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Crop diversification and weeds Acronym: PRODIVA Organic Eprints
Melander, Bo; Gerowitt, Bärbel; Salonen, Jukka; Verwijst, Theo; Lundkvist, Anneli; Zarina, Livija; Hofmeijer, Merel A.J.; Sylwia, Kaczmarek; Roman, Krawczyk.
Diversification of crop sequences (WP 1): Perennial weed species can be managed when cover crops / green manure crops are included in the crop sequence but interventions must be species dependent, e.g. Elytrigia repens can be promoted by green manures because they prevent post-harvest cultivations. Cirsium arvense and Sonchus arvensis are two perennials that can be controlled by full-season grass-clover subjected to regular mowing for green manuring purposes and this measure has immediate application. Cover crops for diversification (WP 1):  Fast growing cover crops producing copious biomasses are generally useful for the suppression of weeds but need to be abandoned when severe infestations of Elytrigia repens require post-harvest cultivations for...
Tipo: Report Palavras-chave: Weed management.
Ano: 2018 URL: http://orgprints.org/35024/1/COPlus_2018%20PRODIVA_final_report_Organic%20Eprints.pdf
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Crop diversification and weeds in organic cereal production Organic Eprints
Salonen, Jukka; Melander, Bo; Gerowitt, Bärbel; Lundkvist, Anneli; Verwijst, Theo; Krawczyk, Roman; Kaczmarek, Sylvia; Zarina, Livija.
PRODIVA Project introduction
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions; Weed management.
Ano: 2016 URL: http://orgprints.org/29680/1/PRODIVA%20Poster%20Crop%20diversification%20and%20weeds_SMTP2016Helsinki.pdf
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Crop diversification and weeds in organic cereal production Organic Eprints
Salonen, Jukka; Melander, Bo; Gerowitt, Bärbel; Lundkvist, Anneli; Verwijst, Theo; Krawczyk, Roman; Kaczmarek, Sylvia; Zarina, Livija.
PRODIVA Project introduction and promotion
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions; Weed management.
Ano: 2016 URL: http://orgprints.org/30107/1/PRODIVA%20Poster%20Crop%20diversification%20and%20weeds_SMTP2016Helsinki.pdf
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Inbjudan till möte – Resultat från EU-projektet PRODIVA Organic Eprints
Lundkvist, Anneli; Verwijst, Theo.
Inbjudan till möte den 25 juli 2018 där resultat från EU-projektet PRODIVA presenteras, bland annat resultat från ogräsinventeringar och intervjuer genomförda 2015-2016.
Tipo: Other Palavras-chave: Crop combinations and interactions; Biodiversity and ecosystem services; Weed management.
Ano: 2018 URL: http://orgprints.org/33521/1/Inbjudan%20till%20PRODIVA%20projektm%C3%B6te%2025%20juli%202018.pdf
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Presentation av Core Organic projektet PRODIVA vid fältvandring den 8 juni 2016 i Sala Organic Eprints
Lundkvist, Anneli; Verwijst, Theo.
Presentation av Core Organic projektet PRODIVA vid en fältvandring den 8 juni 2016 i Sala, Västmanland, Sverige.
Tipo: Other Palavras-chave: Crop combinations and interactions; Biodiversity and ecosystem services; Weed management.
Ano: 2016 URL: http://orgprints.org/33519/1/F%C3%A4ltvandring%20Sala%208%20juni%202016%20-%20PRODIVA.pdf
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PRODIVA, Crop species mixtures for weed suppression: Deliverability No. D2.3 Technical report Organic Eprints
Verwijst, Theo; Lundkvist, Anneli; Pers Berglund, Anna; Krawczyk, Roman; Kaczmarek, Sylvia.
The aim of the studies performed in PRODIVA working package 2 was to assess the weed suppressive ability of crop mixtures (spring barley + peas) compared to ability of pure crops to suppress weeds. The work was done by means of field trials in which natural weed populations were used while controlled experiments were used with Elytrigia repens or Sinapis alba as a model weeds. Over a period of three years, 5 field experiments and 9 experiments under controlled conditions were performed in Poland and Sweden. In all experiments, performance was assessed in terms of the crops ability to compete against weeds (AC). The ability to withstand competition from weeds (AWC) and the relative weed biomass in the intercrop, compared to weed biomass in the sole...
Tipo: Report Palavras-chave: Crop combinations and interactions; Biodiversity and ecosystem services; Weed management.
Ano: 2018 URL: http://orgprints.org/33522/1/PRODIVA_WP2_Deliverability%20No.%20D2.3%20Scientific%20communication.pdf
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Prodiva project - Crop species mixtures for weed suppression Organic Eprints
Verwijst, Theo; Lundkvist, Anneli; Krawczyk, Roman; Kaczmarek, Sylvia.
The aim of this study is to assess the weed suppressive ability of crop mixtures and impact of weeds on crop yield as a function of species and densities by means of field experiments and controlled experiments with mixtures of barley and pea, conducted in Sweden and Poland. The performance of crop mixtures was compared to the performance of pure crops with regard to their ability to suppress weeds. In the fields, natural weed populations were used while the controlled experiments employed Elytrigia repens or Sinapis alba as a model weed. Preliminary results from the controlled experiment in Sweden showed that the presence of a crop (sole crop or intercrop) significantly diminished the growth of E. repens. The ability to compete was lower in peas,...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions; Biodiversity and ecosystem services; Weed management.
Ano: 2018 URL: http://orgprints.org/33509/1/Abstract%20WP2%2018th%20EWRS%20Symposium%20Slovenia%202018.pdf
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PRODIVA Project: Crop species mixtures for weed suppression� Organic Eprints
Verwijst, Theo; Lundkvist, Anneli; Krawczyk, Roman; Kaczmarek, Sylvia.
The aim of this study is to assess the weed suppressive ability of crop mixtures and impact of weeds on crop yield as a function of species and densities by means of field experiments and controlled experiments with mixtures of barley and pea, conducted in Sweden and Poland. The performance of crop mixtures was compared to the performance of pure crops with regard to their ability to suppress weeds. In the fields, natural weed populations were used while the controlled experiments employed Elytrigia repens or Sinapis alba as a model weed. Preliminary results from the controlled experiment in Sweden showed that the presence of a crop (sole crop or intercrop) significantly diminished the growth of E. repens. The ability to compete was lower in peas,...
Tipo: Other Palavras-chave: Crop combinations and interactions; Biodiversity and ecosystem services; Weed management.
Ano: 2018 URL: http://orgprints.org/33516/1/S02-O%20%20041%20%20Verwijst%20et%20al.%20PRODIVA%20WP2.pdf
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PRODIVA WP2. Crop mixtures for weed suppression. Annual Report 2015 Organic Eprints
Verwijst, Theo; Lundkvist, Anneli.
In order to assess the weed suppressive ability of a pea/barley crop mixture and the component crops in sole cropping, a controlled outdoor experiment was performed at the Swedish University of Agricultural Sciences, Uppsala, Sweden, in the summer of 2015. A substitutive completely randomized experimental design was used with seven treatments and six replicates. The weed species planted in the experiment was Elytrigia repens (L.) Desv. ex Nevski. At three occasions leaf area index (LAI) was optically measured using a LAI-2200C Plant Canopy Analyzer. Two destructive harvests were taken in order to assess the biomass of different plant parts from each of the component species. At the first harvest leaf area was measured in order to calibrate the optical LAI...
Tipo: Report Palavras-chave: Production systems; Biodiversity and ecosystem services; Weed management.
Ano: 2015 URL: http://orgprints.org/33109/1/Verwijst%20et%20al_2015_PRODIVA%20WP2%20Annual%20report%202015.pdf
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PRODIVA WP2. Crop mixtures for weed suppression. Annual Report 2016 Organic Eprints
Verwijst, Theo; Lundkvist, Anneli; Krawczyk, Roman; Kaczmarek, Sylvia.
The aim of WP2 is to assess the weed suppressive ability of crop mixtures as a function of species and densities, using a functional approach. During 2016, field experiments and controlled experiments with mixtures of barley and pea were conducted in Sweden and Poland. The performance of crop mixtures was compared to the performance of pure crops with regard to their ability to suppress weeds. In the fields, natural weed populations were used while the controlled experiments employed Elytrigia repens or Sinapis alba as a model weed. The purpose was to quantify weed suppressive ability of the crops, the impact of weeds on crop yield, and to identify crop traits responsible for the effects on weeds and crop yield. Preliminary results from the controlled...
Tipo: Report Palavras-chave: Production systems; Biodiversity and ecosystem services; Weed management.
Ano: 2016 URL: http://orgprints.org/33110/1/Verwijst%20et%20al_2016_PRODIVA%20WP2%20Annual%20report%202016.pdf
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Undersown effect in weed management in organic cropping systems Organic Eprints
Zarina, Livija; Salonen, Jukka; Hofmeijer, Merel A.J.; Gerowitt, Bärbel; Lundkvist, Anneli; Verwijst, Theo; Sonderskov, Mette; Melander, Bo; Kaczmarek, Sylvia; Krawczyk, Roman.
The main reason for controlling weed abundance in agricultural crops is the risk for qualitative and quantitative reductions in crop yields. Although there are no simple standard solutions available for weed control in organic agriculture, however, some cultural practices—in particular, undersow in spring cereals—can be critical components of weed management. To study this thesis, specific research has been carried out in the CORE Organic Plus PRODIVA project in six northern European countries—Denmark, Finland, Germany, Latvia, Poland & Sweden. Density of weed species were assessed in 109 organic fields situated in different agro–ecological conditions of region. The highest number of weed species fixed in surveyed fields was 93 (in Denmark). The most...
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2017 URL: http://orgprints.org/33077/7/agrosym2017_Abstract_Zarina%26.pdf
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Väletablerad gröda och tajmad mekanisk bekämpning - bästa sättet att kontrollera ogräs! Organic Eprints
Lundkvist, Anneli; Verwijst, Theo.
Väletablerade grödor tillsammans med tajmad mekanisk bekämpning ger bra förutsättningar för att kontrollera ogräsen. Vidare är det viktigt att alternera mellan närande och tärande grödor i växtföljden. Det är erfarenheter som Tomas Svensson har fått från att bedriva ekologisk odling på en gård nära Sala i Västmanland, Sverige.
Tipo: Other Palavras-chave: Production systems; Biodiversity and ecosystem services; Weed management; Sweden.
Ano: 2018 URL: http://orgprints.org/33559/1/TS_weeds_success%20story_SE.pdf
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