Vol. 15—1961 - NorthEastern Weed Science Society

537.
1. Aqualin hcrbicicb was found to be effective in
tho control of ~otQmogcton sp.,. and other resistant forms,
howcve r-j- ti1.e material was difficult to hancLe .
2. Endothal liquid and granular formul.tinns were
successful in controlling pone weeds ane other forms. They
were not effective in tao control of certain floating and
emergent species.
3. ~-1845 and M-1847 were both effective against a
wide range of spccias. Both materials should ba examined further.
4. Silvux 4L, iso-oetyl ester, responded similarly to
pr-opy Lon c glycol fcrnulations in producing excellent control
of Hyrio.2hyllum.sp.
5. Esteron 99 failed to control pone weeds, but appears
to be effective against certain su~mcrged and floating forns.
6. Sima zinc was effective in the control of Polvgonum sp.
7. Combinations of chemical appear to be logicnl approach
in arcas where varied susceptibility occurs.
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