Show wild onion destroyed by careful plowing on cu cultivated I 1 land and wild onion can seldom be destroyed in one season the first step Is to plow in the fall as late as practicable the depth of the furrow fui row being gauged to bring the roots or bulbs to the surface where they will be killed by freezing As some of the roots will live through the H winter inter the land should be plowed again in the spring at a depth which will throw the roots to the surface where many more of them will be killed by spring frost following this treatment a clean cultivated crop followed in turn by wheat and clover or any other thickly sown crop will usually completely rid the land of the pest liming and fertilizing Is also effective as it helps the crop to crowd out the weed |