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article/chapitre/communication
ouvrage
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congrès/colloque
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article/chapitre/communication
K. Ponder ; J. Pritchard ; R. Harrington ; J. Bale | 2000Effects of nitrogen deficiency in hydroponically grown barley seedlings (Hordeum vulgare L.) on the development and reproduction of the aphid Rhopalosiphum padi (L.) (Hemiptera: Aphididae) were investigated. Plant growth was significantly reduce[...]article/chapitre/communication
W. Jeschke ; P. Baumel ; N. Rath ; F. Czygan ; P. Proksch | 1994A recently developed empirically based modelling technique was used to quantify uptake, flow and utilization of C and N in Lupinus albus L., uninfected and parasitized by Cuscuta reflexa Roxb. plants over a 12 d period during flowering and early[...]article/chapitre/communication
W. Jeschke ; N. Rath ; P. Baumel ; F. Czygan ; P. Proksch | 1994Nodulated Lupinus albus L. was grown on quartz sand in the greenhouse and supplied with a N-free culture solution. Half the plants were infected with Cuscuta reflexa Roxb. at 33 DAS. An empirically based modelling technique was developed to quan[...]article/chapitre/communication
O. Bonato ; F. Schulthess ; J. Baumgartner | 1999A population model for maize growth and development driven by temperature, solar radiation, soil water and soil nitrogen is presented. A time-varying distributed delay model is used to describe the dynamics of the attributes number, biomass and [...]article/chapitre/communication
J. Hibberd ; W. Quick ; M. Press ; J. Scholes ; W. Jeschke | 1999Orobanche species are holoparasites which are very efficient sinks for host-derived solutes. Here, we report the use of direct measurements of xylem sap solute concentrations and water fluxes, together with a modelling procedure to calculate ele[...]ouvrage
F. Clark, - Auteur ; T. Rosswall, - Auteur | Stockholm [SWE] : Swedish Natural Science Research Council | Ecological bulletins, ISSN 0346-6868 | 1981article/chapitre/communication
article/chapitre/communication
S. Duffield ; R. Bryson ; J. Young ; R. Sylvesterbradley ; R. Scott | 1997The effect of nitrogen fertiliser on populations of the cereal aphids Sitobion avenae and Metopolophium dirhodum on winter wheat was investigated in a three year field experiment. Naturally occurring aphid populations were monitored on three nit[...]article/chapitre/communication
C. Caputo ; A. Barneix | 1997The effect of different N supply on amino acid export to the phloem was studied in young plants of wheat (Triticum aestivum L. cv. Klein Chamaco), using the exudation in EDTA technique. Plants were grown in a growth cabinet in pots with sand, an[...]