Now showing items 21-27 of 27
Matter fluxes in mountain oases of Al Jabal Al Akhdar, Oman
Since 1970 when Sultan Qaboos bin Said Al Said took over power from this father, agriculture in Oman has undergone major transformations as a consequence of rapid population and economic growth. In this process groundwater extraction has dramatically increased to meet domestic and agricultural needs. Recently, the agro-ecosystem of ancient mountain oases of Oman have received greater attention as interest has grown to understand the causes of their often millennia old sustainable productivity. Particularly little ...
Nutrient cycling and nutrient use efficiency in urban and peri-urban agriculture of Kabul, Afghanistan
Like elsewhere also in Kabul, Afghanistan urban and peri-urban agriculture (UPA) has often been accused of being resource inefficient and unsustainable causing negatives externalities to community health and to the surroundings. These arise from the inappropriate management and use of agricultural inputs, including often pesticides and inter-city wastes containing heavy metal residues and pathogens. To address these concerns, parallel studies with the aims of quantification of carbon (C), nitrogen (N), phosphorus (P) ...
Matter flows and balances in urban vegetable gardens of Bobo Dioulasso, Burkina Faso (West Africa)
Many efforts are undertaken for sustaining urban agriculture in African cities. This study therefore investigated nutrient management practices in urban vegetable gardens of Bobo Dioulasso, Burkina Faso (West Africa). Nitrogen (N), phosphorus (P), potassium (K), and carbon (C) fluxes were quantified and nutrient balances calculated for three gardens representing the typical commercial gardening + field crops and livestock system (cGCL) and three gardens representing the commercial gardening + semi-commercial field ...
Integrated soil fertility management in eastern and western Africa: The role of knowledge and innovation systems, its adoption and impact
The rise in population growth, as well as nutrient mining, has contributed to low agricultural productivity in Sub-Saharan Africa (SSA). A plethora of technologies to boost agricultural production have been developed but the dissemination of these agricultural innovations and subsequent uptake by smallholder farmers has remained a challenge. Scientists and philanthropists have adopted the Integrated Soil Fertility Management (ISFM) paradigm as a means to promote sustainable intensification of African farming systems. ...
Improving cropping systems of semi-arid south-western Madagascar under multiple ecological and socio-economic constraints
Das Mahafaly Plateau im südwestlichen Madagaskar ist gekennzeichnet durch raue klimatische Bedingungen, vor allem regelmäßige Dürren und Trockenperioden, geringe Infrastruktur, steigende Unsicherheit, hohe Analphabetenrate und regelmäßige Zerstörung der Ernte durch Heuschreckenplagen. Da 97% der Bevölkerung von der Landwirtschaft abhängen, ist eine Steigerung der Produktivität von Anbausystemen die Grundlage für eine Verbesserung der Lebensbedingungen und Ernährungssicherheit in der Mahafaly Region. Da wenig über die ...
Manure application effects on nitrogen pools in a subtropical soil of Oman
Agricultural productivity of the millennia-old oasis agriculture in Oman is based on the continuous application of high rates of goat and sheep manure combined with flood irrigation. The high nitrogen (N) and carbon (C) turnover in these systems is a result of year-around high temperatures and continuous soil moisture, but knowledge is lacking on how N and C are transformed under these conditions. Therefore, this study aimed at investigating the N movement in different soil N pools. To this end a field experiment was ...