How to kill Horsetails

[alternety]

Moderation Note: These posts were moved from the Introduction Forum because the thread became specific.

Yes Turtle. Ergo - I am trying to take a look at uptake of the material in a specific plant in comparison to several other chemicals.

It also decays into fertilizer after a while and is used as an additive to compost piles.

[Moontanman]

Ammonium sulfamate - Wikipedia, the free encyclopedia

It is sold under these brand names

Ammonium sulfamate is distributed under the following tradenames, which are principally herbicidal product names: Amicide, Amidosulfate, Ammate, Amcide, Ammate X-NI, AMS, Fyran 206k, Ikurin, Sulfamate, AMS and Root-Out.

[alternety]

It is unfortunately not sold or manufactured under those names anymore (except possibly root-out). It is no longer a listed herbicide. A while back all sorts of chemicals where reevaluated by the EU. This one is so cheap and generic no one went to the trouble (expense) of redoing tests. I believe one company tried but they were ignored. It did not get relisted.

It appears to be one of the more benign of herbicides. It decays to good things and is not particularly harmful even before it does. The delisting appears to have spread.

I have done many many hours of searching. I need an industrial supplier that will sell small (for them) quantities. I have found none willing to do so. If someone knows of such a source, not just a manufacturer, but one who actually sells to civilians in small quantities, that would solve my problem.

[Turtle]

Originally Posted by alternety

Yes Turtle. Ergo - I am trying to take a look at uptake of the material in a specific plant in comparison to several other chemicals.

It also decays into fertilizer after a while and is used as an additive to compost piles.

it is a contact effect according to my cornell source.
Ammonium Sulfamate

Originally Posted by cornell

AMS is a contact herbicide which means that it injures only those parts of the plant to which it is applied .

It appears to be one of the more benign of herbicides. It decays to good things and is not particularly harmful even before it does. The delisting appears to have spread.
17 Minutes Ago 09:27 AM

i guess "more benign" is relative characterization.

Originally Posted by cornell

ACUTE TOXICITY
Ammonium sulfamate is moderately toxic to human beings. The effects of acute exposure to AMS include irritation of the skin, eyes, and digestive tract, nausea, vomiting, diarrhea, slowed breathing, convulsions, hallucinations, coma, physical or mental exhaustion, and collapse (5, 9). Contact with ammonium sulfamate may cause burns to the skin and eyes (24, 30). The dust of ammonium sulfamate is irritating to the nose and throat and can cause coughing or difficult breathing if it is inhaled (23). Inhalation of 5,000 mg/m3 of air is immediately dangerous to life or health (18). Ingestion of ammonium sulfamate may cause gastrointestinal disturbances, such as nausea or diarrhea, in humans (18).
Repeated applications of a 4% solution to the front side of one arm of each of five human subjects for five days showed no skin irritation (15). It did not cause irritation when it was injected just under the skin (subcutaneously) in rats; when applied to rabbits eyes, it did not cause conjunctivitis (8).

Studies show that 1,600 mg/kg to 3,900 mg/kg of AMS are lethal to one-half of the rats that are experimentally fed the herbicide (3, 20). This amount of AMS is referred to as its oral lethal dose fifty, or LD50, and indicates that it takes 1,600 to 3,900 milligrams of AMS, for each kilogram of body weight of the rat, to kill 50 percent of the rats tested. (The lower the LD50 is for a chemical, the more toxic it is; the higher the LD50 the less toxic is the chemical).
...
ECOLOGICAL EFFECTS
Effects on Birds
AMS is highly toxic to birds. The oral LD50 in wild birds is 2,370 micrograms (ug)/kg (15).

i do see they mention it as a fertilizer though.

Originally Posted by cornell

INTRODUCTION
...AMS is also used as a fertilizer.

what plant species exactly do you plan to dose if i may be so bold as to ask?

[alternety]

Horsetail

[Turtle]

Originally Posted by alternety

Horsetail

i love those!! old school pot scrubbers. what, again if i may be so bold to ask, do you have in mind to do with them there horsy tails? inquiring minds want to know.

hey i was just thinking maybe you could synthesize some ammonium sulfamate at home from easier to get compounds??? we got some chemists here so maybe start a thread to that end.

[alternety]

I want them to die. Screaming if possible.

[Moontanman]

Horsetails implies an aquatic environment, applying a weed killer to an aquatic ecosystem would be a very bad thing dude.

[Turtle]

Originally Posted by alternety

I want them to die. Screaming if possible.

now the truth outs. the gods love screaming deaths like no other.
is this a potential upticker in horestail screamage for your environs?
Equisetum - Wikipedia, the free encyclopedia

Originally Posted by wiked pediac

The Field Horsetail (E. arvense) can be a nuisance weed, readily regrowing from the rhizome after being pulled out. It is also unaffected by many herbicides designed to kill seed plants, however, as E. arvense prefers an acid soil, lime may be used to assist in eradication efforts to bring the soil pH to 7 or 8.[4]...

what are your environs ecological niche speaking?

[freeztar]

If you want to kill horsetail, then find a dinosaur.
They are one of the oldest plants in N. America. They were around during the time of the dinosaurs, 65 million years ago. It's a remarkable plant.

Horsetails like moist soil, but they don't like to get their feet too wet.
If you could flood the area, you can kill them off (and everything else underwater most likely). It's a much better option than "fertilizers".