Abstract:Vetch (Vicia sativa) is an important forage legume in alpine grassland. It is sown with oats (Avena sativa) to increase herbage yields and protein content. It has been frequently reported that the performance of vetch is inconsistent under differing environmental conditions. Genotype×environment interaction assessment is recommended for identification of genotypes with high performance over a wide range of environments. The genotype×environment interactions for vetch have not been reported previously. The o...