Clopyralid and imazamox are successfully used for weed control during the first years of regeneration pedunculate oak forests. Hence, question that arises is how these herbicides affect microorganisms, especially activity dehydrogenase enzyme, when they reach soil. Two study sites were selected in regenerated forests, two applied doses (clopyralid, 100 g a.i. ha−1 120 ha−1; imazamox, 40 48 ha−1...

Introduction Mesquite in dense thickets reduce grass production and make livestock management more difficult. To compound the problem, treatments which top-kill mesquite, such as chaining, shredding, high-intensity fires, or herbicides such as 2,4,5T or triclopyr (Remedy), stimulate regrowth from stem bases and increase stem number per plant and per land area (Fisher et al. 1959). An alternativ...

PURPOSE: Yellow starthistle is one of most problematic invasive species in grass and rangelands in the western United States. It has expanded its distribution since the 1950’s threatening native species’ diversity and reducing the utility of rangelands for livestock. Control of yellow starthistle has relied heavily on the use of picloram and clopyralid. Although these herbicides have been widel...

At this time CDF anticipates the possible use of the following herbicides for invasive weed control and reforestation purposes: Clopyralid, Glyphosate, Imazapyr, Sulfometuron methyl, and Triclopyr. New products, formulations and application techniques may provide better control and improved environmental toxicology profiles. The listed products may prove to be ineffective on a specific species....

The practice of composting mixed green wastes from community collection programs has been on the increase as a means to reduce organic debris to landfills. Recent reports of plant injury have appeared and were attributed to residues of the herbicide clopyralid in compost. Phytotoxicity issues with compost have been reported previously to result from other factors, including heavy metal content,...

The herbicides chlorsulfuron and clopyralid were taken up rapidly by excised pea root tissue and accumulated in the tissue to concentrations ten and four times those in the external medium, respectively. Uptake was related linearly to external herbicide concentration over a wide concentration range, implying that transport across the membrane is by nonfacilitated diffusion. Uptake of both compo...

The present study proposes an integrated system based on the synergetic action of solar photocatalytic oxidation with surface flow constructed wetlands for the purification of wastewater contaminated with pesticides. Experiments were conducted at pilot scale using simulated wastewater containing the herbicide clopyralid. Three photocatalytic methods under solar light were investigated: the phot...