Nodulation Potential of Annual Sweet Lupins (Lupinus spp. L.) and its Effect on Soil Nitrogen and Phosphorus in Acidic Soils of Western Amhara, Ethiopia

In Ethiopia livestock feed shortage and soil acidity are serious problems. recent years sweet lupins (white blue species) were introduced as multipurpose crops in the country. However, there is no information about their nodulation potential. This study was conducted to evaluate potential of these effect on nitrogen (N) phosphorous (P) content soil. Seven lupin varieties evaluated using factorial arrangement (seven * two inoculations) a randomized complete block design locations for years. The result showed that inoculation location not significant (P > 0.05) biomass, seed, nodule number parameters. While variety < Its dry biomass seed yields also either Variety year had N P contents. first year, entries highest per plant, 222 nodules. second similar performance observed among species varieties. Soil affected by inoculation. addition yield advantage, compared white entries, high nodulation. Therefore, can be used acidic soils Ethiopia.