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| Registros recuperados: 641 | |
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| Lynch, D.H.; Halberg, N.; Bhatta, G.D.. |
| Can organic agriculture elaborate a scientifically based, resource-efficien and agroecological approach to low-input farm management? This review examines the literature from temperate regions, with a particular emphasison Canadian and USstudies that relate to environmental and ecological impacts of organic agriculture with respect to (i )soil organic matter storage, (ii) soil quality/soil health, (iii) nutrient loading and risks of off-farm nutrient and agrochemical losses, (iv) biodiversity and (v) energy use and global warming potential. The context and implications of semi-arid conditions and low soil P levels, common to many organic farms in North America, and wide spread adoption of genetically engineered crops in conventional production, is also... |
| Tipo: Journal paper |
Palavras-chave: Social aspects; Farm nutrient management. |
| Ano: 2012 |
URL: http://orgprints.org/20725/4/20725.pdf |
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| Duarte, Edivânia Maria Gourete. |
| Os sistemas agro florestais são efetivos em melhorar e conservar a qualidade do solo. As árvores presentes nestes sistemas absorvem nutrientes de camadas profundas do solo e aportam continuamente material orgânico, gerando impactos à superfície e abaixo da superfície do solo. O objetivo deste trabalho foi estudar características envolvidas na cidagem de nutrientes de espécies arbóreas, visando contribuir para a formulação de estratégias de manejo de sistems agroflorestais. As espécies selecionadas para o estudo foram o ipê-preto (Zeyheria tuberculosa), o açoita-cavalo (Luehea grandiflora), o mulungu (Erythrina verna), o fedegoso (Senna macranthera), o ingá (Ingá subnuda), o papagaio (Aegiphila sellowiana) e o abacate (Persea americana). A produção de... |
| Tipo: Thesis |
Palavras-chave: Farm economics; Nutrient turnover; Social aspects; Soil tillage; Farm nutrient management. |
| Ano: 2007 |
URL: http://orgprints.org/21742/1/Duarte_Ciclagem.pdf |
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| Negativa K-balanser har rapporterats från vallintensiva ekologiska odlingssystem både i Sverige och andra europeiska länder. De rapporterade negativa kaliumbalanserna är oftast beräknade för hela växtföljden. Om en kaliumbalans för de enskilda grödorna beräknas så ser man att för vissa grödor som t.ex. spannmål är kaliumtillförsel och bortförsel i balans eller så finns ett överskott av kalium. Vallgrödorna däremot har ofta ett stort kaliumunderskott. I ekologiska odlingssystem är en kontinuerlig leverans av K genom mineralvittring av stor betydelse för en bevarad långsiktig produktionsförmåga. Detta studerar vi inom det Formas-finansierade projektet "Kvantifiering av mineralvittringens bidrag till grödornas kaliumförsörjning på olika typer av... |
| Tipo: Project description |
Palavras-chave: Pasture and forage crops; Farm nutrient management. |
| Ano: 2024 |
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| Padel, Susanne. |
| This is the final report for Defra Project OF0159. The Organic Conversion Planner (OrgPlan) is a computer program for farmers and advisors reducing the time input necessary for planning a conversion to organic farming. Conversion planning can help to identify whether organic management is suited to the farm and potential problems during the conversion period itself. This involves an assessment of the current situation of the farm, based on which proposals for an organic 'target (endpoint)' can be developed. This includes proposed rotation(s), cropping and stocking plan for the specific farm situation and the proposals need to be tested for their technical and financial feasibility, including impact on forage supply, nutrient requirements and financial... |
| Tipo: Report |
Palavras-chave: Nutrient turnover; Crop combinations and interactions; Farm nutrient management; Technology transfer; Animal husbandry; Farm economics. |
| Ano: 2001 |
URL: http://orgprints.org/7980/1/OF0159_2147_FRP.pdf |
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| Bus, Michiel; Hospers-Brands, A.J.T.M.. |
| Planty Organic is a study into a new and innovative agricultural system in general and the nitrogen cycle in particular. The study started in 2012 and is carried out at the Kollummerwaard model farm in Munnukezijl (on the boundary of Groningen/Friesland). More information about this interesting study can be found at the website www.biowad.nl. In this Newsletter: Looking back on the 2013-2014 season Status of the trial field Danes visit our trial field Wageningen University students write thesis Article in Akker |
| Tipo: Other |
Palavras-chave: Farming Systems; Nutrient turnover; Farm nutrient management. |
| Ano: 2014 |
URL: http://orgprints.org/28296/1/2970.pdf |
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| Timmermans, Bart G.H.; Burgt, Geert-Jan H.M.; Staps, J.J.M.; Berg, Coen. |
| In het kader van het project Minder en Anders Bemesten is op het bedrijf van Jan en Hans van Lierop vervolgonderzoek uitgevoerd. In een veldexperiment in herhalingen is getracht de productie van courgette gelijkmatiger in het seizoen te verdelen door op twee peilers te steunen: een bescheiden bemesting om de productie in het begin van het seizoen te verhogen, en grasklaver als voorvrucht om de productie verderop in het seizoen te verhogen. De resultaten tonen dat deze aanpak werkt: met een relatief kleine bemesting is er geen sprake van een verlaagde opbrengst in de eerste helft van de productieperiode. Verder is de bodemstructuur verbeterd door de grasklaver en is de mestgift lager dan anders het geval zou zijn geweest. |
| Tipo: Report |
Palavras-chave: Composting and manuring; Farm nutrient management. |
| Ano: 2010 |
URL: http://orgprints.org/19210/1/2477.pdf |
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| Weller, R. |
| The main objective of the 4-year project was to provide both qualitative and quantitative information on the development of two contrasting organic dairy systems, including the benefits and limitations of each system and also the opportunities for improving the systems. The first system (SS system) was based on an extensive and sustainable system, with the objective of achieving a high level of self sufficiency and sustainability by minimising the importation of nutrients into the system. Therefore, the cropping rotation for the system included forage crops for grazing and conservation and also cereal crops to provide both grain (for feeding as a concentrate) and straw for bedding. The main objective of the second system (PC system) was to change from a... |
| Tipo: Report |
Palavras-chave: Pasture and forage crops; Dairy cattle; Farm nutrient management. |
| Ano: 2006 |
URL: http://orgprints.org/6702/1/the_development_of_organic_milk_production_systems_of0317.pdf |
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| Haj Seyed Hadi, Mohammad Reza; Darzi, Mohammad Taghi; Sharifi Ashoorabadi, Ebrahim. |
| This investigation was carried out in the spring of 2005 – 2007 in the Research Station of Rangelands in Hamand - Damavand region of IRAN to study the effects of conventional and low input production systems on seed yield and sylimarin percentage of Silybum marianum L. This experiment was done in split-split plot based on randomized complete block design with 3 replications. Treatments were 2 production systems (Conventional and Low input system) in the main plots, 3 planting time (25 of March, 4 and 14 of April) in the sub plots and 2 seed types (Improved and Native of Khoozestan) in the sub-sub plots. Results showed that there was a significant difference between production systems. The highest height (125.8cm) and number of capitols per plant (10.4)... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farm nutrient management. |
| Ano: 2008 |
URL: http://orgprints.org/11941/1/Haj_Seyed_Hadi_11941_ed.doc |
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| Duman, İbrahim; Elmacı, Ömer Lütfi. |
| Çalışma 2001-2010 yıllarında Ege Üniversitesi Ziraat Fakültesi Menemen Araştırma Uygulama ve Üretim Çiftliğinin “organik” sertifikalı alanında yürütülmüştür. Ana bitki olarak Yalova Yağlık 28 kapya biber çeşidi, ön bitki olarak da fiğ, kırmızı lahana, marul, bakla, brokkoli, kereviz, karnabahar ve bezelye kullanılmıştır. Organik tarım yönetmeliğine uygun yürütülen çalışmada 9 yıllık süre içerisinde ön bitkilere göre elde edilen biber verim değerleri ile bazı kalite özellikleri belirlenmiştir. Her ön bitki üretiminden sonra alınan toprak örneğinde de organik madde ve bitki besin elementlerindeki değişim incelenmiştir. Çalışmadan elde edilen verilere göre, fiğ ön bitkisi desteğindeki geçiş sürecinde yüksek oranlarda (4352 kg da-1) elde edilen biber toplam... |
| Tipo: Journal paper |
Palavras-chave: "Organics" in general; Farming Systems; Composting and manuring; Nutrient turnover; Farm nutrient management. |
| Ano: 2014 |
URL: http://orgprints.org/28153/1/Organik%20Ko%C5%9Fullarda%20Uzun%20S%C3%BCreli%20%C3%96nbitki-Sal%C3%A7al%C4%B1k%20Biber%20Kombinasyonu%20%C5%9Eeklinde%20Yap%C4%B1lan%20Yeti%C5%9Ftiricili%C4%9Fin%20Verim%20Meyve%20ve%20Toprak%20%C3%96ze.pdf |
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| Cornish, P. S.. |
| Two case-study farms with negative P balances maintained acceptable productivity without fertilisers, apparently by ‘mining’ ‘available’ P reserves in surface and subsoil. The question for these organic farms is ‘how long before fertiliser is needed?’ With six farms on lower-fertility, weakly acidic to alkaline soils and modest rainfall (380-580 mm/yr), low productivity was related to P deficiency despite positive P balances from using allowable fertilisers. Useful supplies of compost or manure were unavailable. Until effective allowable fertilisers or microbial inoculants have been developed, there is a case for using soluble forms of P fertiliser on soils where soil-solution P is low and soil P-sorption is high, so that additions of soluble P ‘feed... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover; Farm nutrient management. |
| Ano: 2007 |
URL: http://orgprints.org/9905/1/Cornish%2D2007%2Dphosphorus_management.pdf |
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| Zombardo, A.; Puccioni, S.; Perria, R.; Leprini, M.; Priori, S.; Costantini, E.A.C.; Storchi, Paolo. |
| In Italian vineyards it is common to find more or less extended areas with chemico-physical or biological soil deficiencies and problems in plant vigor and grape production. A reduced agronomic functionality is caused by wrong soil managements and improper land preparation before vine plantations. A strong land transformation alters, in fact, the existing natural balance, causing loss of organic matter and nutrients, erosions, reduction of available water and metal accumulation. This phenomenon affects the growth of vines and the grape yields. The aim of this work is to evaluate the effect of degraded soils on the vineyards of two Tuscan vine-growing regions (Chianti Classico and Maremma Toscana). In two farms, we have identified respectively... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems; Soil; Viticulture; Farm nutrient management. |
| Ano: 2016 |
URL: http://orgprints.org/31307/1/23%20-%20Zombardo%20et%20al_CONAVI2016.pdf |
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| Bertelsen, Inger. |
| Som et led i projektet RowCrop har SEGES Økologi Innovation udført efterafgrødeforsøg, for at undersøge hvilke efterafgrøder, der er egnede til dette dyrkningssystem. Forskellige efterafgrøder er her udlagt efter henholdsvis en, to eller tre radrensninger. Forsøgene viste, at rødkløver er velegnet som efterafgrøde i rækkedyrkningssystemet, da den har god jorddækning i oktober, hvad enten den sås efter 1., 2., eller 3. radrensning. Samtidig giver den ikke udbyttetab eller høstbesvær i hovedafgrøden og har en god genvækst efter høst. Hør Inger Bertelsen, SEGES Økologi Innovation, fortælle om efterafgrødeforsøget. |
| Tipo: Video |
Palavras-chave: Production systems; Weed management; Farm nutrient management; Post harvest management and techniques. |
| Ano: 2018 |
URL: http://orgprints.org/34959/2/video.php_y%3Dhttps_%252F%252Fwww.youtube.com%252Fwatch_v%3DRiotBvspt_4%26feature%3Dyoutu.be |
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| Hospers-Brands, A.J.T.M.; Anema, D.; Bus, M.C.. |
| 2013 was the second year of the "PlantyOrganic" system development in practice. The six-year rotation is laid out and measurements took place at soil and crop. With the exception of the potatoes in 2013 all crops had the pre-crop as foreseen in the design. The fertilizers used were completely produced in the own system, as foreseen in the system design. The amounts of nitrogen applied were about 45 % higher than in the design. Soil nitrogen is measured and used as input in the nitrogen model NDICEA. There was a sufficient match between measured and calculated level of soil mineral nitrogen. The crops performed well, with a high yield in carrots and oats, and a disappointing yield in wheat. In wheat nitrogen was limiting for the yield, we do not yet have a... |
| Tipo: Report |
Palavras-chave: Nutrient turnover; Air and water emissions; Farm nutrient management. |
| Ano: 2014 |
URL: http://orgprints.org/26064/1/2892.pdf |
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| Registros recuperados: 641 | |
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