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Author : Gerd Robert Rücker
Publisher : Cuvillier Verlag
Page : 189 pages
File Size : 53,7 Mb
Release : 2005
Category : Slopes (Soil mechanics)
ISBN : 9783865373441
Author : Akmal Akramkhanov
Publisher : Cuvillier Verlag
Page : 139 pages
File Size : 53,9 Mb
Release : 2005
Category : Electronic
ISBN : 9783865376541
Soils of irrigated lands in the Aral Sea Basin are often plagued by high salinity,hampering profitable agriculture on these soils. In this context, the present study has three specific objectives: to identify techniques that enable a rapid estimation of soil salinity, to characterize its spatial distribution and to estimate its spatial distribution based on readily obtainable environmental parametersusing a Neural Network Model Approach. Topsoil salinity was highly variable atshort distances and terrain attributes were the most influential factors. The use of relationships between environmental attributes and soil salinity for upscaling spatial distribution of soil salinity from farm to district level proved to be satisfactory. A possible application is the development of salinity prediction toolsfor farm-level decision making.
Author : Taye Kufa Obso
Publisher : Cuvillier Verlag
Page : 331 pages
File Size : 54,9 Mb
Release : 2006
Category : Electronic
ISBN : 9783867279901
Coffea arabica, one of the economically most important crops worldwide, occurs naturally in the undergrowth of montane rainforests of Ethiopia. The study provides the first detailed ecophysiological investigations of wild coffee populations. It demonstrates the inter- and intra-regional variability in phenotypic and hydrological characteristics of wild coffee. The results reveal very different strategies of wild coffee seedlings for coping with drought stress. The ecophysiological diversity shows the importance of Ethiopian wild coffee populations as gene pools for future breeding programs, and underlines the need for an in-situ conservation strategy. The study includes recommendations for coffee forest management and the use of wild arabica coffee in Ethiopia.
Author : Ashabul Anhar
Publisher : Cuvillier Verlag
Page : 131 pages
File Size : 49,6 Mb
Release : 2005
Category : Electronic
ISBN : 9783865374738
Author : Carlos Javier Puig
Publisher : Cuvillier Verlag
Page : 181 pages
File Size : 40,7 Mb
Release : 2005
Category : Electronic
ISBN : 9783865376947
Author : Nathaniel Kwamina Howard
Publisher : Cuvillier Verlag
Page : 175 pages
File Size : 53,9 Mb
Release : 2005
Category : Electronic
ISBN : 9783865376534
Author : Syahrinudin
Publisher : Cuvillier Verlag
Page : 128 pages
File Size : 54,6 Mb
Release : 2005
Category : Carbon sequestration
ISBN : 9783865374813
Plant biomass represents a sink for atmospheric carbon dioxide, which is one of the most important greenhouse gases and which is assumed to contribute more than half of the global warming. Establishing tree plantations or perennial crops on degraded land is an effective way to reduce atmospheric carbon by building up terrestrial carbon stocks, not only in the living biomass, but also in the soil. By converting Imperata cylindrica grassland into tree plantations (Acacia mangium or oil palm), aboveground biomass carbon can be increased about 20-fold and below ground biomass carbon up to 8-fold, while soil carbon can almost be doubled.
Author : Damaris Achieng Odeny
Publisher : Cuvillier Verlag
Page : 115 pages
File Size : 49,7 Mb
Release : 2006
Category : Electronic
ISBN : 9783867279918
Author : Kassahun Tesfaye Geletu
Publisher : Cuvillier Verlag
Page : 160 pages
File Size : 42,9 Mb
Release : 2006
Category : Coffee
ISBN : 9783867279864
Author : Lulseged Tamene Desta
Publisher : Cuvillier Verlag
Page : 219 pages
File Size : 51,7 Mb
Release : 2005
Category : Reservoir sedimentation
ISBN : 9783865376381
Author : Maria Teresa Almanza Fandiño
Publisher : Cuvillier Verlag
Page : 131 pages
File Size : 41,7 Mb
Release : 2007
Category : Electronic
ISBN : 9783867271875
Solanum quitoense (Lulo) from the northern Andes is a fruit with an attractive taste. It has a high export potential but its production is hampered by insufficient pollination. Studies on the reproductive system of Lulo revealed that, due to their poricidal anthers, the flowers need pollinators for self- and cross-pollination. Pollination by native bumblebees significantly increases fruit set and quality. Experiments show that colonies of Bombus atratus can be reared in captivity and used in Lulo fields for providing increased pollination services. Modeling based on data on colony development reveal larva/workers ratio and the supply of pollen as main parameters for improving the rearing method.
Author : Barnabas Akurigo Amisigo
Publisher : Cuvillier Verlag
Page : 199 pages
File Size : 41,6 Mb
Release : 2005
Category : Electronic
ISBN : 9783865377012
Author : Bao-Le Quang
Publisher : Cuvillier Verlag
Page : 305 pages
File Size : 53,9 Mb
Release : 2005
Category : Electronic
ISBN : 9783865376275
Author : Feyera Senbeta Wakjira
Publisher : Unknown
Page : 166 pages
File Size : 41,6 Mb
Release : 2006
Category : Agricultural systems
ISBN : CORNELL:31924101519191
Author : American Society of Agronomy,American Society of Agronomy. Meeting
Publisher : Unknown
Page : 518 pages
File Size : 49,7 Mb
Release : 2000
Category : Agriculture
ISBN : WISC:89066969775
