The soil half-life of glyphosate is approximately 47 days (with a range of 2 to nearly 200 days depending on soil type and various environmental conditions). But it is not active for a vast majority of that time. In order for glyphosate to be active as a herbicide, it must first (obviously) enter the plant. But glyphosate binds very tightly to soil particles almost immediately upon reaching the soil, and pesticides are not absorbed by plants while they are bound to the soil. Glyphosate is degraded relatively quickly by soil microorganisms, so there is almost never enough available glyphosate in the soil to cause plant injury. So although glyphosate can be detected in the soil for quite some time after application, it has no practical soil activity as a herbicide. We can spray glyphosate to control emerged weeds and plant a new crop on the very same day in most cases without risk of injuring the crop.
QHow many days the glyphosate still active in the soil
Question submitted By: torrcollaHow many days the glyphosate still active in the soil
Posted on February 23, 2018
Response from: Greg A. Elmore, Ph.D., Crop Protection Pipeline Lead, Monsanto Company • on August 2, 2018
Herbicide cost per acre depends on a wide number of variables including (but not limited to) weed species present, farm location, timing of application, crop seeding rate, competitiveness of crop, herbicides used, length of growing season in that location, etc. Thinking about herbicide cost is only one of many factors to consider regarding input cost as well as revenue expectations. There are fertility costs, seed costs (including traits), fuel costs, cost of insect and disease management,... Read More
How is a transgenic organism or GMO created?How is genetic engineering different from traditional agricultural breeding?With an ever-increasing global population, will transgenic organisms help increase carrying capacity or are there a greater...
Posted on July 4, 2018
Response from: Community Manager, Moderator for GMOAnswers.com • on July 30, 2018
Thank you for your questions, we will address each question separately below. How is a transgenic organism or GMO created? When people refer to Genetically Modified Organisms (GMOs), they are referring to precision plant breeding using genetic engineering. It allows plant breeders to take a desirable trait (like resistance to drought, insects, weeds, and disease) from one plant or organism and transfer it to the plant they want to improve, as well as make... Read More
Posted on June 12, 2018
Response from: Matt Muckerman, Corn States Marketing Manager, Monsanto • on July 27, 2018
Thank you for your question, and for clarity purposes, I want to mention there are multiple products under the Roundup® brand, so I am going to assume you are inquiring about Roundup Agricultural herbicides. With that said, you can get Roundup in bulk format from almost any ag retailer in the U.S. There are several thousand in the U.S. If the ag retailer near you does not carry Roundup brand glyphosate then please request it. Read More