References of "Curnel, Yannick"
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See detailCrowdsourcing for agricultural applications: A review of uses and opportunities for a farmsourcing approach
Minet, Julien ULiege; Curnel, Yannick; Gobin, Anne et al

in Computers & Electronics in Agriculture (2017), 142, Part A

Abstract Crowdsourcing, understood as outsourcing tasks or data collection by a large group of non-professionals, is increasingly used in scientific research and operational applications. In this paper ... [more ▼]

Abstract Crowdsourcing, understood as outsourcing tasks or data collection by a large group of non-professionals, is increasingly used in scientific research and operational applications. In this paper, we reviewed crowdsourcing initiatives in agricultural science and farming activities and further discussed the particular characteristics of this approach in the field of agriculture. On-going crowdsourcing initiatives in agriculture were analysed and categorised according to their crowdsourcing component. We identified eight types of agricultural data and information that can be generated from crowdsourcing initiatives. Subsequently we described existing methods of quality control of the crowdsourced data. We analysed the profiles of potential contributors in crowdsourcing initiatives in agriculture, suggested ways for increasing farmers’ participation, and discussed the on-going initiatives in the light of their target beneficiaries. While crowdsourcing is reported to be an efficient way of collecting observations relevant to environmental monitoring and contributing to science in general, we pointed out that crowdsourcing applications in agriculture may be hampered by privacy issues and other barriers to participation. Close connections with the farming sector, including extension services and farm advisory companies, could leverage the potential of crowdsourcing for both agricultural research and farming applications. This paper coins the term of farmsourcing as a professional crowdsourcing strategy in farming activities and provides a source of recommendations and inspirations for future collaborative actions in agricultural crowdsourcing. [less ▲]

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See detailPotato monitoring in Belgium with "watchITgrow"
Piccard, Isabelle; Gobin, Anne; Wellens, Joost ULiege et al

in 19th International Workshop on the Analysis of Multitemporal Remote Sensing Images (2017, June 29)

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See detailAssessment of AquaCrop for winter wheat using satellite derived fCover data
Mohamed Sallah, Abdoul-Hamid ULiege; Wellens, Joost ULiege; Tychon, Bernard ULiege et al

in 19th International Workshop on the Analysis of Multitemporal Remote Sensing Images (2017, June 29)

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See detailiPot: Improved potato monitoring in Belgium using remote sensing and crop growth modelling
Piccard, Isabelle; Gobin, Anne; Curnel, Yannick et al

Poster (2016, April)

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See detailKey challenges and priorities for modelling European grasslands under climate change
Kipling, Richard P.; Virkajärvi, Perttu; Breitsameter, Laura et al

in Science of the Total Environment (2016), 566–567

Abstract Grassland-based ruminant production systems are integral to sustainable food production in Europe, converting plant materials indigestible to humans into nutritious food, while providing a range ... [more ▼]

Abstract Grassland-based ruminant production systems are integral to sustainable food production in Europe, converting plant materials indigestible to humans into nutritious food, while providing a range of environmental and cultural benefits. Climate change poses significant challenges for such systems, their productivity and the wider benefits they supply. In this context, grassland models have an important role in predicting and understanding the impacts of climate change on grassland systems, and assessing the efficacy of potential adaptation and mitigation strategies. In order to identify the key challenges for European grassland modelling under climate change, modellers and researchers from across Europe were consulted via workshop and questionnaire. Participants identified fifteen challenges and considered the current state of modelling and priorities for future research in relation to each. A review of literature was undertaken to corroborate and enrich the information provided during the horizon scanning activities. Challenges were in four categories relating to: 1) the direct and indirect effects of climate change on the sward 2) climate change effects on grassland systems outputs 3) mediation of climate change impacts by site, system and management and 4) cross-cutting methodological issues. While research priorities differed between challenges, an underlying theme was the need for accessible, shared inventories of models, approaches and data, as a resource for stakeholders and to stimulate new research. Developing grassland models to effectively support efforts to tackle climate change impacts, while increasing productivity and enhancing ecosystem services, will require engagement with stakeholders and policy-makers, as well as modellers and experimental researchers across many disciplines. The challenges and priorities identified are intended to be a resource 1) for grassland modellers and experimental researchers, to stimulate the development of new research directions and collaborative opportunities, and 2) for policy-makers involved in shaping the research agenda for European grassland modelling under climate change. [less ▲]

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See detailBulletin agrométéorologique - Situation au 1er septembre 2010
Tychon, Bernard ULiege; Djaby, Bakary ULiege; Denis, Antoine ULiege et al

in Bulletin Agrométéorologique (2010), 8(4), 1-4

La période d’avril à août 2010 fut marquée par une forte alternance de périodes sèches et humides avec des épisodes froids succédant à des vagues de chaleur. La période sèche de mi-juin à mi-juillet fut ... [more ▼]

La période d’avril à août 2010 fut marquée par une forte alternance de périodes sèches et humides avec des épisodes froids succédant à des vagues de chaleur. La période sèche de mi-juin à mi-juillet fut particulièrement remarquable et la fin de cette période s’est accompagnée de températures très élevées accentuant encore les besoins en eau des plantes. Les cultures à système racinaire superficiel ou situées dans des terrains peu profond ont largement souffert de cette période. Cependant le mois d’août très pluvieux a permis à la plupart des cultures de printemps de récupérer leur retard de croissance. Les rendements prévus par nos modèles sont bons pour les cultures de betterave sucrière, pomme de terre et maïs. [less ▲]

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See detailExploring the potential of crop specific green area index time series to improve yield estimation at regional scale
Duveiller, Gregory; de Wit, Allard; Kouadio, Amani Louis ULiege et al

in Sobrino, J. A. (Ed.) Proceedings of the 3rd International Symposium on Recent Advances in Quantitative Remote Sensing (RAQRS'III) (2010)

Crop status, such as the Green Area Index (GAI), can be retrieved from satellite observations by modelling and inverting the radiative transfer within the canopy. Providing such information along the ... [more ▼]

Crop status, such as the Green Area Index (GAI), can be retrieved from satellite observations by modelling and inverting the radiative transfer within the canopy. Providing such information along the growing season can potentially improve crop growth modelling and yield estimation. However, such approaches have proven difficult to apply on coarse resolution satellite data due to the fragmented land cover in many parts of the World. Advances in operational crop mapping will sooner or later allow the production of crop maps relatively early in the crop growth season, thereby providing an opportunity to sample pixels from medium/coarse spatial resolution data with relatively high cover fraction of a particular crop type to derive crop specific GAI time series. This research explores how to use such time series derived from MODIS to produce indicators of crop yield using two approaches over part of Belgium. The first method consists in looking at metrics of the decreasing part of the GAI curves when senescence occurs. Such metrics, like the position of the inflexion point, have been shown to be significantly correlated to yield. The second approach is to optimize the WOFOST model used in the European Crop Growth Monitoring System (CGMS) based on the GAI time series. Results show that, although the optimized model shows considerably better performance than the model running on the default parameter, the model is sometimes outperformed by the simpler metric approach. In all cases, indicators including remote sensing information provide better estimates that the average yield of previous years. [less ▲]

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See detailBulletin agrométéorologique - Situation au 30 septembre 2007
Tychon, Bernard ULiege; Schyns, Virginie; Denis, Antoine ULiege et al

in Bulletin Agrométéorologique (2007), 6(3), 1-4

Les conditions météorologiques depuis le 20 août dernier, date du dernier bulletin, ont été très proches des conditions normales. Mis à part quelques orages locaux, aucun phénomène météorologique ... [more ▼]

Les conditions météorologiques depuis le 20 août dernier, date du dernier bulletin, ont été très proches des conditions normales. Mis à part quelques orages locaux, aucun phénomène météorologique particulier n’est à signaler. Les rendements satisfaisants à bons annoncés dans le dernier bulletin pour les cultures de maïs, betterave et pomme de terre sont confirmés. [less ▲]

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See detailBulletin agrométéorologique - Situation au 20 août 2007
Tychon, Bernard ULiege; Schyns, Virginie; Denis, Antoine ULiege et al

in Bulletin Agrométéorologique (2007), 6(2), 1-4

Les conditions météorologiques depuis le début juillet ont été marquées par des pluies fréquentes et parfois violentes en particulier dans le Nord du pays. Aucun stress hydrique n’est à signaler. Les ... [more ▼]

Les conditions météorologiques depuis le début juillet ont été marquées par des pluies fréquentes et parfois violentes en particulier dans le Nord du pays. Aucun stress hydrique n’est à signaler. Les températures de juillet et août sont restées proches de la normale permettant aux cultures de conserver une certaine avance phénologique acquise au printemps, ce qui laisse globalement augurer de bons rendements pour les cultures de maïs, betteraves et pomme de terre. [less ▲]

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See detailBulletin agrométéorologique - Situation fin juin 2007
Tychon, Bernard ULiege; Schyns, Virginie; Denis, Antoine ULiege et al

in Bulletin Agrométéorologique (2007), 6(1), 1-4

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See detailBulletin agrométéorologique - Août 2006
Tychon, Bernard ULiege; Ozer, Pierre ULiege; De Longueville, Florence ULiege et al

in Bulletin Agrométéorologique (2006), 5(5),

L’année 2006 restera dans les annales comme étant une année exceptionnelle au niveau météorologique tant par son printemps froid que par son mois de juillet très sec et son mois d’août particulièrement ... [more ▼]

L’année 2006 restera dans les annales comme étant une année exceptionnelle au niveau météorologique tant par son printemps froid que par son mois de juillet très sec et son mois d’août particulièrement pluvieux. Ces conditions exceptionnelles rendent très délicates les prévisions de rendement. Il faut signaler que les rendements estimés sont ceux sur pieds et ils ne prennent pas en considération les pertes dues aux mauvaises conditions de récolte. Les rendements prévus pour les principales cultures de printemps restent très proches des moyennes calculées sur les 5 dernières années. [less ▲]

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See detailAmong and within provenance variability for decay resistance of Larch wood to fungi
Jacques, Dominique; Curnel, Yannick; Jourez, Benoît ULiege et al

Scientific conference (2002, September 16)

Decay resistance of Larch wood was examined at the species, provenance and tree levels. To realise this study, 313 trees were harvested in 13 contrasting populations of different ages derived from 2 ... [more ▼]

Decay resistance of Larch wood was examined at the species, provenance and tree levels. To realise this study, 313 trees were harvested in 13 contrasting populations of different ages derived from 2 natural stands (France, Austria) and 4 provenance/progeny trials (Germany, Belgium, France and Great-Britain). The material includes 11 European, 1 japanese and 2 hybrid larch origins. [less ▲]

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