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Registros recuperados: 42
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2016. gada projekta rezultāti. Organic Eprints
Zarina, Livija.
...
Tipo: Report Palavras-chave: Weed management.
Ano: 2017 URL: http://orgprints.org/33078/1/Prodiva_rezultati%202016.pdf
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Atskaite: 2017.gada projekta rezultāti Organic Eprints
Zarina, Livija.
2017.GADA PROJEKTA REZULTĀTI
Tipo: Report Palavras-chave: Weed management.
Ano: 2018 URL: http://orgprints.org/33079/1/Prodiva_Atsk_2017_0.pdf
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Can variety mixtures of spring barley benefit weed management? Organic Eprints
Sønderskov, Mette; Melander, Bo; Kaczmarek, Sylvia; Zarina, Livija.
Weed suppressing abilities of organic spring barley varieties
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2018 URL: http://orgprints.org/33542/1/EWRS_18_WP3.pdf
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Cover crop effect in weed management: project PRODIVA monitoring results Organic Eprints
Zarina, Livija; Zarina, Liga.
Weed survey was done in twenty fields of ten organic farms in Latvia in 2015 and 2016 to identify and group weed species due their susceptibility for crop diversification and to fix cover crops effect on weediness. Among the most common species were:TAROF, STEME,TRIIN, CIRAR,VERAR,ELYRE, POAAN, EQUAR.Weed infestation was affected also by cover crop species.
Tipo: Other Palavras-chave: Weed management.
Ano: 2017 URL: http://orgprints.org/31438/1/posteris_LLU2017_Virsauga_efektiv_Prodiva.pdf
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Cover crops in cereals – better companions than weeds? Organic Eprints
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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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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Crop diversification for weed management in North European organic arable cropping systems. Introduction to the study of international research-network on diversification and weed management: PRODIVA. Organic Eprints
Hofmeijer, Merel A.J.; Gerowitt, Bärbel; Krawczyk, Roman; Salonen, Jukka; Verwijst, Theo; Zarina, Livija; Melander, Bo.
The international research network PRODIVA aims to improved utilization of crop diversification for weed management in northern European organic arable cropping systems. The over-all aim is to support organic agriculture for the exploitation of crop diversification methods to improve weed management and still maintain a diverse weed flora. Hypothesized is that crop diversification can improve weed management while ensuring a diverse weed flora by the employment of: (I) pertinent crop sequencing that mitigates noxious weed species (II) improved cover crop establishment with selected competitive cover crop species (III) crop mixtures utilizing the resources better than sole crop species resulting in more weed suppression (IV) variety mixtures exerting a...
Tipo: Conference paper, poster, etc. Palavras-chave: Biodiversity and ecosystem services; Weed management.
Ano: 2016 URL: http://orgprints.org/30633/1/Poster%20PRODIVA%20Praag%20-%20MAJ%20Hofmeijer.pdf
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Crop diversification for weed management in organic arable cropping systems Organic Eprints
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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Crop diversification for weed management in organic arable cropping systems Organic Eprints
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 fulfil 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/30741/1/746
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Crop diversification for weed management in organic arable cropping systems Organic Eprints
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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Crop diversity - a crucial remedy for weed management in organic cropping Organic Eprints
Salonen, Jukka; Zarina, Livija; Melander, Bo.
A wide variety of crop species in crop rotations has turned out an essential means to obtain diversification in organic cropping systems. Moreover, the potential of cover crops to assist the main crop in weed suppression has been studied in Denmark, Finland and Latvia. Long-term field experiments in Denmark and Latvia demonstrated that crops with different life cycles and life spans in crop sequence resulted in a relatively low and manageable pressure of annual weeds. The study was part of the PRODIVA project (Core Organic Plus) in which crop diversification for better weed management has been studied and presented in the 18th EWRS Symposium.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions; Weed management.
Ano: 2018 URL: http://orgprints.org/33480/1/EWRS2018_OralAbstract_Salonen%20et%20al.pdf
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Efektīvākās nezāļu ierobežošanas metodes – gudri plānota augu maiņa plus ecēšana pareizajā laikā Organic Eprints
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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Effect of crop rotation on soil nutrient balance and weediness in soddy podzolic organic farming fields Organic Eprints
Zarina, Livija; Zarina, Liga.
The nutrient balance in different crop rotations under organic cropping system has been investigated in Latvia at the Institute of Agricultural Resources and Economics since 2006. Latvia is located in a humid and moderate climatic region where the rainfall exceeds evaporation (soil moisture coefficient > 1) and the soil moisture regime is characteristic with percolation. The average annual precipitation is 670-850 mm. The average temperature varies from -6.7 ◦ C in January to 16.5 ◦ C in July. The growing season is 175 - 185 days. The most widespread are podzolic soils and mainly they are present in agricultural fields in all regions of Latvia. In a wider sense the goal of the soil management in organic farming is a creation of the biologically active...
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2017 URL: http://orgprints.org/33076/1/EGU2017-13096-1.pdf
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Efficiency of different type of vermicompost in potato/DAŽĀDU VERMIKOMPOSTU VEIDU EFEKTIVITĀTE KARTUPEĻU STĀDĪJUMOS Organic Eprints
Zarina, Livija.
There were two types of vermicompost (VK1-green manure sward, VK2- sheep manure)compared in Latvia at State Priekuli Plant Breeding Institute compared in potato starting 2013.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality Composting and manuring Crop husbandry Soil Crop health; Quality; Protection.
Ano: 2015 URL: http://orgprints.org/23685/1/Latvia-Lidzsvarota-lauksaimnieciba2015.pdf
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Farmers deserve credit for contributing to the weed surveys Organic Eprints
Salonen, Jukka; Hofmeijer, Merel A.J.; Zarina, Livija; Krawczyk, Roman; Verwijst, Theo; Melander, Bo.
Weed surveys were carried out in the PRODIVA project during 2015-2016 with a smooth collaboration with farmers. More than 200 fields were surveyed in six countries around the Baltic Sea. In addition to the weed observations in spring cereal fields we collected information about the farming practices in organic cropping.
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2018 URL: http://orgprints.org/32534/1/PRODIVA_Poster_SMTP2018Helsinki_final.pdf
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Genotype and environment interaction on field pea cultivars in organic cropping system Organic Eprints
Zarina, Livija; Alekse, Ilona.
Like other grain legumes, also field pea globally is important sources of plant protein and their growing have also positive effect on soil fertility. But, there are some constraints in their production, such pests and diseases and unstable yield. A high biodiversity and the selection of appropriate cultivars are important factors for the stability of agricultural systems especially in organic farming. Corresponding genotype choice for pea growing in mixtures with cereals can be one of the possibilities which enhances stable yield through field environment changes based on species diversity.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions Breeding; Genetics and propagation.
Ano: 2017 URL: http://orgprints.org/31643/1/mikkeli_Abstract_NJF495_2017_Zarina_corrected_3jun.docx
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Geographical distribution of challenging weed species - Current knowledge in organic arable farming in the Baltic sea region Organic Eprints
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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Mixtures of varieties of spring cereals for weed suppression in organic crop production Organic Eprints
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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