weed control, chemical weed control, weeds, herbicide
Clean seed, good crop rotations and sound soil management practices are means of preventing weeds from infesting the land. Once they become established, however, special practices are needed to eliminate them. These practices include the use of special cultivation, competitive crops and chemicals. One application of any one of the practices seldom eliminates all perennial weeds now present and never eradicates a weed. Even though the top growth is eliminated, new weeds come from the seeds in the soil. Some of these seeds remain viable for as long as 20 years and many years of diligent work are required to eradicate them. The major portion of this circular is devoted to a discussion of special cultural and chemical practices needed to eliminate weed infestations. The recommendations are based on results of research work done in South Dakota and on recommendations made by the North Central Weed Control Conference.
South Dakota State State College of Agriculture and Mechanic Arts, Agricultural Experiment Station
Derscheid, L. A. and Wilson, L. R., "Perennial and Annual Weed Control in South Dakota" (1954). Agricultural Experiment Station Circulars. 99.