Consulta: creatorFacets:"Willas, Jakob"
Registros recuperados: 7
Data/hora: 12/06/2024 02:01:57

Forskellige sorters konkurrenceevne overfor ukrudt
Provedor de dados: 21
Autores: Hansen, Preben Klarskov; Kristensen, Kristian; Willas, Jakob.
Sorter med en god konkurrenceevne overfor ukrudt har en hurtig fremspiring og vækst, de er langstråede og de har udbredte blade.
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Crop combinations and interactions Weed management Breeding; Genetics and propagation.
Ano: 2006
URL: http://orgprints.org/7878/1/7878.doc

Genetic potential for grain yield in spring barley varieties and variety mixtures in variable organic environments
Provedor de dados: 21
Autores: Østergård, Hanne; Kristensen, Kristian; Hovmøller, Mogens; Willas, Jakob.
For organic crop production, well-characterised varieties increase the possibilities for controlling diseases and weeds and compensating for deficits in nutrients. Variation in grain yield was studied in about 150 spring barley varieties and variety mixtures and 20 combinations of location, growing system and year. Choice of variety was found to be as important a factor for grain yield as other factors in the management. Some variety mixtures out yielded even the best variety in the mixture, when this was grown in pure stand. Finally, a concept for organic variety testing of spring barley was developed. This Danish project is part of a European COST Network on sustainable low-input cereal production (SUSVAR) which coordinates studies in different countries...
Tipo: Conference paper, poster, etc.
Palavras-chave: Crop health; Quality; Protection Regulation Crop combinations and interactions Weed management Breeding; Genetics and propagation Biodiversity and ecosystem services.
Ano: 2006
URL: http://orgprints.org/8136/1/Hanne_Oestergaard_spring_barley_varieties.pdf

Forslag til forsøgsdesign for WP1 2004 og 2005 på Forskningscenter Flakkebjerg
Provedor de dados: 21
Autores: Hansen, Preben Klarskov; Rasmussen, Ilse A.; Kristensen, Kristian; Willas, Jakob.
Dokumentet indeholder forslag til forsøgsdesign for BAR-OF, WP1 forsøget beliggende på Forskningscenter Flakkebjerg i 2004 og 2005
Tipo: Report
Palavras-chave: Crop combinations and interactions Cereals; Pulses and oilseeds Weed management Production systems Surveys and statistics Specific methods.
Ano: 2004
URL: http://orgprints.org/3417/1/3417.pdf

Resistant barley varieties may facilitate control of Ramularia leaf spot
Provedor de dados: 21
Autores: Pinnschmidt, Hans O.; Sindberg, Susanne A.; Willas, Jakob.
Ramularia leaf spot (RLS) is widely present in Denmark nowadays and has the potential to reach severity levels high enough to cause economic damage. The results of multi-location surveys and field trials of several years suggest that varietal resistance can be an efficient means for controlling RLS. The spring barley cultivars most affected by RLS possess mlo-resistance against powdery mildew while the least affected ones do not. Other mildew resistances as well as varietal susceptibility to other foliar diseases were not clearly related to the RLS reaction pattern of neither spring- nor winter barley cultivars. Promising RLS resistance donors may be the spring barleys Power, Helium, Isabella, Nathalie, Cruiser and Isotta and the winter barleys Lonni,...
Tipo: Journal paper
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation.
Ano: 2006
URL: http://orgprints.org/10244/1/10244.pdf

Hvad er en god vårbyg til økologisk jordbrug?
Provedor de dados: 21
Autores: Rasmussen, Ilse A.; Østergård, Hanne; Willas, Jakob; Nielsen, Niels Erik; Hansen, Preben Klarskov; Hovmøller, Mogens; Backes, Gunter.
Gennemgang af hvad en god vårbygsort er for økologisk jordbrug. Sortsvalg, udbytte, sortsblandinger, næringsstofoptagelse, ukrudtskonkurrenceevne, sygdomsrobusthed, molekulære markører.
Tipo: Report
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2004
URL: http://orgprints.org/3435/1/3435.pdf

A weed suppressive index for spring barley (Hordeum vulgare L.) varieties
Provedor de dados: 21
Autores: Hansen, Preben Klarskov; Willas, Jakob; Kristensen, Kristian.
A screening programme for crop variety competitiveness would ideally be based on only a few, non-destructive measurements of key growth traits. In this study we measured the weed suppressive ability of 79 varieties of spring barley in two ways: 1) directly, by weed coverage assessments under weedy conditions at three Danish locations in 2002-2004, and 2) indirectly, by non-destructive measurements of varietal growth traits under weed-free conditions in 17 other experiments in Denmark in 2001-2003. Based on just four varietal growth traits (reflectance, leaf area index, leaf angle and culm length), we successfully developed a method for indexing the weed suppressive ability of spring barley varieties. The suppressive index ranged from 12% in ‘Lux’ and 55%...
Tipo: Journal paper
Palavras-chave: Crop combinations and interactions Weed management Breeding; Genetics and propagation.
Ano: 2008
URL: http://orgprints.org/11294/2/11294.pdf

Egenskaber ved sorter af vårbyg til økologisk dyrkning
Provedor de dados: 21
Autores: Østergård, Hanne; Kristensen, Kristian; Willas, Jakob; Deneken, Gerhard.
Sorternes dyrkningsmæssige egenskaber bliver meget vigtigere, når skadegørere og næringsstoftilførsel ikke kan kontrolleres med pesticider og syntetisk gødning. I et nyt FØJO-projekt er det derfor målet at karakterisere de økologiske dyrknigsegenskaber hos vårbygsorterne (vårkornsorterna)
Tipo: Journal paper
Palavras-chave: Breeding; Genetics and propagation Cereals; Pulses and oilseeds.
Ano: 2002
URL: http://orgprints.org/638/1/vaarbyg_egenskaber.pdf