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Ökologische Mutterkuhhaltung in Deutschland
(Bio Austria, 2004)
Die Untersuchung bestand darin, Kenndaten zur ökologischen Mutterkuhhaltung in Deutschland zu erfassen. In einem Forschungsprojekt im Rahmen des Bundesprogramms ökologischer Landbau (Förderung durch die BLE, Bonn; vgl. HÖRNING et al. 2004) wurden Fragebögen von 388 Bio-Betrieben mit Mutterkuhhaltung ausgewertet und darüber hinaus 27 Betriebe aufgesucht zur Erhebung genauerer Daten.
Aufsatz
Legume rotation effects on early growth and rhizosphere microbiology of sorghum in West African soils
(2004)
Cereal yield increases in legume rotations on west African soils were the subject of much recent research aiming at the development of more productive cropping systems for the mainly subsistence-oriented agriculture in this region. However, little has been done to elucidate the possible contribution of soil microbiological factors to these rotation effects. Therefore a pot trial was conducted using legume rotation and continuous cereal soils each from one site in Burkina Faso and two sites in Togo where cropping ...
Aufsatz
Field measurements of the CO2 evolution rate under different crops during an irrigation cycle in a mountain oasis of Oman
(2004)
For millennia oasis agriculture has been the backbone of rural livelihood in the desertic Sultanate of Oman. However, little is known about the functioning of these oasis systems, in particular with respect to the C turnover. The objective was to determine the effects of crop, i.e. alfalfa, wheat and bare fallow on the CO2 evolution rate during an irrigation cycle in relation to changes in soil water content and soil temperature. The gravimetric soil water content decreased from initially 24% to approximately 16% ...
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Emmer (Triticum dicoccon Schrank) in Oman
(2004)
Emmer (Triticum dicoccon ) was collected recently in northern Oman. The material was analyzed morphologically and phenologically. It belongs to the Asiatic emmers (subsp. asiaticum) and not to the Ethiopian ones (subsp. abyssinicum), distributed in Ethiopia and Yemen, as originally expected. The determination of the material resulted in var. haussknechtianum and var. aeruginosum.
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Settlement history of a mountain oasis in Northern Oman
(2004)
To unravel the settlement history of oases in northern Oman, data on topography, the agricultural setting, water and soil parameters and archaeological findings were collected in the Wadi Bani Awf with its head oasis Balad Seet. Data collection lasted from April 2000 to April 2003 and was based on the establishment of a 3D-georeferenced map of the oasis comprising all its major infrastructural and agronomic features. At today's Balad Seet, a total of 8.8 ha are planted to 2,800 date palms and 4.6 ha are divided into ...
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Organic inputs and farmers' management strategies in millet fields of western Niger
(2004)
Research on soil fertility management in sub-Saharan Africa was criticized lately for largely ignoring farmers’ management strategies and the underlying principles. To fill this gap of knowledge, detailed interviews were conducted with 108 farm households about their rationale in managing the soil fertility of 307 individual fields in the agro-pastoral village territory of Chikal in western Niger. To amplify the farmers’ information on manuring and corralling practices, repeated measurements of applied amounts of ...
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Effects of post-harvest treatments on the carbohydrate composition of yacon roots in the Peruvian Andes
(2004)
Yacon (Smallanthus sonchifolius [Poepp. & Endl.] H. Robinson) is an under-exploited native root crop of the Andes, which stores oligofructans (fructo-oligosaccharides, FOS) as its main component of dry matter (DM). FOS are of increasing economic interest because of their low caloric value in human diets and bifidogenic benefits on colon health. Two on-farm experiments were conducted to: (i) determine the effect of shaded, short-term storage at 1990 and 2930 m a.s.l. in the Andean highlands; and (ii) address the effects ...
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Use of digital camera to assess nitrogen status of winter wheat in the Northern China Plain
(2004)
The most widely used methods to assess the nitrogen (N) status of winter wheat (Triticum aestivum L.) are the determination of plant total N by combustion, the testing of nitrate in the leaf tissue and the use of SPAD readings. However, due to their labor requirements or high costs these methods can hardly be applied to the huge wheat growing areas of the Northern China Plain. This study therefore examined an alternative method to measure the N status of wheat by using a digital camera to record the visible green ...