Effect of selenium fertilizer source and rate on grain yield and selenium and cadmium concentration of durum wheat

Abstract

Field studies were conducted for 3 yr at two locations in Manitoba, Canada, to evaluate the effect of various sources and rates of Se fertilizer on crop growth and the Se and Cd concentrations of durum wheat. Selenium concentration in durum wheat grown without Se application ranged from 195 to 532 µg kg-1 over the 6 site-years. Selenium seed coating, “Selcote” commercial granular fertilizer, and a foliar spray of sodium selenate solution applied at Feekes stage 5 all increased Se concentration in durum wheat grain at all locations, without negative effects on crop stand, biomass yield or grain yield. Regardless of treatment, Cd concentration in the grain was generally below proposed regulatory limits. Application of Se did not reduce Cd concentration in the grain, regardless of Se source. Selenium fertilization can be used to increase Se concentration of durum wheat, but is not an effective means of reducing the grain Cd concentration. Key words: Selcote, sodium selenate, seed-coating, selenium, cadmium

Selenium biofortification of high-yielding winter wheat (Triticum aestivum L.) by liquid or granular Se fertilisation

“…There were no gains or losses in yield or harvest index upon addition of selenate at application rates of up to 100 g Se ha −1 . These observations are consistent with other studies on field-grown wheat (Curtin et al 2008;Ducsay and Ložek 2006;Grant et al 2007). In controlledenvironment studies, growth stimulations induced by selenate fertilisation have been reported in ryegrass Fig.…”

Selenomethionine and Total Methionine Ratio is Conserved in Seed Proteins of Selenium‐Treated and Nontreated Soybean, Flax, and Potato

“…Compared with the control plants, Se translocation was in plants, have been previously reported (Tripathi and Misra, 1974;Lintschinger et al, 2000). The data presented here is in line with previous reports (Grant et al, 2007;Lyons et al, 2005) and confirms findings by Gupta and MacLeod (1999) in soybean. Seed treatment with vit is usually performed to protect crops against soilborne fungal pathogens (Gilbert and Tekauz, 1995), but some ingredients may affect seed germination in some crops.…”

Changes in sugar content and related enzyme activities in table grape (Vitis vinifera L.) in response to foliar selenium fertilizer

“…Spraying Se fertilizer is a new practice for high‐quality production in tree fruit cultivation, and an effective method of developing Se‐enriched fruit . Various studies have revealed that Se fertilizer can improve yield and quality in wheat and rice . Moreover, it can effectively increase Se content of crop edible parts and reduce accumulation of heavy metals .…”

“…7 Various studies have revealed that Se fertilizer can improve yield and quality in wheat and rice. 8,9 Moreover, it can effectively increase Se content of crop edible parts 10,11 and reduce accumulation of heavy metals. 12 Most of those studies, however, have selected inorganic Se as the main source of Se fertilizer, and more focused on the effects of application method, 9 application rate and number on crop quality and Se concentration.…”