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Dissertation
Remote sensing of yield and invasive species in nature conservation grasslands invaded by Lupinus polyphyllus
(2021-07)
Extensiv bewirtschaftetes Grünland und naturnahes Naturschutzgrünland sind wertvolle Bereitsteller von Ökosystemdienstleistungen und könnten eine Schlüsselrolle in zukünftigen Managementstrategien spielen zum Schutz von Arten, die durch den Klimawandel bedroht sind. Jedoch ist extensives Grünland, wie viele andere Ökosysteme, bedroht durch die Ausbreitung invasiver Arten, welche einen großen Einfluss auf den Verlust der Biodiversität haben.
Um den Herausforderungen unserer Zeit zu begegnen, sollten Innovationen in ...
Zeitschrift
Vol. 9 No. 4 (2021)
(Specialized Partnerships in Sustainable Food Systems and Food Sovereignty, Faculty of Organic Agricultural Sciences, the University of Kassel, Germany and the Federation of German Scientists (VDW), 2021-11)
Aufsatz
Seasonal variation in mycoflora associated with asymptomatic maize grain from small-holder farms in two provinces of South Africa
(2020-11-27)
Seed quality plays an important role in the establishment of healthy crop stands. The aim of this study was to identify the mycoflora associated with maize grain collected over two growing seasons, one experiencing severe drought, from small-holder farms across KwaZulu-Natal (KZN) and the Eastern Cape (EC), two important provinces with maize producing small-holder farmers in South Africa. Asymptomatic maize ears were collected at harvest during two maize growing seasons from farms located in Hlanganani (KZN), ...
Dissertation
Untersuchung von Farbspektren und deren Zusammenhang mit anderen Produkteigenschaften bei unterschiedlichen Trocknungsprozessen von Lebensmitteln
(2021)
Zur Erfassung von Veränderungen der Produkteigenschaften während der Trocknung von Lebensmitteln werden zerstörungsfreie Qualitätsmesstechniken gefordert, mit denen Veränderungen im Inneren des Produkts bestimmt werden können. Gerade im industriellen Einsatz sind schnelle, präzise, und gleichzeitig robuste Verfahren besonders wichtig, um qualitativ hochwertige Produkte zu erhalten.
In dieser Arbeit wurde zur optischen Qualitätsmessung ein neuartiges multispektrales Kamerasystem eingesetzt, um von Veränderungen der ...
Aufsatz
Factors for the success of agricultural cooperatives in Brazil
(2021-02-25)
The Brazilian cooperative agribusiness is in a transitional phase. This moment is marked by the advancement of market globalisation, which has exerted great competitive pressure on national agribusiness. To survive and thrive in a globalised and fiercely competitive environment, cooperatives must face new challenges in the pursuit of competitiveness. This study aimed to identify and describe the main success or failure factors affecting agricultural cooperatives. To this end, bibliographic research was used as a ...
Aufsatz
Litter characteristics of pine shavings, bio-secure pine shavings and sunflower hulls and its impact on broiler performance
(2021-02-22)
The aim of this study was to investigate the physical characteristics of three litter materials, namely pine shavings (PS), bio-secure, fumigated pine shavings (BS) and sunflower hulls (SH) and its influence on broiler performance over a 33-day production cycle. The experiment was conducted in commercial poultry houses holding 42,500 chicks each, utilising a randomised block design with six house replicates per treatment. Litter samples were collected weekly for analyses of moisture, water-holding capacity, bulk ...
Aufsatz
A review of soil fertility management communication in sub-Saharan Afrika
(2021-02-12)
In sub-Saharan Africa (SSA), declining soil fertility is among the factors a ecting optimal food production. Although a number of interventions have been implemented to improve soil fertility management (SFM) in SSA, their adoption especially among small scale farmers has been low. Although the literature provides considerable evidence of socioeconomic factors which influence adoption, the subject of how communication influences adoption of SFM remains under-explored. This paper therefore reviewed studies on SFM ...
Aufsatz
Determinants of protected tomato production technologies among smallholder peri-urban producers in Kiambu, Kenya
(2021-03-05)
Climate variability and the rise in incidences of pests and diseases continue to undermine production of high value vegetables among smallholder farmers in sub-Saharan Africa. In order to respond to these challenges, protected farming technologies (PFT) (such as greenhouses) which modify the plant environment and therefore aid in avoiding the harmful eects of climatic factors have been promoted. Greenhouses protect the crops against high solar radiation and heavy rainfall that have the potential of destroying vulnerable ...
Aufsatz
Socio-economic aspects of irrigation agriculture as livelihood for rural families in Brazil’s semi-arid northeast
(2019-12-04)
Along the lower-middle São Francisco River, in the semi-arid region of northeast Brazil, irrigated agriculture contributes to reduce rural poverty. In the framework of the Itaparica Reservoir construction, three irrigation schemes were implemented in the Pernambuco state to compensate the local population for flooded land. Despite favourable production conditions for irrigated agriculture, many smallholders in the irrigation schemes are facing poverty. To identify socio-economic key indicators on farm income, expert ...
Dissertation
Methodenentwicklung für die Trennung verschiedener Proteinhydrolysate in Peptidfraktionen per Crossflow Diafiltration & sensorische Bewertung der Fraktionen
(2019)
Bestimmte Peptidverbindungen besitzen Geschmacksqualitäten, welche sie für einen Einsatz in Lebensmitteln qualifizieren. Neben einer chemischen Synthese bestimmter Verbindungen können Peptide auch durch Hydrolyse intakter Proteine gewonnen werden. Zur Trennung und Aufreinigung stellt die Crossflow-Filtrationstechnik eine skalierbare Alternative zu chromatographischen Trennverfahren dar.
Im Rahmen dieser Arbeit wurde ein Crossflow-Diafiltrationsverfahren unter Verwendung hydrophilisierter Polysulfon-Membranen (MWCO: ...