Been trying to get this under control as we have taken over the pond maintenence in our neighborhood of a 1/2 acre spring fed pond. I thought this was chara but getting little to no effect from cutrine plus. It does seem to brown when there is muddy water but soon recovers when it clears. It appeared a couple weeks after all the FA was gone. We are running a dual head aerator and two fountains and this grows anywhere there is shallow water and is anchored well in the silt/muck. I can't smell anything when I crush it. I thought it was Chara but think it may be a pond weed. Any help is much appreciated. Thanks!
Some others here may have opinions on Sago pondweed control but I've found a cutter rake to be sufficient in most cases. It does take some work but this type of pond weed is not the devil of all pond weeds. I work on a guys 2 acre pond that we manage this with rakes every summer and have even tried an 1/8" braided cable with fairly good success. We did apply chemical several years ago but I'll have to look back and see what it was we used-it worked a bit TOO well, but didn't disturb any other aquatic life (at least fish).
I'd appreciate the help, I want to control it but not crash the whole pond food chain. We run plenty of aeration but I'd love to have some grasses/plants that help out. Even if we knocked it back now and again would be fine too. It has covered quite a bit of the pond.
Just trying to limit the ammount of weeds as well as keep more nutrients from yearly growth out as much as possible.
Curious about Sonar or Fluridone. I fish a larger pond that was overtaken with coontail and was nearly eliminated with sonar. Pricey but our pond is quite small.
Diquat might be a good choice if Chemical is the way you want to go. Fluridone appears to be a bit more touchy with the amount as far as killing plants or plants and fish. Any chemical you use is going to cause a DO drop when plant material is decaying so you'd want to do small areas at a time in my opinion. Another alternative is Triploid grass carp?? Have you considered those?
Yes the former contracted service suggested carp and stocked a few 3 years ago. I've only seen one very large one in the pond since. Not sure if others got taken out by snapper or heron. I've seen a heron stab and then leave a 16" LMB. It was on the bank still alive and I assumed a kid had caught it and been dumb but it had a large piercing wound and I had just seen a heron there 10 mins before..
I'm not a chemical first type but I also don't want to be out there cutting and raking all summer. It seems to grow very fast.
As far as DO, again we have a lot of aeration and wind (always windy here in Nebraska) but I do worry more about winter and ice. We won't leave aeration on all winter as it will attract every goose in town. I was planning on leaving one diffuser and tubing in the water and could plug in the aerator if needed if we have thick ice/snow to open it up occasionally but not long enough for the geese to notice. A fish kill would be heartbreaking as we have caught up to 9.5" hybrid gills and plenty of 16" bass. I did a creel survey last year and 90% of the bass I caught all season were 15-16".
I would get a start on the chemical apps now, have the pondweed somewhat minimized by fall so the DO is stable as possible going into late fall/winter so the large die-off of aquatic veg isn't robbing vast surpluses of O2. I would also be cautious of treating with chemical with high water temps mid-summer-it can be a big DO killer in the heat as well but your aeration will help minimize that to some extent. On a side note, is Hyb BG your main panfish?? Do you get many bass above that 15-16" mark or is that where the bass seem to top out?
Yes, once we get into the dog days I'll cease any chemical treatments due to DO drops but continue bacteria treatments I'm trying. They (or the aeration) have helped with clearing multiple patches where I've never seen the pond bottom before due to algae. Uncovering a lot more gravel than I thought we had and seems to be making the bedding bass happy.
Biggest bass has been 17" and the biggest BG has been 9.5" but lots of 8". I did the survey with a bump board along with input from state Game and Parks fisheries bilogist to determine the possible need for a cull. The majority of this pond is shallower than 4' with (3-4) 7' areas dug by a excavator 10 years ago. I measured with a Deeper Sonar last year and made a complete map. I don't think we can get our bass much above that mark but the potential for 10" BG (a master angler award size) is very much within reach.
I also think the reason for the bulk of the LMB being the same size is due to a fish kill we had before I moved here. There was thick ice and snow cover for a long time. The first year I was here there was only 9" bass and that was 2 years after that fishkill. Now that I'm here I remove snow from 1/3 or more when it gets above 6" as long as there is safe ice. I also ice fish it and I think it may help vent some gasses. I drill quite a few holes spread across the pond for this purpose.
We do not connect to any upstream waterways (down is our overflow spillway) and don't have crayfish. I had actually thought of introducing them but don't want too much tunneling. Young of the year BG and LMB along with frogs/tadpoles are the main forage. I'd love to see our water quality sustain multiple BG spawns per season to fatten our fish.
Treated about half the shoreline with Diquat on 5/23. Despite getting 1.5" of rain several hours later it is all totally dead on 5/25. I also tested on a small patch of cattails and it really did well there too. I added a round of bacteria treatment to help offset the nutrients now in the pond with all the dead Sago. We usually get small blooms during rainstorms due to all the lawn fertilizer from the surrounding lots.
I plan on leaving a patch of Sago alone in a large shallow area I can't reach with my sprayer. This will keep a nice area for the BG and LMB fry to hang out and feed in. I fear that treating with Sonar would turn it into a mud hole with little to no living plant life.