Thanks 007, I only used one ounce per acre and treated it just once in the fall. Guess I need to bite the bullet and buy the stuff and do it better.

Agree with 007 that halosulfuron is great on sedge. I inherited a yard that was covered in it and one application has pretty much knocked it out. It is all we used for sedge in turf when i did commercial landscaping. Sedge/kyllinga was never much of a problem with halo.

Never used it on peas, would just have to read the label.

007,

I'm dealing with purple and yellow nutsedge too. Where do you rank Katana and Dismiss South on your list of herbicides? What about MSMA?

Second question: Certainty and Outrider are both 75% sulfosulfuron. One specifically says not to use on sod and the other is recommended for zoysia. EPA Reg. numbers are slightly different. Any idea on why one is for sod and the other is not?

Katana is pretty hot on it also, but I always felt I burned the tops off too quickly, allowing some regrowth to occur. It is definitely a two-app product. MSMA always killed it, but I had to get the rate up pretty high to kill it with one app in turf, which hurt the grass. In a noncrop setting it would be a good choice. Honestly I don't know where the cost falls it has been so long since I messed with it.

Outrider and Certainty are same, difference is money, or used to be. Certainty, being a turf product, commanded a premium price.

Thank you Sir!

https://www.keystonepestsolutions.com/index.php?main_page=product_info&products_id=362

Anyone know of a cheaper source for Permit than $393 for 20 oz?

Would turning a field and letting it lay over winter, like the farmers from days gone by, help with rotting seeds and unwanted plants?

Some, but seed can remain viable a long time, depending on species. It would need to be deep, like subsoiling.

I remember in the 70's somebody was doing a test on buried deep seed and how long they would last. Plain old Cockleburr's were proven to last 17 years at that time and still have a good percentage of germination. It was just the 17th year of the test.

I've battled Johnsongrass, Privet and Spiny Amaranth almost all my life and I've never dealt with anything more persistent than the nutgrass in my garden. I sprayed it 3 times with 2 quarts of Roundup PowerMax with added surfactant last year and have already sprayed it once this year. My entire garden spot was as brown as a paper sack after spraying, until the TS moved in. This is a poor quality picture that I took yesterday but my entire garden looks just like this. The crap is as thick now as it was before I started spraying last year. I sprayed it Wednesday with another dose of 2 qts RU per 25 gallons. I sprayed nearly a whole 25 gallon on my little garden. I made sure the nutgrass was saturated to the crown. When it puts back out, I'm going to spray it with Sedgehammer +. The nutgrass in the photo is about 16" tall.

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Fur, I think you are just wasting time and money spraying it with gly. It's gonna take one of the high priced herbicides to ever have much effect.

Yellow Nutsedge is a plague.

I may be PPC. Roundup is rated as good as any chemical out there as far as effectiveness is concerned when it comes to nutsedge control. I just looked again to be sure of that. I did just read that using 10 gallons or less of solution per acre. I've been using more thinking the more the better.

One problem is, the area was completely solid in nutgrass one whole season. I'm talking about thigh high, lush nutgrass. There's no telling how many nutlets are in the ground.

I do know I'm tired of fooling with it.

Plant some cogon grass out there and it should choke out the nutgrass.

Fur, I did my master's work on controlling yellow and purple nutsedge, as well as 5 other sedge/killings species and can definitely say roundup is not an answer. Over the duration of my research, I kept up with population reduction year-over-year and gly was very poor. You have to take those online rankings with a grain of salt. I highly suspect that the ranking is based on topkill, which gly will do, rather than long-term control.

Go with one of the product we discussed and you should feel a whole lot better about your garden next year.

Sand mtn is infested with purple nutsedge. Which is by far worse than yellow nutsedge

007, sounds like you should definitely know. The ratings I was using were coming from PSU and other land grant research. PSU had it rated the same as the sulfurons.

I don't know if this is yellow or purple. I just know it's the worst thing I've ever tried to kill.