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Implement Alley Discussion Forum

Round-up question?

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RichG

06-14-2004 22:46:00




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I have 22 acres that I am renting. Plowed it under, disced it once and then the rain started. Lottsa quack and other grasses coming up along with a ton of weeds (around 5" tall). I have to disc and smooth this field before planting which will now be in the fall because of our monsoons. Should I round up now before I finish discing or should I wait until just before seeding and round up, then finish discing and seeding?

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JMS/MN

06-15-2004 11:42:49




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 Re: Round-up question? in reply to RichG, 06-14-2004 22:46:00  
Roundup is a CONTACT herbicide. That means it kills most any plant it contacts, but has no residual effect on plants that emerge later. If you have quack in the field and don't expect to plant it until this fall, get a field cultivator and work it about every two weeks. Quack multiplies with runners just under the soil surface. If you dig them up (FC with two inch wide teeth) and they lie in the sun, they die. Summer fallowing is a good way to get rid of them. More driving time too!

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Bob

06-15-2004 10:47:20




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 Re: Round-up question? in reply to RichG, 06-14-2004 22:46:00  
If you spray the roundup now, after you've done a spring tillage operation, it will only affect weeds that have already emerged. Any quackgrass roots that have not yet had a good growth of foliage emerge will not be killed.



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Kelly C

06-15-2004 06:39:24




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 Re: Round-up question? in reply to RichG, 06-14-2004 22:46:00  
Rich I have the same problem on 6 acres I want to plant in Alfalfa with a oats cover. Disk has been sitting there for 3 weeks now 1/2 done.
I was still going to disk it up again when it dries out. Then plant any way. Was hoping to maybe get a late crop of the oats hay and get a good start on the Alfalfa for next year.
Would that not be a good idea? I dont really want to plant all my seed if its does not have a chance to grow.

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JMS/MN

06-15-2004 11:49:36




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 Re: Re: Round-up question? in reply to Kelly C, 06-15-2004 06:39:24  
Kelly, with our wet spring and cold temps, this is still a good time to put alfalfa in - either with oats or especially straight seeding. Should still get two cuts this year. Alfalfa sprouts better in late May than earlier when the oats (for combining) goes in. Soil temps are warmer now. Also, most will germinate this year, some will next year. Late August, first week of Sept is ok to straight seed alfalfa here as well. Seeded on Aug 15 back in '83, got a good stand, but that was pushing it. Some years it would be too late.

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Indydirtfarmer

06-15-2004 06:04:40




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 Re: Round-up question? in reply to RichG, 06-14-2004 22:46:00  
Round-up is "Soil Inactive". That means when it comes in contact with dirt, it no longer does anything. By discing first, you would incorperate most of the weeds with the soil, negating the effects of the round-up. By spraying now, you would eliminate those weed that are growning now. The weeds would seed themselves, as mentioned, and begin re-growth. You would be able to kill off the regrowth later this summer, right before tilling/planting again. Based on what you've told us, I'd opt for bush hogging now, then again in a few weeks. I'd save the round-up, and it's cost, for use a couple weeks before discing this fall. It won't really accomplish much, by killing off the weeds now, then just having them regrow, and dealing with them AGAIN. Also, discing now, will incorperate the weed seeds into the soil. where they will be protected, and only germinate when soil conditions are right, sometime down the road. My "opinion", wait untill you're almost ready to seed before spending time/money on prepping the field. John

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John A

06-15-2004 05:24:35




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 Re: Round-up question? in reply to RichG, 06-14-2004 22:46:00  
Rich, With grass and weeds at about 5 ft tall they are pretty much mature. And may be seeding out. It may be better to disk first, before you spend your money on chemical. Later,
John A.



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nosy

06-15-2004 07:52:08




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 Re: Re: Round-up question? in reply to John A, 06-15-2004 05:24:35  
he said 5 inches tall,not feet.



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Bill in TN

06-15-2004 04:18:13




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 Re: Round-up question? in reply to RichG, 06-14-2004 22:46:00  
I would try to keep the weeds down either by roundup or bushhoging. I think I'd roundup twice, now, and again about a week before disking in the fall.



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