The effect of Medicago arborea on erosion on a burnt area was studied
in experimental plots near Valencia, Spain, between 1989 and 1992. Its
growth and development was studied, and its effect was compared with
the natural vegetation (matorral) and bare soil. Medicago decreased so
il loss by 41.7% and runoff by 25.7% compared with bare soil. However,
under natural vegetation soil loss was 27.5% less than under Medicago
.