I believe that Mr. Hanlin is referring to selective systemic herbicides, not a non-selective systemic like Roundup. Roundup is glyphosate, specifically isopropylamine salt. Glyphosate comes in other formulations. Roundup is widely believed to be quickly broken down in the soil. If you must use a herbicide, it is probably your safest bet. I'll post on the safest and most effective ways to use it later in the week.
Other herbicides like Dicamba are quite active in the soil and may travel in the soil. When ingested by animals, 2,4-D isn't broken down; instead it's excreted in its original form. Some of the preemergent herbicides linger in the soil for long periods of time. Everything depends on what class of chemicals you use and how well you understand them.
I have other posts planned on all aspects of using herbicides. Right now, I'm getting imput from specialists to make sure that the planned posts are clear, accurate, and up to date.
no subject
This is the best article that I've found foe a general overview of how different classes of herbicides work.
I believe that Mr. Hanlin is referring to selective systemic herbicides, not a non-selective systemic like Roundup. Roundup is glyphosate, specifically isopropylamine salt. Glyphosate comes in other formulations. Roundup is widely believed to be quickly broken down in the soil. If you must use a herbicide, it is probably your safest bet. I'll post on the safest and most effective ways to use it later in the week.
Other herbicides like Dicamba are quite active in the soil and may travel in the soil. When ingested by animals, 2,4-D isn't broken down; instead it's excreted in its original form. Some of the preemergent herbicides linger in the soil for long periods of time. Everything depends on what class of chemicals you use and how well you understand them.
I have other posts planned on all aspects of using herbicides. Right now, I'm getting imput from specialists to make sure that the planned posts are clear, accurate, and up to date.