Improvement of Vicia-micronucleus test for assessment of soil quality: A proposal for international standardization

► We adapt the Vicia-micronucleus assay to soil quality assessment. ► We aim at obtaining ISO standardization for this test. ► We compare two different exposure durations and seed provenances. ► We conclude to an equivalent sensitivity of both exposure protocols. ► Organically-cultured seeds did not offer any advantages over conventional seeds.