|
|
|
| Registros recuperados: 139 | |
|
|
| Pedersen, Anders; Stoumann Jensen, Lars; Thorup-Kristensen, Kristian. |
| The use of crops and catch crops with deep rooting can strongly improve the possibility of retaining nitrate-N that will otherwise be leached to the deeper soil layers and end up in the surrounding environment. But will it always be an advantage for the farmer to grow a catch crop? This will depend on factors such as soil mineral nitrogen level, soil water holding capacity, winter precipitation, rooting depth and N demand of the scceeding crop. These factors interact, and it can be very difficult for farmers or advisors to use this information to decide whether growing a catch crop will be beneficial. To analyse the effect of catch crops under different Danish soil and precipitation conditions, we used the soil, plant and atmosphere model Daisy. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover; Post harvest management and techniques; Crop combinations and interactions; Farm nutrient management; Soil quality. |
| Ano: 2005 |
URL: http://orgprints.org/7831/1/7831.pdf |
| |
|
|
| Oleskowicz-Popiel, Piotr; Thomsen, Mette Hedegaard; Thomsen, Anne Belinda; Schmidt, Jens Ejbye. |
| In order to evaluate new strategies for the production of renewable energy within sustainable organic agriculture, a process-simulation model for a 100 ha organic farm was developed. Data used for the model was obtained from laboratory trials, literature data, consultancy with experts, and results from the BioConcens project (http://www.bioconcens.elr.dk). Different design approaches were evaluated in order to establish the most suitable configuration. Rye grains, clover grass silage, maize silage, whey and cattle manure were selected as raw materials for co-production of fuels, feed and fertilizer at the organic farm, based on the fact that crops grown in organic agriculture act as key carbon sources whereas manure and whey were applied primarily as the... |
| Tipo: Journal paper |
Palavras-chave: Technology assessment; Post harvest management and techniques. |
| Ano: 2009 |
URL: http://orgprints.org/19015/4/19015.pdf |
| |
|
|
| Oltmanns, Meike; Raupp, Joachim. |
| Ökologische Betriebe ohne eigene Viehhaltung müssen eine Düngungsalternative für Stallmist finden. Im Gemüse- oder Feldgemüseanbau sind dies meist geschrotete, großkörnige Leguminosensamen. Während die Wirkungen des Stallmistes in vielen Feldversuchen bereits belegt worden sind, stehen entsprechende Untersuchungen mit Leguminosenschroten noch aus. Daher werden seit 1996 in einem Feldversuch die Langzeit-Effekte von pflanzlichen organischen Düngern und Stallmist sowie Mineraldüngung (bei gleicher Stickstoff-Aufwandmenge, 100 kg ha-1 N) verglichen. Ergebnisse in 2005: Der Ertrag der marktfähigen Kartoffeln lag bei den Düngungsarten Stallmist und Ackerbohnenschrot mit ca. 230 dt ha-1 gleich hoch. Der Kaliumgehalt der mit Ackerbohnenschrot gedüngten... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Post harvest management and techniques; Root crops; Composting and manuring. |
| Ano: 2006 |
URL: http://orgprints.org/9184/1/pfl06kartE.pdf |
| |
|
| |
|
|
| Brito, Renata; Lopes, Higino Marcos; Fernandes, Maria do Carmo de Araújo; Aguiar, Luiz Augusto de; Ceará, Paula Senna. |
| Com o avanço da agricultura orgânica, cresce a demanda por sementes de qualidade oriundas desse sistema de produção. A utilização de fungicidas químicos é vetada em todo o manejo do sistema orgânico de produção e tratamentos alternativos devem ser utilizados com eficiência, preservando a qualidade física, fisiológica e sanitária das sementes. O presente trabalho teve por objetivo avaliar a qualidade fisiológica e sanitária de sementes de feijão vagem produzidas sob o cultivo orgânico e submetidas ao congelamento. Os experimentos foram conduzidos no Laboratório de Controle de Qualidade de Sementes, do Instituto de Agronomia da Universidade Federal Rural do Rio de Janeiro, e no laboratório de Análises de Sementes do Centro Estadual de Pesquisa em Agricultura... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems; Crop husbandry; Social aspects; Post harvest management and techniques. |
| Ano: 2013 |
URL: http://orgprints.org/25701/1/Brito_Avalia%C3%A7%C3%A3o%20da%20qualidade%20fisiol%C3%B3gica%20e%20sanit%C3%A1ria%20de%20sementes%20de%20feij%C3%A3o-vagem.pdf |
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Kádár, Zsófia; Christensen, Anne Deen; Thomsen, Mette Hedegaard; Bjerre, Anne Belinda. |
| In organic farming, there is a strong effort to minimize the share of non-renewable resources (e.g. fossil fuels) and use only (preferably on-farm produced) bio-based energy and renewable raw materials, with the aim of achieving sustainable production systems and to become self-sufficient in energy. Throughout our studies, wheat and rye grain was used as raw material in bioethanol production with the purpose of producing in situ enzymes (during germination) for the hydrolysis of starch in the grains and compared with commercial amylase enzyme preparations. Whey permeate was incorporated into the grain in Simultaneous Saccharification and Fermentation (SSF) process to use a cheap nutrient and water source. The ethanol fermentations were completed by 190... |
| Tipo: Journal paper |
Palavras-chave: Post harvest management and techniques. |
| Ano: 2011 |
URL: http://orgprints.org/19010/1/JFUE_5339[1].pdf |
| |
|
|
| Kádár, Zsófia; Christensen, Anne Deen; Thomsen, Mette Hedegaard; Thomsen, Anne Belinda. |
| The malting in brewing process develops enzymes that are required to hydrolyze the complex starch in grain into simple fermentable sugars. These proceed the three following steps: Steeping encourages germination to start, germination prepares the conversion of the starch to sugars, and kilning stops the germination. In this study, a method for bioethanol production from rye grain was developed by utilizing the inherent amylase activity from germination of the seed. Grain germination was performed in two steps (steeping, germination) under different conditions, where the effect of temperature, duration and humidity was examined on amylase activity and final ethanol yield. Commercial enzymes were used for reference experiments. Simultaneous... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Post harvest management and techniques. |
| Ano: 2009 |
URL: http://orgprints.org/19026/2/19026.pdf |
| |
|
|
| Kádár, Zsófia; Christensen , Anne Deen; Oleskowicz-Popiel, Piotr; Heiske, Stefan; Thomsen , Mette Hedegaard; Schmidt, Jens Ejbye. |
| Organic agriculture is one sustainable alternative to avoid negative environmental effects often caused by conventional agriculture. The area for organic farming in Europe is increased rapidly in the last decades and Denmark is one of the top-ten countries in Europe as regards the organic share of the total cultivated area. The production of bioenergy from local biological resources and the maintenance of soil fertility seem to have been opposing aims in organic agriculture. In organic farming, there is a strong effort to reduce the reliance on fossil fuels and decrease greenhouse gas emissions in organic agriculture. Cheese whey is a by-product from the dairy industry, which has the highest market share of organic foods in Denmark. It generates... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Technology assessment; Composting and manuring; Post harvest management and techniques. |
| Ano: 2011 |
URL: http://orgprints.org/19017/2/19017.pdf |
| |
|
|
| Oleskowicz-Popiel, Piotr; Nielsen, Henrik Bangsø; Thomsen, Anne Belinda; Schmidt, Jens Ejbye. |
| The production of bioenergy in organic agriculture (OA) can reduce its dependency on fossil fuels and decrease greenhouse‐gases (GHG) emissions; consequently increasing the sustainability of organic farming. Different biomasses were characterized biologically and chemically for their biogas and bioethanol potential at organic farms in Denmark. Batch experiments indicated methane yield [GJ/ha]: 260.7 (fresh maize), 272.7 (maize silage), 127.1 (fresh rye), 169.7 (rye silage), 161.7 (dried rye), 110.5 (fresh clover), 117.8 (clover silage), 72.3 (dried clover), and 41.1 (dried vetch). Theoretical ethanol yield [GJ/ha] showed: 119.8 (fresh maize), 109.2 (maize silage), 36.9 (fresh rye), 39.9 (rye silage), 84.7 (dried rye), 28.9 (fresh clover), 24.4 (clover... |
| Tipo: Journal paper |
Palavras-chave: Post harvest management and techniques. |
| Ano: 2011 |
URL: http://orgprints.org/19009/4/19009.pdf |
| |
|
| |
| Registros recuperados: 139 | |
|
|
|
