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Pesticide use by region over time. The first synthetic herbicides were discovered in the 1930's and 1940's. This was the era when synthetic antibiotics, plastics, and many other materials became available.
Arthur Rothstein's Farmer and Sons Walking in the Face of a Dust Storm, a Resettlement Administration photograph taken in Cimarron County, Oklahoma, in April 1936. The Dust Bowl was the result of a period of severe dust storms that greatly damaged the ecology and agriculture of the American and Canadian prairies during the 1930s.
Pentachlorophenol (PCP) is an organochlorine compound used as a pesticide and a disinfectant. First produced in the 1930s, it is marketed under many trade names. [5] It can be found as pure PCP, or as the sodium salt of PCP, the latter of which dissolves easily in water. It can be biodegraded by some bacteria, including Sphingobium ...
The development of organophosphate insecticides dates back to the 1930s and is generally credited to Gerhard Schrader. [28] At the time pesticides were largely limited to arsenic salts (calcium arsenate, lead arsenate and Paris green) [29] or pyrethrin plant extracts, all of which had major problems. [30]
In New Zealand in the 1930s, farmers reportedly had trouble with exploding trousers as a result of attempts to control ragwort, an agricultural weed. [1] Farmers had been spraying sodium chlorate, a government recommended weedkiller, onto the ragwort, and some of the spray had ended up on their clothes. Sodium chlorate is a strong oxidizing ...
Zyklon B (German: [tsyˈkloːn ˈbeː] ⓘ; translated Cyclone B) was the trade name of a cyanide-based pesticide invented in Germany in the early 1920s. It consists of hydrogen cyanide (prussic acid), as well as a cautionary eye irritant and one of several adsorbents such as diatomaceous earth .
In 1931 Hickson & Welch Ltd was founded, from the site that had been destroyed in 1930. From 1944 the company made DDT, becoming the UK's largest manufacturer. Hickson and Welch (Holdings) Ltd was incorporated on 28 September 1951. It made dyestuffs, DDT , and timber preservatives. It had the subsidiaries Hickson & Welch Ltd, and Hickson's ...
In the 1930s, a concern grew about the use of these pesticides; particularly against the use of arsenic insecticides that had resulted in deaths during the 1920s and 1930s. This growing concern and the discovery of newer more effective and inexpensive products such as DDT , BHC , aldrin , chlordane , parathion , captan and 2,4-D led to an ...