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| Registros recuperados: 42 | |
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| Hofmeijer, Merel A.J.; Melander, Bo; Salonen, Jukka; Verwijst, Theo; Zarina, Livija; Gerowitt, Bärbel. |
| Weeds remain to be the main challenge within this agricultural system, especially perennials in the north European realm. Because of increased interest in agrobiodiversity functioning, weeds should be kept within manageable limits, while on the other side encourage a specie rich weed flora. One of the PRODIVA project objectives is to investigate to which extent these two aspects can be addressed through the use of diversified crop management. In order to research this objective, weed and management data were obtained from organic farms in the baltic region over the course of two years (2015-2016) in spring sown cereal crops. The impact of the local environment and management factors on the occurring weed communities was studied in multivariate analysis... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; Crop combinations and interactions; Weed management. |
| Ano: 2018 |
URL: http://orgprints.org/33428/1/Presentation_ewrs_MHofmeijer.pdf |
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| Salonen, Jukka; Zarina, Livija; Melander, Bo. |
| Cover crops have gained popularity in cereal cropping now that they are one of the subsidized options in agri-environmental schemes of the EU. Several studies on cover/catch crops affecting nutrient leaching have been published but less information is available concerning their applicability for weed management. In our opinion, combinations of crop and cover crop types as well as crop sequencing conform IPM principles and optimize weed management. The PRODIVA project (ERA-Net Core Organic Plus Action, www.coreorganicplus.org) aims at identifying weed community associations with most common crop types in organic crop production systems. We will clarify the characteristics and relative competitiveness of cover crops providing strong weed suppression without... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2016 |
URL: http://orgprints.org/30624/1/PRODIVA%20Poster%20Cover%20Crops_IWSC2016Prague_final030516.pdf |
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| Piliksere, Dace; Zarina, Livija. |
| Good weed suppression ability is required characteristic for crops grown in organic conditions. Some authors report that crop variety mixtures can be more effective in weed suppression than the varieties in pure sowings (DidonandRodriguez,2006). Some other studies show that variety mixtures do not suppress weeds better than their pure components(Kautetal.,2008). The aim of the present study was to evaluate spring cereal(barleyandoat)variety mixtures for their weed suppression ability in agroecological conditions of Latvia. This report includes some results from the ERA-NET CoreOrganicPLUS project “Crop Diversification and Weeds(PRODIVA)”. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2017 |
URL: http://orgprints.org/33491/1/Piliksere_Zarina_Poster_Nyon_2017.pdf |
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| Hofmeijer, Merel A.J.; Melander, Bo; Krawczyk, Roman; Verwijst, Theo; Zarina, Livija; Salonen, Jukka; Gerowitt, Bärbel. |
| They create a great source of agro biodiversity, generating habitats and food sources for other organisms; yet weeds have always posed the greatest challenge in Organic Agriculture from the perspective of production. Because of the specific agricultural management of this farming system, several groups of weed species have naturally adjusted. These can be highly competitive to the crop, acquire high inputs to remove and/or spread rapidly. In this leaflet we will describe the most challenging weed species in organic spring sown cereals in the geographical area of the Baltic sea, based on existing literature and information provided by extension services. We will show and discuss their distribution from country to country and propose a classification... |
| Tipo: Report |
Palavras-chave: Education; Extension and communication Weed management. |
| Ano: 2017 |
URL: http://orgprints.org/32600/7/Geographical%20distribution%20of%20challenging%20weed%20species%20-%20References%20-%20Hofmeijer.pdf |
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| Zarina, Livija; Gerowitt, Barbel; Melander, Bo; Salonen, Jukka; Krawczuk, Roman; Verwijst, Theo. |
| Within the ERA-net CORE Organic Plus transnational programmes supported project PRODIVA producing of the information required for a better utilization of crop diversification for weed management in North European organic arable cropping systems was started. To fulfill the goal of this project- not to eradicate weed problems, which is unlikely to happen in any arable farming system, but to maintain a diversified and manageable weed flora that can support beneficial organisms- there were data from ongoing long-termed cropping system experiments from Latvia analyzed. It is hypothesised that: a) perennial weeds can be suppressed in the post-harvest period by improved cover crop establishment and pertinent selection of cover crop species; b) on-farm... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2016 |
URL: http://orgprints.org/29793/1/Zarina%20et%20all%20274-1405-1-PB.pdf |
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| Zarina, Livija; Piliksere, Dace; Zarina, Liga. |
| The data on weediness from the ongoing crop rotation experiment at the State Priekuli Plant Breeding institute were analysed on the basis of hypothesis that under-sowing in spring cereals can improve weed management. Grass/clover mixture (Trifolium pratense L. and Phleum pratense L.) as under- sowing in spring barley (Hordeum vulgare L.) was grown for one and two seasons in six field crop rotation. Numbers of weed plants in spring (BBCH 20 – 29) were recorded using 0.1 m2 big frame in 10 places; plant biomass of under-sown crops and weeds were sampled within 1.0 x 1.0 m squares after the first cut in the following year after harvesting of main crop (barley). The total of 28 weed species were registered. The most common species were Chenopodium album L.;... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2016 |
URL: http://orgprints.org/33074/1/Livija%20Zarina_conference_paper_2016.pdf |
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| Zarina, Livija. |
| Since Kelmeni farm is a good example in field crop management for other organic farms, it was invited to participate in the Core Organic Plus project, named PRODIVA, in which weeds were surveyed in more than 200 fields across regions in Finland, Sweden, Germany, Denmark, Poland and Latvia; all bordering the Baltic Sea (http://projects.au.dk/coreorganicplus/research-projects/prodiva/). In context of weed control farmer using all possible crop diversity experiences– undersowing, crop mixtures, diverse rotation, winter cover. |
| Tipo: Other |
Palavras-chave: Farming Systems; Weed management. |
| Ano: 2018 |
URL: http://orgprints.org/33580/1/successtory_nezalu%20ierobezosana_veiksmes%20piemers.pdf |
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| Piliksere, Dace; Zarina, Livija. |
| The aim of the present study was to evaluate spring cereal(barley and oat)variety mixtures for their weed suppression ability in agroecological conditions of Latvia. It was concluded that in two-years tudy,investigated spring cereal variety mixtures did not show better ability to suppress weeds if compared to their pure components.Additional studies would be necessary to evaluate root development and allelopathic activity of crop and weed plants. |
| Tipo: Other |
Palavras-chave: Weed management. |
| Ano: 2017 |
URL: http://orgprints.org/31437/1/Piliksere_Zarina_Poster_Nyon_2017.pdf |
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| Zarina, Livija; Gerowitt, Bärbel; Melander, Bo; Salonen, Jukka; Krawczyk, Roman; Verwijst, Theo. |
| Within the ERA-net CORE Organic Plus transnational programmes supported project PRODIVA producing of the information required for a better utilization of crop diversification for weed management in North European organic arable cropping systems was started. To fulfill the goal of this project- not to eradicate weed problems, which is unlikely to happen in any arable farming system, but to maintain a diversified and manageable weed flora that can support beneficial organisms- there were data from ongoing long-termed cropping system experiments from Latvia analyzed. It is hypothesised that: a) perennial weeds can be suppressed in the post-harvest period by improved cover crop establishment and pertinent selection of cover crop species; b) on-farm practices... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2015 |
URL: http://orgprints.org/30746/1/746 |
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| Zarina, Livija; Kaczmarek, Sylvia; Melander, Bo. |
| The suppression of weeds exerted by the crop plays a significant role for weed management in organic crop production. Crop species have different competitive abilities against weeds but also crop varieties vary in their suppression of weeds. Previous studies with varieties of spring cereals have demonstrated marked differences in the suppression of weeds caused by different attributes, such as stem height and leaf area index. However, little is known when different varieties of the same cereal species are mixed in different compositions both in terms of the number of varieties included and the seed rates at which they are established. Some studies have focused on yield and disease aspects but this study aimed to identify and select blends of cultivars of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Weed management. |
| Ano: 2016 |
URL: http://orgprints.org/30747/1/iwsc-2016-abstract-id-321REV_corrected_SK_LZ_BME.pdf |
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| 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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| 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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| Gerowitt, Bärbel; Hofmeijer, Merel A.J.; Melander, Bo; Krawczyk, Roman; Salonen, Jukka; Verwijst, Theo; Zarina, Livija. |
| The research-network PRODIVA focuses on a better utilization of crop diversification for weed management in North European arable cropping systems. The goal is to maintain diverse arable weed vegetation that is manageable in the long-term and could fulfil other necessary system-functions including support of beneficial organisms. The partners in PRODIVA will synthesize knowledge from terminated and running research projects and set-up selected new experiments on cover crops and variety resp. crop mixtures. Moreover, we will interact with partners from farming practice and extension services in organic agriculture. Regional fields will be surveyed for weeds to safeguard the relevance of the experimental research. Current cropping practices and their... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Crop health; Quality; Protection Weed management. |
| Ano: 2015 |
URL: http://orgprints.org/29919/1/Poster%20Crop%20diversification%20and%20weeds%20Montpellier%202015.pdf |
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| Hofmeijer, Merel A.J.; Melander, Bo; Krawczyk, Roman; Salonen, Jukka; Verwijst, Theo; Zarina, Livija; Gerowitt, Bärbel. |
| Weeds are a perpetual challenge in Organic agriculture. However, they serve multiple ecosystem services and a low competitive weed cover can be tolerated. Adding to this, is the fact that only a few species prove problematic for both the crop and the farmer. The international PRODIVA project researches the effect of crop diversity strategies on the diversity of weed communities, hypothesizing that by increasing the weed diversity, the development of problematic weeds will mitigated. A preparatory study was conducted to list the most problematic weed species in spring sown cereals in the countries involved with PRODIVA. For this a literature review was conducted in all participating countries, collecting local sources including grey literature. This was... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general Cereals; Pulses and oilseeds Weed management. |
| Ano: 2017 |
URL: http://orgprints.org/31559/1/170308%20Poster%20Freising%20Hofmeijer.pdf |
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| Kaczmarek, Sylvia; Zarina, Livija; Melander, Bo; Krawczyk, Roman. |
| Prezentowane wyniki badań są częścią międzynarodowego projektu PRODIVA - Crop diversification and weeds (http://coreorganicplus.org/research-projects/prodiva) finansowanego przez Narodowe Centrum Badań i Rozwoju i realizowanego w ramach konkursu ,,Core Organic Plus”. Projekt skierowany jest na wspieranie bioróżnorodności jako ważnego elementu kierowania zachwaszczeniem w rolnictwie ekologicznym. W pracy zaprezentowano wyniki badań polowych prowadzonych w Polsce i Łotwie, które miały na celu uzyskanie informacji na temat cech odmian i mieszanek odmian zapewniających optymalną redukcję zachwaszczenia. W badaniach zastosowano łącznie dziesięć odmian jęczmienia jarego oraz sześć odmian owsa jarego. W badaniach wykonano pomiary masy chwastów, wysokości... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Weed management. |
| Ano: 2016 |
URL: http://orgprints.org/30272/1/abstract.pdf |
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| Registros recuperados: 42 | |
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