Besides the label and various publications, you may check with US Forest Service on their use, and they have some project level and planning level documents on uses of pesticides and their effects in EIS or EAs.  Glyphosate is one of the vegetation treatments used, and various types of applications.  From past analyses, I remember glypgosate adheres quickly to soils, reducing its mobility.  There is much information and many uses to consider.  

Dear Emma,

Please have a look at these PDF attachments.

Good luck

Dear Emma,

The glyphosate invented by the company Monsanto, sold under the famous name Roundup. The current state of scientific knowledge on the toxicology and eco-toxicology of Roundup currently lacks transparency and unification of research. Indeed, possible effects on human health and the biosphere are highlighted in public opinion, but these remarks often lack scientific support for verified or rejected. The first people affected by the Roundup side effects are the users. Sometimes, precautions for use are not applied. Failure to wear personal protective equipment may result, for example, in skin irritation dermatitis, eye irritation and severe eye damage. After use, Roundup is more particularly glyphosate found in water and can cause allergic contact dermatitis even when present only 1% in water. Studies have shown that Roundup does not cause "minimal inconvenience" and contact when personal protective equipment is not properly worn. It can have an influence on people living in the vicinity of spreading, or having any contact with treated products such as fruit pickers. Roundup would have adverse effects on mitosis or cell division. Since Roundup leads to cell division problems even in minute quantities, it is not surprising that a study questioned Roundup in the face of a 100% increase in late spontaneous abortions. Moreover, studies (epidemiology study of North Carolina and Iowa in the United States) highlight the connection between the increase in cancers of non-Hodgkin's lymphoma (cancer of the immune system) in the agricultural population and the use of Roundup. Roundup carries health risks for humans. However, Roundup's interactions with living organisms are not only about humans but also about all living beings: fauna and flora. The interactions between the living world and the Roundup are multiple and their impacts numerous, they can be of direct or indirect nature. The cellular mechanisms of man and other living beings are substantially identical. So it seems logical to think that if the Roundup has harmful effects on the human being, it also has on the fauna and the flora. The use of Roundup also has undesirable effects on wildlife after its use, because as this product destroys the flora present, it modifies and destroys the living environment or food reservoir of all fauna that has no other choice to migrate, adapt or die.

The district Ituzaingó is located in the southeast of the city of Cordoba, Argentina, in the urban periphery. This neighborhood is adjacent to two private property fields, soybean plantations for the most part. Fumigations of these plantations are carried out on land as well as by air, which causes a large dispersion of herbicides towards the population of this district. Analyzes showed that the water in the neighborhood was polluted so the government provided water tanks to the inhabitants, but not covered, these tanks also became contaminated because of aerial fumigations. Another very interesting case is the fumigations by the Colombian government on the border between Colombia and Ecuador. In 2006, the administration of Alvaro Uribe decided to resume fumigation in the southern region of the country to stop the cultivation of coca leaf. Three weeks after this resumption of fumigation, the Ecuadorian peasants who live on this border have filed a complaint against the Colombian government. They argued for the indiscriminate destruction of their plantations and health problems due to fumigated glyphosate "in Colombia". Apparently, this product has spread because of the wind and it has touched the territory Ecuadorian.

 With my best regards

Prof. Bachir ACHOUR

Phil Eberbach -- Charles Sturt University -- has published a series of papers on glyposate and its persistence 

Dear Emma Fain,

Please also have a look at these RG links and PDF attachments.

Article The impact of glyphosate herbicides on soil microbial activi...

Article Effect of Glyphosate on Soil Microbial Activity and Biomass

Article The Effects of Glyphosate and Atrazine Mixture on Soil Micro...

Article Glyphosate effects on soil rhizosphere-associated bacterial ...

Article Impact of glyphosate on soil microbial biomass and respirati...

Poster The herbicide Glyphosate affects nitrification in the Elbe e...

Article Environmental and health effects of the herbicide glyphosate

Chapter Effects of Herbicide Glyphosate and Glyphosate-Based Formula...

Article Glyphosate persistence in seawater

Article Environmental fate of glyphosate and aminomethylphosphonic a...

Chapter Ecotoxicology of Glyphosate and Glyphosate-based Herbicides

Chapter Forty Years with Glyphosate

Article Effects of the herbicide Roundup on freshwater microbial com...

Article The effect of glyphosate on soil microbial activity, microbi...

Article Effects of glyphosate on rhizosphere soil microbial communit...

Article Effects of glyphosate on the bacterial community associated ...

Article Impact of Glyphosate on the Rhizosphere Microbial Communitie...

Article Effects of Glyphosate and Two Herbicide Mixtures on Microbia...

Article Repeated glyphosate exposure induces shifts in nitrifying co...

Article Effects of glyphosate on nitrogen fixation of free‐living he...

Article Influence of the herbicide glyphosate on soil microbial comm...

Article Glyphosate toxicity and the effects of long-term vegetation ...

Article Effects of three herbicides on soil microbial biomass and activity

Article The effect of glyphosate application on soil microbialactivi...

Article Impact of glyphosate and glyphosate-based herbicides on the ...

Article Glyphosate: Environmental contamination, toxicity and potent...

Article Effects of Roundup herbicide on diatom populations in the aq...

Best of luck!

Similar discussion ongoing here https://www.researchgate.net/post/RoundupR_the_dangerous_weed_killer_from_Monsanto?_iepl%5BviewId%5D=PdjOc7vAGoBcixXcMyUgD4Gx&_iepl%5BsingleItemViewId%5D=iHF1R8JWsu11kCpChlRsWAir&_iepl%5BpositionInFeed%5D=17&_iepl%5BhomeFeedVariantCode%5D=clst&_iepl%5BactivityId%5D=1005347393376259&_iepl%5BactivityType%5D=person_add_comment_question&_iepl%5BactivityTimestamp%5D=1534134697&_iepl%5Bcontexts%5D%5B0%5D=homeFeed&_iepl%5BtargetEntityId%5D=Q%3A5b704ccceb03895c0d799422&_iepl%5BinteractionType%5D=questionView

Thank you very much for your materials.

I have one article on glyphosate in the form of a manuscript sent to the editors. He has not yet passed the review process.

Thanks for the articles.