References of "Biotechnologie, Agronomie, Société et Environnement"
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See detailÉtat des connaissances sur les céphalophes (genres Cephalophus et Philantomba) des forêts denses humides d’Afrique centrale (synthèse bibliographique)
Houngbegnon, Fructueux ULiege; Sonké, Bonaventure; Vermeulen, Cédric ULiege et al

in Biotechnologie, Agronomie, Société et Environnement (2019)

Introduction. This article provides a synthesis of current knowledge on classification, ecology and biology of duikers living in central African rainforests (genera Cephalophus and Philantomba). It also ... [more ▼]

Introduction. This article provides a synthesis of current knowledge on classification, ecology and biology of duikers living in central African rainforests (genera Cephalophus and Philantomba). It also provides an update on the anthropogenic pressures on these terrestrial mammals. Literature. Many publications on central African duikers are focused on subsistence or commercial hunting, and poaching. As the taxonomic classification of duikers has recently been revised, new species have been described with very little information available on their ecology. This synthesis highlights the gaps in the scientific knowledge and proposes priority themes for future research. Conclusions. Although many aspects remain to be explored for some species (i.e., habitat use, home range), it is suggested to investigate in priority: the inventory methods, the role of duikers in forest dynamics, and the impact of logging on their populations. [less ▲]

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See detailOak or chestnut tannin dose responses on silage pH, proteolysis and in vitro digestibility in laboratory-scale silos
Herremans, Sophie ULiege; Decruyenaere, Virginie; Beckers, Yves ULiege et al

in Biotechnologie, Agronomie, Société et Environnement (2019), 23(2), 59-62

Description of the subject. This short note documents the use of hydrolyzable tannins as silage additives to reduce proteolysis thanks to a laboratory-scale ensiling method. Objectives. To study oak (OTE ... [more ▼]

Description of the subject. This short note documents the use of hydrolyzable tannins as silage additives to reduce proteolysis thanks to a laboratory-scale ensiling method. Objectives. To study oak (OTE) and chestnut tannin extract (CTE) dose responses on chemical composition, pH and ammoniacal nitrogen (N-NH3) content of silage. Method. A mixture of cocksfoot, white and red clovers was ensiled in vacuum packs, with OTE or CTE at doses of 0, 10, 30, 50 and 70 g.kg-1 DM. Results. Hydrolyzable tannin extracts decreased N-NH3 content of silage up to 18% (p < 0.05). For the investigated range of doses, OTE induced a linear decrease of N-NH3 content (R² = 0.76) whereas CTE resulted in a quadratic decrease (R² = 0.68). High doses of tannin extracts reduced in vitro organic matter digestibility (OMD) by 3% (p < 0.05). Conclusions. Both tannins reduced proteolysis in silos but highest doses induced a decrease in OMD. [less ▲]

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See detailA methodology to quantify aerobic and anaerobic sludge digestion performances for nutrient recycling in aquaponics
Delaide, Boris ULiege; Goddek, Simon; Keesman, Karel et al

in Biotechnologie, Agronomie, Société et Environnement (2018), 22(2), 106-112

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See detailComparaison de la dérive pour deux types de pulvérisateurs utilisés en production cotonnière au Bénin
Gouda, Abdoul-Ibrachi ULiege; Mehoba, Mahodjègbé Hermas Luc; Toko, Ibrahim Imorou et al

in Biotechnologie, Agronomie, Société et Environnement (2018), 22(2),

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See detailFaire évoluer une revue scientifique dans un monde changeant
Pochet, Bernard ULiege; Berben, Gilbert; Vermeulen, Cédric ULiege

in Biotechnologie, Agronomie, Société et Environnement (2018), 28(3), 131-135

After a brief historical review, this article presents the current situation of the journal BASE, its objectives, its challenges, its functioning and its limitations. BASE is a journal that publishes ... [more ▼]

After a brief historical review, this article presents the current situation of the journal BASE, its objectives, its challenges, its functioning and its limitations. BASE is a journal that publishes articles in Open Access in the field of agronomic sciences in the broad sense and offers a free service to authors. The editorial board pays particular attention to the transparency of its validation and editing processes. The figures presented allow BASE to find its place alongside all international scientific journals. At the end of the article, after describing the difficulties encountered, several perspectives are described. These should address the possible disadvantages of the multidisciplinary nature of BASE. [less ▲]

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See detailLa croissance du bovin Azawak au Niger : influence de facteurs de variation non génétiques et estimation des paramètres génétiques
Siddo, Seyni; Moula, Nassim ULiege; Hamadou, Issa et al

in Biotechnologie, Agronomie, Société et Environnement (2018), 22(2),

Description of the subject. The effects of both non-genetic factors and of genetic parameters on the growth traits of Azawak cattle in Niger were estimated from performance data collected on animals ... [more ▼]

Description of the subject. The effects of both non-genetic factors and of genetic parameters on the growth traits of Azawak cattle in Niger were estimated from performance data collected on animals raised in the Toukounous animal breeding station. Objectives. Following on from the results obtained, a model to predict breeding values of breeding stocks is to be developed. Method. The influence of non-genetic factors and of genetic parameters was estimated using a fixed effects linear model and a multi character animal model (REML), respectively. Results. Sex, season and year of birth, and their interactions had a significant effect (p <0.05) on weight from birth to 20 months and average daily gains from birth to 12 months (ADG12) and to 18 months (ADG18). Heritability was moderate for birth weight (0.20) and for weight at 12, 14 and 20 months (0.15 to 0.43), whereas it was higher for weight at 13 months (0.61), gradually as the interval between weighing increased. All genetic correlations were positive except those between ADG12 and weight at 17 months and between ADG12 and ADG18. Environmental correlations followed the same trends as genetic correlations. Conclusions. Heritability of weight and gains was moderate to high, indicating that an improvement in meat production could be obtained from selection according to growth performance. [less ▲]

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See detailDeveloping a scientific journal in a changing world
Pochet, Bernard ULiege; Berben, Gilbert; Vermeulen, Cédric ULiege

in Biotechnologie, Agronomie, Société et Environnement (2018), 22(4), 203-207

After a brief historical overview, this article presents the current situation of the journal BASE, its objectives, its challenges, its functioning and its limitations. BASE is a journal that publishes ... [more ▼]

After a brief historical overview, this article presents the current situation of the journal BASE, its objectives, its challenges, its functioning and its limitations. BASE is a journal that publishes articles in open access in the field of agricultural sciences in the broad sense and offers a free service to authors. The editorial board pays particular attention to the transparency of its validation and editing processes. The data presented allow BASE to be compared with other international scientific journals. At the end of the article, after outlining some of the difficulties encountered, several prospects are described that should address the disadvantages arising from the multidisciplinary nature of BASE. [less ▲]

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See detailForest mapping and species composition using supervised per pixel classification of Sentinel-2 imagery
Bolyn, Corentin; Michez, Adrien ULiege; Gaucher, Peter ULiege et al

in Biotechnologie, Agronomie, Société et Environnement (2018), 22(3), 16

Description of the subject.Understanding the current situation and evolution of forests is essential for a sustainable management plan that maintains forests’ ecological and socio-economic functions ... [more ▼]

Description of the subject.Understanding the current situation and evolution of forests is essential for a sustainable management plan that maintains forests’ ecological and socio-economic functions. Remote sensing is a helpful tool in developing this knowledge. Objectives. This paper investigates the new opportunities offered by using Sentinel-2 (S2) imagery for forest mapping in Belgian Ardenne ecoregion. The first classification objective was to create a forest map at the regional scale. The second objective was the discrimination of 11 forest classes (Fagus sylvatica L., Betula sp., Quercus sp., other broad-leaved stands, Pseudotsuga menziesii (Mirb.) Franco, Larix sp., Pinus sylvestris L., Picea abies (L.) H.Karst., young needle-leaved stands, other needle-leaved stands, and recent clear-cuts). Method. Two S2 scenes were used and a series of spectral indices were computed for each. We applied supervised pixel based classifications with a Random Forest classifier. The classification models were processed with a pure S2 dataset and with additional 3D data to compare obtained precisions. Results. 3D data slightly improved the precision of each objective, but the overall improvement in accuracy was only significant for objective 1. The produced forest map had an overall accuracy of 93.3%. However, the model testing tree species discrimination was also encouraging, with an overall accuracy of 88.9%. Conclusions. Because of the simple analyses done in this study, results need to be interpreted with caution. However, this paper confirms the great potential of S2 imagery, particularly SWIR and red-edge bands, which are the most important S2 bands in our study. [less ▲]

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See detailPlantes pesticides et protection des cultures maraichères en Afrique de l’Ouest (synthèse bibliographique)
Yarou, Boni Barthélémy ULiege; Silvie, Pierre; Assogba Komlan, Françoise et al

in Biotechnologie, Agronomie, Société et Environnement (2017), 21(4), 288-304

Introduction. Les cultures maraichères occupent une place importante pour l’alimentation humaine et contribuent significativement aux revenus des familles en Afrique de l’Ouest, mais leur production est ... [more ▼]

Introduction. Les cultures maraichères occupent une place importante pour l’alimentation humaine et contribuent significativement aux revenus des familles en Afrique de l’Ouest, mais leur production est confrontée à une pression des bioagresseurs qui limite leur productivité. Littérature. Cette revue, basée sur des publications scientifiques, a pour objectif d’évaluer le potentiel des plantes pesticides comme alternative à l’usage des pesticides de synthèse pour lutter contre les bioagresseurs des cultures maraichères en Afrique de l’Ouest. Elle montre que le principal moyen actuel pour combattre ces bioagresseurs repose essentiellement sur les pesticides de synthèse. Cependant, compte tenu de leur nocivité sur l’homme et l’environnement, en plus de la sélection de populations résistantes chez les bioagresseurs, la recherche de solutions alternatives s’impose. Les plantes pesticides se présentent comme une alternative prometteuse dans le contexte ouest-africain. En effet, diverses espèces de plantes pesticides peuvent être utilisées comme extraits de plantes ou en association avec d’autres cultures pour le contrôle des bioagresseurs. Celles-ci sont présentées dans le présent article de synthèse. Conclusions. Les plantes pesticides peuvent être une alternative prometteuse pour la gestion des bioagresseurs des cultures maraichères. Cependant, la plupart d’entre elles ne sont pas cultivées. Explorer les capacités biocides de plantes d’intérêt comme le genre Ocimum, connu pour ses usages thérapeutique, médicinal et alimentaire pourrait être intéressant pour le producteur. Toutefois, les populations doivent être sensibilisées sur les avantages à long terme des produits traités avec les pesticides à base de plantes pour faciliter leur utilisation. [less ▲]

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See detailCow milk coagulation: process description, variation factors and evaluation methodologies. A review.
Troch, Thibault ULiege; Lefebure, Emilie ULiege; Baeten, Vincent et al

in Biotechnologie, Agronomie, Société et Environnement (2017), 21

Introduction. For dairy producers who want to transform their milk, the ability of milk to coagulate is an important parameter. It makes it possible to transform milk into cheese. Therefore, it is ... [more ▼]

Introduction. For dairy producers who want to transform their milk, the ability of milk to coagulate is an important parameter. It makes it possible to transform milk into cheese. Therefore, it is necessary to understand the coagulation process and the techniques to measure it in order to achieve the best transformation performance. The objective of this review is to describe the milk coagulation process, the factors influencing it and the methods for measuring the coagulation of milk at lab level. Literature. The processing of milk into cheese involves three steps: coagulation, dewatering and refining. Coagulation is a key step which involves the use of rennet and depends on several parameters (pH, calcium content, temperature, etc.). Some milks never coagulate. To measure the coagulation ability of milk and identify different parameters in milk coagulation properties, the Formagraph, the computerized renneting meter and the Optigraph have been developed (reference methods). Equations have been developed using infrared spectrometry to predict the parameters obtained by the reference methods. Conclusions. The milk coagulation mechanism is known. However, the issue of non-coagulating milk persists and represents a real challenge in terms of yield. The use of infrared is a faster alternative to reference methods that measure the coagulation properties of milk, but still requires an improvement in prediction equations. [less ▲]

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See detailEntandrophragma cylindricum (Sprague) Sprague (Meliaceae), une espèce ligneuse concurrentielle en Afrique centrale (synthèse bibliographique)
Tabi Eckebil, Paule ULiege; Verheggen, François ULiege; Doucet, Jean-Louis ULiege et al

in Biotechnologie, Agronomie, Société et Environnement (2017), 21(1), 80-97

Introduction. De nos jours, la gestion des ressources forestières ne se focalise plus sur l’exploitation exclusive du bois d’oeuvre, mais prend également en considération les produits forestiers non ... [more ▼]

Introduction. De nos jours, la gestion des ressources forestières ne se focalise plus sur l’exploitation exclusive du bois d’oeuvre, mais prend également en considération les produits forestiers non ligneux. Entandrophragma cylindricum (Sprague) Sprague, de son nom commercial « sapelli/sapele », de la famille des Meliaceae, illustre parfaitement cette situation. Le présent article fait un état de l’art des connaissances concernant E. cylindricum et présente quelques informations sur la chenille qui lui est inféodée. Littérature. Le sapelli est une des espèces ligneuses les plus exploitées d’Afrique centrale pour son bois d’oeuvre. Il est répandu dans la forêt dense humide semi-caducifoliée du domaine guinéo-congolais. C’est une espèce semi-héliophile, son mode de dispersion est anémochore et sa phénologie est régulière. Selon la sylviculture appliquée, sa croissance en diamètre peut atteindre jusque 0,82 cm par an. Cette essence est également l’hôte d’une espèce de chenille comestible riche en protéines, I. oyemensis Rougeot. Fortement appréciée par les populations locales, cette chenille fait également l’objet d’un commerce régional et international. Enfin, l’écorce du sapelli est reconnue pour son intérêt ethnobotanique, particulièrement en médecine traditionnelle. Conclusions. Les informations tirées de la littérature ont permis de mettre en évidence certaines lacunes relatives à l’écologie et au mode de reproduction de cette espèce et, ceci, en dépit de son importance pour le commerce du bois. De plus, les inconnues quant à la productivité et la saisonnalité des chenilles d’Imbrasia oyemensis sur cet arbre nécessitent de développer des recherches complémentaires pour garantir la durabilité de l’exploitation simultanée de la ressource ligneuse et non ligneuse et pour proposer des modes de gestion concertés entre exploitants industriels et populations locales. [less ▲]

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See detailLe rôle des rongeurs dans la dispersion des diaspores en milieu forestier (synthèse bibliographique)
Evrard, Quentin ULiege; Haurez, Barbara ULiege; Doucet, Jean-Louis ULiege

in Biotechnologie, Agronomie, Société et Environnement (2017)

Introduction. Seed dispersal is a key interaction that influences a number of ecological processes that are important to the maintenance of diversity in forest ecosystems. Rodents, mainly considered as ... [more ▼]

Introduction. Seed dispersal is a key interaction that influences a number of ecological processes that are important to the maintenance of diversity in forest ecosystems. Rodents, mainly considered as seed predators, can carry, hide and discard seeds, often transporting them over considerable distances from the parent tree and thus leading to an enhanced germination rate. The role of rodents on forest regeneration therefore depends upon several environmental variables influencing their behavior. Literature. Many publications demonstrate that rodents are mostly seed predators for many species. Nevertheless, because it is hard to define their movement pattern, the role of rodents on regeneration could be underestimated. Through scatter-hoarding, rodents may play a crucial role, particularly in those forests where anthropogenic pressures have led to a reduction in the density of large mammals. However, very few studies have been conducted in African moist forests where defaunation can be high, and the role of rodents has been very poorly studied. Conclusions. To understand the phenomenon, we suggest to further investigate the interactions between seeds and rodents by employing methods that have been commonly used on other continents. [less ▲]

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See detailRôles et caractéristiques morphologiques du ver de terre Eudrilus eugeniae
Byambas, Patrick; Lemtiri, Aboulkacem ULiege; Hornick, Jean-Luc ULiege et al

in Biotechnologie, Agronomie, Société et Environnement (2017), 21(2), 160--170

Introduction. Eudrilus eugeniae est un ver épigé d’origine africaine. Il est principalement rencontré dans les pays tropicaux et subtropicaux, et est utilisé dans les processus de lombriculture et de ... [more ▼]

Introduction. Eudrilus eugeniae est un ver épigé d’origine africaine. Il est principalement rencontré dans les pays tropicaux et subtropicaux, et est utilisé dans les processus de lombriculture et de lombricompostage. Littérature. Le développement de l’utilisation et de l’exploitation du ver nécessite un approfondissement des connaissances s’y rapportant pour optimiser la production des vers et du lombricompost. Cette synthèse bibliographique a été initiée pour faciliter la valorisation agronomique de l’espèce au Gabon et améliorer les connaissances actuelles sur E. eugeniae. Elle pourrait faciliter l’élaboration d’une clé d’identification spécifique à E. eugeniae, à l’instar de celles qui existent pour d’autres espèces. Conclusions. La synthèse des connaissances disponibles sur le ver de terre E. eugeniae devrait faciliter son exploitation et sa valorisation dans les pays comme le Gabon où l’étude de ce ver de terre est récente. [less ▲]

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See detailLa gestion de la matière organique du sol, un enjeu important pour limiter la lixiviation du nitrate vers les eaux souterraines
Vandenberghe, Christophe ULiege; Colinet, Gilles ULiege

in Biotechnologie, Agronomie, Société et Environnement (2017), 21

Description of the subject. The nitrate concentration in half of the groundwater bodies of the Walloon Region (Belgium) has justified their classification as vulnerable zones under the Nitrates Directive ... [more ▼]

Description of the subject. The nitrate concentration in half of the groundwater bodies of the Walloon Region (Belgium) has justified their classification as vulnerable zones under the Nitrates Directive (ND). This vulnerable area has a relatively high diversity of agro-soil environments. Thus, the nitrogen content of agricultural soils can vary locally by a factor 4. Objectives. This study aimed to establish whether the carbon content of a soil is a significant risk factor in nitrate leaching to groundwater. Method. The article is based on measurements of nitrate nitrogen residue (APL) and soil total organic carbon (TOC) at the beginning of the leaching period. The measurements were made in 2012 in 1,500 plots, during inspections organized by the Wallonia Public Service. This was as part of the application of the Program for the Sustainable Management of Nitrogen in Agriculture, the scheme for implementing the ND within the Walloon region. Results. Examination of the results showed both that the APL was positively correlated to the TOC and that plots with “noncompliant” APL results had a significantly higher average TOC than the other plots. Conclusions. Since APL is an environmental indicator of the risk of nitrate leaching, it appears that the TOC may constitute a risk of groundwater contamination by nitrate. It is therefore advisable to improve the inclusion of this parameter in advice regarding nitrogen fertilization and secondly, in the case of summer harvest, to better manage the sowing of catch crops. [less ▲]

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See detailNorthern range edge equilibrium of Ambrosia artemisiifolia L. Not achieved in Western Europe
Ortmans, William; Mahy, Grégory ULiege; Monty, Arnaud ULiege

in Biotechnologie, Agronomie, Société et Environnement (2017), 21(1),

Description of the subject. The geographic distributions of a species, be it native or alien, is expected to be limited at some point by environmental conditions. In this situation, a range edge ... [more ▼]

Description of the subject. The geographic distributions of a species, be it native or alien, is expected to be limited at some point by environmental conditions. In this situation, a range edge equilibrium (REE) takes place, i.e., populations occurring beyond the edge have a growth rate reduced below replacement. The occurrence of REE has never been tested for an invasive species. In Western Europe, the invasive weed Ambrosia artemisiifolia L. has spread in most parts of southern and central France, where it can be found in very high densities in sunflower fields, but seems to be limited in its northwards expansion. It is currently unknown whether the range has reached a limit or not. Information about how the species responds to sunflower competition is also lacking. Objectives. This work addressed two questions: Has the northern part of A. artemisiifolia invaded range in Western Europe reached REE? How is A. artemisiifolia performance influenced by sunflower competition? Method. Plots were established in an agricultural field ca. 250 km north to the current invaded range, in Belgium. We planted A. artemisiifolia seedlings with or without sunflower competition. The following year, the population growth rates and the soil seed bank were assessed. Results. The species established populations with relatively high growth rates and soil seed bank. Sunflower competition did not have a significant impact on plant performance. Conclusions. The results invalidate the hypothesis of equilibrium at the current margin of A. artemisiifolia invaded range, and suggest a significant potential for invasion northwards. [less ▲]

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See detailIdentification of sprinkling storage facilities for windblown timber using a GIS-based modeling approach
Riguelle, Simon ULiege; Jourez, Benoît ULiege; Hebert, Jacques ULiege et al

in Biotechnologie, Agronomie, Société et Environnement (2017), 21(2),

After catastrophic storm events, the storage of windblown timber is an effective measure for mitigating economic losses in the forest sector by preventing wood decay, protecting stands from secondary ... [more ▼]

After catastrophic storm events, the storage of windblown timber is an effective measure for mitigating economic losses in the forest sector by preventing wood decay, protecting stands from secondary damage, and regulating the timber supply in the middle and long term. In this study, we first propose a GIS-based methodology for identifying suitable sprinkling storage terminals in Wallonia (Belgium). In addition, we suggest an approach for building a coherent regional network as well as methods for selecting and activating terminals within this network after a storm, depending on the severity and distribution of the damage. The GIS-based approach was used to crosscheck technical requirements related to sprinkling storage according to operational and environmental constraints in the Ardenne, which is the most forested sub-region of Wallonia. A three-step process was employed to identify suitable areas. Nine procurement areas were also delineated according to the regional forest inventory plots as a reference for choosing the terminals that should be included in the regional network and activated after the storm. We generated and evaluated 96 scenarios. In the second step, a network of 30 terminals was suggested, which corresponded to a storage capacity of 4 million m³. This network could facilitate the flexibility in the strategic management of storage after huge storms. The procurement area approach also helps addressing routing and transportation issues in a simple way. The GIS approach facilitates the selection of sprinkling storage terminals, but field validation and enhanced collaboration between public and private landowners and forest owners would still be needed. [less ▲]

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See detailSoil organic carbon fractionation for improving agricultural soil quality assessment – a case study in Southern Belgium (Wallonia)
Trigalet, Sylvain; Chartin, Caroline; Krüger, Inken ULiege et al

in Biotechnologie, Agronomie, Société et Environnement (2017), 21(S1),

Description of the subject. The paper presents and discusses a method for fractionating bulk soil organic carbon (SOC) in meaningful SOC fractions to better assess SOC status and its related soil ... [more ▼]

Description of the subject. The paper presents and discusses a method for fractionating bulk soil organic carbon (SOC) in meaningful SOC fractions to better assess SOC status and its related soil ecosystem functions. Objectives. The objective is to perform an evaluation of ecosystem functions of soil organic matter at plot scale and compare it to the normal operative range of the local agro-ecological region. Method. By separating carbon associated with clay and fine silt particles (stable carbon with slow turnover rate, < 20 μm) and carbon non-associated with this fraction (labile and intermediate carbon with higher turnover rates, ≥ 20 μm), effects of management can be detected more efficiently at different scales. Conclusions. Soil organic carbon fractions, used as proxies for soil ecosystem functions, can be helpful because they represent SOC functional pools. This paper proposes to apply fractionation on samples taken at plot and regional scale. It is therefore possible to establish a normal operative range for a specific agro-region for comparison with the values in individual plots. This allows drawing a baseline for SOC fractions status in a specific agricultural unit. This approach provides valuable information to study and evaluate the impact of agricultural management in the context of enhancing soil quality and functions. [less ▲]

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See detailAgro-physiological and biochemical responses of faba bean (Vicia faba L. var. 'minor') genotypes to water deficit stress
Abid, Ghassen; Hessini, Kamel; Aouida, Marwa et al

in Biotechnologie, Agronomie, Société et Environnement (2017), 21(2),

Drought is one of the major abiotic factors affecting growth and productivity of plants by imposing certain morphological, physiological and biochemical changes at different growth stages. The objective ... [more ▼]

Drought is one of the major abiotic factors affecting growth and productivity of plants by imposing certain morphological, physiological and biochemical changes at different growth stages. The objective of this work is to study key morphological, physiological and biochemical response of faba bean (Vicia faba L. var. 'minor') to soil water deficit stress and to assess the contribution of genetic factors in improving faba bean tolerance to water deficit. Plant of 11 faba bean cultivars were grown in the greenhouse and subjected to three levels of water deficit (90, 50 and 30% of field capacity (FC)) in a simple randomized design for 20 days. Water deficit effects on plant growth, relative water content (RWC), gaz exchange, chlorophyll a (Chla) and Chlorophyll b (Chlb) content, osmoprotectant accumulations (such as proline and soluble sugars), antioxydant enzyme activities and grain yield were determined. Soil water deficit stress reduced growth and affected physiological parameters, especially antioxidant enzyme activities. Water deficit also increased proline, soluble sugars and protein contents. The studied cultivars significantly differed in their responses to water deficit stress. Photosynthetic parameters were less affected in the 'Hara' cultivar. Furthermore, this cultivar produced the highest value of grain yield at 30% FC, and showed higher antioxidant enzyme activities (CAT, GPX and APX), osmoprotectant accumulations, Chlb and RWC. The 'Hara' cultivar was found to be more tolerant to water deficit stress than the other cultivars. Our methodology can be used for assessing the response of faba bean genetic resources to soil water deficit. The identified tolerant cultivar can be utilized as a source for water stress tolerance in faba bean breeding programs aimed at improving drought tolerance. [less ▲]

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See detailRemoval of acorns of the alien oak Quercus rubra on the ground by scatter-hoarding animals in Belgian forests
Merceron, N. R.; De Langhe, A.; Dubois, Héloïse ULiege et al

in Biotechnologie, Agronomie, Société et Environnement (2017), 21(2), 127-130

Description of the subject. Quercus rubra L. is considered an invasive species in several European countries. However, little is known about its dispersal in the introduced range. Objectives. We ... [more ▼]

Description of the subject. Quercus rubra L. is considered an invasive species in several European countries. However, little is known about its dispersal in the introduced range. Objectives. We investigated the significance of animal dispersal of Q. rubra acorns on the ground by vertebrates in its introduced range, and identified the animal species involved. Method. During two consecutive autumns, the removal of acorns from Q. rubra and from a native oak was assessed weekly in forest sites in Belgium. We used automated detection camera traps to identify the animals that removed acorns. Results. Quercus rubra acorns were removed by wood mice (Apodemus sylvaticus L.), red squirrels (Sciurus vulgaris L.), rats (Rattus sp.), and wild boars (Sus scrofa L.). The two former are scatter-hoarding rodents and can be considered potential dispersers. Conclusions. Dispersal of Q. rubra acorns in Western Europe by scatter-hoarding animals may help the species increasingly colonize forest ecosystems. © 2017, FAC UNIV SCIENCES AGRONOMIQUES GEMBLOUX. All rights reserved. [less ▲]

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See detailL’intégration d’indicateurs biologiques dans un réseau de surveillance des sols afin d’améliorer le diagnostic de la qualité du sol – une étude de cas dans le sud de la Belgique (Wallonie)
Krüger, Inken ULiege; Chartin, Caroline; van Wesemael, Bas et al

in Biotechnologie, Agronomie, Société et Environnement (2017), 21(S1),

Soil organisms and their activities are essential for soil ecosystem functioning and they can thus be used as pertinent indicators of soil quality. Recent efforts have been undertaken to include ... [more ▼]

Soil organisms and their activities are essential for soil ecosystem functioning and they can thus be used as pertinent indicators of soil quality. Recent efforts have been undertaken to include biological indicators of soil quality into regional/national monitoring networks. Objectives. The aim of this study was to provide a first dataset of six biological indicators and two eco-physiological quotients for two landscape units in Wallonia. These spatial units are characterized by homogeneous climate conditions, soil type, land-use and management (here, grasslands in the Ardennes, and croplands in the Loam Region). Method. Respiration potential, microbial biomass carbon and nitrogen, net nitrogen mineralization, metabolic potential of soil bacteria and earthworm abundance were measured at a total of 60 sites in two different landscape units (LSU). Variability within each LSU was studied. Data was synthesized through calculation of a comprehensive score and presentation as radar plots. Results. All selected biological indicators were significantly higher under grassland than under cropland soils, highlighting the biological indicators’ power of discrimination between main land use types. Variability within LSU depended on the biological indicator and was generally higher in grassland than in cropland soils. Each site could unambiguously be assigned to its landscape unit based on its calculated comprehensive score. Radar plots allowed an assessment of the distribution of values within a landscape unit at a glance. Conclusions. The pilot-study defined the first baseline values for agricultural soils in Wallonia and laid the foundation for a monitoring network of biological soil quality. [less ▲]

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