Participatory variety development for sorghum in Burkina Faso: Farmers’ selection and farmers’ criteria

Brocke, Kirsten Vom; Trouche, Gilles; Weltzien, Eva; Barro-Kondombo, Clarisse Pulchérie; Gozé, Éric; Chantereau, Jacques

doi:10.1016/j.fcr.2010.07.005

Cited by 93 publications

(94 citation statements)

References 19 publications

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“…Successful examples of the use of participatory varietal selection and participatory plant breeding/clientoriented breeding are collated in Ceccarelli et al (2009), as well as in more recent publications (e.g. vom Brocke et al 2010;Joshi et al 2012) (Fig. 2). b. Tactical management.…”

Section: Relative Contributions-management and Breedingmentioning

confidence: 99%

Addressing the yield gap in rainfed crops: a review

Anderson

Johansen

Siddique

2016

Agron. Sustain. Dev.

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The problems and challenges of rapidly increasing world population, global climate change, shortages of water suitable for irrigation and degradation of agricultural land are increasing the demand to improve grain production from rainfed arable lands. Specific challenges include estimating the size and thus the value of the yield gap, identifying the factors limiting current average production and designing profitable remedial strategies for a range of agro-ecological regions. This review of the rainfall-limited potential yields and the gap between actual or average yields of cereal and legume crops and the rainfall-limited potential indicates that there is still substantial room to increase the average yield of crops in rainfed systems in both developed and developing regions. The review has indicated that (1) the size of the gap between average and potential yields varies according to the agro-ecological zone and the available technologies from about 0.5 to over 5 t/ha, leaving considerable scope for future yield improvement; (2) there is relatively less information applicable at the farm or field scale that assesses the spatial and temporal variability of the yield gap, the reasons for the gap and the possible methods to close the gap; (3) there is also limited information on the feasibility and profitability of applying various approaches to close the gap, including tactical and strategic management practices and plant breeding; (4) the evidence of the impact of the components of conservation agriculture on crop yields in a wide range of agro-ecological regions supports the adoption of zero tillage and crop rotation but is less clear in support of residue retention; (5) objective identification and testing of factors that limit production can lead to a rational sequence of amelioration that is specific to each agro-ecological or field situation and can close the yield gap in winter-dominant rainfall environments; and (6) farmerparticipatory varietal selection, including breeding for specific adaptation can make a substantial contribution to closing the gap in a range of environments. A common observation from the reports reviewed here is that sustainable yield improvement will need to employ a range of methods that are appropriate to specific agro-ecological conditions-previous approaches based on single inputs, practices or genotypes can only be partial solutions.

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Section: Relative Contributions-management and Breedingmentioning

confidence: 99%

Addressing the yield gap in rainfed crops: a review

Anderson

Johansen

Siddique

2016

Agron. Sustain. Dev.

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“…In the context of increasing demographic pressures, farmers in West and Central Africa are looking for new sorghum varieties offering increased grain yield while ensuring adaptation to agroclimatic conditions and maintaining specific grain qualities for processing and consumption (Weltzien et al, 2008a;vom Brocke et al, 2010). A major challenge for effectively breeding for increased sorghum yield in WCA is the complexity of environments and the associated genotype-by-environment (G ´ E) interactions across small-holder farmer conditions.…”

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confidence: 99%

Farmer Participatory Early‐Generation Yield Testing of Sorghum in West Africa: Possibilities to Optimize Genetic Gains for Yield in Farmers’ Fields

et al. 2016

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The effectiveness of on‐farm and/or on‐station early generation yield testing was examined to maximize the genetic gains for sorghum yield under smallholder famer production conditions in West Africa. On‐farm first‐stage yield trials (augmented design, 150 genotypes with subsets of 50 genotypes tested per farmer) and second‐stage yield trials (replicated α‐lattice design, 21 test genotypes) were conducted, as well as on‐station α‐lattice first‐ and second‐stage trials under contrasting phosphorous conditions. On‐farm testing was effective, with yield showing significant genetic variance and acceptable heritabilities (0.56 in first‐ and 0.61 to 0.83 in second‐stage trials). Predicted genetic gains from on‐station yield trials were always less than from direct testing on‐farm, although on‐station trials under low‐phosphorus and combined over multiple environments improved selection efficiencies. Modeling alternative designs for on‐farm yield testing (augmented, farmer‐as‐incomplete‐block, multiple lattice, and augmented p‐rep) indicated that acceptable heritabilities (0.57 to 0.65) could be obtained with all designs for testing 150 progenies in 20 trials and 75 plots per farmer. Ease of implementation and risk of errors would thus be key criteria for choice of design. Integrating results from on‐station and on‐farm yield testing appeared beneficial as progenies selected both by on‐farm and on‐station first‐stage trials showed higher on‐farm yields in second‐stage testing.

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“…Small farmers consider multiple traits to satisfy their diverse needs. Vom Brocke et al (2010) noted that farmers' selection traits are multivariate in nature. At present the major variety selection criteria of breeders in Ethiopia are limited to higher yield, late blight resistance, early maturity and wide adaptability to different agro-ecological zones.…”

Section: Introductionmentioning

confidence: 99%

Participatory Variety Selection: A Tool to Understand Farmers′ Potato Variety Selection Criteria

et al. 2017

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Although the Ethiopian potato program has released more than 30 new varieties, selected primarily for yield potential and late blight tolerance, the majority of farmers still choose to grow older 'local varieties'. Cognizant of this, the current study aimed to identify traits that farmers consider most important when deciding which varieties to grow. The study was conducted at two sites in northwest Ethiopia, representing two major agroecological zones, in two distinct growing seasons, using a participatory variety selection approach. Diseasefree seed tubers of nine local and three new varieties were planted. Twenty-three traits were found to influence the varieties that farmers selected and seven of them differed between agroecological zones. Gender differences were also observed for three of the 23 traits at Laigaint (submoist cool agroecology). Of the 23 traits, 12 were considered very important in one or both of the agroecological zones as well as in at least one growing season. At present eight of these 12 traits are not given high priority by the Ethiopian potato variety selection program. The results show that farmers' selection criteria are very diverse, that no variety possesses all desirable characteristics, and that there is a need for selecting varieties adapted to different agroecologies and growing seasons. This study further suggests that taking farmer interests into account is important for a highly heterozygous, clonally-propagated crop like potato to be accepted by farmers.

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Participatory variety development for sorghum in Burkina Faso: Farmers’ selection and farmers’ criteria

Cited by 93 publications

References 19 publications

Addressing the yield gap in rainfed crops: a review

Addressing the yield gap in rainfed crops: a review

Farmer Participatory Early‐Generation Yield Testing of Sorghum in West Africa: Possibilities to Optimize Genetic Gains for Yield in Farmers’ Fields

Participatory Variety Selection: A Tool to Understand Farmers′ Potato Variety Selection Criteria

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