The article summarizes the results of research on structure weed agrocenosis vegetable peas; controlling level its weeding by performing pre-emergence and post-emergence harrowing with medium toothed harrows; evaluation chemical method protection peas from weeds, which involved introduction 2 types herbicides, contained such active substances as S-metallochlor Imazamox. Part study areas was tre...

Among hemodialysis patients, the assessment of dry weight remains a matter of clinical judgment because tests to assess dry weight have not been validated. The objective of this study was to evaluate and validate relative plasma volume (RPV) monitoring as a marker of dry weight. We performed RPV monitoring using the Crit-Line monitor at baseline and at 8 weeks in 150 patients participating in t...

BACKGROUND AND OBJECTIVES Achieving and maintaining dry-weight appears to be an effective but forgotten strategy in controlling and maintaining normotension among hypertensive patients on hemodialysis. METHODS Qualitative review of literature to define dry-weight and its utility in achieving blood pressure control. RESULTS The concept of dry-weight has evolved over time and its definition h...

Weeds can cause serious damage during soybean development, due to allelopathy, competition for water, light and nutrients. It is necessary investigate the influence of straw, weeds Conyza spp. Digitaria insularis, in growth, production composition grains. If there allelopathic compounds at crop. The aim this study was evaluate straw maize Urochloa brizantha (A.Rich.) R.D.Webster crops spp., D. ...

to study the effects of plant density and nitrogen rates on the ability of canola (regent  cobra; an inbred variety) to compete with weeds, an experiment was conducted as a factorial complete block design with four replications. the treatments included four levels of plant density at 150, 190, 230, and 270 plants m-2, and four levels of nitrogen (n) fertil-izer at 0, 46, 92, and 138 kg ha–1. r...

We compared photosynthesis and growth of Zea mays L (corn) and four weed species, Setaria viridis (L) Beauv (green foxtail), Echinochloa crus-galli (L) Beauv (barnyardgrass), Abutilon theophrasti Medic (velvetleaf), and Amaranthus retroflexus L (redroot pigweed), following foliar applications with atrazine, mesotrione, or a combination of atrazine and mesotrione in two greenhouse experiments. P...

1. Dry weight, body length and spine length were measured for the exotic cladoceran Bythotrephes cederstroemii collected from offshore and inshore stations in southeastem Lake Michigan. Average dry weight of each developmental stage exhibited seasonal variation by a factor of more than 5. 2. Mean dry weight of Bythotrephes was closely correlated with water temperature. Contrary to the inverse r...