Response of Galium species (cleavers) to herbicides

Non-Peer Reviewe

Выбор оптимального рабочего вектора эксплуатируемых систем методами математического программирования

The current state of the development of a laser based process chain for manufacturing fused silica optics is presented. In a first step fused silica is ablated with laser radiation to produce the geometry of the optics. A subsequent polishing step reduces the surface roughness and a third step uses micro ablation to remove the last remaining redundant material. Although the process chain is still under development, the ablation of fused silica already reaches ablation rates above 20 mm3/s with a resulting surface roughness of Ra < 5 ?m and the polishing process is able to significantly reduce this roughness

Managing roundup ready Xtend® soybean (Glycine max) using dicamba

Non-Peer Reviewe

Crop damage – more than just herbicides

Non-Peer Reviewe

Wheat ( Triticum aestivum ) cultivar response to chlormequat chloride (Manipulator®) treatment

Non-Peer Reviewe

A preferred vision for leading schools : a reflective essay

In order to be a strong leader, one must be able to implement change effectively, link curriculum to instruction, and be called to service. These three components are vital in order to be an effective administrator. Through out my paper, I have reflected on the ways I feel I can most effectively implement each criterion, and create life long learners in my teachers and students

Evaluation of new and existing desiccants in lentil

Non-Peer ReviewedGlobally, herbicide resistance has become a major challenge for many producers. In western Canada, many lentil (Lens culinaris L.) producers have great difficulty controlling Group 2 resistant biotypes. Two of these problematic weeds, wild mustard (Sinapis arvensis L.) and kochia (Kochia scoparia), are particularly challenging for lentil growers and can cause extensive yield loss when not adequately controlled. Desiccation is primarily used to dry down lentil for harvest ease and efficiency but can also be used as a late season control for actively growing weeds. The objective of this project is to evaluate the response of wild mustard and kochia to different herbicides, tank mixed with two different rates of glyphosate (450 g a.e. ha-1 and 900 g a.e. ha-1) at Saskatoon and Scott, Saskatchewan over a 2 year period. Desiccation occurred when the lentil seed moisture content was approximately 30%. Preliminary results are under investigation. Evaluation of seed and plant moisture of the treated plots is ongoing, along with an evaluation of the effects of the treatments on viability and vigour of affected weed seeds

Surface acoustic waves in finite slabs of three-dimensional phononic crystals

We study theoretically, by means of layer-multiple-scattering techniques, the propagation of elastic waves through finite slabs of phononic crystals consisting of metallic spheres in a polyester matrix, embedded in air. In particular, we focus on the study of modes localized on the surfaces of the structure. Their origin and behavior, as well as the physical parameters that influence and determine their appearance, are investigated in detail. Our results reveal the existence of absolute phononic frequency gaps in these finite structures, and point out the possibility, under an appropriate choice of the parameters, of tunable regions of frequency free of propagating and/or surface-localized modes. © 2008 The American Physical Society.Peer Reviewe

Late glyphosate applications alter yield and yield components in glyphosate-resistant canola (Brassica napus L.)

Non-Peer Reviewe