Yield Perceptions, Determinants and Adoption Impact of on Farm Varietal Mixtures for Common Bean and Banana in Uganda

Nankya, Rose; Mulumba, J.W.; Caracciolo, Francesco; Raimondo, Maria; Schiavello, Francesca; Gotor, Elisabetta; Kikulwe, Enoch; Jarvis, D. I.

doi:10.3390/su9081321

Cited by 16 publications

(16 citation statements)

References 52 publications

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“…One or more cultivars in a crop species that occur together and interact may result in an improvement of grain yield (Mengistu et al ., ; Kiaer et al ., ). Such cultivar mixtures that increase grain yield are easily transferable to the low‐input management systems common throughout most Asian and African crop systems (Teng et al ., ; Nankya et al ., ). The effects of cultivar mixtures on grain yield have been attributed to genetic diversity (Smithson & Lenne, ; Casagrande et al ., ), but have never been linked to kin recognition among crop cultivars.…”

Section: Discussionmentioning

confidence: 97%

Kin recognition in rice (Oryza sativa) lines

et al. 2018

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Kin recognition is an important mediator of interactions within individuals of a species. Despite increasing evidence of kin recognition in natural plant populations, relatively little is known about kin recognition in crop species where numerous cultivars have been generated by artificial selection. We identified rice (Oryza sativa) cultivars with the ability for kin recognition from two sets of indica-inbred and indica-hybrid lines at different levels of genetic relatedness. We then assessed this ability among kin and nonkin and tested potential mechanisms in a series of controlled experiments and field trails. Rice cultivars with the ability for kin recognition were capable of detecting the presence of kin and nonkin and responded to them by altering root behavior and biomass allocation, particularly for grain yield. Furthermore, we assessed the role of root exudates and found a root-secreted nitrogen-rich allantoin component to be responsible for kin recognition in rice lines. Kin recognition in rice lines mediated by root exudates occurs in a cultivar-dependent manner. Rice cultivars with the ability for kin recognition may increase grain yield in the presence of kin. Such an improvement of grain yield by kin recognition of cultivar mixtures offers many implications and applications in rice production.

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Section: Discussionmentioning

confidence: 97%

Kin recognition in rice (Oryza sativa) lines

et al. 2018

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“…To face future challenges, thus ensuring food security, the adoption of more efficient land management practices is extremely necessary (Lambin & Meyfroidt, 2011;Mori, Lertzman, & Gustafsson, 2017;Rockström et al, 2017). Policy makers should encourage the adoption of alternative farming systems to minimize the land degradation process (Nankya et al, 2017), encouraging farming practices that may improve the provisioning of ecosystem services. Moreover, as our research evidenced, the overall cultivation area will increase, mainly through the inclusion of unsuitable areas for wheat cultivation.…”

Section: Discussionmentioning

confidence: 99%

Land degradation and climate change: Global impact on wheat yields

et al. 2020

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This study aims at estimating the wheat yield response to future challenges (land degradation and climate change) through a statistical emulator. Data from Global Agro-ecological Zones on the overall wheat yields of 254 provinces for nine main wheat-producing countries and corresponding climate and land suitability information were collected to estimate the statistical relationship between regressors and wheat yields. Once the statistical emulator was calibrated, three scenarios were developed to predict, separately and jointly, the impact of climate change and land degradation on wheat yields and productions in 2050 using the global climate model ECHAM4 information under the B2 scenario with the CO 2 fertilization effect. Results showed that under temperature and precipitation projections wheat yield would increase on average by 8% (first scenario); however, the impact of future land suitability (second scenario) on wheat yields would be negative, lowering the average yield (−5%), and overall wheat production (−14%). Combining both effects in the third scenario, future wheat yields would increase by 4.6%, while overall production will decrease by 5.5% since the harvest area will be reduced by 9.7%. Thus, land degradation more than climate change is likely to pose significant challenges for overall wheat production in the future.

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“…The increasing awareness concerning more sustainable uses of natural resources and the shift to a resource-efficient economy [1][2][3][4][5] are stimulating policy initiatives and institutional processes towards the development of bioeconomy strategies [6]. Bioeconomy is aimed at "making virtue out of necessity" [7].…”

Section: Introductionmentioning

confidence: 99%

Making Virtue Out of Necessity: Managing the Citrus Waste Supply Chain for Bioeconomy Applications

et al. 2018

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The efficient use of agricultural wastes and by-products, which essentially transforms waste materials into value-added products, is considered as pivotal for an effective bioeconomy strategy for the rural development. Within this scope, citrus waste management represents a major issue for citrus processors. However, it also represents a potentially unexploited resource for rural sustainable development. This study focuses on analyzing the current management of citrus waste in South Italy, and on identifying the determinants and barriers that may affect an entrepreneur’s choice in the destination of citrus waste. This study investigates the preferences of citrus processors regarding the contract characteristics necessary to take part in a co-investment scheme. Both analyses are preliminary steps in designing an innovative and sustainable citrus by-product supply chain. Results show that the distance between the citrus processors and the citrus by-products plant is one of the main criteria for choosing alternative valorization pathways. Moreover, guaranteed capital, a short duration of the contract, and reduced risk are contract scheme characteristics that improve entrepreneurs’ willingness to co-invest in the development of a citrus waste multifunctional plant. The overall applied approach can be extended to other contexts for designing new and innovative by-product supply chains, thereby enhancing the implementation of bioeconomy strategies.

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Yield Perceptions, Determinants and Adoption Impact of on Farm Varietal Mixtures for Common Bean and Banana in Uganda

Cited by 16 publications

References 52 publications

Kin recognition in rice (Oryza sativa) lines

Kin recognition in rice (Oryza sativa) lines

Land degradation and climate change: Global impact on wheat yields

Making Virtue Out of Necessity: Managing the Citrus Waste Supply Chain for Bioeconomy Applications

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