What is this weed?

jon f mn · Jun 24, 2018

I have this weed growing in my beans. Roundup knocked it sown, but it is tough. I hit it again today with round-up hoping to get it. Has shiney sharp leaves kinda like swamp grass, but it is growing in dry areas. Surprisingly, it died where the wheels of the tractor and sprayer hit it.

grayrider · Jun 24, 2018

Kind of looks like Cogangrass and if it is roundup will not kill it. Does it make a cotton looking seed head, are the grass leaves kind of like a saw blade, and does the vein in each blade of grass a little off set to one side?

jon f mn · Jun 24, 2018

The leaves are smooth, but sharp. No seeds yet tho.

Gary(VA) · Jun 24, 2018

Can't tell for sure but looks like some Nutsedge in there

Jim in NC · Jun 24, 2018

I'm with gary.

JD Seller · Jun 24, 2018

I will third Gary and Jim. It is yellow nutsedge. It is tough to kill. It will take two shots of RR ten days apart to knock it down. It is not a grass or broad leaf but a sedge. So it has tubers under the ground so they make it harder to kill. If any of it goes to seed it is easy to identify then. Look at the seed in the picture. If you look close at the leaf blade it looks like your original picture.

Adirondack case guy · Jun 24, 2018

I agree with others, Nutsage. We used to have lots of it when the local chicken operation was active. Farmers spread the chicken manure on their fields and they were overrun with that stuff .Apparently there was a lot of it in the chicken feed.
Loren

charlie n · Jun 24, 2018

Yellow nutsedge .Halosulfuron is the only thing that will knock it hammer dead. Very costly. Local chem dealer and I had this talk last week. Sedge Hammer is $99.00 a bottle. Makes 50 gallon and does about 1/2 acre.

Back in the day we used Basagran on sod fields. It was fairly cheap and had excellent results .The only problem is finding it now. Nobody around here sells it anymore.

Another problem is it's not cleared for forage.

Roundup might kill it in your part of the country, but it won't done here. Good Luck.

mazemeister · Jun 24, 2018

as others have said, yellow nutsedge. to make sure, cut across the stem; it will be triangular in cross section.
not much will kill it, halosulfuron is very good, bentazon also good, for pre emerge next year, metolachlor. i've never used it but supposedly EPTC is effective PRE. not much else will touch it. 2,4-D will damage but not kill.

keh · Jun 24, 2018

Extremely hard to get rid of. One old method was to fence it in and put hogs on it. They will root up the nuts and eat them. I never tried it.

KEH

Dylan Berhorst · Jun 24, 2018

I am getting water grass in my lawn Any way get rid of it?

WayneLee · Jun 24, 2018

25 - 30 years ago we used Basogran and it worked fairly well. I do not know if it is sold now.

4play · Jun 24, 2018

Sometimes it's easier to dig it up than spray chems on it, especially in a garden, just dig deep and get the bulb/nut. I spray MSMA on nutsedge with pretty good results, there are sedge specific chemicals but I like the MSMA for all the other weeds and grassy type weeds in the yard.

Mark-Mi · Jun 24, 2018

The best cure for Nutsedge is tile.

Butch(OH) · Jun 25, 2018

Same here

Texasmark1 · Jun 25, 2018

"Yellow" Nutsedge around here....just invaded me a few years ago....brought it in on equipment from a leased pasture.

This works for me and I got at the local farm store, not Amazon.

https://www.amazon.com/PBI-Gordon-855140-Nutsedge-Control/dp/B00CAO3PRY

1948CaseVAI · Jun 25, 2018

domyown.com sells SedgeHammer but says it is not for crop areas. Spectracide makes a product that advertises it kills nutsedge and I know it works on lawns but not sure of the cost of spraying a whole field.

Phil9N3667 · Jun 25, 2018

we called it nutgrass when I helped on the farm about 40 years ago.

gbs · Jun 25, 2018

Basagran with the (right surfactant) don't remember if it was coc or nis for soybeans, it will get rid of it just don't get impatient it may take 2 weeks for complete kill.

Copperhead don't play · Jun 26, 2018

The only way to get rid of nutgrass is to move away and leave it.
I had a load of sand delivered 11 years ago to make some concrete. Today I am still pulling the new sprouts that comes up each year in the left over pile of sand. The seed has lived for 11 years.

What is this weed?

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