Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Kristian Kristensen"'
Autor:
John E. Hermansen, Janni Thuesen, Uffe Jørgensen, Klaus Horsted, Kristian Kristensen, Jørgen Eriksen, Anne Grete Kongsted
Publikováno v:
Jørgensen, U, Thuesen, J, Eriksen, J, Horsted, K, Hermansen, J E, Kristensen, K & Kongsted, A G 2018, ' Nitrogen distribution as affected by stocking density in a combined production system of energy crops and free-range pigs ', Agroforestry Systems, vol. 92, no. 4, pp. 987-999 . https://doi.org/10.1007/s10457-018-0200-3
Free-range pig production is typically associated with high risks of nitrogen (N) leaching due to the pigs excretory behaviour creating nitrogen ‘hotspots’ and rooting behaviour destroying the grass sward. This challenge is reinforced at high ani
Publikováno v:
Zhenjiang, Z, Plauborg, F, Liu, F, Kristensen, K & Andersen, M N 2018, ' Yield and crop growth of table potato affected by different split-N fertigation regimes in sandy soil ', European Journal of Agronomy, vol. 92, no. Januar, pp. 41-50 . https://doi.org/10.1016/j.eja.2017.10.001
To explore the response of yield, crop growth as well as water and N use efficiency to different fertigation regimes, three years field experiment were carried out. The factors in the experiment comprised five N levels providing 0, 60, 100, 140 and 1
Publikováno v:
Kristensen, D K & Kjeldsen, C 2016, ' Imagining and doing agro-food futures otherwise: Exploring the pig city experiment in the foodscape of Denmark ', Journal of Rural Studies, vol. 43, pp. 40-48 . https://doi.org/10.1016/j.jrurstud.2015.11.011
In this paper we investigate Pig City; a project that proposes to combine pig-, tomato- and energyproduction. We argue that Pig City was an experiment challenging the established trajectory of theDanish pig production industry. Utilizing sensibilitie
Autor:
Mathias Neumann Andersen, Linda-Maria Mårtensson, Erik Steen Jensen, Kristian Kristensen, Helle Baadsgaard, Poul Erik Lærke, Kirsten Kørup, Uffe Jørgensen, Thomas Didion, Cora Münnich
Publikováno v:
Sørensen, K K, Lærke, P E, Sørensen, H B, Andersen, M N, Kristensen, K, Münnich, C, Didion, T, Jensen, E S, Mårtensson, L-M & Jørgensen, U 2018, ' Biomass production and water use efficiency in perennial grasses during and after drought stress ', GCB Bioenergy, vol. 10, pp. 12-27 . https://doi.org/10.1111/gcbb.12464
GCB Bioenergy
GCB Bioenergy
Drought is a great challenge to agricultural production, and cultivation of drought-tolerant or water use-efficient cultivars is important to ensure high biomass yields for bio-refining and bioenergy. Here, we evaluated drought tolerance of four C3 s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8750d5bed32887d8aac0b0cf4040e891
https://pure.au.dk/portal/da/publications/biomass-production-and-water-use-efficiency-in-perennial-grasses-during-and-after-drought-stress(7dc8f7e2-7bd2-4680-8ac2-72cf8d89137d).html
https://pure.au.dk/portal/da/publications/biomass-production-and-water-use-efficiency-in-perennial-grasses-during-and-after-drought-stress(7dc8f7e2-7bd2-4680-8ac2-72cf8d89137d).html
Autor:
Søren Navntoft, Kristian Kristensen, Peter Esbjerg, Anne-Mette M. Jensen, Lene Sigsgaard, Ib Johnsen
Publikováno v:
Agricultural and Forest Entomology. 18:59-67
Weed harrowing is an alternative to herbicides but it may have negative effects on epigaeic arthropods. We assessed the effects of frequent (four) versus two harrowings during the growing season on the density and diversity of generalist arthropods a
Publikováno v:
Zhenjiang, Z, Plauborg, F, Kristensen, K & Andersen, M N 2017, ' Dry matter production, radiation interception and radiation use efficiency of potato in response to temperature and nitrogen application regimes ', Agricultural and Forest Meteorology, vol. 232, pp. 595-605 . https://doi.org/10.1016/j.agrformet.2016.10.017
A meta-analysis of 12 irrigated field experiments conducted from 2003 to 2014 was performed to examine the combined effects of climate variability and nitrogen (N) application on dry matter production of potatoes in a humid temperate climate. Seasona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d061ba63fe1babcded986300fb091be0
https://pure.au.dk/portal/da/publications/dry-matter-production-radiation-interception-and-radiation-use-efficiency-of-potato-in-response-to-temperature-and-nitrogen-application-regimes(e1f581f5-7c7c-46e5-b056-dcf8b59b2ac8).html
https://pure.au.dk/portal/da/publications/dry-matter-production-radiation-interception-and-radiation-use-efficiency-of-potato-in-response-to-temperature-and-nitrogen-application-regimes(e1f581f5-7c7c-46e5-b056-dcf8b59b2ac8).html
Autor:
Arezoo Taghizadeh-Toosi, Mette Lægdsmand, Mogens Humlekrog Greve, Bent T. Christensen, Kristian Kristensen, H. S. Østergaard, Lars Elsgaard, Jørgen E. Olesen
Publikováno v:
European Journal of Soil Science. 65:730-740
Summary To establish a national inventory of soil organic carbon (SOC) stocks and their change over time, soil was sampled in 1986, 1997 and 2009 in a Danish nation-wide 7-km grid and analysed for SOC content. The average SOC stock in 0–100-cm dept
Publikováno v:
Rasmussen, I A, Melander, B, Askegaard, M, Kristensen, K & Olesen, J E 2014, ' Elytrigia repens population dynamics under different management schemes in organic cropping systems on coarse sand ', European Journal of Agronomy, vol. 58, pp. 18-27 . https://doi.org/10.1016/j.eja.2014.04.003
Elytrigia repens is a noxious perennial weed in organic cropping systems in Scandinavia. It can easily spread in any crop type and reach unacceptable infestation levels through its proliferation from rhizome fragments. This study aimed at analyzing a
Publikováno v:
Jensen, P K & Kristensen, K 2013, ' Annual grasses in crop rotations with grass seed production-A survey with special focus on Vulpia spp. in red fescue production ', Acta Agriculturae Scandinavica, Section B-Soil & Plant Science, vol. 63, no. 7, pp. 604-611 . https://doi.org/10.1080/09064710.2013.836240
This paper presents a survey of grass weeds in grass seed crops in Denmark. The survey is based on an analysis of data from a database containing monitoring of grass weeds in the period from 2004 to 2009 on an acreage of approximately 400,000 ha. The
Autor:
Cathrine Betzer, Annie Enkegaard, Lenei Sigsgaard, Jørgen Eilenberg, Kristian Kristensen, Cyril Naulin
Publikováno v:
Journal of Insect Science
The strawberry tortricid, Acleris comariana Lienig and Zeller (Lepidoptera: Tortricidae) is an important pest in Danish strawberry production. Its most common parasitoid is Copidosoma aretas (Walker) (Hymenoptera: Chalcidoidea: Encyrtidae). To identi