NEW MATERIALS AND METHODS FOR WATER RESOURCE MANAGEMENT A REPORT TO THE COMMITTEE ON PUBLIC WORKS, UNITED STATES SENATE, MAY 1962 PREPARED BY SOIL AND WATER CONSERVATION RESEARCH DIVISION AND CROPS RESEARCH DIVISION AGRICULTURAL RESEARCH SERVICE U.S. DEPARTMENT OF AGRICULTURE Washington, D.C. 86694 0-62 Issued June 1962 IX ACKNOWLEDGMENTS The mention of patented materials or equipment in this report does not imply approval of the product to the exclusion of others that may also be suitable. Acknowledgment is made of the assistance of staff members of the two divisions who assisted in compiling and summarizing the data. Special acknowledgment is given to Dean C. Muckel, agricultural engineer, who coordinated the report. X From conveyance channels and reservoirs. Losses from phreatophytes and aquatic weeds. Interfere with recreational activities. Estimated losses caused by aquatic weeds. Effect of water loss reduction Estimating savings in water supplies. Using ground covers and sealants for water harvest. Review of new materials and methods to conserve water resources. XI 2,4-D, Silvex, or 2,4,5-T for bank weeds and phreatophytes_ Weed control and its effect on flow and water management. Economics of various methods of control.. Chemical control may change cropland management. Irrigation water application___ Polyethylene film and plastics as mulches-humid areas. Plastic covers as mulches-dryland areas. 43 |