Talk:Herbicide

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This page is in serious need of sources, so i marked it as such --12.4.81.145 17:25, 11 August 2006 (UTC)

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Anonymous, do you have a reference for the "sound science" claim about 2,4,5,T? Kat 18:55 7 Jul 2003 (UTC) (2,4,5T updated based on claim anyway, I did my own research)

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Anonymous user editing Atrazine entry: there is more than adequate discussion in the literature regarding both the acute toxicity and chronic oncogenicity of atrazine. While I agree that atrazine has received uncommon scrutiny, and that some of the earlier claims of oncogenic effects at ridiculously low thresholds has been debunked, your statement that it is in effect harmless is not defensible. Kat 22:40, 11 Aug 2003 (UTC)

Contents 1 Herbicide 2 Better categorization, please 3 First herbicide was not 2,4-D 4 WikiProject class rating

[edit] Herbicide

Technically qualified contribution for sodium chlorate and ammonium sulphamate needed. Avril 09:25, 26 July 2007 (UTC)

[edit] Better categorization, please

Why are the different herbicides not sub-categorized into selective/non-selective, pre-emergent/post-emergent, foliar/contact/systemic? This type of info and categorization would greatly increase the utility of Wikipedia to herbicide users.--Mergi 17:12, 4 October 2007 (UTC)

[edit] First herbicide was not 2,4-D

"The first widely used herbicide was 2,4-dichlorophenoxyacetic acid, often abbreviated 2,4-D. It was developed by a British team during World War II and first saw widespread production and use in the late 1940s. ..."

No. First herbicides used were probably salts (rock salt, sea salt, potassium salts) more than 2000 years ago (just think about the biblical mentioning of rendering fields sterile by salting the soil, or the same that Romans did around Cartago after its defeat). First technical chemicals, used as herbicides were copper and iron sulfates, sulfuric acid and most importantly, chlorates (sodium, potassium, magnesium chlorates). These were used from the mid 19th century onwards. In early 20th century, petroleum- and tar-derived herbicides, such as creosote oil, the inorganic potassium cyanate (still used in some regions mainly as a defoliant) and first synthetic organic compounds (notably 2,4-dinitrophenol and 2,4-dinitrocresole) went in use. 2,4-D and related compounds were first synthetic selective herbicides.--84.163.98.9 17:06, 16 October 2007 (UTC)

[edit] WikiProject class rating

This article was automatically assessed because at least one WikiProject had rated the article as start, and the rating on other projects was brought up to start class. BetacommandBot 16:27, 10 November 2007 (UTC)