J. Cotton

Application of Bayesian statistics to estimate nitrous oxide emission factors of three nitrogen fertilisers on UK grasslands

Nicholas Jon Cowan, Peter Levy, Julia Drewer, Alison Carswell et autres

Trapezoidal integration by linear interpolation of data points is by far the most commonly used method of cumulative flux calculations of nitrous oxide (N2O) in studies that use flux chambers; however, this method is incapable of providing accurate uncertainty estimates. A Bayesian …

gb, pt, es, au (code pays fourni par la source)

Long-term disability after lacunar stroke

Mandip S. Dhamoon, Leslie A. McClure, Carole L. White, Kamakshi Lakshminarayan et autres

OBJECTIVES: To determine whether vascular and demographic factors predict worsening disability up to 8 years after lacunar stroke. METHODS: SPS3 (Secondary Prevention of Small Subcortical Strokes) was a clinical trial in lacunar stroke patients with annual assessment of disability using the Older …

ca, us (code pays fourni par la source)

A first record of the root lesion nematode, Pratylenchus bolivianus Corbett in England and Wales

J. Cotton, Paul Bartlett, R. M. Webb

gb (code pays fourni par la source)

Effect of Xiphinema diversicaudatum on the growth of four seedling grasses

H. A. Roberts, J. Cotton

SUMMARY In pot experiments in a glasshouse, nematode numbers equivalent to 1000 Xiphinema diversicaudatum (Micol.) Thome per litre of soil produced extensive galling on roots of seedling perennial ryegrass and tall fescue. Roots of cocksfoot and timothy had significantly fewer galls. At …

Effect of annual and perennial cropping regimes in microplots on the population density and vertical distribution of Xiphinema diversicaudatum and on soil porosity

J. Cotton

SUMMARY Long‐term trends in populations of Xiphinema diversicaudatum were measured in two microplot experiments in which annual and perennial crops of seven plant families were grown in monoculture. Numbers of X. diversicaudatum increased under perennial ryegrass, raspberry and strawberry but decreased under …

ca (code pays fourni par la source)

Observations of life‐cycle, population development and vertical distribution of Longidorus macrosoma on raspberry and other crops

J. Cotton

SUMMARY High population densities of Longidorus macrosoma were recorded in the field under raspberry, blackcurrant and cherry, and low densities under grass and alternating spring barley and fallow. Comparison of population development in the field within and between the rows of raspberry …

ca (code pays fourni par la source)

Practical studies on bud-pollination of brussels sprouts.

A. Gail Johnson, B. L. Adams, J. Cotton