This work presents a method of screening of alkanophenoxy carboxylic (2,4-D, 2,4,5-T, MCPA, MCPP) and phenolic (dinoterb, dinoseb, pentachlorophenol) herbicides in water. The successive steps of the method, i.e. liquid-liquid extraction with ethyl acetate and methyl-tert-butyl ether and solid phase extraction using C18-modified silica gel and styrenedivinylbenzene copolymer-packed cartridges as...

We describe a Model RSM2 (A Reliable and Scalable Multicast Model). The approach we adopt uses Proactive-Routing, Minimum-Cost Path Algorithm, Combo-casting, Active Server Based Recovery, NACKBased acknowledgement, Buffer Management, Optimized Flooding Algorithm. The main characteristic of RSM2 model is, to provide complete multicasting, i.e. at the same time more than one node can act as sende...

. The drift of MCPA downwind of an aerial application was measured using short air sampling intervals in an attempt to estimate “real-time” concentrations. Prior drift studies examined deposition patterns or measured air concentrations downwind of pesticide applications using long sampling intervals (1 to 24 hours). This preliminary study was designed to determine: 1) the Eeasibility of “real-t...

The contamination of water resources with many organic xenobiotic compounds poses a challenge to environmental sciences and technologies [1]. Although in many cases these contaminants are present only in small concentrations, the large variety of such compounds (some of which are classified as priority pollutants) is a matter of concern. Adsorption, alone or as part of a more complex water or w...

The off-site transport of pesticides with runoff is both an agronomic and environmental concern, resulting from reduced control of target pests in the area of application and contamination of surrounding ecosystems. Experiments were designed to measure the quantity of pesticides in runoff from creeping bentgrass (Agrostis palustris) turf managed as golf course fairway to gain a better understan...

Herbicide rotations and mixtures are widely recommended to manage herbicide resistance. However, little research has quantified how these practices actually affect the selection of herbicide resistance in weeds. A 4-yr experiment was conducted in western Canada from 2004 to 2007 to examine the impact of herbicide rotation and mixture in selecting for acetolactate synthase (ALS) inhibitor resist...