this study was conducted in the research field of iranian research institute of plant protection in karaj as strip split plots with three replications. the first factor: tillage and no-tillage, and the second factor: herbicide: glyphosate 6 l/ha, 2,4-d + mcpa 2l/ha, glyphosate + 2,4-d + mcpa (6 + 2 l/ha), glyphosate 3 l/ha, 2,4-d + mcpa 1 l/ha, glyphosate + 2,4-d + mcpa (3 + 1 l/ha), and contro...

wild barley has invaded wheat fields ever since flamprop-isopropyl was outdated in iran. newly developed herbicides such as sulfosulfuron or sulfosulfuron plus metsulfuron-methyl can control it at higher than recommended dosages, but causing significant wheat injury. hence, two dose-response experiments were conducted to evaluate their efficacy when tank-mixed with thirteen different vegetable ...

Soltani, N., Vyn, R. J., Van Eerd, L. L., Shropshire, C. and Sikkema, P. H. 2009. Effect of reduced herbicide rates on weed control, environmental impact and profitability of corn. Can. J. Plant Sci. 89: 969 975. A study was conducted over a 3-yr period (2003, 2004, and 2005) to evaluate the effect of reduced herbicide rates 20, 40, 60, 80, and 100% of the manufacturer’s recommended rate (MRR) ...

introduction soil herbicides residue in agroecosystems is one of the important problems due to herbicides application. however herbicides residue in soil extend the period of weed control. nevertheless, it may persist longer than desired and injure subsequent crops in rotation. herbicides vary in their potential to persist in the soil. some herbicides such as sulfonylurea herbicides are very pe...

This study identified the most effective methods for protecting sunflowers from weeds through treatment of crops with herbicides Euro Lightning, Lightning Plus and Express. These options provided substantial protection such as cursed thistle, field bindweed, yellow bristle grass, mustard, frost blite redroot pigweed. In fight against ragweed, excellent action herbicide Express good results. Var...

Field studies were conducted in 2007 and 2008 near Nyssa, OR, and Pasco and Paterson, WA to evaluate yellow nutsedge and broadleaf weed control and potato tolerance to imazosulfuron. No injury symptoms from imazosulfuron were evident on potato at Nyssa, whereas in Washington, imazosulfuron caused some chlorosis of potato foliage ranging from 6 to 15% and , 4% at 6 and 15 d after POST applicatio...

A new approach was developed for reducing leaching of herbicides and contamination of groundwater. Liposome-clay formulations of the anionic herbicides sulfometuron and sulfosulfuron were designed for slow release by incorporating the herbicide in positively charged vesicles of didodecyldimethylammonium (DDAB), which were adsorbed on the negatively charged clay, montmorillonite. Freeze fracture...