the present study was conducted to evaluate the antioxidant effects of artichoke on liver function in broiler chicks poisoned with ccl4. a total of 60 (ross, 308) one-d-old broiler chicks were assigned into four treatments, using a completely randomized design. experimental treatments included: 1) control (received control diet), 2) artichoke (control diet supplemented with 3 percent artichoke ...

abstract in order to efficacy evaluation of some new herbicides to control of weeds in corn, a set of field studies were conducted in 2007 at 4 province of iran, including tehran (varamin), khuzestan, fars, and kermansh. treatments were arranged in a rcbd design with four replications. treatments consisted of ultima (nicosulfuron+nimsulfuron), lumax (mesotrion+s-metolacholor+terbuthlazine), ami...

soil erosion is one of the most destructive phenomena which cause significant ecological changes in many areas. soil conservation and erosion control is essential because of the irreparable damage caused by soil erosion. soil conservation programs will not achieve until to find adequate methods of combating land degradation and ways to reduce the sediment. therefore, we need to have enough know...

Increasing shrub density hinders cattle raising in central Argentina rangelands. While roller-chopping and hand-cutting are used to remove shrubs make land accessible for grazing, studies on the effects of these practices ecosystem composition, structure functioning scarce. We assessed impact removal (a) vegetation cover, species richness diversity (b) green biomass seasonal phenological dynami...

abstract. seeds or plant organs are usually used as the materials for the long-term cryopreservation. the aim of this study is to investigate the possibility of seed cryopreservation of lilium ledebourii (baker) boiss. as an endemic and endangered species because of genetic erosion. to evaluate seed potentials for the cryopreservation, four treatments including vitrification, 30% glycerol, desi...

We tested the accuracy of an atmospheric correction method that depends on clear water bodies to infer solar and atmospheric parameters for radiative transfer equations by measuring the reflectance signature of four prominent south Texas rangeland plants with the Earth Resource Technology (LANDSAT) satellite multispectral scanner (MSS) and a ground-based Exotech Model 20 spectroradiometer. The ...

This study was undertaken to determine the non-target impacts of rangeland grasshopper control using liquid bait formulations of insecticides (canola and corn oil as carriers of carbaryl, diflubenzuron, and malathion). The research was conducted on native rangeland in Wyoming under drought conditions. Three collection methods (pitfall traps, yellow sticky cards, and sweep nets) were used to est...

The overgrazing and excessive utilization of rangelands has caused vegetationand soil degradation in many rangelands. In the rangeland management, the soil andvegetation elements, environmental factors and livestock should be considered as decisionmaking agents. Various methods are applicable for the rangeland restoration as contourfurrows and mortar stone dam. In order to evaluate the effects ...