Herbicides are an important component of weed management in wheat, particularly in the southeastern US where weeds actively compete with wheat throughout the winter for nutrients and reduce tillering and ultimately the yield of the crop. Some wheat varieties are sensitive to metribuzin, a low-cost non-selective herbicide, leading to leaf chlorosis, stand loss, and decreased yield. Knowledge of ...

field experiments were conducted to evaluate the effect of thiobencarb and oxadiargyl herbicides on rice (oryza sativa l.) and their possible residual effects on spinach (spinacea oleracea l.) and lettuce (lactuca sativa l.) at dashtnaz and gharakhil agricultural research stations, iran. treatments included thiobencarb at 3.16 and 6.33 kg a.i. ha-1, oxadiargyl at 0.15 and 0.30 kg a.i. ha-1 and ...

O comportamento eletroquímico do herbicida metribuzin foi estudado em solução aquosa com eletrodos de carbono vítreo, em pasta de carvão/nujol, carvão/óleo de mamona e pela utilização de voltametria cíclica, voltametria de onda quadrada, voltametria de pulso diferencial, coulometria e eletrólises em potencial controlado, para fins de quantificação e estudos de degradação. Os produtos majoritári...

A rapid method for determining residues of the herbicide metribuzin in soil by laboratory experiment under controlled conditions is described. Field soil fortified with herbicide at concentration of 5 mg kg-1 soil, and maintained at field capacity moisture regime and kept at ambient temperature 25 ± 5°C. The soil samples were extracted with different ratio of methanol/water solution and the res...

Acute toxicity and effects of sublethal concentrations of oxadiargyl herbicide (3% EC) were examined on DNA damage (Comet assay) and histopathological changes in common carp (Cyprinus carpio) fingerlings with average weight and length of 19.15±1.05 g and 10.09±0.47 cm, respectively. The fish were exposed to 0.1, 0.3 and 0.5 mg/L of the herbicide for 30 days. Estimated 96-h LC50 value for oxadia...

Objective: Vanillin (Va), a phenolic substance is a natural antioxidant with proven free radical scavenging activity and offers protection against oxidative damage. This study was designed to investigate the ameliorative effect of Va against metribuzin (Mtz) pesticide-induced toxicity and oxidative stress in rats. Methods: Thirty-two rats were equally divided into four groups: control, vanillin...

OBJECTIVES The aim of the study was to investigate effects of the triazine herbicide metribuzin on signal crayfish Pacifastacus leniusculus Dana by determining oxidative stress (thiobarbituric acid reactive substances) and antioxidant indices (total superoxide dismutase, catalase, glutathione reductase) in hepatopancreas, muscle, and gill as well as assessing their histopathology. DESIGN Cray...

The aim of this study was to assess the impact of metribuzin in surface waters on fish under experimental conditions. The effects of subchronic exposure to metribuzin on fish growth and the development of histopathological changes in selected organs (gill, kidney, liver) and on activity of some biochemical markers (CYP450, EROD) in Danio rerio were investigated during a 28-day toxicity test. Ju...

Metribuzin is an herbicide widely used for weed control that has been identified as a groundwater pollutant. It contaminates the environment even when it is used according to the manufacturer's instructions. To reduce herbicide leaching and increase weed control, new controlled release formulations were developed by entrapping metribuzin within a sepiolite-gel-based matrix using two clay/herbic...

Herbicide resistance in Chlamydomonas reinhardii cells was induced by mutagenesis with 5-fluorodeoxyuridine and ethylmethanesulfonate. Four mutant strains were isolated and analyzed for resistance against DCM U-type or phenolic inhibitors o f photosynthetic electron transport. The mutants were different in both the extent and the pattern o f their resistance: the R /S value, i.e. the ratio o f ...