In the present study, antifouling booster biocides, irgarol 1051 and diuron, were measured in seawater and sediments in ports and marinas of Bushehr, Iran. To the best of our knowledge, in the Persian Gulf there is no any record about analysis of these compounds in coastal waters, however there are considerable amount of information about the concentration of antifouling booster biocides in Eur...

The fate of organic herbicides applied to agricultural fields may be affected by other soil amendments, such as copper applied as a fungicide. The effect of copper on the leaching of diuron and glyphosate through a granitic and a calcareous soil was studied in the laboratory using sieved-soil columns. Each soil was enriched with copper sulfate to obtain soil copper concentrations of 125, 250, 5...

O controle de plantas daninhas infestantes na soja torna-se prática importante para evitar perdas produtividade grãos. Diante disso, objetivou-se avaliar a seletividade e eficácia herbicidas pré-emergentes associados ou não ao glyphosate aplicado em pós-emergência da cultivar DM 57i52. experimento foi conduzido delineamento blocos casualizados, com quatro repetições. Foram testados 15 tratament...

Methyl-tert-butyl ether (MTBE), a fuel oxygenate that is added to gasoline, commonly contaminates aquatic systems, many of which are already contaminated with pesticides. The toxic effects (EC(50) value) of several pure pesticides (Diuron, Linuron, Dichlofluanid, Sea nine, Irgarol and tributyltin (TBT)) were measured and compared with the EC(50) value of the pesticide mixed with MTBE, using the...

Field studies were conducted from 2006 to 2010 under weed-free conditions in south Texas and in the Texas High Plains to determine sesame tolerance to applied postemer‐ gence-directed herbicides. Injury was greatest when herbicides were applied to 15 cm of the main stem compared to herbicide applications made to 5 cm of the main stem height. Glyphosate at 0.84 kg ae/ha and pyrithiobac-sodium at...

A new method for the determination of the herbicide diuron, using a flow injection manifold and photoinduced chemiluminescence detection, is presented. The pesticide, in basic medium, was irradiated on-line with UV light (254 nm) for 53 s. A short discussion about the possible irradiation products is included. The chemiluminescent response of the photoproducts was induced by oxidation with pota...

The expansion of sesame growth has led to one the biggest challenges in weed management mainly due limited options selective herbicides for control eudicots species. This study aimed evaluate selectivity diuron, s-metolachlor or imazethapyr herbicide treatments isolation, a tank mixture, when applied preemergence only, association with diuron sprayed postemergence during cultivation. Two experi...

Diuron (DCMU; 3-(3,4-dichlorophenyl)-1,1-dimethylurea) concentrations were analyzed at 24 sites along shorelines of Ishigaki and Iriomote Islands in September 2019. The diuron ranged from <0.6 to 32 ng l-1. Slightly high as 19 l-1 observed a fishing port mooring point for boats Ishigaki, respectively, implying contamination likely antifouling paints boats. A slightly concentration (14 l-1) was ...

ethylene oxide have generally provided m a x i m u m crabgrass control when applied in mixtures containing diuron. In these and other greenhouse studies at the Delta Branch Experiment Station, Stoneville, Mississippi, ethoxyla ted nonylphenol surfactants containing 15-30 moles of ethylene oxide were also effective in increasing diuron toxicity, but t h e y w e r e comparatively poor in increasi...