. Farm friends and farm foes : a text-book of agricultural science . Agricultural pests; Beneficial insects; Insect pests. 22 FARM FRIENDS AND FARM FOES flower heads appear. A single plant may produce three thousand seeds which are likely to be carried but a short distance. Consequently a dense colony will soon be pres- ent, crowding out all other vegetation. Pulling the plants, frequent mowing, or tillage in a hoed crop seem to be the only remedial methods. The sowing of pure grass and clover seed is the most important preventive measure. The Ribwort, Rib-grass, or Narrow-leaved Plantain is o
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. Farm friends and farm foes : a text-book of agricultural science . Agricultural pests; Beneficial insects; Insect pests. 22 FARM FRIENDS AND FARM FOES flower heads appear. A single plant may produce three thousand seeds which are likely to be carried but a short distance. Consequently a dense colony will soon be pres- ent, crowding out all other vegetation. Pulling the plants, frequent mowing, or tillage in a hoed crop seem to be the only remedial methods. The sowing of pure grass and clover seed is the most important preventive measure. The Ribwort, Rib-grass, or Narrow-leaved Plantain is one of the most trying pests that infest light soils. It is com- monly introduced in clover and grass seed and soon de- velops a thickened rootstock that renders it very difficult to eradicate. On account of this rootstock it is a peren- nial, so that the mere prevention of seeding will not lead to extermination; the roots must be pulled up, cut off deeply, or plowed under. On barren sandy lands in meadows and pastures as well as in cultivated fields, the Sheep Sorrel or Field Sorrel is Hkely to take complete possession of the soil. This well-known weed is an indication of poor farming, and the best way to eradicate it is to enrich and till the infested areas. Its seed is very commonly distributed in barnyard fer- tilizers, as well as in other ways, and the plant is likely to appear in any neglected spot where the soil is acid. It is so easily eradicated by good methods of farming that it need never become. Sheep Sorrel. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Weed, Clarence Moores, 1864-1947. Boston ; New York : D. C. Heath & Co.