and reduced soil quality. Field experiments were conducted to determine weed suppression
attained with yellow sweetclover grown as a green manure fallow replacement crop. Yellow
sweetclover was undersown in field pea, flax, or Indian mustard and then killed in June of
the following fallow year. Living yellow sweetclover competed strongly with weeds during
the first fall and spring of fallow. Weed biomass accounted for< 1 to 12% of the total plant …