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	Provedor de dados Colegio de Postgraduados (2) Autor Gardea Flores, Carlos Alberto (2) Palavra-chave Communication (2) Comunicación inalámbrica (2) Electronics (2) Electrónica (2) Greenhouse (2) Humedad (2) Humidity (2) Invernadero (2) Microcontrolador (2) Microcontroller (2) Telemetry (2) Telemetría (2) Temperatura (2) Temperature (2) Wireless (2) Mais... Ano 2010 (2) País Mexico (2) Idioma Espanhol (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 654 Primeira ... 2 3 4 5 6 7 8 9 10 ... Última Fractions of particulate organic matter in soils depending upon farmyard manure and mineral fertilization Organic Eprints Raupp, Dr Joachim; Oltmanns, Meike. In a long-term fertilization trial particulate organic matter (POM) was investigated after 20 years of farmyard manure vs. mineral fertilization at different levels with the method of Meijboom et al. (1995). The organic matter was separated with sodium polytungstate (Magid et al., 1996; Six et al., 1999) into a light (p <1.13 g cm-3), medium (1.13-1.37 g cm-3) and heavy (p >1.37 g cm-3) fraction. The organically fertilized plots had lower contents of the light fraction (0.73 - 0.78 g kg-1 dry matter on average of all fields) compared to the mineral treatment (0.95 g kg-1 TS). This gives a hint that organic residues are decomposed faster in the manure fertilized soil, according to the higher biological activity found earlier in this treatment. The... Tipo: Conference paper, poster, etc. Palavras-chave: Nutrient turnover; Soil biology; Composting and manuring. Ano: 2002 URL: http://orgprints.org/770/1/rai02po.pdf Modelling N2O emissions from organic fertilisers for LCA inventories Organic Eprints Meier, Matthias S.; Schader, Christian; Berner, Alfred; Gattinger, Andreas. Apart from mineral fertilisers, organic fertilisers act mainly via the soil C-N pool in order to provide available nitrogen to plants. This different mode of action is not reflected so far in the current IPCC N2O emission model. Here we propose a simple model to calculate N2O emissions from organic fertilisers and plant residues. It considers the long-term immobilisation of N within stable organic matter in the soil as well as the mineralisation of additional N from the soil pool. A first test with field data showed reliable simulations of measured N2O emissions. By comparing values generated by our model with values generated by the IPCC model we show that the IPCC model may overestimate emissions from organic fertilisers. Therefore, within LCA... Tipo: Conference paper, poster, etc. Palavras-chave: Composting and manuring; Air and water emissions. Ano: 2012 URL: http://orgprints.org/24707/1/Meier-etal-2012-LCAConference-Okt12.pdf Wirkung verschiedener Nutzungsintensitäten auf montane Goldhaferwiesen im Biolandbau Organic Eprints Angeringer, Wolfgang; Starz, Walter; Karrer, Gerhard. In 2012 about 25 % of permanent Austrian grasslands were managed organically. At the same time the farms enlarged their average field areas especially in Alpine regions. In order to investigate intensification limits of montane meadows, an on-farm field experiment at the Upper Styrian Pöls valley was established in 2008. The triannual case study consisted of a balanced incomplete block design with 30 sub-plots at two autochthonous meadows of the Trisetetum association. These examined six treatments with different cutting regimes (2, 3, 4 cuts per year) and either slurry or solid manure for organic fertilization. Three years of investigation describe changes in coverage of grassland species as well as yield quantity and quality. The results show changes in... Tipo: Conference paper, poster, etc. Palavras-chave: Pasture and forage crops; Composting and manuring. Ano: 2013 URL: http://orgprints.org/21433/1/21433_angeringer.pdf Finding new cover crops for Estonian conditions Organic Eprints Toom, Merili; Lauringson, Enn; Talgre, Liina; Tamm, Sirje; Narits, Lea. Cover crops are essential in fallow periods of cropping systems to protect the soil from erosion and loss of plant nutrients through leaching and runoff (especially in winter). Experiments with potential cover crop species were carried out to evaluate their suitability to the local climate. The biomass production of tested cover crops in the experiment that lasted for two years was different depending on the length of the growing seasons. Tipo: Conference paper, poster, etc. Palavras-chave: Composting and manuring. Ano: 2017 URL: http://orgprints.org/31257/3/Merili_Toom_NJF_Organic2017_final.docx Stepwise incorporation of white clover (Trifolium repens L.)as fertiliser increases nitrogen fixation and improves nitrogen retention when intercropped with leek (Allium porrum L.) Organic Eprints Xie, Yue; Sørensen, Jørn Nygaard; Petersen, Karen Koefoed; Kristensen, Hanne Lakkenborg. Background and aims We investigated whether the incorporation of intercropped white clover as a split-dose fertiliser improves N retention of the plant-soil system in leek production. Methods White clover and leek were grown in pots where clover was stepwise incorporated into soil as fertiliser. Half of the clover was incorporated before leek transplantation (LT), the other half was incorporated 26 (S1) or 41 (S2) days after LT, compared with full incorporation of all clover (F) before LT. 15N injection and leaching studies were performed to investigate interspecific competition and the effects of precipitation on soil N availability. Results Stepwise incorporations increased or had no effect on leek growth, despite competition for N between white... Tipo: Journal paper Palavras-chave: Soil quality; Crop combinations and interactions; Composting and manuring; Nutrient turnover; Soil tillage; Vegetables. Ano: 2018 URL: http://orgprints.org/34289/1/Xie%20et%20al%20Plant%20and%20Soil%202018.pdf Tecniche di gestione della fertilità del suolo in una coltura di pomodoro. Organic Eprints Donatiello, Dr. Sergio; Fagnano, Dr. Massimo. Due tipi di sovescio (favino puro e favino + avena) con due epoche di interramento (inizio aprile e fine aprile) in combinazione fattoriale, sono stati confrontati in una azienda sperimentale della Campania, per valutare gli effetti sulla produzione di pomodoro. Dai primi risultati, si può evidenziare come la fertilità residua del terreno, dovuta alla precessione di leguminose, è stata sufficiente a sostenere almeno in parte le produzioni di pomodoro (311 q ha-1). Gli apporti di N sono stati più alti nel caso del sovescio di favino puro e con l’interramento tardivo: 72 e 142 kg ha-1 di N per il favino e 45 e 80 kg ha-1 di N per il sovescio misto, rispettivamente nelle due epoche di interramento. Il rapporto C/N delle biomasse è stato più alto nel caso... Tipo: Thesis Palavras-chave: Composting and manuring. Ano: 2005 URL: http://orgprints.org/6023/1/donatiello.pdf Searching the critical soil organic carbon threshold for satisfactory tilth conditions – test of the Dexter clay:carbon hypothesis Organic Eprints Schjønning, P.; de Jonge, L.W.; Moldrup, P.; Christensen, B.T.; Olesen, J.E.. The concern for deteriorating soil structure at low soil organic matter (SOM) contents calls for better knowledge of SOM interaction with soil minerals as well as guidelines for soil conservation. We measured clay dispersibility in a field with a textural gradient. Our results support the concept of differentiating soil content of clay in a complexed and non-complexed part although our data did not point out an exact clay/OC ratio threshold. Our results also indicated that labile fractions of SOM may play an important role in soil physical behavior. We revisited literature data and found evidence that soil content of fines (<2 or <20 μm) is a major determinant of soil specific surface area (SA). We noted that soil SA coverage with SOM changed... Tipo: Conference paper, poster, etc. Palavras-chave: "Organics" in general; Production systems; Soil quality; Crop combinations and interactions; Farming Systems; Composting and manuring; Biodiversity and ecosystem services. Ano: 2010 URL: http://orgprints.org/18441/1/18441.pdf SUREVEG - recirkulering af planteaffald og samdyrkning af grønsager Organic Eprints Vesterholt, Lasse Lillevang. Core Organic Cofund projekt bevilget i 2018, der går ud på at udvikle nye økologiske dyrkningsystemer til produktion af grøntsager. Målet er at forbedre systemernes bæredygtighed og resiliens, recirkulering af næringsstoffer og jordens lagring af kulstof. Projektet blev præsenteret ved Åbent hus arrangement hos Klintholm (deponerings- og affaldsbehandlingsanlæg ejet af seks fynske kommuner) i samarbejde med Naturstyrelsen og Danmarks Naturfredningsforening, den 30. maj 2018. Tipo: Other Palavras-chave: Soil quality; Crop combinations and interactions; Composting and manuring; Nutrient turnover; Vegetables; Biodiversity and ecosystem services. Ano: 2018 URL: http://orgprints.org/34482/3/AU-3%20Poster%20Recirkulering%20af%20planteaffald%20og%20samdyrkning%20af%20gr%C3%B8ntsager%20maj%202018_34482.pdf Forsøk med fermentering av husdyrgjødsel Organic Eprints Cabell, Joshua; Løes, Anne-Kristin. Prosjektet “Forsøk med fermentering av husdyrgjødsel» (2016-2018) prøver ut tilsetning av effektive mikroorganismer (EM) i dyrerom og gjødsellagre på noen gårder i Norge. Et kontrollert forsøk ble gjennomført på Tingvoll vinteren 2017-18. Uttrykket «effektive mikroorganismer» ble først brukt i Japan, der forskere isolerte og dyrket opp stammer av ulike jordboende sopp og bakterier, og prøvde dem ut i ulike kombinasjoner som tilsetning til dyrka jord. Ideen var å utkonkurrere den stedlige mikrofloraen og få sunnere planter og bedre avlinger. Metoden har fått vid anvendelse i Asia, og knyttes ofte til begrepet «nature farming» eller «Kyusei nature farming». Også i Europa er det nå mange produkter på markedet som inneholder EM. Det selges midler for å... Tipo: Report Palavras-chave: Composting and manuring; Farm nutrient management. Ano: 2018 URL: http://orgprints.org/34268/1/NORS%C3%98K%20Rapport%208%202018%20Fermentering%20av%20husdyrgj%C3%B8dsel.pdf Kompost til økologiske væksthuse Organic Eprints Dresbøll, Dorte Bodin. Ved produktion af væksthuskulturer er der behov for tilførsel af meget store mængder næring. Da plantenæringsstoffer samtidig er en begrænset ressource i økologisk planteproduktion, kan det være vanskeligt at skaffe tilstrækkelig næring fra økologiske husdyrbrug, hvor gødningen til økologiske væksthuse hovedsagligt kommer fra. I ORCTOM-projektet er næringsmæssig kvalitet og struktur af kompost baseret på lettilgængelige planterester derfor blevet undersøgt. Tipo: Newspaper or magazine article Palavras-chave: Greenhouses and coverings; Composting and manuring. Ano: 2003 URL: http://orgprints.org/4650/1/4650.pdf Long term effect of organic sources of nutrients on productivity and soil health in maize+soybean—wheat+gram cropping system Organic Eprints Jiwan Prakash Saini, J.P. Saini; Rameshwar Kumar, Rameshwar. Organic farming has emerged as an important priority area globally in view of growing demand for safe and healthy food which provides health and environmental benefits. The long term sustainability and concerns on environmental pollution associated with indiscriminate use of agrochemicals calls for use of organic farming practices in agriculture for maintaining soil health and crop productivity. Over the past few decades, increasing attention has been given to intercropping particularly in organic agricultural systems and the evidence suggests that this can provide production advantages over sole crops in the absence of increased external inputs due to more efficient utilization of resources. Component crops in intercropping may differ in their use of... Tipo: Conference paper, poster, etc. Palavras-chave: Composting and manuring. Ano: 2014 URL: http://orgprints.org/23210/1/23210%20Paper%20FINAL%20ISOFAR-Feb.2014%20Istanbul_MM.pdf Fertilisation de la courge de plein champ : test de différentes doses et de 2 types d'engrais - rapport final 2005 Organic Eprints Védie, Hélène. La fertilisation en maraîchage biologique est sans aucun doute encore un vaste domaine à explorer. Le manque de références sur les besoins des cultures d’une part, et sur les possibilités de fournitures du sol par minéralisation d’autre part, amène bien souvent les producteurs à « naviguer à vue » en utilisant des doses standards, qui ne reposent pas sur des bases agronomiques éprouvées. Les suivis réalisés par le GRAB sur aubergine en 2003 et melon en 2004 montrent qu’il est possible de diminuer les doses d’engrais azotés, sans perte de rendement. La marge de manœuvre est très importante en bio, où les fournitures par le sol sont sans doute largement sous-estimées. Des essais de fertilisation en maraîchage biologique sont donc encore nécessaires afin de... Tipo: Report Palavras-chave: Nutrient turnover; Composting and manuring. Ano: 2006 URL: http://orgprints.org/8721/1/fertilisation_courge.pdf Entwicklung einer praxisanwendbaren Methode der Humusbilanzierung im ökologischen Landbau (Verbundvorhaben) Organic Eprints Die Humusversorgung acker- und gemüsebaulich genutzter Böden nimmt im ökologischen Landbau eine zentrale Stellung ein. Über die Fruchtfolge und den Stickstoffkreislauf sollte in Betrieben eine optimale Humusreproduktion gewährleistet werden, da ein Absinken der Humusgehalte unterhalb tolerierbarer Werte langfristig eine Abnahme der Bodenfruchtbarkeit und der Ertragspotentiale mit sich bringt. Aus verschiedenen Gründen ist es bisher sehr schwierig, den Humusstatus ackerbaulich genutzter Böden einzuschätzen oder Schlussfolgerungen zur Optimierung des betrieblichen Humusmanagements zu ziehen. Die bisher vorliegenden Instrumente zur Analyse der Humusversorgung (Messverfahren, Bilanzmethoden, Simulationsmodelle) wurden fast ausschließlich für die Bedingungen... Tipo: Project description Palavras-chave: Nutrient turnover; Composting and manuring; Soil tillage. Ano: 2023 Décomposition anaérobie – peut-elle protéger le climat? Organic Eprints Hämmerli, Franziska. Un agriculteur fait de bonnes expériences avec un processus de décomposition sensé séquestrer beaucoup de carbone dans le sol. Les chercheurs sont sceptiques. Tipo: Newspaper or magazine article Palavras-chave: Composting and manuring; Air and water emissions; Soil. Ano: 2018 URL: http://orgprints.org/32744/1/Bioactualites-05-2018-haemmerli.pdf Biogas production from clover-grass Organic Eprints Nielsen, Henrik Bangsø; Schmidt, Jens Ejbye. Biogas production from clover-grass Tipo: Conference paper, poster, etc. Palavras-chave: Composting and manuring. Ano: 2010 URL: http://orgprints.org/19030/4/19030_paper.pdf Leguminosenkörnerschrote und andere vegetabile Dünger im Ökologischen Gemüsebau Organic Eprints Müller, Torsten; Riehle, Judith; Schlegel, Isabel; Li, Zhifang; von Schenck zu Schweinsberg - Mickan, Mario; Sabahi, Hossein; Schulz, Rudolf. The potential of different plant based organic fertilisers (PBOF) to substitute animal based organic fertilisers (ABOF) in organic vegetable production were investigated in incubation, pot and field experiments. PBOFs have the potential to replace ABOFs. Particularly legume seed meals show fast net N-release even at low soil temperatures. Considerable differences in nitrate contents of vegetables can be found between the different fertilisers although fresh matter and N yields are nearly identical. Tipo: Conference paper, poster, etc. Palavras-chave: Nutrient turnover; Vegetables; Composting and manuring. Ano: 2007 URL: http://orgprints.org/9607/1/9607_M%C3%BCller_Vortrag.pdf The effect of municipal waste composts on grass nutrient yields Organic Eprints Tontti, Tiina; Lehtonen, Keijo. Field experiments with grass mixtures (Phleum pratense, Festuca pratensis) were established with a cereal cover crop (Hordeum vulgare) and fertilized with municipal waste composts on medium fine sand in Mikkeli in 2000. Tipo: Conference paper, poster, etc. Palavras-chave: Composting and manuring. Ano: 2003 URL: http://orgprints.org/4123/1/4123.pdf Kvælstofoptagelse i afgrøde og ukrudt ved placeret handels- og husdyrgødning Organic Eprints Petersen, Jens. Ved tilførsel af kvælstof i såvel husdyrgødning som handelsgødning bliver kun omkring 60% af det mineralske kvælstof optaget i afgrøden i den første vækstsæson, mens den resterende del fastlægges i jorden (immobiliseres). I forhold til indarbejdning af gødningen i jorden giver direkte nedfældning i koncentrerede strenge minimal kontakt med jorden, hvorved en større del af det tilførte kvælstof forbliver plantetilgængeligt, men hvilken betydning har gødningsstrengens placering for afgrødens optagelse af det tilførte kvælstof? Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions; Weed management; Composting and manuring. Ano: 2005 URL: http://orgprints.org/4651/1/Plantekongres_2005.pdf Engrais verts en interculture d’automne-hiver en plein champ - rapport final 2005 Organic Eprints Védie, Hélène; Taulet, Annick. La lutte contre les adventices et l’amélioration de la fertilité sont deux priorités en agriculture biologique : la culture d’engrais verts est une méthode permettant de concilier ces 2 objectifs. Les engrais verts permettent notamment d’introduire une biodiversité « interculturale » dans les rotations, de maintenir ou d’améliorer les qualités agronomiques et structurales des sols et de réduire l’enherbement. Les essais conduits par le GRAB en 2003 et 2004 ont permis de sélectionner plusieurs types d’engrais verts qui sont particulièrement performants sur ce créneau : les crucifères (moutarde, navette) et certains mélanges graminées et légumineuses. Ces engrais verts permettent de bien limiter le développement des adventices, une production de biomasse... Tipo: Report Palavras-chave: Nutrient turnover; Soil quality; Composting and manuring. Ano: 2006 URL: http://orgprints.org/8720/1/engrais_verts.pdf 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 Registros recuperados: 654 Primeira ... 2 3 4 5 6 7 8 9 10 ... Última

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