Ndungu, John Mwaniki: Sustainability performance of organic and conventional farming systems in Kenya: Murang'a, Kirinyaga and Machakos Counties. - Bonn, 2022. - Dissertation, Rheinische Friedrich-Wilhelms-Universität Bonn.
Online-Ausgabe in bonndoc: https://nbn-resolving.org/urn:nbn:de:hbz:5-64939
urn: https://nbn-resolving.org/urn:nbn:de:hbz:5-64939,
author = {{John Mwaniki Ndungu}},
title = {Sustainability performance of organic and conventional farming systems in Kenya: Murang'a, Kirinyaga and Machakos Counties},
school = {Rheinische Friedrich-Wilhelms-Universität Bonn},
year = 2022,
month = mar,

note = {The concept of sustainable farming systems focuses on the need to develop techniques and practices that have positive effects on social outcomes, the environment, and food productivity. In Africa, there are limited empirical studies that compare agronomic practices on organic and non-organic farms. This comparative study assesses the productivity and profitability of organic and conventional farming systems, their sustainability performance, and farmer perceptions on sustainability gaps for improved intervention in three counties of Kenya. Empirical data collected from 849 farms was used to perform i) a productivity analysis to assess the yield and profits of ten common crops; ii) and an assessment, using an indicator-based multi-criteria approach, of sustainability performance comparing organic and conventional farming systems at the farm and county levels. Thirdly, farmer feedback workshops and in-depth discussions analyzed farmers’ views on the challenges and options available to improve their sustainability performance in the areas in which they were found to have critical sustainability scores. The yields, costs, revenues and profits of twenty crops evaluated and some crops grown under organic farming were found to be better than those under conventional farming. Using a propensity score matching the effect on yields for four crops compared by using the nearest neighbor, kernel matching and radius matching showed that there was a significant increase in yields in organic farming systems. Organic farming significantly increased average yields in four crops: common beans (increased by 2,360kg/ha) macadamia nuts (increased by 4,937kg/ha), coffee (increased by 3,235kg/ha) and man-go (increased by 4,645kg/ha). The average profits of field/common beans increased by Ksh. 100,398/ha or USD 994/ha (equivalent to an increase of 35.3%). Similarly, the profits for macadamia nuts increased by Ksh. 531,524/ha or USD 5,263/ha (equivalent to a 44.4% increase).
The sustainability assessment found that organic farms performed significantly better than conventional farms with regard to the sustainability dimensions of environmental integrity, economic resilience and governance. Among the sustainability sub-themes and indicators, some scores were similar for both organic and conventional farming systems. The study also identified sustainability challenges among the smallholder farms that need to be addressed. The identified constraints (limitations to technical and physical inputs, market-related challenges, agronomic skills and limited institutional sup-port) in the sustainability assessment can be addressed through regular training and extension support for farmers. Since organic farming systems have significant positive impacts on the yield and profitability of some crops, these should be promoted among small-scale producers as a way of improving their livelihoods. It is strongly recommended that the government creates; using benefits and incentives, an enabling environment for organic farming as such policies will encourage more farmers to join organic farming groups and motivate already existing members to continue. The use of knowledge dissemination, product diversification, and value addition using agricultural technologies should be adopted to enhance organic farming systems.},

url = {https://hdl.handle.net/20.500.11811/9682}

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