caractérisation de la fertilité du sol en fonction des mauvaises herbes présentes

Soil Fertility Characterization Based on Present Weed Specie. In order to determine the soil fertility level using weed indicators, a study was conducted in 4 villages in northern Cameroon. It was based on farmers' interviews and fi eld surveys. It appears that the soil fertility status can be determined by using two groups of weeds: "guide" weeds, orienting the diagnosis according to their relative importance; "indicator" weeds, used to discriminate the two soil types (fertile/ degraded). Presence or absence of the identifi ed species allows farmers to determine whether the plot is fertile or degraded. He can then decide to use the fi eld or not.