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Quelle sélection fruitière pour une production durable, à faible niveau d’intrants ? Méthodologie pour un réseau de sélection variétale décentralisée

Brun, Laurent; Warlop, François; Mercier, Vincent; Broquaire, Jean-Michel; Clauzel, Guy; Gomez, Christelle; Parveaud, Claude-Eric and Audergon, Jean-Marc (2011) Quelle sélection fruitière pour une production durable, à faible niveau d’intrants ? Méthodologie pour un réseau de sélection variétale décentralisée. [What kind of fruit cultivar selection for a sustainable production under a low input level ?] Innovations Agronomiques, 18, pp. 10-15. [In Press]

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Online at: http://www.inra.fr/ciag/revue

Summary

In France Fruit production is cultivated on 140 thousand hectares, mainly conducted on intensive training system. Very few elements are available on low input training systems while they have to integrate the Global rule under the frame of Ecophyto 2018. In order to evaluate if another system of cultivation will be possible, a project has been developed to highlight the main factors to be integrated in low input training system. A low input multilocal experimental design has thus been investigated on apricot in two main regions of production: Rhone valley and Roussillon. A set of 9 common cultivars with 20 replications each, planted in a complete single-tree randomization design has been established.
As already observed in apple orchard, a larger set of disease has been observed in our experimental plots by comparison with conventional training orchards. A large genetic variability has been set-up among the observed cultivars, but if some of them expressed components of resistance against the observed diseases no one appeared widely resistant to all the diseases. Taking in consideration the longevity of the orchard, a huge concern exists with the tested germplasm because the observed dieback was in between 10 and 80% of the trees according to the cultivars after only 6 years of observation. On the methodological point of view, a clear optimization of the experimental design is expected on the base of the observed results.


EPrint Type:Journal paper
Keywords:cultivar fruit selection low input organic farming
Subjects: Knowledge management > Research methodology and philosophy > Systems research and participatory research
Crop husbandry > Production systems > Fruit and berries
Crop husbandry > Breeding, genetics and propagation
Crop husbandry > Crop health, quality, protection
Research affiliation: France > GRAB - Groupe de Recherche en Agriculture biologique
France > INRA - Institut National de la Recherche Agronomique
Deposited By: WARLOP, François
ID Code:20384
Deposited On:16 Jan 2012 09:43
Last Modified:27 Feb 2012 08:19
Document Language:French - Francais
Status:In Press
Refereed:Not peer-reviewed

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