SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Amjad, Waseem; Hensel, Oliver; Munir, Anjum.

Uniform quality drying throughout the drying chamber of a dryer is important for a quality oriented drying process. The final quality of dried products significantly depends upon the drying temperature. A batch type dryer was developed for uniform air distribution. ANSYS-fluent was used to analyse the temperature distribution in the dryer. To assess the effect of drying temperature homogeneity on quality parameters, color and shrinkage of potato slices (6 mm thick) at 60° C were measured. The color parameters were quantified in CIELAB color space system. The shrinkage of slices (20 mm round samples) was measured using image analysis software. The rate of color change was found uniform at all sections of drying chamber with high value of R2. The kinetics of...

Classification of organic beef storage conditions and maturation stage using VNIR hyperspectral imaging

Ano: 2015

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3265

Crichton, Stuart O.J.; Kirchner, Sascha M.; Porley, Victoria; Retz, Stefanie; von Gersdorff, Gardis; Hensel, Oliver; Weygandt, Martin; Sturm, Barbara.

Consumer trust in the food industry is heavily reliant upon accurate labelling of meat products. As such, methods which can verify whether meat is correctly labelled are of great value to producers, retailers, and consumers. This paper illustrates two approaches to classify between, fresh and frozen thawed, and in a novel manner matured and matured frozen-thawed, as well as fresh and matured beef using the 500-1010 nm waveband, captured using hyperspectral imaging, and CIELAB measurements. The results show successful classification based upon CIELAB between 1) fresh and frozen-thawed (CCR = 0.93), and 2) fresh and matured (CCR = 0.92). With successful classification between matured and matured frozen-thawed beef using the entire spectral range (CCR =...

Tipo: Journal paper

Palavras-chave: Food security; Food quality and human health Processing; Packaging and transportation Consumer issues Produce chain management.

Ano: 2017

URL: http://orgprints.org/30682/1/crichton-etal-2017-MeatScience-Vol129-p20-27.pdf

Drying behavior and quality parameters of dried beef (biltong) subjected to different pre-treatments and maturation stages

von Gersdorff, Gardis J.E.; Porley, Victoria E.; Retz, Stefanie K.; Hensel, Oliver; Crichton, Stuart.O.J.; Sturm, Barbara.

The drying behavior of fresh, matured, and frozen beef, marinated with 0.5% salt, 1% salt, salt and vinegar, and blind samples, dried at 70°C, was investigated. Weight and color (CIELAB) were measured and images of the samples were created with a hyperspectral imaging camera. Results show that the marinade and the type of beef influences the drying behavior of beef, but not the final color. Results from the hyperspectral imaging show that it is possible to build good fitting prediction models resulting in high R2 (min. 0.81, max. 0.98) and low RMSE (min. 0.08, max. 2.35) for moisture content, a* and b* values.

Tipo: Journal paper

Palavras-chave: Food security; Food quality and human health Processing; Packaging and transportation.

Ano: 2017

URL: http://orgprints.org/32457/1/Drying%20behavior%20and%20quality%20parameters%20of%20dried%20beef%20biltong%20subjected%20to%20different%20pre%20treatments%20and%20maturation%20stages.pdf

Drying of fresh organic beef with differnt pretreatments

von Gersdorff, GardisJ.E.; Crichton, StuartO.J.; Retz, Stefanie K.; Hensel, Oliver; Sturm, Barbara.

Drying of foods is one of the oldest food preservation techniques, but it gains particular importance when regarding food quality and shelf life. Meat snacks are of growing interest because they are high in protein but low in fat and carbohydrates. In organic food production the use of preservatives is limited, and for this reason product specific drying strategies and pretreatments are essential. In this study fresh beef slices were treated with salt (0,5 % and 1 %) and salt and vinegar (0.5% and 5 %) and were dried at 70 °C in a convection dryer. Moisture content and color were measured during the drying process alongside visual to near infra-red hyperspectral images of the slices. The optimal wavelengths for moisture content and color were determined...

E+E-Projekt „Integration von Naturschutzzielen in den Ökologischen Landbau am Beispiel der Hessischen Staatsdomäne Frankenhausen“ - Maßnahmen zur Entwicklung dauerhafter Landschaftsstrukturen

Palavras-chave: Processing; Packaging and transportation Produce chain management.

Ano: 2016

URL: http://orgprints.org/30671/3/Paper-IDS2016_vG.pdf

Godt, Jochen; van Elsen, Thomas; Haase, Thorsten; Braukmann, Ulrich; Fricke, Thomas; Saucke, Helmut; Hensel, Oliver; Baierl, Cindy; Walter, Karl-Henning; Schumann, C.; Heß, Jürgen.

The Hessian state domain Frankenhausen near Kassel was converted to organic farming in July 1998 and serves as a research and demonstration farm of the univer-sity. Before that time the farm changed constantly by typical intensification of conven-tional farming: The landscape is a mirror of intense use: cleared and drained fields, canalised brooks and large fields with few structural elements. – Within the project “The Integration of Nature Conservation into Organic Farming” (supported by the German Federal Agency for Nature Conservation with funds from the Federal Envi-ronmental Ministry) and based on the analysis of the present situation using methods of landscape ecology. Measures to restore brooks, structural elements and biotopes are to be...

Effects of different soil water tensions on rapeseed crops (Brassica napus L.)

Palavras-chave: Systems research and participatory research; Landscape and recreation; Biodiversity and ecosystem services.

Ano: 2007

URL: http://orgprints.org/9559/1/9559_Godt_Poster.pdf

Bilibio, Carolina; Carvalho, Jacinto de Assunção; Hensel, Oliver; Fraga, Antônio Carlos; Richter, Uwe; Rezende, Fátima.

Correct irrigation management aims to determine the right amount of water at the right time. Also, it is one of the available tools to reduce energy and water costs, enabling maximum crop production. Considering these aspects, a study was conducted to determine the effects of different soil water tensions on rapeseed crop. For this purpose, an experiment was carried out in Brazil, at the department of Agricultural Engineering at the Federal University of Lavras, from April to October 2008. The experimental design was completely randomised, with four treatments of different soil water tensions (20, 40, 80 and 120 kPa) and four replicates amounting to 16 experimental plots. Crop vegetative, productive parameters and qualitative grain parameters were...

Entwicklung alternativer Zusatzstoffe für Bioprodukte, die der Verbesserung von Mehlmischungen für Back- und Teigwaren dienen, durch die Verwendung der Yamswurzel Dioscorea batatas

Ano: 2014

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1725

Hensel, Oliver.

Ziel des Projektes ist die Entwicklung ökologischer Zutaten aus der Yamswurzel Dioscorea batatas. Durch die Verwendung der D. batatas können Mehlmischungen in ihren sensorischen, physiologischen und gesundheitlichen Eigenschaften aufgewertet werden. In der Bio Branche gibt es eine Vielzahl an Mehlmischungen für Back- und Teigwaren aus Mais, Kartoffel, Reis, Soja und Buchweizen, hier werden oft Zusätze wie Johannisbrotkern- und Guarkernmehl verwendet. Die D. batatas wird bereits in Deutschland nach den Richtlinien des ökologischen Landbaus im Freiland angebaut. Um das neu entwickelte Produkt sowohl im handwerklichen als auch industriellen Bereich einführen zu können, wurde der Einfluss der Verarbeitungsschritte auf die Qualitätsparameter untersucht. Zur...

Tipo: Report

Palavras-chave: Food security; Food quality and human health Processing; Packaging and transportation.

Ano: 2011

URL: http://orgprints.org/21737/1/21737-08OE027-unikassel-hensel-2011-yamswurzel-Dioscorea-batatas.pdf

Experimental evaluation of bulk charcoal pad configuration on evaporative cooling effectiveness

Korese, Joseph Kudadam; Hensel, Oliver.

The purpose of the study was to evaluate the performance of bulk charcoal pad configuration, experimentally. For this, a number of experiments have been conducted in a wind tunnel in order to evaluate the pressure drop, cooling efficiency and specific water consumption as a function of air velocity, water flow rate and pad configuration. The test were carried out at six levels of air velocity (0.12, 0.51, 0.82, 1.05, 1.10 and 1.14 m s-1), three water flow rates (2.2, 3.2 and 5.2 l min-1) and three pad configurations: single layer pad (SLP), double layer pad (DLP) and triple layer pad (TLP) made out of small and large size charcoal particle of equivalent diameter 30 mm and 50 mm respectively. It was found that pressure drop range of small size charcoal pads...

Förderung der Mulchsaat im Ökolandbau - das Auflaufverhalten von Zwischenfrüchten

Palavras-chave: Charcoal; Pad configuration; Wind tunnel; Evaporative cooling; Pressure drop; Cooling efficiency; Specific water consumption.

Ano: 2016

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3841

Wilhelm, Birgit; Hensel, Oliver.

The several advantages of conservation tillage systems are interesting for organic farmers too. The positive effects concerning the reduction of soil erosion are well known and documented. The more residues are left on the soil surface the higher reduction of soil erosion is achieved. Nevertheless the plough is still the main tillage equipment in organic agriculture systems. A first step towards conservation tillage might be the tillage before intercrops. In a three years project the relationship of emergence rate from straw quantity, working depth and residue cover is investigated. Thick mulch layers have negative effects on the emergence rate of the followed crop. Modern machinery for conservation tillage improve the incorporation of crop...

Grain legumes and soil fertility - Strategies for a successful cultivation

Palavras-chave: Crop combinations and interactions; Soil tillage.

Ano: 2009

URL: http://orgprints.org/14288/1/Wilhelm_14288.pdf

Böhm, Herwart; Bohne, Björn; Brandhuber, Robert; Bruns, Christian; Demmel, Markus; Finckh, Maria R.; Fuchs, Jacques G.; Gronle, Annkathrin; Hensel, Oliver; Lux, Guido; Möller, Detlev; Schmidt, Harald; Schmidtke, Knut; Spiegel, Ann-Kathrin; Vogt-Kaute, Werner; Wilbois, Klaus-Peter; Wild, Melanie; Wolf, Daniel.

The German Federal programme on organic farming and other forms of sustainable agriculture developed practical cultivation strategies with the aim of improving soil fertility and plant nutrition. During the five-year project, some new practical knowledge was gained. These findings are listed in the booklet. Reading this guideline should encourage farmers to intensify the cultivation of grain legumes.

Tipo: Practice tool

Palavras-chave: Soil.

Ano: 2014

URL: http://orgprints.org/31992/1/1654-koernerleguminosen.pdf

Grundbodenbearbeitung im Ökolandbau – eine Betriebsumfrage

Wilhelm, Birgit; Tiedemann, Lukas; Hensel, Oliver; Heß, Jürgen.

Um einen Überblick über die aktuelle Situation der Bodenbearbeitung auf Ökobetrieben in Deutschland zu erhalten, wurde ein Fragebogen an 3000 Ökobetriebe verschickt. 367 Ackerbauern beantworteten fünf Fragen zur Bodenbearbeitung auf ihren Betieben. 56% der Betriebe geben an nur mit dem Pflug zu arbeiten, 38 % nennen neben dem Pflug mindestens ein weiteres Gerät zur Grundbodenbearbeitung und 6% arbeiten ohne Pflug. 42% der befragten ökobauern bearbeiten den Boden tiefer als 22 cm. 22% der Betriebe arbeiten maximal 15 cm tief. Die Ergebnisse zur Bearbeitungstiefe zeigen, dass sich im Ökolandbau in Deutschland im Vergleich zu einer ähnlichen Umfrage von 1990 eine intensivere Bodenbearbeitung durchgesetzt hat.

High pH thresholding of beef with VNIR hyperspectral imaging

Palavras-chave: Soil tillage.

Ano: 2011

URL: http://orgprints.org/17564/3/Wilhelm_17564.pdf

Crichton, Stuart O.J.; Kirchner, Sascha M.; Porley, Victoria E.; Retz, Stefanie K.; von Gersdorff, Gardis J.E.; Hensel, Oliver; Sturm, Barbara.

Initial quality grading of meat is generally carried out using invasive and occasionally destructive sampling for the purposes of pH testing. Precise pH and thresholds exist to allow the classification of different statuses of meat, e.g. for detection of dry, firm, and dark (DFD) (when dealing with cattle and sheep), or pale, soft exudative meat (when dealing with pork). This paper illustrates that threshold detection for pH level in beef with different freshness levels (fresh, fresh frozen-thawed, matured, and matured frozen-thawed). Use of support vector machine (SVM) analysis allowed for the classification of beef samples with a pH above 5.9, and below 5.6, with an accuracy of 91% and 99% respectively. Biochemical and physical conditions of the meat...

Tipo: Journal paper

Palavras-chave: Food security; Food quality and human health Processing; Packaging and transportation.

Ano: 2017

URL: http://orgprints.org/31330/1/1-s2.0-S0309174017301651-main.pdf__tid%3Dadef2be4-cf94-11e7-a0cd-00000aacb35e%26acdnat%3D1511362494_f1284aed7bc8efcad6ef2bc3ef5ee357

Hyperspectral imaging for the determination of potato slice moisture content and chromaticity during the convective hot air drying process

Amjad, Waseem; Crichton, Stuart O.J.; Munir, Anjum; Hensel, Oliver; Sturm, Barbara.

Hyperspectral imaging (HSI) was utilised for the determination of moisture content of potato slices with three thicknesses (5 mm, 7 mm, 9 mm) at three drying temperatures (50 °C, 60 °C, 70 °C) during convective drying in a laboratory hot air dryer. The Page, thin-layer drying model was found better to explain the drying kinetics with a fitting accuracy of R2 (0.96–0.99) and lowest reduced Chi-square (0.00024–0.00090), Root mean square errors (RMSE) (0.014–0.026), and relative percentage error (1.5%–5.1%) under the used drying conditions. Spectral data were analysed using partial least squares regression (PLS) analysis, a multivariate calibration technique, alongside Monte Carlo Uninformative Variable Elimination (MCUVE-PLS) and competitive adaptive...

Tipo: Journal paper

Palavras-chave: Processing; Packaging and transportation.

Ano: 2018

URL: http://orgprints.org/32984/1/waseem-etal-2018-BiosysEngineering-Vol166-p170-183.pdf

Impact of extension education on improving knowledge of sustainable technical agricultural practices

Sucheta, Singh; Hensel, Oliver.

Agriculture is considered as a critical sector in the world economy. However, especially in developing countries, agriculture is dominated by small farmers and often fails to achieve its full productive potential. A major problem faced by small farmers is their poor knowledge of sustainable agricultural practices. This study was designed so as to measure the knowledge index of paddy farmers before and after the scientific intervention that was offered to them in India to find out the knowledge index of farmers involved in paddy cultivation and to provide them technical training thereby finding out impact of the training on knowledge level of the farmers. A validated knowledge scale was used to test the knowledge index of 100 farmers before the...

In Richtung eines präventiven Gesundheitsmanagements für heimische Zweinutzungsrinder in ökologischen Weideproduktionssystemen mittels neuartiger Zuchtstrategien auf Basis von innovativen Datenerfassungssystemen

Palavras-chave: Technical training Knowledge index; Improved agricultural practices; Impact of proficient training.

Ano: 2014

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2077

Hensel, Oliver; Kulig, Boris.

Nachfolgende Zusammenfassung wurden dem „2-Org-Cows Final Report for the CORE Organic Plus funded project” entnommen. Es werden nur Aspekte dargestellt, an denen die Agrartechnik mittelbar oder unmittelbar beteiligt war: • Successful implementation of SensOor technology in research/contract herds in all partner countries: This is the basis for an identical automatically recording technique of health and behaviour indicator traits across country borders. On the basis of SensOor® records from multiple dual-purpose cattle breeds across country borders, we identified genomic regions of interest and potential candidate genes for behaviour and welfare traits. • The ‘trait atlas’ is a basis for harmonized phenotyping across country borders and production...

Tipo: Report

Palavras-chave: Beef cattle; Breeding and genetics; Health and welfare.

Ano: 2018

URL: http://orgprints.org/35266/1/35266-14OE009-uni-kassel-hensel-2018-gesundheitsmanagement-zweinutzungsrinder.pdf

Kontrolle von Rhizoctonia solani in Kartoffeln mit einer neu entwickelten Reihenapplikationstechnik von suppressiven Komposten

Schulte-Geldermann, Elmar; Schüler, Christian; Hensel, Oliver; Heß, Jürgen; Finckh, Maria. R.; Bruns, Christian.

The soil borne pathogen Rhizoctonia solani is of increasing importance since organic seed potatoes are compulsory in organic potato production. No convincing measure to control the disease is available for organic production. The effect of a suppressive compost mixture of organic household and yard waste to control R. solani in potatoes was tested in an organic field trial at the University Kassel in 2006. The compost was directly applied at the seed tuber area. Seed tubers (variety Nicola) naturally infested with black scurf were planted in three infection classes (no, middle and high infection). Compost amendment had a strong impact on symptoms of R. solani on tubers. The reduction of both the infestation of harvested potatoes with black scurf and the...

Körnerleguminosen und Bodenfruchtbarkeit - Strategien für einen erfolgreichen Anbau

Palavras-chave: Crop health; Quality; Protection.

Ano: 2007

URL: http://orgprints.org/9617/1/9617_Schulte%2DGeldermann_Vortrag.pdf

Böhm, Herwart; Brandhuber, Robert; Bruns, Christian; Demmel, Markus; Finckh, Maria R.; Fuchs, Jacques; Gronle, Annkathrin; Hensel, Oliver; Lux, Guido; Möller, Detlev; Schmidt, Harald; Schmidtke, Knut; Spiegel, Ann-Kathrin; Vogt-Kaute, Werner; Werren, Dagmar; Wilbois, Klaus-Peter; Wild, Melanie; Wolf, Daniel.

Der Boden ist eine der wichtigsten Grundlagen unseres Lebens, das erkannte bereits der Bodenkundler und Jurist Friedrich Albert Fallou. Um der großen Bedeutung des Bodens gerecht zu werden, schrieb das „Bundesprogramm Ökologischer Landbau und andere Formen nachhaltiger Landwirtschaft“ (BÖLN*) eine interdisziplinäre Bekanntmachung aus, um praxisnahe Anbaustrategien zu entwickeln, um die Bodenfruchtbarkeit und Pflanzenernährung im Körnerleguminosenanbau zu verbessern. So wurde das interdisziplinäre Bodenfruchtbarkeitsprojekt ins Leben gerufen, in dem Wissenschaft, Beratung und Praxis eng verzahnt waren. Im Laufe des fünfjährigen Projektes kristallisierten sich viele praxisrelevante Erkenntnisse heraus, die nun in der Praxisbroschüre "Körnerleguminosen und...

Tipo: Report

Palavras-chave: Crop combinations and interactions Cereals; Pulses and oilseeds Composting and manuring Soil tillage Soil.

Ano: 2014

URL: http://orgprints.org/25326/1/broschuere_bodenfruchtbarkeit_web.pdf

Reihenapplikation von Komposten zur Kontrolle bodenbürtiger Krankheiten – technische Lösungen für Kartoffeln und Leguminosen

Bohne, Björn; Hensel, Oliver; Bruns, Christian.

In principal suppressive effects with composts on soilborne diseases are well known. In practise, however, a targeted utilisation is not common due to technical constraints. The more precise composts are applied at the site of action the more effective they are as shown in potatoes to control Rhizoctonia solani with a strip application of composts compared to broadcast application. Similar effects were achieved in peas. Therefore, dosage tools were developed for the use in potato planting machines and sowing machines for grain legumes. It was shown with defined composts (yard waste composts with size fraction <10 mm, 30-40 % humidity) that the developed tools will provide exact longitudinal and lateral application.

Simulation of Evapotranspiration and Drainage from Potash Tailings Covers using Hydrus-1D

Palavras-chave: Composting and manuring; Crop husbandry.

Ano: 2013

URL: http://orgprints.org/21591/1/21591_Bohne.pdf

Bilibio, Carolina; Hensel, Oliver; Uteau, Daniel; Peth, Stephan.

Evapotranspiration is the sum of evaporation of water from soils and transpiration from plants. It is a crucial part of the water cycle and can be measured using lysimeters. However, lysimeters require high maintenance and operation costs; as such, evapotranspiration models are used for making predictions. Thus, the aim of the present study was to calibrate the Hydrus-1D to predict the water balance components of an evapotranspiration cover (in this case, a thin covering layer) for potash tailings piles. Further simulations were performed using different fine fraction proportions, soil textures and crop parameters. A high association between the calibrated and observed drainage of substrates was found, with a variation of 2.9% (approximately 13.6 mm)....