Effect of Nitrogen Fertilization of Dryland Wheat on Grain Selenium Concentration
1982
Soltanpour, P. N. | Olsen, S. R. | Goos, R. J.
This study was undertaken to (i) determine the effect of nitrogen (N) fertilization on selenium (Se) content of wheat grain (‘Scout 66’) grown under the dryland fallow system of eastern Colorado and (ii) determine the relationship between grain Se and ammonium bicarbonate-DTPA soil test levels of Se. Nitrogen fertilization did not affect grain Se where yield was increased significantly in only one out of 10 locations. The ammonium bicarbonate-DTPA-extractable level of soil Se was a good indicator of grain Se if 0- to 90-cm soil samples were used (r² = 0.82). Surface (0 to 30 cm) soil Se levels were weakly related to Se concentration of the grain (r² = 0.13).
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