Publications of Bernard Bodson
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See detailLivre Blanc Céréales
Bodson, Bernard ULiege; De Proft, Michel; Watillon, Bernard

Book published by Gembloux Agro Bio Tech - Edition septembre 2020 (2020)

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See detail1. Implantation de la culture
Blanchard, Remy ULiege; Meza, Rodrigo; Jacquemin, Guillaume et al

in Bodson, Bernard; De Proft, Michel; Watillon, Bernard (Eds.) Livre Blanc Céréales (2020, September 10)

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See detail2. Variétés - 2. Froment d'hiver
Meza, Rodrigo; Eylenbosch, Damien; Heens, Benoît et al

in Bodson, Bernard; De Proft, Michel; Watillon, Bernard (Eds.) Livre Blanc Céréales (2020, September 10)

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See detailLivre Blanc Céréales
Bodson, Bernard ULiege; De Proft, Michel; Watillon, Bernard

Book published by Gembloux Agro-Bio Tech - Février 2020 (2020)

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See detail8. Variétés en céréales de printemps
Meza, Rodrigo; Godin, B.; Meurs, Rémi et al

in Bodson, Bernard; De Proft, Michel; Watillon, Bernard (Eds.) Livre Blanc Céréales (2020, February 19)

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See detail3. La fertilisation azotée
Blanchard, Remy ULiege; Meurs, Rémi; Vandenberghe, Christophe ULiege et al

in Bodson, Bernard; De Proft, Michel; Watillon, Bernard (Eds.) Livre Blanc Céréales (2020, February 19)

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See detailEtude de l’impact de la fertilisation azotée et de la fauche à l’automne sur les différentes productions d’une culture céréalière pérenne (Th. intermedium).
Fagnant, Laura ULiege; Duchêne, Olivier; Bindelle, Jérôme ULiege et al

Poster (2020, January 29)

Th. intermedium could, in the future, be used in European crop rotations. As a perennial cereal crop, the species provides over many years grains, forage and various ecosystem services. Since the species ... [more ▼]

Th. intermedium could, in the future, be used in European crop rotations. As a perennial cereal crop, the species provides over many years grains, forage and various ecosystem services. Since the species has never been studied in Belgium, the evaluation of its diverse performances and their optimization seem essential. Thus, the yields and their components were evaluated according to two agronomic levers (nitrogen fertilization and mowing). This has shown that the nitrogen fertilization of 100 Kg N/ha at tillering is particularly useful in the year of establishment, increasing grain and total dry matter yields at harvest from 0,8 to 1,5T/ha and from 4,3 to 10,6T/ha respectively. In the second year, it was the autumn mowing that had an overall positive effect on production by allowing the valorization of good quality fodder. Future researches will make it possible to refine agronomic knowledge on the crop and to establish a technical itinerary adapted to the multiple services of the species. [less ▲]

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See detailDynamics and mechanisms of volatile organic compound exchanges in a winter wheat field
Bachy, Aurélie ULiege; Aubinet, Marc ULiege; Amelynck, C. et al

in Atmospheric Environment (2020), 221

The understanding of biogenic volatile organic compound (BVOC) exchanges has become a key scientific issue because of their high reactivity and their impact in the atmosphere. However, so far, few studies ... [more ▼]

The understanding of biogenic volatile organic compound (BVOC) exchanges has become a key scientific issue because of their high reactivity and their impact in the atmosphere. However, so far, few studies have focused on BVOCs exchanged by agricultural species, and in particular by winter wheat, despite this species being the leading worldwide crop in terms of harvested area. This study for the first time investigated BVOC exchanges from winter wheat during most developmental stages of the plant. Fluxes were measured in Belgium at the ecosystem-scale using the disjunct eddy covariance by mass scanning technique, and a proton-transfer-reaction mass spectrometer for BVOC ambient mixing ratio measurements. As is usually observed for crops and grasses, the winter wheat field emitted mainly methanol, although bi-directional exchanges were observed. The second most exchanged compound was acetic acid which was captured during the entire growing season. Bi-directional exchanges of acetaldehyde and acetone were also reported. Terpene exchanges were 22 times smaller than oxygenated VOC (OVOC) exchanges. For all compounds, the exchanges were the most pronounced at the end of the growing season, i.e., under warm, dry and sunny conditions. Senescence-induced emissions were furthermore observed for methanol and acetaldehyde. For all investigated OVOCs, the exchanges very likely originated from both the soil and the plants. Despite their mixed origin, the MEGAN (Model of Emissions of Gases and Aerosols from Nature) v2.1 up-scaling model could adequately reproduce the methanol, acetaldehyde and acetone exchanges measured at this site during the mature and senescence phases of the plant, when the standard emission factor and the leaf age factor were adapted based on the measurements. In contrast, the model failed to reproduce the measured acetic acid exchanges. When the standard emission factor values currently assigned in MEGAN were applied, however, the exchanges were largely over-estimated for all compounds. © 2019 Elsevier Ltd [less ▲]

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See detailLivre Blanc Céréales
Bodson, Bernard ULiege; De Proft, Michel

Book published by Gembloux Agro-Bio Tech (2019)

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See detail1. Implantation des cultures
Blanchard, Remy ULiege; Meza, Rodrigo; Jacquemin, Guillaume et al

Book published by Gembloux Agro-Bio Tech (2019)

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See detail7. Valorisation des froments de la récolte 2019
Sinnaeve, Georges; Godin, Bruno; Chandelier, Anne et al

Book published by Gembloux Agro-Bio Tech - Septembre 2019 (2019)

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See detailPerspectives offertes par l'imagerie hyperspectrale proche infrarouge dans l'étude de systèmes racinaires de légumineuses
Eylenbosch, Damien ULiege; Baeten, Vincent; Bodson, Bernard ULiege et al

in Innovations Agronomiques (2019), 74

Cet article synthétise les résultats de plusieurs études menées sur des systèmes racinaires de pois protéagineux en utilisant les données fournies par l'imagerie hyperspectrale proche infrarouge, une ... [more ▼]

Cet article synthétise les résultats de plusieurs études menées sur des systèmes racinaires de pois protéagineux en utilisant les données fournies par l'imagerie hyperspectrale proche infrarouge, une technique d'analyse combinant l'imagerie et la spectroscopie vibrationnelle. Dans un premier cas d'étude, cette méthode d'analyse a permis de quantifier la masse de racines de pois protéagineux au sein d'échantillons de racines prélevés sous des cultures en association de pois protéagineux et de froment d'hiver. Dans un second cas d'étude, cette méthode d'analyse a permis de quantifier la leghémoglobine au sein de nodosités individuelles de pois. La concentration de cette molécule st liée à l'activité de fixation d'azote des nodosités et sert dès lors d'indicateur pour mesurer cette activité. Sur base des résultats de ces études, cet article propose aussi des pistes de réflexion et de développement en lien avec l'imagerie hyperspectrale dans l'étude des systèmes racinaires de légumineuses. Il vise également à démontrer dans quelle mesure cette technique d'analyse constitue un outil de mesure intéressant dans l'étude des systèmes racinaires en général. [less ▲]

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See detailRestoring a worn-out pasture: what impact on N2O exchanges ?
Lognoul, Margaux ULiege; Gourlez de la Motte, Louis ULiege; Naiken, Alwin ULiege et al

Poster (2019, April 08)

A paired-flux tower experiment was set up in a 40 y-o grazed pasture managed by a local farmer. A parcel under restoration was compared to a control plot. In addition to N2O flux monitoring, soil mineral ... [more ▼]

A paired-flux tower experiment was set up in a 40 y-o grazed pasture managed by a local farmer. A parcel under restoration was compared to a control plot. In addition to N2O flux monitoring, soil mineral N content (ammonium and nitrate) was measured every 10-15 days. [less ▲]

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See detailHerd position habits can bias net CO2 ecosystem exchange estimates in free range grazed pastures.
Gourlez de la Motte, Louis ULiege; Dumortier, Pierre ULiege; Beckers, Yves ULiege et al

Conference (2019, April)

The eddy covariance (EC) technique has been widely used to quantify the net CO2 ecosystem exchange (NEE) of grasslands, which is an important component of grassland carbon and greenhouse gas budgets. In ... [more ▼]

The eddy covariance (EC) technique has been widely used to quantify the net CO2 ecosystem exchange (NEE) of grasslands, which is an important component of grassland carbon and greenhouse gas budgets. In free range grazed pastures, NEE estimations are supposed to also include cattle respiration. However, cattle respiration measurement by an EC system is challenging as animals act as moving points emitting CO2 that are more or less captured by the EC tower depending on their presence in the footprint. Often it is supposed that, over the long term, cattle distribution in the pasture is homogeneous so that fluctuations due to moving sources are averaged and NEE estimates are reasonably representative of cattle respiration. In this study, we test this hypothesis by comparing daily cow respiration rate per livestock unit (LU) estimated by postulating a homogeneous cow repartition over the whole pasture with three other estimates based on animal localization data, animal scale carbon budget and confinement experiments. We applied these methods to an intensively managed free range grassland and showed that the NEE estimate based on a homogeneous cow repartition was systematically lower than the three other estimates. Consequently, in order to allow estimating the validity of this hypothesis but also to improve inter site comparisons, we advocate to compute separately pasture NEE and grazer’s respiration. In the presentation, we will propose a method based on cattle presence detection using CH4 fluxes, elimination of data with cattle and gap filling on the basis of data without cattle. For the second we propose three independent methods (animal localization with GPS, animal scale carbon budget, confinement experiments) to estimate the cattle respiration rate and discuss their use depending on site specificities. [less ▲]

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See detail9. La culture en association de froment et de pois protéagineux d'hiver: une possibilité de diversification attrayante et durable pour nos rotations
Pierreux, Jérome ULiege; Delaplace, Pierre ULiege; Bodson, Bernard ULiege et al

in Bodson, Bernard; De Proft, Michel; Watillon, Bernard (Eds.) Livre Blanc Céréales (2019, February 27)

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See detailLivre Blanc Céréales
Bodson, Bernard ULiege; De Proft, Michel; Watillon, Bernard

Book published by Gembloux Agro Bio Tech - Edition février 2019 (2019)

Detailed reference viewed: 35 (1 ULiège)