilimba et al 2012aGalinha et al 2012;Wang et al 2013); this is also true of herbage sward studies (Whelan 1989;Rimmer et al 1990;Shand et al 1992;Valle et al 2002). It is also widely accepted that crop uptake of selenate (Se VI ) exceeds that of selenite (Se IV ) (Shand et al 1992;Chen et al 2002;Zhao et al 2005;Galinha et al 2012, Ros et al 2016) mainly because selenate is more soluble in soil within the pH range of arable soils (Fleming 1980;Jacobs 1989;Neal 1995) making it more bioavailable (Zayed et al 1998;Li et al 2008;Stroud et al 2010b).…”

The effect of fertilizing forage with sodium selenate on selenium concentration of hay, drain water and serum selenium concentrations in beef heifers and calves

“…Other researchers (Gupta and McLeod 1994;Whelan et al 1994;Valle et al 2002) have documented that selenium content in forages was at adequate levels of 0.1 mg Se kg (1 for more than 22 wk. But in this study, the selenium concentration of the fertilized hay decreased by 54% from the first crop to the second crop, which may have been due to leaching of selenium into the drain tiles.…”

“…(1 increases the selenium content of forages (Stephen et al 1989;Hathaway et al 2001;Valle et al 2002). Other researchers (Gupta and McLeod 1994;Whelan et al 1994;Valle et al 2002) have documented that selenium content in forages was at adequate levels of 0.1 mg Se kg (1 for more than 22 wk.…”

Mineral Supplementation

“…Studies by Whelan and Barrow (1994) have shown that in a Mediterranean environment a single application of the slow-release fertilizer, barium selenate, at 109 Se/ha maintained adequate blood Se concentrations in sheep for four years, whereas a single application of sodium selenate fertilizer at the same rate was effective for 15 months. Valle et al (2002) applied the barium selenate (0 to 120 g/ha) based product to fescue (Festuca spp. ) and bahiagrass (Paspalum notatum) pastures in Florida, USA and found the fescue to maintain Se concentrations better than bahiagrass.…”