Impact of a cultivar mixture on scab, powdery mildew and rosy aphid in an organic apple orchard

Autor: Laurent Brun, Christelle Gomez, Freddy Combe, Luciana Parisi, Christophe Gros, Claude-Eric Parveaud
Přispěvatelé: Unité Expérimentale Recherches Intégrées - Gotheron (UERI), Institut National de la Recherche Agronomique (INRA), GRAB, ANR-06-PADD-59000122, GéDuPIC, French ministry of agriculture, Rhône-Alpes region, Parisi, Luciana, Brun, Laurent
Rok vydání: 2013
Předmět:
litière végétale
mélanges de cultivars
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
0106 biological sciences
insecte nuisible
resistance aux pathogenes et ravageurs
résistance aux insectes
insecte parasite
Organic production
01 natural sciences
maladie fongique
puceron rose du pommier
production organique de pommes
pratique d'assainissement
maladies fongiques
puceron Rosy
gestion des maladies
Cultivar
gale
interaction plante hôte puceron
2. Zero hunger
0303 health sciences
Aphid
Mildew
oïdium du pommier
résistance aux parasites
biology
insecte ravageur
résistance aux bioagresseurs
food and beverages
Agricultural sciences
production biologique
pomme
assainissement
puceron
drome
mildiou
Orchard
france
Powdery mildew
mélange de cultivars
verger de pommes
pommier
Context (language use)
développement de la maladie
inoculum primaire
03 medical and health sciences
venturia inaequalis
interaction plante hôte parasite
030304 developmental biology
fungi
Moderate level
biology.organism_classification
Agronomy
vallée du rhone
tavelure du pommier
Agronomy and Crop Science
Sciences agricoles
010606 plant biology & botany
Zdroj: Crop Protection
Crop Protection, Elsevier, 2013, pp.207-212. ⟨10.1016/j.cropro.2012.09.014⟩
Crop Protection 43, 207-212. (2013)
ISSN: 0261-2194
1873-6904
DOI: 10.1016/j.cropro.2012.09.014
Popis: International audience; The impact of a cultivar mixture within the rows including the cvs Melrouge (low susceptibility to scab) and Pitchounette (Rvi6 resistant) was assessed during 2008e2009 in an organic apple orchard located in Rhône Valley (Drôme, France), on three important pests and diseases: scab, powdery mildew and rosy apple aphid. In this area, the resistance of Rvi6 gene was effective since the orchard plantation in 2004. The impact of the cultivar mixture was assessed per se, but also associated with sanitation practices to decrease the primary inoculum of scab and mildew, and compared to disease development on pure stands of Melrouge. The cultivar mixture showed a good efficiency to decrease the scab incidence on leaves and fruits; a significant effect on scab severity was observed in 2009 for the cultivar mixture plus sanitation practices. Our data confirmed the different susceptibility levels of the two cultivars for powdery mildew. Against powdery mildew, a favourable effect of cultivar mixture, at the condition it is associated with sanitation, was observed in case of a moderate level of the disease (2008). For rosy apple aphid, a favourable effect of cultivar mixture was observed on Melrouge in 2008 when Pitchounette has a good resistance level. In the context of organic production, the impact of the cultivar mixture seemed favourable for the control of the three pests and diseases.
Databáze: OpenAIRE
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