in order to study of barely and wheat cultivars tolerance to metribuzin, a factorial experiment was conducted as a completely randomized design, with three replications in greenhouse of agricultural research at ferdowsi university of mashhad. treatments included wheat cultivars (backcross roshan, cross arvand, bahar, sepahan, gascosion, sayonez, bam garmsiry, garmsiri, ghods, pishtaz, chamran a...

Indiscriminate use of toxic pesticides in agriculture has raised serious concerns worldwide, which led to a steady destruction soil biota as well the overall health ecosystem. The present study was designed evaluate effects selected agrochemicals such cyfluthrin (insecticide), fytran (fungicide) and oxadiargyl (herbicide) on moulting stages springtail Cyphoderus javnaus. Laboratory analysis res...

chlorophyll fluorescence induction is a rapid and noninvasive technique for measuring photosynthetic electron transport in plants. chlorophyll fluorescence measurements were performed under greenhouse condition to characterize how the fluorescence induction curves (kautsky curve) and its parameters were affected by metribuzin in susceptible and resistant junglerice (echinochloa colona (l.) link...

The herbicides alachlor, linuron, vernolate, and metribuzin were applied to plots treated with the nematicide fensulfothion or the insecticide phorate and planted to soybean in two locations in North Carolina. In 1976 treatment with fensulfothion + alachlor or vernolate, phorate + alachlor or metribuzin resulted in greater nematode population densities than no treatment, or treatment with fensu...

Binding of the triazinone derivative metribuzin to thylakoid membranes was studied in depend­ ence of tem perature and trypsin pre-treatm ent of the chloroplasts. The tem perature curve of the binding constant suggests that the lipid phase of the membrane contributes to inhibitor binding. Trypsin pre-treatm ent of the membranes removes the receptor sites for the inhibitor, while the trypsin eff...

Farmers in the Midwestern United States continue to be reliant on soil-applied herbicides for weed control in crop production, and herbicide contamination of streams remains an environmental problem. The main objective of this study was to analyze trends in concentration and load of acetochlor, alachlor, metolachlor, and metribuzin in Goodwater Creek Experimental Watershed (GCEW) from 1992 to 2...

abstractgrowth of b. japonicum isolates at different concentrations of herbicide used on soybean was studied as factorial experiment arranged in a completely randomized design with three replications. isolates b1, b6, b43 and 0, 0.125, 0.25, 0.5, 1, 2, 4, 8 and 16 folded of the recommended doses of trifluralin, metribuzin and imazethapyr herbicides were considered as factors. isolates populatio...

Herbicide degradation is one of the key processes determining whether use herbicide will have any impact on environmental quality, and it dependent various biotic abiotic factors. The present study evaluates factors such as soil type, application rate, incubation temperature, pH, microorganisms sunlight persistence metribuzin its effect enzymes. Half-lives (DT50) varied significantly with rate ...

Metribuzin is a pre- and post-emergence triazinone herbicide used in variety of crops. This degraded the environment into three major metabolites that have high water solubility, to very soil mobility, low moderate persistence soil. paper describes development an analytical method based on ultrasound-assisted extraction GC-MS/MS determination for metribuzin its main plants. The developed provid...

Jutta Thiemann and Wolfgang Barz Institut für Biochemie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität, Hindenburgplatz 55, D-48143 Münster, Bundesrepublik Deutschland Z. Naturforsch. 49 c, 186-194 (1994); received June 25/December 16,1993 Herbicide Resistance, Selection Mechanism, Photoautotrophic Cell Culture, Chenopodium rubrum For establishing metribuzin-resistant, photo...