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Registros recuperados: 28
Primeira ... 12 ... Última
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Barley undersown with red clover in organic and conventional systems: nitrogen aftereffect on legume growth Organic Eprints
Alaru, Marika; Talgre, Liina; Luik, Anne; Tein, Berit; Eremeev, Viacheslav; Loit, Evelin.
Nitrogen (N) deficiency is a major problem in organic and low-input farming systems. Growing spring cereals with undersown legumes has a positive effect on soil fertility, enriching it with nitrogen, through symbiosis of legumes with nodule bacteria. Two hypotheses were tested: 1) undersowing of red clover increases the protein content of barley grains and 2) mineral N has negative aftereffect on growth of legume plants. The aim of this study was to investigate the effect of organic (cattle manure, off-season cover crop) and mineral N in organic and conventional farming systems on (i) barley (Hordeum vulgare L.) grain yield and quality, (ii) biomass yield formation of undersown red clover (Trifolium pratense L.) and (iii) the aftereffect of mineral...
Tipo: Journal paper Palavras-chave: Soil quality; Farming Systems; Nutrient turnover; Crop husbandry; Soil tillage; Soil.
Ano: 2017 URL: http://orgprints.org/32508/1/Alaru%20et%20al%202017.pdf
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Crop yields and supply of nitrogen compared in conventional and organic farming systems Organic Eprints
Alaru, Maarika; Talgre, Liina; Eremeev, Viacheslav; Tein, Berit; Luik, Anne; Nemvalts, Anu; Loit, Evelin.
The aim of organic agriculture is to produce food of high nutritional quality in sufficient quantity. Field experiments were conducted to evaluate the effect of organic and conventional growing systems on (i) total amounts and sup-ply of N taken up or applied to plants during a five year crop cycle period and (ii) crops total dry matter (DM) yield obtained during same period. The total DM yields from the organic treatments were 25–33% smaller than from the conventional treatments. The ratio of N output/N input was significantly the smallest in the organic treatment with cattle manure, where only 37% of all supplied N was used by plants during the crop cycle period. The organic fertiliser with faster mineralisation rate and splitting the application of...
Tipo: Journal paper Palavras-chave: Soil quality; Soil tillage; Air and water emissions.
Ano: 2014 URL: http://orgprints.org/31287/1/alaru-etal-2014-Agri_FoodSci-Vol23-issue4-p317-326.pdf
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Cultivation technology influences the occurrence of potato early blight (Alternaria solani) in an organic farming system Organic Eprints
Runno-Paurson, Eve; Hansen, Merili; Tein, Berit; Loit, Kaire; Jõgi, Kätlin; Luik, Anne; Metspalu, Luule; Eremeev, Viacheslav; Williams, Ingrid; Mänd, Marika.
Nowadays, organically produced products have become more popular than ever and interest in them is still growing fast. The early blight causal pathogen Alternaria solani has not been considered a great threat to potato in northern climate conditions in the past and has not been routinely sprayed against. During our study early blight was evaluated in 2010 and 2011 on the plants of a potato cultivar ‘Reet’ in an organic farming experiment. In our study, both growing seasons were very favourable for early blight development. Significant differences between the two cultivation technologies were found (F1,12 = 4.84, p = 0.048). In 2010, the area under disease progress curve (AUDPC) value was 303 on cover crop (CC) plots and 990 on CC + M (manure)...
Tipo: Journal paper Palavras-chave: Production systems Crop health; Quality; Protection Root crops.
Ano: 2014
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Effect of conventional and organic cropping systems on SOC dynamics Organic Eprints
Tein, Berit; Kauer, Karin; Eremeev, Viacheslav; Luik, Anne; Loit, Evelin.
Soil organic carbon (SOC) concentration is an indicator for assessing soil quality. SOC concentration can be increased by using appropriate crop and soil management which can increase organic matter input into soil and decrease its mineralization rate (Follett, 2001). The aim of this study was to investigate SOC content and dynamics in four inorganic and two organic cropping systems in five crop rotation. Data presented in this paper covers the first rotation from years 2008 to 2012.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality; Soil.
Ano: 2013 URL: http://orgprints.org/26804/7/Tein%20et%20al%20%20Iceland_poster.pdf
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Effect of different production systems on yield and quality of potato Organic Eprints
Eremeev, Viacheslav; Keres, Indrek; Tein, Berit; Lääniste, Peeter; Selge, Are; Luik, Anne.
Effects of different agricultural practises (organic, conventional) on yield and quality of potato were compared.
Tipo: Journal paper Palavras-chave: Crop health; Quality; Protection.
Ano: 2009
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Effect of green manures on weeds, crop yields and soil properties in Estonia Organic Eprints
Tein, Berit; Eremeev, Viacheslav; Reintam, Endla; Talgre, Liina; Sanchez de Cima, Diego; Luik, Anne.
The aim of this research was to investigate the effect of different green manures and their combination with cattle manure on weeds, crop yields and soil properties in five-field crop rotation experiment of three different organic cropping systems.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality; Composting and manuring; Crop husbandry; Soil; Weed management.
Ano: 2013 URL: http://orgprints.org/26841/1/EULS_2013_Birmingham_poster.pdf
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Farming systems affect potato (Solanum tuberosum L.) tuber and soil quality Organic Eprints
Tein, Berit; Kauer, Karin; Eremeev, Viacheslav; Luik, Anne; Selge, Are; Loit, Evelin.
The aim of this study was to investigate how different farming systems influenced tuber yields and quality (N, NO3−, P, K, Ca, Mg, dry matter and starch concentrations) of potato as well as how potato cultivation within a crop rotation under different farming systems affects soil quality (pH, Ntot, Corg, plant available P, K, Ca and Mg concentrations). Potato (Solanum tuberosum L.) was part of a five crop rotation experiment in which red clover (Trifolium pratense L.), winter wheat (Triticum aestivum L.), peas (Pisum sativum L.), potato and barley (Hordeum vulgare L.) followed each other simultaneously on a same field. Data presented in this paper concerned the first 3 years of the rotation during 2009–2011. The experiment was performed with six different...
Tipo: Journal paper Palavras-chave: Production systems; Root crops.
Ano: 2014
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Green manures as winter cover crops enhance soil improvement and weed regulation in crop rotation Organic Eprints
Talgre, Liina; Eremeev, Viacheslav; Sanchez de Cima, Diego; Tein, Berit; Reintam, Endla; Matt, Darja; Luik, Anne.
The aim of this research was to explain the effect of different green manures as winter cover crops and their combination with cattle manure on soil properties, weeds and crop yields in five-field crop rotation experiment of three different organic cropping systems.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality; Soil biology; Composting and manuring; Crop husbandry; Soil; Weed management.
Ano: 2014 URL: http://orgprints.org/26840/1/EULS_2014_Lyon_poster.pdf
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Herne saak ja kvaliteet maheviljeluses olenevalt orgaanilise väetamise viisist Organic Eprints
Kuht, Jaan; Eremeev, Viacheslav; Talgre, Liina; Tein, Berit; Alaru, Maarika; Luik, Anne.
Maheviljeluses kasutatakse mitmeaastast külvikorda, mis säilitab ja suurendab mulla viljakust ja bioloogilist aktiivsust ning kus kasvatatakse liblikõielisi ja haljasväetistaimi või kasutatakse väetamisel komposteeritud sõnnikut (Mahepõllumajanduse seadus, 2007; Palts ja Vetemaa, 2012). Seega on õhulämmastikku siduvaid ja mügarbaktereid moodustavate liblikõieliste taimede kasvatamine maheviljeluse üheks põhitingimuseks. Liblikõielised taimede kasvatamine soodustab ka teiste toiteelementide (P, K, mikroelemendid) omastamist mullast või orgaanilisest materjalist. Hernes, kui mahekülvikorda hästi sobiv kultuur on vähenõudlik ja kasvutingimuste suhtes leplik taim, mis kasvab hästi keskmistel liivsavi- ja saviliivmuldadel. Ka ei vaja ta teraks kasvatamisel...
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Composting and manuring Crop husbandry Crop health; Quality; Protection.
Ano: 2014 URL: http://orgprints.org/27688/1/kuht.pdf
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IMPROVING NITROGEN MANAGEMENT IN REDUCED TILLAGE SYSTEMS BY USE OF GREEN MANURES AND APPROPRIATE OFF-FARM INPUTS: REUSLTS OF TILMAN-ORG. TILMAN-ORG SESSION. Organic Eprints
Rietberg, P.I.; Burgt, G.J.H.M.; Tein, Berit; Luik, Anne; Sans, F. Xavier.
Abstract The TILMAN-project aims to develop robust and sustainable arable crop production systems via the introduction of reduced tillage techniques combined with a strategic use of green manures in organic crop rotations, while maintaining and improving soil quality and crop productivity parameters. The adoption of reduced tillage and/or green manures strongly affects nitrogen quantity and availability during the vegetative period and throughout the crop rotation. Specifically, changing soil and water conditions may affect the availability pattern of nitrogen, notably in spring. We present aggregated data of several long- and medium-term European experimental field studies in which green manures including cut-and-carry-fertilizers, and reduced tillage...
Tipo: Conference paper, poster, etc. Palavras-chave: Soil; Environmental aspects; Farm nutrient management.
Ano: 2014 URL: http://orgprints.org/23985/1/23985%20WP5%20ISOFAR%20in%20format_MM.pdf
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In crop rotation green manures as winter cover crops enhance ecosystem services of farming Organic Eprints
Talgre, Liina; Tein, Berit; Eremeev, Viacheslav; Matt, Darja; Reintam, Endla; Sanches De Cima, Diego; Luik, Anne.
Organic farming systems should be characterized by excellent soil fertility management to keep plant nutrient cycles short and as closed as possible. Therefore, it is extremely important to establish growing systems that have rotations with appropriate crops and intercrops to ensure fertile and biologically active soils, to enhance biodiversity and to provide high quality crop yields. Locally available organic fertilizers include green manures and animal manure. The influence of green manures as intercrops and these combined with composted cattle manure on soil properties, biodiversity indicators and crop yields was studied in a crop rotation experiment in three organic systems at the Estonian University of Life Sciences.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions; Composting and manuring; Farm nutrient management.
Ano: 2013 URL: http://orgprints.org/24546/1/talgre%20et%20al%202013%20njf.pdf
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Kartul mahe- ja tavaviljeluse süsteemide võrdluskatses aastatel 2008-2012 Organic Eprints
Eremeev, Viacheslav; Tein, Berit; Luik, Anne.
Kartul on üheks armastatumaiks kultuuriks nii meil kui maalimas. Kartulit on läbi aegade peetud teiseks „leivaks“ ning tänapäeval ei kujutaks meist keegi ette oma toidulauda, kui sealt puuduks toidukartul. Maheviljelus on Eestis aasta-aastalt laienenud on mahekartulikasvatuse pindala siiski iga aastaga vähenenud. Uurimistöö eesmärk oli uurida kuidas erinevad viljelusviisid mõjutavad mugulate saagistruktuuri elemente ning kui suurt mõju avaldab see saagi kvaliteedile.
Tipo: Conference paper, poster, etc. Palavras-chave: Production systems Crop health; Quality; Protection Root crops.
Ano: 2012 URL: http://orgprints.org/22064/1/eremeev_et_al_2.pdf
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Kartul maheviljelussüsteemide võrdluskatses aastatel 2012-2013 Organic Eprints
Eremeev, Viacheslav; Kuht, Jaan; Tein, Berit; Talgre, Liina; Alaru, Maarika; Põldma, Alo; Luik, Anne.
Kartul on üheks armastatumaiks kultuuriks nii meil kui maailmas. Teda on läbi aegade peetud teiseks "leivaks" ning tänapäeval ei kujutaks meist keegi ette oma toidulauda, kust puuduks kartul (Eremeev jt., 2012). Hea eelkultuurina teraviljadele sobib ta hästi ka päikesepinnalistesse külvikordadesse. Kartulit saab edukalt kasvatada maheviljeluslikus suletud tsükliga tootmisüksustes, kus on võimalik kasutada loomapidamisest tekkivad sõnnikut (Järvan ja Edesi, 2012). Maheviljeluslikus külvikorras on oluline osa vahekultuuride kasvatamisel. Põhikultuuride kasvatamise vahepealsel ajal vahekultuurid kaitsevad ja rikastavad mulda toitainetega ning suruvad alla umbrohtumust. Vahekultuure ei kasvatata müügikasu eesmärgil, vaid sissekündmisel muutub see...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop husbandry Crop health; Quality; Protection.
Ano: 2014 URL: http://orgprints.org/27687/1/eremeev_1.pdf
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Kartuli kasvatamise mõju mulla mikrobioloogilisele aktiivsusele ja orgaanilise süsiniku ning lämmastiku sisaldusele erinevates viljelusviisides Organic Eprints
Eremeev, Viacheslav; Kuht, Jaan; Tein, Berit; Talgre, Liina; Alaru, Maarika; Runno-Paurson, Eve; Mäorg, Erkki; Loit, Evelin; Luik, Anne.
Viie katseaasta (2012–2016) keskmised tulemused näitavad, et võrreldes tavasüsteemidega on maheviljelussüsteemidel eelised kestlikuks taimekasvatuseks. Viljelussüsteemi mitmekesistamine vahekultuuride ja lisaks veel kompostitud veisesõnnikuga, võimaldab oluliselt parandada mulla omadusi. Tõusis mulla mikroobide aktiivsus, mulla orgaanilise süsiniku ja üldlämmastiku sisaldus. Mulla mikroobide aktiivsuse ja üldlämmastiku sisalduse vahelised seosed aga vajavad jätkuvaid uuringuid.
Tipo: Journal paper Palavras-chave: Soil biology; Crop husbandry.
Ano: 2019 URL: http://orgprints.org/35152/1/Eremeev%20et%20al_Agronoomia2019.pdf
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Kartuli kasvatamise mõju mulla toitainete sisaldusele maheviljelussüsteemide võrdluskatses Organic Eprints
Eremeev, Viacheslav; Kuht, Jaan; Tein, Berit; Talgre, Liina; Alaru, Maarika; Loit, Evelin; Luik, Anne.
Kartul on üheks armastatumaiks kultuuriks nii meil kui maailmas. Teda on läbi aegade peetud teiseks "leivaks" ning tänapäeval ei kujutaks meist keegi ette toidulauda, kust puuduks kartul (Eremeev jt., 2012). Mahepõllumajanduslikult kasvatatav kartulipind on Eestis pidevalt suurenenud. Samas ei ole seni veel piisavalt andmeid selle kohta, kas põhiliselt vaid mulla toitainevarudel ja haljasväetistaimedel baseeruv majandamine on piisavalt jätkusuutlik. Kas ilma sõnnikuta külvikordades – paljudes mahetaludes ju loomakasvatus puudub – võib toimuda mulla väljakurnamine (Järvan jt., 2014)? Käesoleva töö eesmärgiks oli uurida kuidas erinevate maheviljelusviisidega kartuli kasvatamine mõjutab mulla toitainete sisaldust.
Tipo: Conference paper, poster, etc. Palavras-chave: Farming Systems; Crop husbandry; Soil.
Ano: 2017 URL: http://orgprints.org/32514/1/Eremeev%20et%20al%202017.pdf
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Kasvatustehnoloogia mõjutab kartuli kuivlaiksuse esinemist Organic Eprints
Runno-Paurson, Eve; Tein, Berit; Luik, Anne.
Kartuli kuivlaiksust (Alternaria solani, A. alternata) on seni Eestis peetud suurt kahju põhjustavaks kartulihaiguseks. Viimastel aastatel on kuivlaiksus osutunud suureks probleemiks Eesti kartulipõldudel, seda eriti just vastuvõtlikel sortidel. Kuumadel keskmise niiskusega kasvuaastatel on kuivlaiksusele vastuvõtlikel sortidel vaja tavaviljeluses teostada keemilist tõrjet, kuna haigus hävitab enneaegselt kartuli lehestiku, sageli enne veel kui lehemädanik lööbida jõuab. Kuivõrd maheviljelus välistab keemilise tõrje, siis tuleb leida kasvatustehnoloogilisi võtteid ning kasutada võimalikult haigusekindlaid sorte. Uurimustöö eesmärgiks oli selgitada, kuidas erinevad maheviljeluse tehnoloogiad mõjutavad kartuli kuivlaiksuse arengut haigusele soodsal...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection.
Ano: 2012 URL: http://orgprints.org/26796/1/paurson_et_al_2012.pdf
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Mulla umbrohuseemnete varu mahepõllul Organic Eprints
Kuht, Jaan; Luik, Anne; Eremeev, Viacheslav; Talgre, Liina; Tein, Berit.
Üleminek mahepõllupidamisele tekitab mitmeid probleeme. Et keemilisi taimekaitsevahendeid ei või kasutada, on üheks nendest võitlus umbrohtudega. Valdav osa umbrohtudest hakkab kasvama aja jooksul harimisega mulda viidud ja seal aastaid idanemisvõimelisena püsinud seemnetest. Umbrohuseemnevaru koosneb paljudest erinevatest liikidest, millest mõned domineerivad liigid moodustavad 70‒90% kogu seemnevarust, olles enamasti ka põhiprobleemiks (Wilson, 1988). Seemnevaru hulk võib varieeruda suurtes piirides olenevalt mulla tüübist, kasvatatud kultuuridest, harimisvõtetest, külvi ajast ja herbitsiidide kasutamisest. (Grundy, Jones, 2002). Üheks mulla umbrohuseemnete varu suurenemise allikaks võivad olla ka orgaanilise väetisega koos mulda viidud umbrohuseemned...
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2012 URL: http://orgprints.org/22462/1/kuht_et_al.pdf
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Soil carbon dynamics estimation and dependence on farming system in a temperate climate Organic Eprints
Kauer, Karin; Tein, Berit; Sanches De Cima, Diego; Talgre, Liina; Eremeev, Viacheslav; Loit, Evelin; Luik, Anne.
Maintaining or enhancing the stock of soil organic carbon (SOC) is a key factor in sustaining the soil resources of the world. The objective of this research was to study the effect of different farming systems (conventional farming with mineral fertilizers and crop specific fertilization vs. organic farming with organic fertilizers (catch crops and composted manure)) under the same 5-crop rotation (red clover, winter wheat, pea, potato, barley undersown with red clover) system on the SOC stock and the stability of SOC. The second aim was to quantify plant C inputs to the soil and to identify the relationship between C sequestration rate and C input. Data presented in this paper concerned the first rotation during 2008–2012. The main factors were farming...
Tipo: Journal paper Palavras-chave: Soil quality; Crop husbandry; Soil.
Ano: 2015 URL: http://orgprints.org/29151/1/kauer%20et%20al%202015.pdf
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Soil Nutrient Evolution during the First Rotation in Organic and Conventional Farming Systems Organic Eprints
Sanchez de Cima, Diego; Reintam, Endla; Tein, Berit; Eremeev, Viacheslav; Luik, Anne.
Since 2008, a 5-year crop rotation experiment (winter wheat, pea, potato, barley undersown with red clover, and red clover) has been run in Tartu, Estonia, to evaluate the changes in soil chemical parameters under four fertilizer managements: (1) unfertilized conventional plots (conventional I), (2) conventional plots with addition of mineral fertilizers (conventional II), (3) organic plots with cover crops during the winter period (organic I), and (4) organic plots with the same cover crops plus a yearly amendment of 40 t ha–1 of cattle manure (organic II). After the first rotation, results showed significant differences (P < 0.05) in soil acidity dependent on the system with mean values ranging between 5.67 (conventional II) and 6.10 (organic II). In...
Tipo: Journal paper Palavras-chave: Composting and manuring; Nutrient turnover; Crop husbandry; Soil.
Ano: 2015 URL: http://orgprints.org/29490/1/S%C3%A0nchez%20de%20Cima%20et%20al%202015.pdf
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Talvine vahekultuur mõjutab kartulimugulate hõbekärnaga nakatumist Organic Eprints
Tein, Berit; Eremeev, Viacheslav; Loit, Evelin; Luik, Anne.
Kartuli (Solanum tuberosum L.) hõbekärn (Helminthosporium solani Durieu, Mont) on seenhaigus, mis viimastel aastatel on osutunud tootmises äärmiselt problemaatiliseks. Haigustekitaja nakatab valmivaid mugulaid juba mullas, kuid eoste kaudu levib haigus hoidlas jõudsalt edasi, mistõttu peetakse hõbekärna ka säilitushaiguseks. Patogeen tungib mugulasse läbi loomulike avade siis, kui mugulad on saavutanud juba oma suuruse ja massi, kuid toimub veel koore kinnistumine. Seetõttu on vajalik mugulad põllult võimalikult ruttu koristada. Hõbekärna nakatunud mugulate koore pinnale tekivad pruunikashallid laigud. Kui mugulad puutuvad kokku veega ilmneb nakatunud kohal iseloomulik hõbe-metalne läige. Eriti hästi ongi haigust näha just pestud mugulate pinnalt....
Tipo: Conference paper, poster, etc. Palavras-chave: Composting and manuring Crop husbandry Crop health; Quality; Protection.
Ano: 2014 URL: http://orgprints.org/27693/1/tein%20et%20al.pdf
Registros recuperados: 28
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