E-Dissertationen: Browsing E-Dissertationen by Author "Martius, Christopher"
Now showing items 1-9 of 9
-
Bee Pollinators and Economic Importance of Pollination in Crop Production: Case of Kakamega, Western Kenya
Kasina, John Muo (2007)Bees are the main animal pollinators of crops worldwide. In Kakamega, Western Kenya, farmers do not manage them for pollination but rely on feral pollinators from the nearby habitats. The ability of these habitats to ... -
Biosphere-atmosphere-exchange of C and N trace gases and microbial N turnover processes in irrigated agricultural systems of the Aral Sea Basin, Uzbekistan
Scheer, Clemens (2008)Land-use and agricultural practices affect the soil microbial carbon (C) and nitrogen (N) turnover and hence the biosphere-atmosphere exchange of greenhouse gasses (GHG), namely N2O, CH4 and CO2. ... -
Conservation tillage in Kenya: the biophysical processes affecting its effectiveness
Maguta, Job Kihara (2009-07-14)Appropriate soil management is important for improved ecosystem functioning and high crop production. This study investigates how different tillage [reduced tillage (RT) and conventional tillage (CT)], crop residue (plus ... -
The contribution of different fauna communities to improved soil health: A case of Zimbabwean soils under conservation agriculture
Nhamo, Nhamo (2007)For improved and sustainable soil productivity, the application of soil conserving cropping systems is important. This study characterizes soil fauna as a basis for comparing conservation agriculture and conventional ... -
Coupling hydrological and irrigation schedule models for the management of surface and groundwater resources in Khorezm, Uzbekistan
Awan, Usman Khalid (2010-08-17)The irrigated agriculture in the Khorezm region of Uzbekistan is characterized by huge water withdrawals from the Amu Darya River. The vast infrastructure built for extensive irrigation, together with inappropriate drainage ... -
Nitrogen management in irrigated cotton-based systems under conservation agriculture on salt-affected lands of Uzbekistan
Devkota-Wasti, Mina Kumari (2011-11-23)Intensive soil tillage and mismanagement of irrigation water and fertilizers reduce soil organic matter and increase secondary soil salinization. These processes are increasing production costs, reducing soil fertility and ... -
Photogrammetric techniques for the functional assessment of tree and forest resources in Khorezm, Uzbekistan
Tupitsa, Alexander (2010-05-25)A system for inventorying and monitoring forests and tree plantings is indispensable for a proper management of this perennial vegetation. In the mid 1990s, the Government of Uzbekistan (GoU) launched various nationwide ... -
Potential of conservation agriculture for irrigated cotton and winter wheat production in Khorezm, Aral Sea Basin
Tursunov, Mehriddin (2009-02-06)Intensive tillage of soils leads to their slow but steady degradation. Therefore, scientists and farmers have been turning their attention to a more sustainable development in agriculture based on reduced tillage. Zero and ... -
Role of termites for the distribution patterns of carbon and phosphorus fractions and the genesis of tropical soils, Brazil
Rückamp, Daniel (2012-07-27)Tropical soil fertility is limited by low phosphorus (P) availability, limited accumulation of organic matter and by advanced stages of pedogenesis. Termites are well-known soil-engineers, which accumulate clay, organic ...