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Agriculture in Urban Planning Agriculture in Urban Planning Generating Livelihoods and Food Security Edited by Mark Redwood International Development Research Centre <http://www.idrc.ca/openebooks/427-7/> First published in the UK and USA in 2009 by Earthscan and the International Development Research Centre (IDRC) Copyright International Development Research Centre 2009 All rights reserved ISBN: 978-1-84407-668-0 IDRC publishes an e-book edition (ISBN: 978-1-55250-427-7) For further information: International Development Research Centre PO Box 8500 Ottawa, ON K1G 3H9, Canada info@xxxxxxx/www.idrc.ca Typeset by 4word Ltd, Bristol Printed and bound in the UK by Cromwell Press, Trowbridge Cover design by Yvonne Booth For a full list of publications, please contact: Earthscan Dunstan House 14a St Cross St London EC1N 8XA, UK Tel: + 44 (0)20 7841 1930 Fax: + 44 (0)20 7242 1474 Email: earthinfo@xxxxxxxxxxxxxxx Web: www.earthscan.co.uk 22883 Quicksilver Drive, Sterling, VA 20166-2012, USAEarthscan publishes in association with the International Institute for Environment and Development
A catalogue record for this book is available from the British Library Library of Congress Cataloging-in-Publication Data Agriculture in urban planning: generating livelihoods and food security edited by Mark Redwood Includes bibliographical references. ISBN 978-1-84407-668-0 (hardback)1. Urban agricultureDeveloping countries. 2. Sustainable developmentDeveloping
countries. I. Redwood, Mark. S494.5U72A42 2009 630.91732dc22 Contents List of Figures, Tables and Boxes ix Foreword xiii Acknowledgements xiv List of Acronyms and Abbreviations xvi Introduction 1 Mark Redwood Enter AGROPOLIS 2 The Rise of Cities and City Farming 3 Overview of this Book 8 Conclusion 18 References 19 1 Household Food Security Among Urban Farmers in Nairobi, Kenya 21 Eunice Wambui Njogu Introduction 21 Methodology 23 Food Security 28 Relationships between Variables 30 Changes in Agriculture and Livestock Extension Services 31 Conclusion and Recommendations 32 Acknowledgements 33 Notes 33 References 332 Urban Compost: A Socio-economic and Agronomic Evaluation in Kumasi, Ghana
35 Nikita S. Eriksen-Hamel and George Danso Introduction 35 Objectives 36 Methodology 37 Research Findings 40 Conclusions and Recommendations 46 Acknowledgements 46 Note 47 References 47 3 Urban Agriculture as a Livelihood Strategy in Lima, Peru 49 Luis Maldonado Villavicencio Introduction 49 Methodology 50 Conceptual Framework 51 Research Findings 53 Conclusion 70 Acknowledgements 70 Note 70 References 704 The Social and Economic Implications of Urban Agriculture on Food Security in Harare, Zimbabwe
73 Charity Mutonodzo Introduction 73 Objectives and Hypotheses 74 Methods 75 Research Findings 80 Conclusions 88 Acknowledgements 89 Note 89 References 89 5 Urban Agriculture and Food Security in Lilongwe and Blantyre, Malawi 91 David Dalison Mkwambisi Introduction 91 Literature, Concepts and Objectives 92 Research Methodology 93 Results 95 Discussion 99 Conclusion and Policy Recommendations 100 Acknowledgements 101 Notes 101 References 1016 An Analysis of the Quality of Wastewater Used to Irrigate Vegetables in Accra, Kumasi and Tamale, Ghana
105 Philip Amoah Introduction 105 Key Concepts 106 Methods 107 Results and Discussion 111 Conclusions and Recommendations 120 Acknowledgements 121 Notes 121 References 1227 Water Contamination and its Impact on Vegetable Production in the Rac River, Peru
125 Henry Juarez Introduction 125 Methods 126 Research Findings and Discussions 132 Conclusions and Recommendations 141 Acknowledgements 143 Notes 143 References 143 8 Wastewater Use and Urban Agriculture in Kinshasa, DR Congo 147 Kifuani Kia Mayeko Introduction 147 Concepts, Objectives and Hypothesis 148 Methods 149 Research Findings 152 Conclusion and Recommendations 162 Acknowledgements 163 Notes 163 References 164 9 The Health Impacts of Farming on Producers in Rosario, Argentina 167 Patricia Silvia Propersi Introduction 167 Objectives and Hypotheses 168 Methods 169 Research Findings 171 Conclusion and Recommendations 177 Acknowledgements 178 Note 179 References 17910 Using Participatory Education and Action Research for Health Risk Reduction Amongst Farmers in Dakar, Senegal
181 Nita Chaudhuri Introduction 181 Objectives and Hypothesis 184 Methods 184 Research Findings 189 Conclusions 197 Acknowledgements 198 Notes 198 References 19811 Complex Ecologies and City Spaces: SocialEcological Networks of Urban Agriculture
201 Laura J. Shillington Introduction 201 Objectives, Hypotheses and Concepts 202 Methodology 203 Research Findings 205 Conclusion and Recommendations 212 Acknowledgements 213 Notes 213 References 21412 Urban Agriculture and Physical Planning: A Case Study of Zaria, Nigeria
217 Chuo Adamu Nsangu Introduction 217 Background, Objectives and Hypothesis 218 Methodology 220 Research Findings 220 Recommendations and Conclusions 231 Acknowledgements 233 Note 234 References 234 13 Conclusion 235 Mark Redwood References 242 Index 243 List of Figures and Tables FIGURES1 Urban growth rates compared with the expansion of informal settlements in African cities
4 1.1 The (PANS) Triple-A approach 231.2 Nutrition status of children from households involved in the intervention
30 2.1 WTP for compost at different distances from the compost station 43 3.1 Location of the field research 51 3.2 The sustainable livelihoods systems framework 52 3.3 Urban agriculture in Carapongo 54 3.4 Carapongo land use change: 20022006 55 3.5 Livestock farmer in Carapongo 56 3.6 Different ways of transporting food from the field to urban market 57 3.7 Using traditional tools for soil management 58 3.8 Families participating in agricultural tasks 59 3.9 Women play a central role in urban agriculture in Carapongo 644.1 Average share of total budget allocated to food, by expenditure quartile
84 4.2 Mapping of views of policy makers and practitioners on UA 86 4.3 Trends in maize intake via the Grain Marketing Board 88 5.1 Modified map of Malawi showing Blantyre and Lilongwe 945.2 Average cereal equivalents (expressed in kilograms per member of each household per year) from UA
965.3 The relationship between education and UA to total households food bundle
97 5.4 Main agricultural constraints identified by urban farmers (n = 330) 985.5 Average cereal yield (kilograms per hectare) between low-income (n = 120) and high-income (n = 210) households in urban Malawi
985.6 Average cereal yield (kilograms per hectare) between female-headed (n = 87) and male-headed (n = 243) households in urban Malawi
996.1 Agro-ecological map of Ghana showing the three urban study areas of Tamale, Kumasi and Accra, with details for Kumasi and Accra
1086.2 Fecal coliform contamination levels of irrigation water used during the study period (piped water was excluded because no fecal coliforms were detected during the study period)
1146.3 Fecal coliform counts at different entry points on the productionconsumption pathway for irrigated lettuce using water from (A) wells, (B) streams and (C) piped water in Kumasi
116 6.4 Farmer irrigating with lowered watering can 119 6.5 Seller displaying vegetables in the market 1207.1 Sampling location of water quality in the Rac River basin conducted by SEDAPAL (white dots) and DIGESA (black dots)
1277.2 Urban and peri-urban agriculture in and around Lima (agricultural plots shown in black, urban areas in grey) and three research locations: Carapongo, Niever and Huachipa
1297.3 Annual means for As, Cd, Cr, Pb and FC in the Rac River, where the vertical lines represent the standard error of the mean
1337.4 Spatial patterns of water contamination with As, Pb and FC in the Rac River for the year of greatest contamination (2000 or 2001) and the most recent year (2004)
1347.5 As and Pb in the upper part of the basin from 1997 to 2004, where vertical lines represent the standard error of the mean
135 7.6 Location of mines and populated places in the Rac River basin 1367.7 Total heavy metals in soils. Vertical lines represent the standard error of the mean
1387.8 Available heavy metals in soils. Vertical lines represent the standard error of the mean
1397.9 Total heavy metals in vegetables. Vertical lines represent the standard error of the mean
1407.10 Levels of FC in vegetables in selected areas: Huachipa, Niever and Carapongo
141 7.11 Effect of washing vegetables in the irrigation canals 1418.1 Actor interactions in a sustainable development and good governance context
163 9.1 Distribution of horticultural farms by area 172 9.2 Access to services where workers reside 174 10.1 The Niayes area of Dakar: Main soil types 182 10.2 Cross-section through the Niayes Zone in Pikine 183 10.3 Focus group meetings with farmers in Pikine, 2005 18710.4 Methods of data collection, participatory education and action research
188 10.5 Map produced by Pikine farmers, 2005 195 10.6 Maps produced by farmers, 2006 196 10.7 Maps produced by farmers, 2006 196 11.1 Map of Managua showing location of Barrio San Augusto 204 11.2 Map of patio in San Augusto 209 12.1 Distribution of farm sizes and techniques in Zarias urban area 221 12.2 Urban land use in Zaria (percentage) 22412.3 Coping mechanisms regarding strategies adopted by urban farmers in Zaria as influenced by physical-planning control
23113.1 The growth of peer-reviewed articles with UA in their title, 19852008
237 TABLES1 Percentage of income spent on food by low-income residents in selected cities
6 1.1 Dietary diversity based on RDA before and after intervention 28 1.2 Nutrient intakes based on RDA before and after intervention 29 1.3 Nutrition knowledge and nutrient intakes 31 1.4 t-test for differences after intervention 31 2.1 Chemical characteristics of soil fertility amendments 38 2.2 Farmers willingness-to-pay for 50 kg of compost 412.3 Probit model of explanatory variables of farmers WTP for compost in Kumasi
422.4 Yield of lettuce following application of the compost and poultry manure
45 3.1 Perception of poverty 60 3.2 Income range and per capita income 603.3 Primary responsibility for agricultural tasks of men and women in Carapongo (n = 125)
63 3.4 Access to and control over resources in Carapongo 64 3.5 Land tenure classified by gender and reported by the household head 65 3.6 Decision-making matrix in Carapongo households 67 4.1 Distribution of sampled households by suburb name and type 77 4.2 Household energy requirements by age and gender 794.3 Descriptive characteristics of surveyed Harare households by the gender of the household head and by participation in UA
80 4.4 Factors associated with practising UA (logistic regression model) 81 4.5 Comparing UA and food security 834.6 Factors associated with adult diet and energy adequacy (linear regression model)
85 5.1 Household characteristics in urban Malawi 945.2 Main livelihoods sources as identified by household heads in urban Malawi
966.1 Ranges of total and fecal coliform population on selected vegetables
111 6.2 Pesticide residue detection and concentrations on lettuce (n = 60) 1136.3 Mean numbers of helminth eggs in irrigation water from different sources
1156.4 Helminth egg contamination at different entry points along the productionconsumption pathway
1177.1 Water quality index based on Class III stipulated by the Peruvian law for vegetable irrigation and animal consumption
1287.2 The Taiwanese standards for assessment of soils contaminated with heavy metals
131 8.1 Water sampling sites in greater Kinshasa 151 8.2 Daily expenditure per person, 2005 155 8.3 Vegetables grown during the dry and rainy seasons, 2005 157 8.4 Water quality parameters during the rainy (dry) season, 2005 1578.5 Mean concentrations of major and minor fertilizer elements in the irrigation water during the rainy (wet) season, 2005
1598.6 Mean concentrations of heavy metals in the irrigation water during the rainy (dry) season, 2005
160 8.7 Bacteriological quality of irrigation water, 2005 161 8.8 Parameters associated with experimental garden vegetables 162 9.1 Distribution of population in different settlement types 168 9.2 Modal types for the production units 169 9.3 Composition of groups of workers on the quintas 172 9.4 Hours worked on average during the different seasons 175 9.5 Method used to apply pesticides 1759.6 Treatment of containers of chemical products related to owners educational level (percentage)
176 11.1 Categories of networks from mapping process 206 11.2 Total number of plants by category in patios 207 11.3 Species diversity identified by plant type 208 11.4 Distribution of network categories in San Augusto by plant type 211 12.1 Desired farming arrangements in Zaria 222 12.2 Urban land devoted for agriculture in Zaria 225 12.3 Mode of land acquisition for urban agriculture in Zaria 225 12.4 Pattern of land development in Zaria 226 12.5 Proposed urban land uses vs actual land developed in Zaria 227 12.6 Occupational status of urban farmers surveyed in Zaria 22812.7 Distribution of farm produce consumed and sold by urban farmers in Zaria
228 12.8 Effect on farm sizes in Zaria of planning laws and regulations 22912.9 Mean and potential yield estimates of cereals on uncultivated (underutilized) land
230 12.10 Evaluation of stakeholder concerns regarding UA in Zaria 232 Introduction Mark RedwoodUrban agriculture (UA) has long been dismissed as a fringe activity that has no place in cities; however, its potential is beginning to be realized. In fact, UA is about food self reliance: it involves creating work and is a reaction to food insecurity, particularly for the poor. Contrary to what many believe, UA is found in every city, where it is sometimes hidden, sometimes obvious. If one looks carefully, few spaces in a major city are unused. Valuable vacant land rarely sits idle and is often taken over either formally, or informally and made productive. Urban agriculture is a long-established livelihood activity that occurs at all scales, from the small family-held market garden to the large agri-business located on the fringe of a city. It supplies food to the city and income to those who farm. Above all, UA is making an important contribution to food security for those who do not have easy access. In essence, UA is the true realization of the statement that necessity is the mother of invention.
In the 21st century, food comes with baggage. Mechanized farming and the increased yields associated with fertilizer and pesticide usage have reduced employment. Accordingly, farmers are relocating to cities in search of work. As wealth spreads, appetites change, and food is travelling further and further from where it is produced as people demand specialty goods. While food choices increase for the wealthy few, others are exposed to nutrition and health risks because of their lack of secure food sources. Market changes associated with biofuels, high oil prices and inflation are raising the cost of basic goods, which leads people to seek alternative ways to secure their food.
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