Weed emergence models and weed population models have shown to be important tools for decision making. However, there have been no attempts to integrate a weed emergence model with a population dynamics model to build an improved model with increased predictive capacity. In this paper, a method of integrating both types of model is presented and an application building a mathematical model base...

La sustentabilidad de los ambientes agrícolas en la región pampeana húmeda argentina es afectada por el monocultivo soja (Glycine max (L.) Merr.). baja eficiencia uso recursos del ambiente durante barbechos y su efecto negativo sobre sostenibilidad productividad sistemas producción hace necesaria adopción prácticas tales como inclusión un cultivo cobertura (CC) invernal entre cultivos renta esti...

The article reviews the weed species composition of oat, sunflower, wheat, buckwheat, rapeseed and flax agrophytocenoses on 390 fields in 21 districts Altai Krai: Aleyskiy, Bistroistokskiy, Baevskiy, Burlinskiy, Kamenskiy, Kosikhinskiy, Krutikhinskiy, Kytmanovskiy, Loktevskiy, Mamontovskiy, Novichikhinskiy, Pankrushikhinskiy, Rebrikhinskiy, Rubtsovskiy, Shipunovskiy, Sovetskiy, Tretyakovskiy, T...

The usefulness of genetic identification varieties for seed quality analyses becomes important, when we suspect the presence another variety, species or even genus, based on morphological traits in purity analysis and germination test, With analyses, doubt about authenticity naked oats (Avena nuda L.) variety 'Kamil' was successfully solved. There were atypical seeds with chaff among samples th...

Fructan was precipitated from a water and ethanol extract of oat (Avena sativa L.) and barley (Hordeum vulgare L.). The degree of polymerization and response on a differential refractometer, based on peak area and height, was compared to fructan collected from a lead-based HPLC column and to commercially available inulin. Statistically significant differences are discussed.