The objective of this work is to determine the appropriateness of the effect of agroecology in bean plantations to increase bean grain yield and increase the protein content in the grain. Eleven varieties (local and imported) were tested on the agro-ecology of the Republic of Congo, the random block system with three (3) replicates, each block was made up of 11 experimental plots. The results of the agro-ecological trials on beans were carried out by comparing the average rates of the plants. Protein content in grains, protein collection and bean yield at mineral rates were compared to unfertilized plants. The field study with eleven varieties of beans shows that to replace the Nkayi variety, which is a local variety, the VSB variety 1132128 from Germany and the red variety from Cameroon can be introduced into the Republic of Congo.
