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| Niether, Wiebke; Schneidewind, Ulf; Armengot, Laura; Adamtey, Noah; Schneider, Monika; Gerold, Gerhard. |
| Soil moisture has high spatial and temporal variability, depending on topography, soil texture, vegetation and meteorological conditions. It influences many processes in the soil and supplies water to the vegetation. This is often a limiting factor in agricultural production. Over an 18-month period, we measured soil moisture dynamics down to a depth of 70 cm in a long-term trial in Bolivia comprising six different land-use systems, i.e. cocoa monocultures and agroforestry systems, both under organic and conventional management, successional cocoa agroforestry systems and a natural fallow. Soil was heterogeneous over the area and in depth. We identified and separated two soil groups which differed in both, texture and soil water retention capacity.... |
| Tipo: Journal paper |
Palavras-chave: Crop husbandry; Soil; Bolivia; Environmental aspects. |
| Ano: 2017 |
URL: http://orgprints.org/32091/1/Niether-etal-2017-Catena-Vol158-p340-349.pdf |
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| Niether, Wiebke; Schneidewind, Ulf; Fuchs, Michael; Schneider, Monika; Armengot, Laura. |
| Farmers expect yield reduction of cash crops like cocoa when growing in agroforestry systems compared to monocultures, due to competition for resources, e.g. nutrients and water. However, complementarities between species in the use of resources may improve resource use efficiency and result in higher system performance. Cocoa trees have a shallow rooting system while the rooting characteristics of the associated trees are mainly unknown. This work investigates fine root distribution and production in five cocoa production systems: two monocultures and two agroforestry systems under conventional and organic farming, and a successional agroforestry system. In the organic systems a perennial leguminous cover crop was planted and compost was added, while... |
| Tipo: Journal paper |
Palavras-chave: Crop husbandry. |
| Ano: 2019 |
URL: http://orgprints.org/34492/1/niether-etal2019_ScienceTotalEnvironment-Vol657-p558-567.pdf |
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| Schneidewind, Ulf; Niether, Wiebke; Armengot, Laura; Schneider, Monika; Sauer, Daniela; Heitkamp, Felix; Gerold, Gerhard. |
| Agroforestry systems (AFS) can serve to decrease ecosystem carbon (C) losses caused by deforestation and inadequate soil management. Because of their shade tolerance, cacao plants are suitable to be grown in AFS, since they can be combined with other kinds of trees and shrubs. The potential for C sequestration in cacao farming systems depends on various factors, such as management practices, stand structure and plantation age. We compared conventionally and organically managed cacao monoculture systems (MCS) and AFS in Sara Ana (Bolivia) with respect to C stocks in plant biomass and to amounts of litterfall and pruning residues. The total aboveground C stocks of the AFS (26 Mg C ha−1) considerably exceeded those of the MCS (~7 Mg C ha−1), although the... |
| Tipo: Journal paper |
Palavras-chave: Crop husbandry; Soil. |
| Ano: 2018 |
URL: http://orgprints.org/34494/1/schneidewind-etal-2018-ExperimentalAgri-online-p1-19.pdf |
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| Schneider, Monika; Amurrio, Patricia; Aparicio, James; Gômez, Isabel; Limachi, Miguel; Milz, Joachim; Schneidewind, Ulf; Seidel, Renate; Trujillo, German. |
| Cocoa, mainly produced by 5 to 6 millions of smallholder farmers, is considered as one of the most sustainable production system in the humid tropics. Little is known about the sustainability of different cocoa production systems. A long-term experiment is set up in Alto Beni at 400m above sea level with a humid winter dry climate, 1’540 mm annual rainfall. The trial assesses the sustainability of five cocoa (Theobroma cacao) production systems with the parameters of yield and yield stability, input-output efficiency of nutrients and energy, soil fertility, biodiversity, economic result, climate change mitigation and adaptation. The two-factorial experiment is arranged in an completely randomised block design; the five cocoa treatments, based on local and... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems; Systems research and participatory research. |
| Ano: 2010 |
URL: http://orgprints.org/18371/1/schneider-etal-2010-tropentag.pdf |
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