Raising the Stakes: Cassava Seed Networks at Multiple Scales in Cambodia and Vietnam
Cassava is one of the most important annual crops in Southeast Asia, and faces increasing seed borne pest and disease pressures. Despite this, cassava seed systems have received scant research attention. In a first analysis of Vietnamese and Cambodian cassava seed systems, we characterized existing...
Main Authors: | , , , , , , , , , , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Frontiers Media S.A.
2018-11-01
|
Series: | Frontiers in Sustainable Food Systems |
Subjects: | |
Online Access: | https://www.frontiersin.org/article/10.3389/fsufs.2018.00073/full |
id |
doaj-2ed8f29b930241d1893f86ca9a399778 |
---|---|
record_format |
Article |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Erik Delaquis Kelsey F. Andersen Nami Minato Thuy Thi Le Cu Maria Eleanor Karssenberg Sophearith Sok Kris A. G. Wyckhuys Kris A. G. Wyckhuys Kris A. G. Wyckhuys Jonathan C. Newby Dharani Dhar Burra Pao Srean Iv Phirun Niem Duc Le Nhan Thi Pham Karen A. Garrett Conny J. M. Almekinders Paul C. Struik Stef de Haan |
spellingShingle |
Erik Delaquis Kelsey F. Andersen Nami Minato Thuy Thi Le Cu Maria Eleanor Karssenberg Sophearith Sok Kris A. G. Wyckhuys Kris A. G. Wyckhuys Kris A. G. Wyckhuys Jonathan C. Newby Dharani Dhar Burra Pao Srean Iv Phirun Niem Duc Le Nhan Thi Pham Karen A. Garrett Conny J. M. Almekinders Paul C. Struik Stef de Haan Raising the Stakes: Cassava Seed Networks at Multiple Scales in Cambodia and Vietnam Frontiers in Sustainable Food Systems seed systems Manihot esculenta seed flow vegetatively propagated crops network analysis |
author_facet |
Erik Delaquis Kelsey F. Andersen Nami Minato Thuy Thi Le Cu Maria Eleanor Karssenberg Sophearith Sok Kris A. G. Wyckhuys Kris A. G. Wyckhuys Kris A. G. Wyckhuys Jonathan C. Newby Dharani Dhar Burra Pao Srean Iv Phirun Niem Duc Le Nhan Thi Pham Karen A. Garrett Conny J. M. Almekinders Paul C. Struik Stef de Haan |
author_sort |
Erik Delaquis |
title |
Raising the Stakes: Cassava Seed Networks at Multiple Scales in Cambodia and Vietnam |
title_short |
Raising the Stakes: Cassava Seed Networks at Multiple Scales in Cambodia and Vietnam |
title_full |
Raising the Stakes: Cassava Seed Networks at Multiple Scales in Cambodia and Vietnam |
title_fullStr |
Raising the Stakes: Cassava Seed Networks at Multiple Scales in Cambodia and Vietnam |
title_full_unstemmed |
Raising the Stakes: Cassava Seed Networks at Multiple Scales in Cambodia and Vietnam |
title_sort |
raising the stakes: cassava seed networks at multiple scales in cambodia and vietnam |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Sustainable Food Systems |
issn |
2571-581X |
publishDate |
2018-11-01 |
description |
Cassava is one of the most important annual crops in Southeast Asia, and faces increasing seed borne pest and disease pressures. Despite this, cassava seed systems have received scant research attention. In a first analysis of Vietnamese and Cambodian cassava seed systems, we characterized existing cassava seed systems in 2016–2017 through a farmer survey based approach at both national and community scales, with particular focus on identifying seed system actors, planting material management, exchange mechanisms, geographies, and variety use, and performed a network analysis of detected seed movement at the provincial level. Despite their status as self-organized “informal” networks, the cassava seed systems used by farmers in Vietnam and Cambodia are complex, connected over multiple scales, and include links between geographically distant sites. Cassava planting material was exchanged through farmer seed systems, in which re-use of farm-saved supply and community-level exchanges dominated. At the national level, use of self-saved seed occurred in 47 and 64% of seed use cases in Cambodia and Vietnam, respectively. Movement within communes was prevalent, with 82 and 78% of seed provided to others being exchanged between family and acquaintances within the commune in Cambodia and Vietnam, respectively. Yet, meaningful proportions of seed flows, mediated mostly by traders, also formed inter-provincial and international exchange networks, with 20% of Cambodia's seed acquisitions imported from abroad, especially neighboring Vietnam and Thailand. Dedicated seed traders and local cassava collection points played important roles in the planting material distribution network at particular sites. Sales of planting material were important means of both acquiring and providing seed in both countries, and commercial sale was more prevalent in high-intensity than in low-intensity production sites. Considerable variability existed in local seed networks, depending on the intensity of production and integration with trader networks. Adapted innovations are needed to upgrade cassava seed systems in the face of emerging pests and diseases, taking into account and building on the strengths of the existing systems; including their social nature and ability to quickly and efficiently distribute planting materials at the regional level. |
topic |
seed systems Manihot esculenta seed flow vegetatively propagated crops network analysis |
url |
https://www.frontiersin.org/article/10.3389/fsufs.2018.00073/full |
work_keys_str_mv |
AT erikdelaquis raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT kelseyfandersen raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT namiminato raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT thuythilecu raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT mariaeleanorkarssenberg raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT sophearithsok raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT krisagwyckhuys raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT krisagwyckhuys raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT krisagwyckhuys raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT jonathancnewby raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT dharanidharburra raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT paosrean raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT ivphirun raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT niemducle raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT nhanthipham raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT karenagarrett raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT connyjmalmekinders raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT paulcstruik raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam AT stefdehaan raisingthestakescassavaseednetworksatmultiplescalesincambodiaandvietnam |
_version_ |
1724822621044867072 |
spelling |
doaj-2ed8f29b930241d1893f86ca9a3997782020-11-25T02:31:42ZengFrontiers Media S.A.Frontiers in Sustainable Food Systems2571-581X2018-11-01210.3389/fsufs.2018.00073419809Raising the Stakes: Cassava Seed Networks at Multiple Scales in Cambodia and VietnamErik Delaquis0Kelsey F. Andersen1Nami Minato2Thuy Thi Le Cu3Maria Eleanor Karssenberg4Sophearith Sok5Kris A. G. Wyckhuys6Kris A. G. Wyckhuys7Kris A. G. Wyckhuys8Jonathan C. Newby9Dharani Dhar Burra10Pao Srean11Iv Phirun12Niem Duc Le13Nhan Thi Pham14Karen A. Garrett15Conny J. M. Almekinders16Paul C. Struik17Stef de Haan18International Center for Tropical Agriculture, Hanoi, VietnamPlant Pathology Department, Institute for Sustainable Food Systems, and Emerging Pathogens Institute, University of Florida, Gainesville, FL, United StatesInternational Center for Tropical Agriculture, Hanoi, VietnamInternational Center for Tropical Agriculture, Hanoi, VietnamDepartment of Social Sciences, Wageningen University and Research, Wageningen, NetherlandsInternational Center for Tropical Agriculture, Hanoi, VietnamInstitute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou, ChinaSchool of Biological Sciences, University of Queensland, Brisbane, QLD, AustraliaInstitute of Plant Protection, China Academy of Agricultural Sciences, Beijing, ChinaInternational Center for Tropical Agriculture, Hanoi, VietnamInternational Center for Tropical Agriculture, Hanoi, VietnamFaculty of Agriculture and Food Processing, University of Battambang, Battambang, CambodiaDepartment of Industrial Crops, General Directorate of Agriculture, Phnom Penh, CambodiaFaculty of Economics, Tay Nguyen University, Dak Lak, Vietnam0Hung Loc Agricultural Research Center, Dong Nai, VietnamPlant Pathology Department, Institute for Sustainable Food Systems, and Emerging Pathogens Institute, University of Florida, Gainesville, FL, United StatesDepartment of Social Sciences, Wageningen University and Research, Wageningen, Netherlands1Centre for Crop Systems Analysis, Department of Plant Sciences, Wageningen University and Research, Wageningen, NetherlandsInternational Center for Tropical Agriculture, Hanoi, VietnamCassava is one of the most important annual crops in Southeast Asia, and faces increasing seed borne pest and disease pressures. Despite this, cassava seed systems have received scant research attention. In a first analysis of Vietnamese and Cambodian cassava seed systems, we characterized existing cassava seed systems in 2016–2017 through a farmer survey based approach at both national and community scales, with particular focus on identifying seed system actors, planting material management, exchange mechanisms, geographies, and variety use, and performed a network analysis of detected seed movement at the provincial level. Despite their status as self-organized “informal” networks, the cassava seed systems used by farmers in Vietnam and Cambodia are complex, connected over multiple scales, and include links between geographically distant sites. Cassava planting material was exchanged through farmer seed systems, in which re-use of farm-saved supply and community-level exchanges dominated. At the national level, use of self-saved seed occurred in 47 and 64% of seed use cases in Cambodia and Vietnam, respectively. Movement within communes was prevalent, with 82 and 78% of seed provided to others being exchanged between family and acquaintances within the commune in Cambodia and Vietnam, respectively. Yet, meaningful proportions of seed flows, mediated mostly by traders, also formed inter-provincial and international exchange networks, with 20% of Cambodia's seed acquisitions imported from abroad, especially neighboring Vietnam and Thailand. Dedicated seed traders and local cassava collection points played important roles in the planting material distribution network at particular sites. Sales of planting material were important means of both acquiring and providing seed in both countries, and commercial sale was more prevalent in high-intensity than in low-intensity production sites. Considerable variability existed in local seed networks, depending on the intensity of production and integration with trader networks. Adapted innovations are needed to upgrade cassava seed systems in the face of emerging pests and diseases, taking into account and building on the strengths of the existing systems; including their social nature and ability to quickly and efficiently distribute planting materials at the regional level.https://www.frontiersin.org/article/10.3389/fsufs.2018.00073/fullseed systemsManihot esculentaseed flowvegetatively propagated cropsnetwork analysis |