Description: Das Projekt "Studies on the Ecophysiology of Locally Suitable Cultivars of Food Crops and Soilfertility monitoring in the semi-arid areas of Southeast Kenya" wird/wurde gefördert durch: VolkswagenStiftung. Es wird/wurde ausgeführt durch: Universität Trier, Abteilung Kultur- und Regionalgeographie.Using scientifically neglected 'traditional crops' grown in the marginal areas of SE-Kenya (i.e. Kathika beans, Phaseolus vulgaris L; Kinyanya and Tohono O'odham maize, Zea mays L, and green grams Vigna radiata L), the major objectives of this study will be: 1) To screen different strains of rhizobia for the mentioned legumes, with particular reference to their viability and effectiveness of N2-fixation unter semi-arid conditions of SE-Kenya. 2) To investigate the possibility of nitrogen fixation through host-specific rhizobial strains in maize-legume cropping systems in SE. Kenya. Special attention will be paid to early detection of infection by straining callose in the nodules. 3) To quantify the sources of N in maize-legume cropping systems in the marginal areas of SE-Kenya for a minimum of six growing seasons. The crop production response to N fertilizer will also be investigated. 4) To quantify losses of N in the plant materials removed at final harvest in maize-legume cropping systems in SE-Kenya. 5) To monitor soil nutrient mineral changes (i.e. nitrogen, potassium and phosphorus) in maize-legume cropping systems in the marginal areas of SE-Kenya. 6) To monitor soil microbiological activities, e.g. enzyme activities (DMSO reductase; alc phosphatase). 7) To test the influence of rock powder on soil fertility. Consequently, information on the long-term productivity of legume-cereal cropping systems in the semi-arid areas of Kenya may be obtained from the data under objectives 1-7. 8) To systematically observe the phenology of the 'traditional crops' and to estimate their water requirements. The latter will be achieved through controlled laboratory experiments at the climate growth chamber of the University Trier, Germany. Through these experiments, the crop KC-values at different stages of growth will be derived. Ecophysiological and phenological studies as well as yield measurements in field experiments will be obtained. Further, the response of these crops to thermic and hygric water stress conditions will be observed and documented. 9) To apply the experimentally obtained information in spatially differentiated landuse patterns for planing purposes. The aim here will be to assess the spatial yield potentials of these 'traditional crops' in the marginal areas of SE-Kenya by means of simulation modelling and GIS. The experiments are performed as on-station (KARI/NRRC/ICRISAT, Kiboko, Kenya) and laboratory experiments (climate growth chamber, University of Trier, Germany)
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Getreide ? Kalium ? Mais ? Ökophysiologie ? Mikrobiologie ? Bodenbiologie ? Leguminosen ? Phosphor ? Stickstoff ? Bodenfruchtbarkeit ? Bodenmikroorganismen ? Bodennutzung ? Enzym ? Geografisches Informationssystem ? Pflanzenbestand ? Pflanzenproduktion ? Stickstoffbilanz ? Stress ? Wasserstress ? Vegetationsperiode ? Flächennutzung ? Phänologie ? Simulation ? Stickstofffixierung ? Studie ? Daten ? Naturfaser ? Modellierung ? Mineral ? Freilandversuch ? Produktivität ? Infektion ? Landwirtschaft ? Wasserbedarf ? Lebensmittelüberwachung ? Nachhaltige Bewirtschaftung ? Enzymaktivitaeten ? Enzymaktivität ? Ertragssimulationsmodelle ? Suedost- Kenya ? Trockenangepasste-Kulturpflanzen ? Echtzeitvorhersage ?
Region: Rheinland-Pfalz
Bounding boxes: 7.5° .. 7.5° x 49.66667° .. 49.66667°
License: cc-by-nc-nd/4.0
Language: Englisch/English
Time ranges: 1997-01-01 - 1999-12-31
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