What is aminopyralid contamination?

What is aminopyralid contamination?

An herbicide called aminopyralid has contaminated many common organic amendments like compost, hay, manure, and straw, with growing chatter in the gardening community about this risk. And if you’re not careful, your soil could become poisoned for years to come.

What is aminopyralid used for?

What is aminopyralid? Aminopyralid is a recently introduced herbicide developed by Dow AgroSciences to help control noxious, poisonous and invasive broadleaf weeds to maintain the productivity of our grasslands and rangelands, maintain safe conditions along our rights-of-way and help preserve our natural areas.

What products contain aminopyralid?

Aminopyralid is a selective herbicide used for control of broadleaf weeds, especially thistles and clovers. It is in the picolinic acid family of herbicides, which also includes clopyralid, picloram, triclopyr, and several less common herbicides.

Is aminopyralid residual?

Aminopyralid can also provide residual weed control activity controlling re-infestations and reducing the need for re-treatment depending on the rate applied and the target weeds. Aminopyralid Technical is a 95.3% manufacturing use product.

How is aminopyralid contamination tested?

End users like vegetable farmers and gardeners can test for aminopyralid contamination in compost or manure by conducting a bioassay before planting broadleaf plants in soil that has been amended by suspect compost or manure.

How do you test for manure for aminopyralid?

How to test for aminopyralid – The Bean Test. Beans, peas, tomatoes and white clover show aminopyralid contamination quickly. Fill some pots with contaminated compost and others with a known ‘safe’ compost, certified organic composts are fine. Sow the seeds and wait for approximately 3 – 4 weeks.

Which plants are affected by aminopyralid?

Aminopyralid (marketed as Milestone™, Chaparral™, and Opensight™), is an auxinic growth regulator herbicide and will cause damage to sensitive broadleaf plants such as tomato, lettuce, beans and peas.

What elements are present in aminopyralid?


PubChem CID 213012
Molecular Formula C6H4Cl2N2O2
Synonyms Aminopyralid 150114-71-9 4-amino-3,6-dichloropicolinic acid 4-amino-3,6-dichloropyridine-2-carboxylic acid 2-Pyridinecarboxylic acid, 4-amino-3,6-dichloro- More…
Molecular Weight 207.01
Dates Modify 2022-06-25 Create 2005-08-09

How is aminopyralid tested?

How do you get rid of aminopyralid in soil?

The best way is to select a patch of ground and spread the manure a few inches thick on the surface and then rotovate it well into the soil. Don’t bother sowing anything in there because it could be counter productive as the chemical will be taken up and bound to the lignin in the crop.

What is the half life of aminopyralid?

about 72.2 days
Aminopyralid is generally very persistent in the environment. Under favorable light conditions, it can rapidly photodegrade in shallow, clear water (though not in murky deeper water), with a half-life of 0.6 days. It photodegrades slowly in soil, with a half-life of about 72.2 days.

What herbicide contains aminopyralid?

Capstone combines aminopyralid with the amine formulation of triclopyr contained in Garlon® 3A specialty herbicide to provide control of herbaceous broadleaf weeds, vines and woody plants.