Productivity of groundnut has been generally low in Nigeria owing to soil fertility problems arising from low soil pH and low organic matter content of the soils leading to deficiency of major nutrients, especially, N and P. Current fertilizer recommendations are based on single nutrient trials and do not take into consideration the use of lime, manure or micronutrients.

Nitrogen is one of the most abundant elements in the atmosphere, and BNF is the main source of N for Legumes plants. Faba bean is one of the most important Legumes plants in Ethiopia and widely grown in Amhara regional state.In view of the presence of  heterogeneous agroecologies found in the country, more diversity and effective strains nodulating faba bean are expected. This study was initiated with the objectives of isolation, characterization, and selection of symbiotically efficient faba bean rhizobia from some part of Wello, Ethiopia.

Inoculation with highly effective and persistent rhizobium strains is a possible approach for enhancing the productivity of groundnut in Ghana. Therefore, a 2 × 9 factorial experiment which resulted in 18 treatments in total was set up in three farmers’ fields across northern Ghana to evaluate the response of two groundnut varieties to indigenous rhizobium isolates and their persistence after a year of introduction. The persistence study was carried out under greenhouse conditions.