Isolation, characterization and selection of indigenous Bradyrhizobium strains with outstanding symbiotic performance to increase soybean yields in Mozambique.

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Co-inoculation of soybean with Bradyrhizobium and Azospirillum promotes early nodulation.

Soybean inoculation with elite strains of Bradyrhizobium to improve nodulation, N2 fixation, and grain yield is well established worldwide. However, when grown in soils where N is deficient, soybean undergoes an initial phase of N starvation that may last up to 20 days after seedling germination due to the lack of synchronism between the phase when seed N reserves are exhausted and the moment when plants begin to benefit from the nitrogen fixed by the bacteria. Practices that promote early nodulation may play a key role in reducing the N starvation period. Azospirillum is a plant growth promoting rhizobacteria (PGPR) that can stimulate root hair formation and root growth, creating more sites for early root infection and nodule formation by N2-fixing Bradyrhizobium spp. In this study, the effects of co-inoculating soybeans with Bradyrhizobium spp. and Azospirillum brasilense on nodulation precocity and N2 fixation were evaluated under greenhouse and field conditions. Nodule number and dry weight, as well as plant and root dry weight and N accumulated in shoots at 15, 18, 21, 24 and 30 days after emergence (DAE) were evaluated in response to inoculation with Bradyrhizobium spp. alone or when co-inoculated with Azospirillum sp. In the greenhouse, co-inoculated plants nodulated precociously as indicated by a significant increase (p< 0.05) in nodule biomass observed at (include) 21 DAE. More pronounced effects of co-inoculation were observed in the field as early as 18 DAE, suggesting that the presence of Azospirillum helps plants to overcome environmental stresses

Feasibility of transference of inoculation-related technologies: a case study of evaluation of soybean rhizobial strains under the agro-climatic conditions of Brazil and Mozambique.

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Draft genome sequence of agrobacterium deltaense strain CNPSo 3391, isolated from a soybean nodule in Mozambique.

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Evaluating the effects of UPoCA prior to implementation: taking stock of where we were

Most development researchers and practitioners agree that the sharp rise in international prices for agricultural commodities that emerged in 2003 and peaked in 2008 resulted in a global food crisis. To combat the crisis, IITA and national partners in seven African countries are evaluating the effects of cassava research for development approach on increasing the productivity of production and processing of cassava for home consumption and marketing surplus produce. This paper uses farm household and econometric modeling with baseline and counterfactual data to predict the impact of implementing the project prior to its full implementation. The results show that cassava is at different stages of transformation from a famine reserve, food security crop and rural food staple to a cash crop for urban consumption and manufacture of industrial products. The impact of UPOCA will likely depend on the stage of transformation of the cassava sector in the country. UPoCA will likely have the most impact if interventions are aligned with the stage reached by the country