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43rd Annual Report - Commonwealth Scholarship Commission in ...

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SPLIT-SITE DOCTORATESSplit-Site Doctorates were<strong>in</strong>troduced <strong>in</strong> 1998. Theyallow students work<strong>in</strong>gtowards a PhD <strong>in</strong>develop<strong>in</strong>g countryuniversities to spend up toone year <strong>in</strong> the UnitedK<strong>in</strong>gdom, as part of theirstudies. Follow<strong>in</strong>g afavourable review <strong>in</strong> 2001,the programme hasexpanded. 30 newawards were made <strong>in</strong>2002.I was particularlyimpressed with thisstudent, who is clearly avery <strong>in</strong>telligent, talentedand mature young ladywith the potential tobecome a very successfulscientist. She would, <strong>in</strong>my op<strong>in</strong>ion, be aconsiderable asset to anyresearch groupUniversity of LeicesterHe has ga<strong>in</strong>ed first handexperience of a number oftechniques that were new tohim, and made significantstrides towards thecompletion of his PhD. Hiswork will make a significantcontribution to ourunderstand<strong>in</strong>g ofenvironmental change.University of LiverpoolAll of our award categories seek to produce outcomes of direct relevance to thecandidates’ home countries. Split-site awards, however, often have an additional value<strong>in</strong> strengthen<strong>in</strong>g the long-term collaboration between the home and host universities.An example of this can be found <strong>in</strong> the work of Cate Muthuri, who spent a year at theUniversity of Nott<strong>in</strong>gham, as part of her doctoral thesis at Jomo Kenyatta University,Kenya.The rapidly <strong>in</strong>creas<strong>in</strong>g population <strong>in</strong> Central Kenya has led to considerable humanmigration to low potential, semi-arid areas. This problem is particularly acute <strong>in</strong> NaroMoru District on the leeward side of Mount Kenya, an area characterised by lowra<strong>in</strong>fall, poor vegetation cover, high evaporation rates and strong w<strong>in</strong>ds. Illegalabstraction of water from rivers to support the expansion of irrigated crop productionhas led to a serious decl<strong>in</strong>e of stream flow. Attempts to reduce soil evaporation andimprove food production by apply<strong>in</strong>g crop residues are restricted by the limitedavailability of these materials.The <strong>in</strong>troduction of Grevillea robustatrees <strong>in</strong>to this area by smallholdershas <strong>in</strong>creased the risk of crop failureand caused further depletion of scarcewater resources. Other tree specieswith lower water requirements needto be tested to provide a susta<strong>in</strong>ablewater management strategy for thearea. Cate’s PhD programme isexam<strong>in</strong><strong>in</strong>g the productivity, tree/crop<strong>in</strong>teractions and water use ofagroforestry systems at Naro Moruand a second research site at JomoCate Muthuri and colleagues with Professor Black dur<strong>in</strong>gfieldwork for the projectKenyatta University <strong>in</strong> Thika District near Nairobi. The two species be<strong>in</strong>g exam<strong>in</strong>edare Alnus acum<strong>in</strong>ata and Paulownia fortunei, both of which are adapted to the cold,semi-arid highlands, although no <strong>in</strong>formation is available concern<strong>in</strong>g their water useand compatibility with crops <strong>in</strong> this region. The work seeks to establish whether us<strong>in</strong>gSua deciduous trees will reduce demand for limited water supplies. It seeks not onlyto establish growth rates and compatibility of the three species, but to predict theconsequences of their <strong>in</strong>tegration, us<strong>in</strong>g complex simulation models.Initial results are encourag<strong>in</strong>g. They suggest that Alnus and Paulownia have growthrates comparable to Grevillea and are suitable for the experimental sites, thus widen<strong>in</strong>gfarmers’ choice. Physiological studies – the first of their k<strong>in</strong>d <strong>in</strong> Kenya – have beenundertaken to establish responses to limited soil moisture, and it appears that all threespecies have reasonably high water use efficiency. It also appears that the growth ofmaize <strong>in</strong> agroforestry systems is enhanced by Alnus.Whilst Cate’s research rema<strong>in</strong>s rooted <strong>in</strong> local needs, Cate considers that her time <strong>in</strong>Nott<strong>in</strong>gham has been <strong>in</strong>valuable. In addition to facilitat<strong>in</strong>g a comprehensive literaturesearch, she has also been able to analyse chlorophyll and nitrogen concentrations us<strong>in</strong>gmodern techniques that were unavailable <strong>in</strong> Kenya. A study visit to Essex Universityalso provided <strong>in</strong>valuable hands-on experience of the diverse applications andma<strong>in</strong>tenance of PP Systems Infrared gas analysers for measur<strong>in</strong>g photosynthesis andother gas exchange parameters. Her fieldwork allowance helped fund a visit to theIndonesian station of the International Centre for Research <strong>in</strong> Agroforestry (ICRAF),where work was undertaken to adapt the WaNuLCAS simulation model to specificproject data.Recognis<strong>in</strong>g the potential for further work Professor Col<strong>in</strong> Black, Cate’s supervisor atNott<strong>in</strong>gham, visited Kenya <strong>in</strong> July 2002 to review the progress of her fieldwork. Hevisited both field sites and took part <strong>in</strong> discussions with the Kenyan supervisors,Professor Ch<strong>in</strong> Ong (ICRAF) and Drs. Victoria Ngumi and Bancy Mati from JomoKenyatta University. The challenge is now for those <strong>in</strong>volved <strong>in</strong> the collaboration tostrengthen and broaden these activities by build<strong>in</strong>g on the current work.CSC <strong>Annual</strong> <strong>Report</strong> page 8

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