Effect of Rhizobium Inoculation on Growth of Common Bean in Low-Fertility Tropical Soil Amended with Phosphorus and Lime

The cultivation of grain legumes (e.g., common bean) in sub-Saharan Africa contributes to the provision food for a growing population and delivers environmental benefits such as inputs nitrogen (N) crops soil via symbiotic fixation (SNF). However, success SNF is constrained by several factors poor efficiency native rhizobial strains fix N, low availability phosphorus (P) acidity soils. Two trials have been conducted low-fertility tropical soils at smallholder farm scale Madagascar assess effects Rhizobium inoculation together with P lime on growth bean. We showed that had significant bean root nodulation, which was increased up 15-fold plant growth, 78% yield, 126%. Moreover, we observed positive relationships between fertilization yield. addition dolomite did not show any effect our study. decreased mycorrhization rate roots. Additional research still needed improve understanding fertility conditions (mainly nutrient availability, including micronutrients) allowing better legume symbionts (rhizobium mycorrhiza)