Poster (Scientific congresses and symposiums)
Effects of tillage practices and crop residue exportation on earthworm communities and soil physico-­chemical properties in silt loam arable soil (Belgium)
Lemtiri, Aboulkacem; Colinet, Gilles; Alabi, Taofic et al.
201420th World Congress of Soil Science
 

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Keywords :
Conventional tillage; Reduced tillage; Straw management; Earthworm ecological groups; Soil physico-chemical properties; Soil compaction; Soil nutrient dynamics
Abstract :
[en] Earthworms are known to play integral roles in soils, and are often referred to as vital soil and ecosystem engineers due to their capacity to influence a wide range of chemical, physical, and biological properties of soil environments. Therefore, it is important to understand how earthworm communities are impacted by tillage systems and crop management practices. In the present study, earthworm and soil samples were collected from wheat cultivated fields in Gembloux, Belgium under the following four experimental treatments: (1) conventional tillage with crop residues left in the soil (CT/IN); (2) conventional tillage with crop residues removed from the field (CT/OUT); (3) reduced tillage with crop residues left in the soil (RT/IN); and (4) reduced tillage with crop residues removed from the field (RT/OUT). The different tillage systems were applied for four consecutive years prior to the initiation of the current study. Results indicated soil compaction was significantly higher in RT compared with CT up to a depth of 6–49 cm. Significant differences were not detected between residue incorporation depth systems, where results showed mean earthworm abundance was respectively 182.25 and 180 individuals.m-2 in CT and RT. Mean earthworm biomass was similarly not significantly different between CT and RT, where results were respectively 48.52 and 57.27 g.m-2. However, a significant difference was observed between IN and OUT treatments, suggesting the exportation of wheat residues will limit earthworm abundance and biomass in CT and RT plots. Data showed high representation of the endogeic earthworm ecological category, notably N. c. caliginosus regardless of treatment. Despite tillage system and exportation of crop residues, N. c. caliginosus, L. terrestris, and A. r. rosea exhibited high abundance, indicating tolerance to soil environmental conditions. For each depth, measures of soil physico-chemical properties showed significant differences among treatments. Furthermore, soil chemical property attributes were significantly higher in the first soil centimetres compared to lower soil layers. These results were attributable to earthworm activity and wheat residues, suggesting earthworms contributed to nutrient dynamics, particularly at increased soil depths. Overall, the results emphasise the influence of exportation of crop residues on earthworm community and also, the important influence of earthworm activity on soil physico-chemical properties change, processes which are closely linked.
Disciplines :
Agriculture & agronomy
Author, co-author :
Lemtiri, Aboulkacem ;  Université de Liège - ULiège > Sciences et technologie de l'environnement > Systèmes Sol-Eau
Colinet, Gilles  ;  Université de Liège - ULiège > Sciences et technologie de l'environnement > Systèmes Sol-Eau
Alabi, Taofic ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Bodson, Bernard ;  Université de Liège - ULiège > Sciences agronomiques > Phytotechnie des régions tempérées
olivier, claire;  Walloon Agricultural Research Centre – Gembloux, Belgium > Soil Fertility and Water Protection
Brostaux, Yves  ;  Université de Liège - ULiège > Sciences agronomiques > Statistique, Inform. et Mathém. appliquée à la bioingénierie
Pierreux, Jérome ;  Université de Liège - ULiège > Sciences agronomiques > Phytotechnie des régions tempérées
Haubruge, Eric  ;  Université de Liège - ULiège > Vice-Recteur de Gembloux Agro Bio Tech
Francis, Frédéric  ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Cluzeau, Daniel;  Université Européenne de Bretagne (Rennes) > UMR CNRS/URennes1 EcoBio, Station Biologique
Language :
English
Title :
Effects of tillage practices and crop residue exportation on earthworm communities and soil physico-­chemical properties in silt loam arable soil (Belgium)
Alternative titles :
[en] Effects des pratiques agricoles et de l'incorporation des résidues de culture sur les communautés lombriciennes et les caractéristiques physic-chimiques en sols limoneux en Belgique
Publication date :
08 June 2014
Number of pages :
A5
Event name :
20th World Congress of Soil Science
Event place :
Jeju, South Korea
Event date :
Du 8 au 13 Juin 2014
By request :
Yes
Audience :
International
Funders :
ULiège - Université de Liège [BE]
Available on ORBi :
since 27 July 2014

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