References of "Destain, Jean-Pierre"
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See detailA MODEL FOR WHEAT YIELD PREDICTION BASED ON REAL-TIME MONITORING OF ENVIRONMENTAL FACTORS
Dumont, Benjamin ULg; Lebeau, Frédéric ULg; Vancutsem, Françoise ULg et al

Poster (2010, July)

This paper presents the results of a one year preliminary study in which a real time monitoring system was used to feed the STICS soil crop model. As indicated by the statistical criteria (RMSE and model ... [more ▼]

This paper presents the results of a one year preliminary study in which a real time monitoring system was used to feed the STICS soil crop model. As indicated by the statistical criteria (RMSE and model efficiency), the optimization of some wheat crop parameters allows the model to predict the yields with good accuracy for different soil type and different nitrogen application rates. [less ▲]

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See detailLa fumure azotée
Destain, Jean-Pierre ULg; Roisin, Christian; Marcoen, Jean Marie ULg et al

in Livre Blanc: Céréales - Gembloux (2010, February 24)

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See detailL'isotope stable 15Net le lysimètre, des outils complémentaires pour l'étude de la lixiviation de l'azote dans les sols agricoles
Destain, Jean-Pierre ULg; Fonder, Nathalie; Xanthoulis, Dimitri ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2010), 14(S1), 91-96

L’isotope stable 15N a été utilisé dans des expérimentations en cases lysimétriques visant à étudier la lixiviation de l’azote dans les sols agricoles. À Gembloux, un apport de nitrate l’ammoniaque ... [more ▼]

L’isotope stable 15N a été utilisé dans des expérimentations en cases lysimétriques visant à étudier la lixiviation de l’azote dans les sols agricoles. À Gembloux, un apport de nitrate l’ammoniaque présentant une abondance isotopique de 2,161 At%15N a été appliqué à raison de 200 kg N.ha-1 dans deux lysimètres, avant une culture d’épinard suivie de haricot et d’un froment d’hiver. La récupération de l’azote par les cultures a été de 39,8 % dans le premier lysimètre et de 62,2 % dans le second. Les concentrations en azote nitrique des eaux percolées du second ont été constamment plus élevées que dans le premier, probablement à cause d’une moindre immobilisation microbienne. À Remicourt et Omal, un reliquat de 150 kg N.ha-1 (simulé par un apport de 15NH4 15NO3 en automne) a complètement disparu du profil du sol (0-90 cm) dès juillet de l’année suivante. Une culture de froment d’hiver à Omal n’a récupéré qu’environ 9 % de l’azote apporté à l’automne. La mesure de la teneur en azote nitrique des eaux percolées a montré des valeurs nettement plus élevées à Remicourt (jusqu’à plus de 70 mg N.l-1) suite à un apport important de compost riche en azote, qu’à Omal. L’isotope 15N n’a pu être détecté dans aucune des eaux lysimétriques, probablement par un manque de sensibilité de l’appareil. [less ▲]

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See detailEvaluation et proposition de révision du deuxième Programme de Gestion Durable de l'Azote en agriculture en Région wallonne (Belgique)
Vandenberghe, Christophe ULg; Benoit, Jérémie ULg; Deneufbourg, Mathieu ULg et al

in Marcoen, Jean Marie; Vandenberghe, Christophe (Eds.) Actes de l'Atelier "Nitrate - Eau" 2 au 5 juin 2009. Peyresq, France (2010)

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See detailL'isotope stable 15N et le lysimètre, des outils complémentaires pour l'étude de la lixiviation de l'azote dans les sols agricoles.
Destain, Jean-Pierre ULg; Fonder, Nathalie ULg; Xanthoulis, Dimitri ULg et al

in Vandenberghe, Christophe; Marcoen, Jean Marie (Eds.) Atelier Nitrate-Eau. Evaluation du Programme de Gestion Durable de l'Azote. (2010)

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See detailVariétés: escourgeon et orge d'hiver fourragers
Herman, Jean-Luc; Monfort, Bruno; Couvreur, Luc et al

in Livre Blanc: Céréales - Gembloux - Informations avant les semis (2009, September 10)

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See detailImplantation des cultures
Bodson, Bernard ULg; Roisin, Christian; Vancutsem, Françoise ULg et al

in Livre Blanc: Céréales - Gembloux - Informations avant les semis (2009, September 10)

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See detailLa fumure azotée
Destain, Jean-Pierre ULg; Couvreur, Luc; Herman, Jean-Luc et al

in Livre Blanc: Céréales - Gembloux (2009, February 18)

Bilan de l'année écoulée et recommandations pratiques

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See detailLa fumure azotée
Destain, Jean-Pierre ULg; Couvreur, Luc; Herman, Jean-Luc et al

Conference given outside the academic context (2008)

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See detailFermentable non-starch polysaccharides increase the excretion of bacterial proteins in the pig's faeces and reduce urinary N excretion.
Bindelle, Jérôme ULg; Leterme, Pascal; Wavreille, José et al

in Journal of Animal Science (2008), 86(suppl. 3), 101

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See detailHow fertilizer and soil nitrogen are distributed into winter wheat plant
Boulelouah, Nadia; Destain, Jean-Pierre ULg; Bodson, Bernard ULg et al

(2007, September 16)

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See detailLa fumure azotée
Destain, Jean-Pierre ULg; Couvreur, Luc; Herman, Jean-Luc et al

in Livre Blanc: Céréales - Gembloux (2007, February 28)

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See detailThe source of fermentable carbohydrates influences the in vitro protein synthesis by colonic bacteria isolated from pigs
Bindelle, Jérôme ULg; Buldgen, André; Wavreille, José et al

in Animal (2007), 1(8), 1126-1133

Two in vitro experiments were carried out to quantify the incorporation of nitrogen (N) by pig colonic bacteria during the fermentation of dietary fibre, including non-starch polysaccharides and resistant ... [more ▼]

Two in vitro experiments were carried out to quantify the incorporation of nitrogen (N) by pig colonic bacteria during the fermentation of dietary fibre, including non-starch polysaccharides and resistant starch. In the first experiment, five purified carbohydrates were used: starch (S), cellulose (C), inulin (I), pectin (P) and xylan (X). In the second experiment, three pepsin–pancreatin hydrolysed ingredients were investigated: potato, sugar-beet pulp and wheat bran. The substrates were incubated in an inoculum, prepared from fresh faeces of sows and a buffer solution providing 15N-labelled NH4Cl. Gas production was monitored. Bacterial N incorporation (BNI) was estimated by measuring the incorporation of 15N in the solid residue at halftime to asymptotic gas production (T/2). The remaining substrate was analysed for sugar content. Short-chain fatty acids (SCFA) were determined in the liquid phase. In the first experiment, the fermentation kinetics differed between the substrates. P, S and I showed higher rates of degradation (P,0.001), while X and C showed a longer lag time and T/2. The sugar disappearance reached 0.91, 0.90, 0.81, 0.56 and 0.46, respectively, for P, I, S, C and X. Among them, S and I fixed more N per gram substrate (P,0.05) than C, X and P (22.9 and 23.2mg fixed N per gram fermented substrate v. 11.3, 12.3 and 9.8, respectively). Production of SCFA was the highest for the substrates with low N fixation: 562 and 565 mg/g fermented substrate for X and C v. 290 to 451 for P, I and S (P,0.01). In the second experiment, potato and sugar-beet pulp fermented more rapidly than wheat bran (P,0.001). Substrate disappearance at T/2 varied from 0.17 to 0.50. BNI were 18.3, 17.0 and 10.2 fixed N per gram fermented substrate, for sugar-beet pulp, potato and wheat bran, respectively, but were not statistically different. SCFA productions were the highest with wheat bran (913mg/g fermented substrate) followed by sugar-beet pulp (641) and potato (556) (P,0.05). The differences in N uptake by intestinal bacteria are linked to the partitioning of the substrate energy content between bacterial growth and SCFA production. This partitioning varies according to the rate of fermentation and the chemical composition of the substrate, as shown by the regression equation linking BNI to T/2 and SCFA (r250.91, P,0.01) and the correlation between BNI and insoluble dietary fibre (r520.77, P,0.05) when pectin was discarded from the database. [less ▲]

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See detailInfluence of purified dietary fibre on bacterial protein synthesis in the large intestine of pigs, as measured by the gas production technique.
Bindelle, Jérôme ULg; Buldgen, André; Michaux, David et al

in Livestock Science (2007), 109

Microbial fermentation of non-digestible carbohydrates in the pig's large intestine induces a shift of N excretion from urea in urine to bacterial protein in faeces. Experiments were carried out to ... [more ▼]

Microbial fermentation of non-digestible carbohydrates in the pig's large intestine induces a shift of N excretion from urea in urine to bacterial protein in faeces. Experiments were carried out to measure the mineral N incorporation by the pig intestinal microflora using 5 purified carbohydrates in a gas-test: starch (S), cellulose (C), inulin (I), pectin (P) and xylan (X). Fermentation kinetics was modelled. N source in the buffer solution was replaced by 15N labelled NH4Cl. The bacterial N fixation was determined at mid-fermentation, measuring 15N incorporation into the solid phase of the buffer. The bacterial N fixation was higher (Pb0.001) with I and S (19.9 and 18.1 mg N/g incubated DM), compared to P, C and X (8.7, 5.9 and 5.5 respectively). Inulin and S were fermented also more rapidly, even if I (0.081 h−1) and C (0.074 h−1) showed lower half time fractional rate of degradation than S (0.153 h−1), P (0.133 h−1) and X (0.104 h−1). The insoluble dietary fibre content of the substrates was negatively correlated to bacterial N fixation (r=−0.957, P=0.011). The high crude protein content of P (32.5 mg g−1DM) might explain the lower impact of this substrate on bacterial N fixation, despite its rapid fermentation. Beside the proportion of insoluble fibre, the N content and the rate of fermentation seem to be the major factors influencing bacterial protein synthesis. Further studies including ingredients with variable content of indigestible protein and mean retention time in the pig's intestines are necessary. [less ▲]

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See detailBacterial protein synthesis in the pig's large intestine varies according to the fermented non-starch polysaccharides.
Bindelle, Jérôme ULg; Leterme, Pascal; Destain, Jean-Pierre ULg et al

in Journal of Animal Science (2007), 85(Suppl. 2), 114-115

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See detailLes conseils de fumure azotée
Bodson, Bernard ULg; Destain, Jean-Pierre ULg; Vancutsem, Françoise ULg et al

in Fumure et Protection phytosanitaire des céréales (2006, February 22)

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See detailL'azote minéral du sol; sous froment d'hiver: Situation au 10 février 2006
Destain, Jean-Pierre ULg; Couvreur, Luc; Herman, Jean-Luc et al

in Fumure et Protection phytosanitaire des céréales (2006, February 22)

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See detailActualité dans le domaine de la fumure azotée; la fumure azotée en deux fractions: osez essayer!
Vancutsem, Françoise ULg; Bodson, Bernard ULg; Destain, Jean-Pierre ULg et al

in Fumure et Protection phytosanitaire des céréales (2006, February 22)

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See detailFongicides: les effets "extra-fongicides" des strobilurines en froment: mythe ou réalité?
Vancutsem, Françoise ULg; Bodson, Bernard ULg; Moreau, Jean-Marc et al

in Livre Blanc: Céréales - Gembloux - Informations avant les semis (2006, February 22)

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See detailPrivileging late dressing on winter wheat increases recovery and efficiency (yield and quality) of fertilizer N results of 3 years field experiments using stable 15N
Boulelouah, Nadia; Destain, Jean-Pierre ULg; Falisse, André et al

in Haneklaus, S.; Hera, Ch.; Hofman, G. (Eds.) et al Fertilizers and Fertilization: Stewardship for Food Security, Food Quality, Environment and Nature Conservation (2006, January 22)

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