Browsing by Author "Bagamba, F."

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    Assessment of allocative efficiency of smallholder tea farmers in south-western Uganda
    (African Journals Online (AJOL), 2022-08-18) Kishaija, N.; Bagamba, F.; Aheisibwe, A.R.
    Tea ranks third after coffee and fish in terms of export value in Uganda’s crop sector. Smallholder productivity and efficiency in Uganda remains a paradox, especially in perennial crops, with past research presenting mixed results on allocative efficiency. The objective of this study was to determine allocative efficiency and its influencing factors among smallholder tea farmers in western-Uganda. A cross-sectional survey dataset was collected from a random sample of 170 tea farmers from Kabale and Kanungu districts in south-western Uganda. The study employed a Stochastic Frontier Approach and the Value of Marginal Product Approach in determining the input elasticities and allocative efficiency levels respectively. Results showed that average allocative efficiency scorers for land, fertiliser, labour and herbicides were 11.17, 1.68, 3.08 and 4.43, respectively; indicating under-utilisation of the inputs. Ordinary Least Squares estimates indicated that allocative efficiency score of fertiliser was positively related to farm size, herbicide type and extension visits. The allocative efficiency score for herbicides was positively influenced by extension access and herbicide type. Similarly, the allocative efficiency score for land was positively influenced by extension access while that of labour was positively influenced by farm size. The results indicate that increasing the scale of tea production in the region is likely to improve productivity and profitability since the average allocative efficiency scores were greater than unity.
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    Efficiency and possibilities for Arabica coffee-banana management systems switching in the Mt. Elgon landscape of Uganda
    (African Crop Science Journal, 2020) Sebatta, C.; Mugisha, J.; Bagamba, F.; Nuppenau, E.A.; Domptail, S.E.; Ijala, A.; Karungi, J.
    Sustainably intensifying rural agricultural systems is now a development goal that has gained momentum in the recent decades due to a rapidly growing population and feeds directly into the Sustainable Development Goals of ending poverty and hunger. By 2050, the world will be inhabited by 10 billion people, 68% of whom will be city dwellers which will pose serious food and livelihoods security threats to millions of people, especially in Sub-Saharan Africa. The objective of this study was to analyse technical efficiency of four production systems in Arabica coffee-banana farming system of the Mt. Elgon in Uganda and assesses possibilities for switching from one system to another. The study was motivated by the notion that smallholder farmers do not easily adopt new systems because of opportunity costs related to input substitution, input and/or efficiency reduction and systems redesigning. We estimated a production function to measure technical efficiency and ordered the intensification pathways to create a Technical Efficiency (TE) gradient. An ordered logit model was then estimated to determine the factors influencing farmers to switch among systems, by adopting one or more following a TE gradient. Results showed that farmers produced 50% of the maximum possible Arabica coffee output, indicating huge gaps between actual and potential yields. Use of fertiliser for the lowest efficiency. Low-input-low-output pathway and improved coffee genotypes, manure and labour intensification for the higher technical efficiency clusters such as conventional and mild agroecological would also significantly increase the chances of switching from low to highly efficient and sustainable Arabica coffee production systems in the Mt. Elgon watershed of Uganda.
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    The changing spread dynamics of banana Xanthomonas wilt (BXW) in Uganda
    (African Journals Online (AJOL), 2012) Kubiriba, J.; Bagamba, F.; Rockfeller, E.; Tushemereirwe, W.K.
    Banana Xanthomonas wilt still remains a serious threat to banana production in Uganda. Although the desired long term control strategy would have been use of resistance, no sources of resistance have been found. Further the transgenic resistance under development will only be deployed in the long run. In the meantime, cultural control, remains the driver of BXW management strategy in Uganda. This requires continuous effort by the farmers and other stakeholders. It is imperative that disease spread information be continuously updated to sustainably control BXW. The study was conducted to update the status of BXWto inform the continuous refinement of the control strategy of BXW control in across all the epidemics zones in Uganda. BXW incidence increased from about 1% between 2005 and 2006 to about 3.8% in 2010 in the threatened areas. The BXW prevalence increased from below 5 to 34.4% in the same period. Meanwhile, the incidence and prevalence of BXW in the endemic areas reduced to below 10% and about 40%, respectively, from over 50% between 2006 and 2010. The high prevalence of BXW indicates that BXW is widely spread but the low incidence shows that BXW is at initial linear phases of disease epidemic across all zones. There are also a few clusters of infection with infected fields at various phases of the disease progress curve. This suggests that it is no longer feasible to classify Uganda’s banana growing areas in different epidemic zones. Consequently the strategies to control BXW across the zone are similar.