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Last update: May 2021

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Vidéos vers de terre

Vidéos vers de terre
© PiScope - UMR Agronomie
Le PiScope a été utilisé pour essayer d'identifier la cause de l'attaque d'une parcelle du dispositif SIC alors que la méthode classique de piégage préventif n'a pas réussi à en déterminer la cause.

Nous avons installé le PiScope dans une parcelle du dispositif SIC (Systèmes de Culture Innovant sous Contraintes). La parcelle sous surveillance est cultivée selon un système de culture « énergie moins » visant une réduction de 50 % de la consommation d’énergie par rapport à notre référence. Pour répondre à cet objectif, nous ne réalisons plus de travail du sol depuis l’installation du dispositif en 2008.

Les vidéos suivantes illustrent la forte activité des vers de terre en surface, notamment autour des débris de navette volontairement déposés à la surface du sol. Elles ont été prises entre fin septembre et début octobre 2017, en période d'interculture, après une récolte de blé.

Nocturne parmi des feuilles de navettes au sol

Des feuilles entières de navettes ont été disposées à la surface du sol sous le PiScope 2. La réaction des vers de terre nous a étonnés.

Nocturne autour d'une jeune pousse de navette

Le PiScope 2 a été placé sur une jeune pousse de navette et filme le comportement de la faune autour de cette plantule.

Nocturne parmi des fragments de feuilles de navette

Compte tenu du comportement des vers de terre sur la première vidéo, nous avons disposé sur le sol des fragments de navettes au lieu de feuilles entières.