MISSOURI (Cont. ) 



Statewide; began May 1949, continuing; Joseph W. Kathrein, Leader; reports 

 available. 



Address inquiries to: Joseph W. Kathrein, Fish and Game Division, Con- 

 servation Commission, 903a Elm Street, Columbia, Mo. 



12. A Fish Tagging Program for the Large Impoundments of Missouri. 



This project is designed to obtain an estimate of the annual harvest of game 

 fish in relation to the available population. Fish are netted and tagged during 

 March-June and the tags are recovered by creel census clerks, dock operators, 

 and conservation agents. 



Statewide; began April 1951, indefinite; Joseph W. Kathrein, Leader. 



Address inquiries to: Joseph W. Kathrein, as in No. 11 above. 



13. A Study to Determine the Suitability of Pumpkinseed and Redear Sunfish as For- 

 age Species in Combination With Largemouth Bass. 



This project was set up to test a combination of largemouth bass with 

 pumpkinseed and redear sunfish in farm ponds. 



Boone County; began September 1949, indefinite; Ralph M. Burress, Leader. 



Address inquiries to: Ralph M. Burress, Fish and Game Division, Con- 

 servation Commission, 903a Elm Street, Columbia, Mo. 



14. Control and Eradication of Aquatic Vegetation With Several Weed Control Agents. 



This project is designed to test various herbicides on a number of plants to 

 determine their effectiveness over a period of time, concentrations necessary 

 for control, and their effectiveness when used with various carriers. 



St. Charles and Boone Counties; began June 1950, indefinite; Ralph M. 

 Burress, Leader. 



Address inquiries to: Ralph M. Burress, as in No. 13 above. 



15. Investigations of Stream Pollution. 



This is a project to investigate the effect of water pollution upon fish in 

 Missouri streams and to provide information for law enforcement and pollu- 

 tion abatement. Analyses of contaminated waters are made, the source of con- 

 tamination is traced, and its effect upon the fish determined. 



Statewide; began 1941, continuing; Herbert J. Fisher, Leader. 



Address inquiries to: Herbert J. Fisher, Fish and Game Division, Con- 

 servation Commission, 903a Elm Street, Columbia, Mo. 



16. A Study of the Effect Upon Fish of the Drawdown of Navigation Pools in the 

 Missouri Section of the Mississippi River. 



Conservation agents and commercial fishermen assist on this project by 

 making daily observations of river conditions relating to the fishery during 

 critical periods and by reporting their findings to the project supervisor. Each 

 report of fish mortality is investigated and detailed study of the situation and an 

 estimate of the extent of the fish kill is made. The U. S. Corps of Engineers 

 cooperate by making available daily records of tennperature, ice condition, snow 

 cover, and pool elevation at each lock and dam in the study area. 



U. S. Corps of Engineers cooperating; Mississippi River between Alton, 

 Illinois, and Keokuk, Iowa; began December 1946, continuing; Herbert J. Fisher, 

 Leader . 



Address inquiries to: Herbert J. Fisher, as in No. 15 above. 



17. The Use of Inorganic Fertilizers for Fish Production in Small Lakes and Ponds. 



The objective of this project is to measure the availability of several plant 

 nutrients when added to water, and to determine the most economical and 



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