Malathion in mixture with acetolactate synthase (ALS)-inhibiting herbicides synergizes the control of weed species that have evolved metabolism-based resistance to ALS-inhibiting herbicides. However, the effect of malathion-based herbicide programs on conventional and imidazolinone-resistant (Clearfield) rice systems still need to be evaluated. Studies were conducted to determine the tolerance ...

In order to investigate physiological and biochemical changes of wheat under stress residue of Imazethapyr herbicide (Imazethapyr), an experiment was conducted in a completely randomized design with four replications in greenhouse conditions at university of Mohaghegh Ardebili. The treatments consisted of five dose levels of herbicide Imazethapyr (0, 0.011, 0.022, 0.033 and 0.044 micrograms of ...

efficacy of fomesafen and storm (bentazone+aciflorfen) herbicides on common bean (phaseolus vulgaris l.) weed control were evaluated in a randomized complete block design with four replications during 2008 in lorestan province. herbicides were applied postemergence at three trifoliate growth stage of common bean. herbicide injury on weeds reached maximum three days after treatments and common b...

Roger L. Sheley U.S. Department of Agriculture–Agricultural Research Service, 67826-A Highway 205, Burns, OR 97720 The impact of invasive weed management on plant community composition is highly dependent on location-specific factors. Therefore, treatment means from experiments conducted at a given set of locations will not reliably predict community response to weed management elsewhere. We de...

Combinations of glufosinate with nicosulfuron, among other post-emergent herbicides, are promising for weed controlin maize. However, some these herbicides can cause injury and have undesirable effects on the maize, so it is necessaryto investigate their selectivity cultivation. The aim this study was to evaluate glufosinate, nicosulfuron andcombinations, by analysing agronomic performance crop...

Herbicide use is among the most criticized aspects of modern farming, especially as it relates to genetically engineered (GE) crops. Many previous analyses have used flawed metrics to evaluate herbicide intensity and toxicity trends. Here, I show that herbicide use intensity increased over the last 25 years in maize, cotton, rice and wheat. Although GE crops have been previously implicated in i...

The effect of the external pH in the range of 5.5 to 8.0 on the activity of three PSII herbicides (diuron, atrazine and dinoseb) was studied in isolated thylakoid membranes by means of prompt and delayed fluorescence induction kinetics. Well-expressed pH dependence was established for prompt fluorescence parameters (Fv/Fm, Fi/Fm) as well as for delayed fluorescence parameters (I1, I2). Two type...

Abstract: The objective of this work was to evaluate injury symptoms on soybean not tolerant dicamba (3,6-dichloro-2-methoxybenzoic acid), as well crop yield, after the application sub-rates herbicide simulate physical drift in tropical conditions. Dicamba rates 0, 5.8, 14.4, 28.8, 57.6, and 576 g acid equivalent per hectare were applied at vegetative (V3) reproductive (R1) stages soybean, usin...

Aiming to reduce herbicide leaching, "in situ" adsorption of herbicide-micelle formulations to soils was explored. Sulfentrazone or metolachlor were solubilized in cationic micelles, and these herbicide-micelle formulations were applied to sandy and alluvial soils. Sulfentrazone adsorption to the soils was negligible; however, its adsorption via its solubilization in micelles and their adsorpti...

Reed canarygrass (Phalaris arundinacea) is a widely distributed invasive species that dominates many natural areas and restoration sites. Cost-effective suppression and restoration strategies need to be developed for plant communities affected by this species. Pretreatments designed to disrupt rhizome apical dominance may augment herbicide performance by making reed canarygrass rhizomes more su...