Does Roundup stay in the soil long term?

Question

I am planning a large pumpkin patch. The area was previously an empty, weed filled field. If I put Roundup on it now, will the Roundup remain in the soil and destroy the pumpkins next spring?

Answer 1

Round-up is a contact killer. It has NO soil residual
at all. It will only kill what it comes in contact with as
you spray it. You can spray it on BARE ground, then
plant and it will NOT hurt the plants that come up.

Answer 2

This Site Might Help You.

RE:
Does Roundup stay in the soil long term?
I am planning a large pumpkin patch. The area was previously an empty, weed filled field. If I put Roundup on it now, will the Roundup remain in the soil and destroy the pumpkins next spring?

Answer 3

According to an article written about Roundup, the active ingredient may persist in the soil as long as 141 days or as little as 3 days... depending on soil conditions, microbes present in the soil and weather.

Since you're planting your pumpkins next Spring, you shouldn't have anything to worry about.

However, if you think you have a buildup of herbicides in your soil, I'd recommend purchasing some activated charcoal and applying it at a rate of 1 to 2 pounds per 100 square feet and then incorporating into your soil down to a depth of 5 to 6 inches with a rototiller. The activated charcoal will essentially absorb/inactivate the herbicides and prevent the roots of your plants from being exposed to them.

Also... the addition of compost prior to planting will help introduce beneficial microbes that will help break down any pesticides/herbicides that are left over in your soil. Not to mention helping your pumpkins grow healthier.

Hope this answered your question!
Good luck with your pumpkins!

Answer 4

Roundup doesn't stay in the soil, it gets completely broken down relatively quickly. Farmers routinely spray their paddocks, wait the required time and then plant wheat crops. They wouldn't be allowed to do this if it was toxic. They don't have months to wait and if it stayed in the soil as long as some people are saying it would kill the newly planted crop as it emerged.

There are alot of different toxicity levels in weedkillers always use the least toxic and always read the chemical sheets the companies provide. You would be able to find the roundup sheet probably on Monsanto's site.

Why not read the bottle at your local garden centre and see what it says about planting after spraying. Hope this helps.

Answer 5

How Long Does Roundup Last

Answer 6

Consider the source of the information you are being given. Ag Chemical Dealer? Really? Educate yourself before using chemicals. Start here: http://www.planetnatural.com/roundup-killing-soil/

Answer 7

I think 2-3 weeks, but call the 800 number on the bottle of Roundup and they will be able to answer your question. It may also be effected by if there is or isn't rain.

Answer 8

No Roundup biodegrades within days maybe even hours of touching the ground

Answer 9

There is no residual effect in the soil.....only the plant in contact. Once is the plants you are trying to kill is dead....go for it and plant anything...I haven't looked this pre emergence up, but someone told me recently that a product called Preen can be used to prevent weeds coming back up ....and not affect vegetable seeds or plants...what a deal....kill the weeds, use Preen and immediately put seeds or plants in the ground

Answer 10

In theory the Roundup goes away fairly quickly. However I read something recently that indicated that residue in the soil lasts a lot longer. It wouldn't hurt the pumpkins growth, but might bother you if you don't care to have herbicides in produce. Of course with pumpkins they aren't likely to be eaten.

I'm sorry, but I'm not sure where I read it.

Answer 11

You should never use Roundup anywhere near the garden ,that you want to keep growing things in anyway. That is the harshest, it works well on your weeds, kills them dead and gone and everything else that it gets on and near. It would take a few years for it to completely wash out of the soil to be safe enough to grow things again, unless you dig up all the contaminated soil and add new. Oh and one more thing, you could leave the field with weeds, just get some top soil and go around the field making small hills with it and plant the seeds in the hills, pumpkins grow most anywhere they are like a weed themselves. Good Luck, I'm rooting for you!