Abstract
ABSTRACTLentil is a cool season food legume rich in protein and micronutrients. The objective of this study was to determine the effect of a low dosage of selenium (Se) on biological nitrogen (N) fixation, seed Se, and grain yield in lentils. The experiment was carried out at the Carrington Research and Extension Center, North Dakota, USA in 2012 and 2013. Six lentil genotypes were treated with three Se treatments. Application of selenate significantly increased percent Nderived from air (%Ndfa; 44%) compared to selenite (38%) and control (37%). In addition, selenate significantly increased lentil seed Se (1129 µg kg−1) compared to selenite (844 µg kg−1) and the control (542 µg kg−1). Both %Ndfa and grain yield increased with Se application. Selenate was the most effective form to increase %Ndfa. More research is required to determine the biochemical relationships between lentil yield and the Nfixation under Se deficient soils.
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