2019 Indian Hills Pondweed
conversations with other lake associations, biologists, and conservation
departments, pondweed is expected to be a problem again this year. The large
majority of lakes in Missouri, Iowa and Kansas are experiencing an explosion in
Pondweed again this year. We have talked
to several conservation agencies and this is what they are saying is the cause:
- Significant emergence of pondweed last year has
allowed the root system to re-sprout this year regardless of treatments.
treatments are effective for a season much like the herbicides you have to use
yearly to treat for crabgrass in your yard.
- Higher temperatures caused warm water conditions,
fuel Pondweed growth again this year in multiple states.
- Other factors include, number of sunny days,
shallow water depths and migratory waterfowl.
pondweed- Variable leaf pondweed, Split leaf pondweed
- Variable leaf pondweed produces very small
leaves only after reaching the top of the water surface.
Current Pondweed Strategy:
We have a
multi-prong approach for dealing with the Pondweed and continue to survey
growth rates and strategy effectiveness:
- Grass Carp: Last year we stocked
the lake with approximately 400 Grass Carp. Grass Carp will eat three time
their own weight each day. This is the first part of our approach and will
help stabilize/reduce the current growth and provide a long-term control.
- Chemical Treatments: There are herbicides we can
use to address the issue quicker than Grass Carp and we have been testing a
site-targeted herbicide that ensures the safety to our lake, members (including
kids), fish/dogs and our significant investment in grass carp.
of herbicide treatments –
The results have been extremely positive and we are seeing a 90 to 95% kill
rate in targeted areas, but to use this method widescale we will need
additional funding that our current budget does not have.
We will continue to keep our members up to date on our
progress to address the problem we are experiencing. Should you have any
questions please send them to the ILPOA Office at firstname.lastname@example.org.
Lake, Dam & Spillway