Results 211 to 220 of about 3,030 (253)

Determination of cereal herbicide residues in environmental samples by gas chromatography

Journal of Chromatography A, 1996
Gas chromatographic analysis of cereal herbicide residues in water, soil, plant and air is reviewed. Herbicides widely used in spring and winter cereals, i.e., phenoxyacids, benzonitriles, ureas, triazines, dinitroanilines, chloroacetamides and thiocarbamates, are considered.
Rosa Ana Perez, J L Tadeo, C Sánchez-Brunete   +2 more
exaly   +4 more sources

The degradation of the herbicide benzoylprop ethyl on the foliage of cereal seedlings

Pesticide Biochemistry and Physiology, 1974
Abstract The breakdown of the herbicide benzoylprop ethyl [SUFFIX, ethyl N -benzoyl- N -(3,4-dichlorophenyl)-2-aminopropionate] has been examined in wheat, oat, and barley seedlings after application of 14 C-labeled herbicide to the foliage. Within 15 days of the application the route and rate of the breakdown were similar in the plants of all ...
K.I. Beynon, T.R. Roberts, A.N. Wright
exaly   +2 more sources

The economics of herbicide use in cereal crops in New Zealand

New Zealand Journal of Crop and Horticultural Science, 1988
Abstract A simple model of net return for herbicide usage in cereals, based on yield losses caused by weeds, was used to derive breakeven losses for herbicides used in New Zealand. For wheat crops with average yields (4.5 t/ha) at 1987 prices, breakeven losses varied from 2.1% to 9.2% for weeds other than wild ...
Graeme W. Bourdôt, David J. Saville
exaly   +2 more sources

Analysis of herbicide residues in cereals, fruits and vegetables

Journal of Chromatography A, 2000
The determination of herbicide residues in cereals, fruits and vegetables by chromatographic methods is reviewed. The principal chemical groups of herbicides, like phenoxyacids, benzonitriles, ureas, triazines, dinitroanilines, chloroacetamides, carbamates, uracils, glyphosate and bipyridylium compounds, are considered.
Tadeo Lluch, José Luis, Sánchez-Brunete, C., Pérez Martín, Rosa Ana, Fernández, M. Dolores   +3 more
openaire   +3 more sources

HPLC–Residue Analysis of the Herbicide Pyridate in Cereals

International Journal of Environmental Analytical Chemistry, 1983
For many reasons residue analysis of plant protecting chemicals is becoming of increasing importance. The demand of modern trace analysis techniques is to detect significantly and sensitively values down to levels in the ppb range or even less. Aggravating circumstances are the complex multicomponent sample matrices out of whom the residue analysis has
W, Lindner, H, Ruckendorfer
openaire   +2 more sources

An economic threshold model for spraying herbicides in cereals

Weed Research, 1993
Summary: Résumé: ZusammenfassungA model has been developed for calculating the economic benefit of early spraying of herbicides in wheat and barley crops, using data derived from routine herbicide evaluation field experiments. Annual grass and broadleaf weed densities are converted to weed units using a weighting for the competitiveness of each species.
I. D. BLACK, C. B. DYSON
openaire   +1 more source

Treatment with the herbicide TOPIK induces oxidative stress in cereal leaves

Pesticide Biochemistry and Physiology, 2013
Leaf disks as well as intact 7-day-old plants of winter wheat (Triticum aestivum L., cv. Mironovskaya 808), winter rye (Secale cereale L., cv. Estafeta Tatarstana), and maize (Zea mays L., cv. Kollektivnyi 172MV), were treated with the aryloxyphenoxypropionate class herbicide TOPIK, concentrate-emulsion (active ingredient is clodinafop-propargyl (CP ...
Alexander S, Lukatkin, Albina N, Gar'kova, Anna S, Bochkarjova, Olga V, Nushtaeva, Jaime A, Teixeira da Silva   +4 more
openaire   +2 more sources

Orthogonal array optimization of a multiresidue method for cereal herbicides in soils

Journal of Chromatography A, 2008
Nearly 40 herbicides, commonly used for barley, were selected for analysis in soils of this crop. The primary objective was to develop a multiresidue method taking into account that herbicides belonged to different chemical families. Some preliminary experiments with different solvents in combination with water, acetic acid and ammonium hydroxide, were
C, Díez, E, Barrado, P, Marinero, M, Sanz   +3 more
openaire   +2 more sources

Evaluation of herbicides to manage herbicide-resistant corn poppy (Papaver rhoeas) in winter cereals

Crop Protection, 2010
Corn poppy is the most important broad-leaved weed in winter cereals in southern Europe. It is an increasing problem due to the appearance of herbicide-resistant biotypes. Experiments were conducted in north-eastern Spain with three corn poppy populations to determine the level of resistance to 2,4-D and tribenuron using seed-germination tests.
J. Torra, A. Cirujeda, A. Taberner, J. Recasens   +3 more
openaire   +1 more source

Soil dissipation of the herbicide isoxaben after use in cereals

Weed Research, 1993
Summary: Résumé: ZusammenfassungThe soil dissipation of the herbicide isoxaben was studied in field trials in Belgium in winter cereals treated with green manure, cow manure or pig slurry before sowing. Wheat was sown and the soil sprayed with 125 g isoxaben ha−1 in October. Soil samples were analysed by GLC.
J. ROUCHAUD, F. GUSTIN, M. VAN HIMME, R. BULCKE, R. SARRAZYN   +4 more
openaire   +1 more source