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MECHANICAL CONTROL <br />USE OF CHEMICALS IN COMBINATION WITH NETS <br />TOMPKINS AND BRIDGES (1963) <br />SMALL MASSACHUSETTS LAKE <br />6 FYKE NETS <br />FISHED 17 DAYS <br />10 DAYS CATCH OF 148 LBS DROPPED 11 LBS <br />LAKE TREATED WITH ALGACIDE (COPPER <br />SULFATE) <br />8 MORE DAYS OF NETTING <br />CATCH INCREASED TO 173 LBS <br />AND DROPPED TO 15 LBS <br />BROWN (1964) <br />20 OHIO LAKES <br />32 NETTINGS <br />0.5-3.0 PPM COPPER SULFATE <br />CATCHES DOUBLED WHEN CHEMICAL <br />WAS USED <br />n