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maine USA

I done some researching lately and a variety of growers use roundup to kill weeds in their patches. The way I am reading the information, it sounds like they are doing it almost directly in front of the vine, or in one case, just before the greenhouses are removed from the patch in spring.
How many days must elapse before the vine can come in contact with the sprayed area and have no damage from the Round Up? thanks Kathy

10/22/2007 9:47:30 PM

Colorado

I've heard that when roundup comes in contact with dirt its deactivated. If thats true,you can spray anytime. Make sure no mist gets on your pumpkin leaves. It will make nice little round dead spots on the leaves(or worse). It's never a bad idea to be on the cautious side. Spray a week before you set plants out.

10/22/2007 10:26:41 PM

[email protected]

Roundup will only kill the plants it comes in contact with, You could spray close to the plant and as long as you don't allow any on the pumpkin plant, your fine, Now that's the theory but I'm not brave enough to do that.
Roundup get taken up to the plant through the leaves and is sent to the roots where it does its damage. Any sprayed on the ground will not stay and be taken up by a plant that grows over it. I believe the round up disapates within 6 to 8 hours.
Also wind will carry it so be carefull
Eddy

10/22/2007 10:27:47 PM

maine USA

Sounds encouraging guys, it's getting a little hard on the knees crawling around pulling all those weeds. thanks Kathy

10/22/2007 11:07:18 PM

[email protected]

I've accidentally hit the leaves with Roundup. They turn yellow. But since glyphosate can only move 6-8 inches, the vines survive & the fruit isn't impacted at all. I wouldn't recommend over-the-top sprays but cautious use is fine.

10/23/2007 12:24:32 AM

Rhode Island

kathy

using round up is probably the best thing we ever added into our program. saves hours and hours of needless weeding
(i used to spend days making piles of pulled up weeds -not to mention those dirty knees-lol
we spray the newly emerged weeds in the spring three to four days before pulling off greenhouses,then once again mid season (just do not spray on a windy day and stay several ft away from the plants )
a real time saver.
once we get into september we dont bother anymore as the season is drawing to a close

pap

10/23/2007 6:59:54 AM

Georgia

I love roundup and it works great. Just like everyone said be careful of the wind a little drift can damage a plant. I spray it around my plants and it helped a bunch.

10/23/2007 10:30:01 AM

Lymington UK

Only a sniff of roundup will give most plants a headache. So to be sure, only spray early in the morning or late in evening when there is normaly less wind and get someone to hold a bit of cardboard between plant and spray as a shield.
Ian

10/23/2007 4:01:27 PM

maine USA

Thank you all for responding to my post, it's been very helpful. Actually Paps it was your greenhouse removal in the spring that I was referring to! :}. thanks again Kathy

10/23/2007 7:10:39 PM

South Bloomfield, Ohio

Tremor is right. Have used Roundup for many years. I even used a dilute solution of 1 oz./gal and sprayed between secondaries. It slows the growth of brodleaves at that rate and eventually kills the grasses. I don't mind pulling the tougher broadleaves. Please note that spraying between secondaries occurs beneath the foliage.

10/23/2007 7:37:46 PM

So. Maine

To follow up on Kathy's question for growers who spray round up how long does the area stay weedless. Do you need to reapply every so often ?

10/24/2007 1:50:55 AM

Georgia

You do have to reapply round up every couple of weeks and stay away from the all season long Round-Up.

10/24/2007 9:05:00 AM

Litchfield N. H. 03052

You can use Round Up more often if you use your head. Increase the size of the spray droplets,lower the pressure and use a flat spray tip.I have sprayer herbicides commercially for over 40 years
Bill R

10/24/2007 9:10:49 AM

Burlington Ma

why not just use salt marsh hay to cover the area?

10/24/2007 12:41:45 PM

Westford, MA

I think the name is "Kills All". It's got a higher % of the active ingredient in round-up which is something like (16%)
and it costs alot less. I heard the patent or something lapsed on the formular for Round-up, so a few co.s have adopted the the product w/varying (%) of active ingredient

10/24/2007 1:57:25 PM