D.N.R. Says Weather Has Slowed Aquatic Plant Growth
Tuesday May 20, 2014 9:24am
By: Jim Measel
(UNDATED) - The Indiana D.N.R. says the growth of aquatic plants in northeast Indiana lakes has been slowed because of the late winter thaw and cool spring weather. D.N.R. officials say this should delay and may even reduce the need to use chemical herbicides to control lake vegetation.
Residents at area lakes hire commercial pesticide applicators to spray aquatic weeds where they interfere with boating and swimming after a permit is obtained from the D.N.R..
The timing of the applications depends on water temperature and various growing stages of the plants. The D.N.R. says there are also some misconceptions about plant ecology.
Fisheries Biologist Jed Pearson says just because plants are more abundant one year and cover wider areas doesn’t mean a lake is getting polluted.
On a region-wide basis, plant coverage was greatest in 2012, a year marked by an early spring and record warm temperatures with less rainfall.