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Dissertation
Studies on arbuscular mycorrhiza (AM) in the Alentejo (Portugal) using pea mutants resistant to AM fungi as a control tool for field conditions
(2002-09-20)
The utilization and management of arbuscular mycorrhiza (AM) symbiosis may improve production and sustainability of the cropping system. For this purpose, native AM fungi (AMF) were sought and tested for their efficiency to increase plant growth by enhanced P uptake and by alleviation of drought stress. Pot experiments with safflower (Carthamus tinctorius) and pea (Pisum sativum) in five soils (mostly sandy loamy Luvisols) and field experiments with peas were carried out during three years at four different sites. ...
Dissertation
Aufbereitete Aluminium-Salzschlacke als Rekultivierungsmaterial : Untersuchungen zum Stoff- und Wasserhalthalt eines Rekultivierungsmaterials im Labor und Freiland
(Universität Kassel, FB 11, Ökologische Agrarwissenschaften, 2002-09-23)
Aufsatz
Multi-site time-trend analysis of soil fertility management effects on crop production in sub-Saharan West Africa
(2002)
Soil fertility constraints to crop production have been recognized widely as a major obstacle to food security and agro-ecosystem sustainability in sub-Saharan West Africa. As such, they have led to a multitude of research projects and policy debates on how best they should be overcome. Conclusions, based on long-term multi-site experiments, are lacking with respect to a regional assessment of phosphorus and nitrogen fertilizer effects, surface mulched crop residues, and legume rotations on total dry matter of cereals ...