Bradyrhizobium inoculation and nitrogen fertilizer effects on seed yield and protein of white lupin
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Variation in seed yield and protein levels of sweet white lupin (Lupinus albus L. cv. Ultra) in the North Central USA has limited production of the crop in this region. Poor N nutrition from biological or exogenous sources may be one of the causes of this variation. Studies were conducted under irrigation in 1988, 1989, and 1990 at Becker, MN, on a Hubbard loamy sand (sandy mixed udorthentic haploborolls) to examine the impact of Bradyrhizobium inoculation and N fertilizer on lupin seed yield, protein concentration, and yield components (...)