Effect of selenium foliar application on its content in winter wheat grain
Ducsay, L.(Slovenska Polnohospodarska Univ., Nitra (Slovak Republic))E-mail:ladislav.ducsay@uniag.sk | Lozek, O.
The effect of foliar application of graduated Se rates (0.5, 1.0, 10 and 20 g Se/ha) on the winter wheat grain yield and Se accumulation in grain was investigated in field experiments. In addition, the liquid fertilizer DAM-390 (30 kg N/ha) was applied in the growth stage of the 6th leaf. Se fertilization did not influence grain yields which depended much more on other factors as they fluctuated from 5.98 to 6.08, from 5.65 to 5.71, and from 7.78 to 8.04 t/ha in 1999, 2000 and 2001, respectively. Significantly lower grain yields in 2000 in comparison with the two other years were caused by unfavorable weather conditions. In all experimental years, both the rates of 10 and 20 g Se/ha significantly increased Se accumulation in grain (0.088 and 0.145 mg/kg dry matter, respectively) in comparison with untreated plants (0.045 mg/kg dry matter). In conclusion, a good Se concentration in winter wheat grains may be obtained if Se is applied in the rate of 10 g/ha or more.
显示更多 [+] 显示较少 [-]