Realistic Global Scouting for Pests and Diseases on Cut Rose Crops

Alexandre Bout (), Roger Boll (), Ludovic Mailleret () and Christine Poncet ()
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Alexandre Bout: URIH - Unité Recherches Intégrées en Horticulture - INRA - Institut National de la Recherche Agronomique
Roger Boll: URIH - Unité Recherches Intégrées en Horticulture - INRA - Institut National de la Recherche Agronomique
Ludovic Mailleret: URIH - Unité Recherches Intégrées en Horticulture - INRA - Institut National de la Recherche Agronomique
Christine Poncet: URIH - Unité Recherches Intégrées en Horticulture - INRA - Institut National de la Recherche Agronomique

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Abstract: Scouting is considered an essential component of integrated pest management strategies, but most of the techniques, which involve visual assessment, remain too time-consuming for application on a commercial scale. The global scouting method proposed here for greenhouse rose (Rosa spp.) crops combines several rapid visual methods for common pests and diseases, in a single sampling process. A 2-min observation time per sampling unit is required, with two observers. The sampling unit consists of a single stem with its flower and the corresponding basal foliage. A 90-unit regular grid (1 U/6.4 m2) was used, with weekly assessments, including a spatial distribution approach, for pest monitoring. Different grid sizes were simulated and tested with reference data, to determine whether to decrease the number of sampling units. A grid size of 1 U/21 m2 was found to be acceptable, with no significant loss of information. A more realistic and cheaper sampling strategy of this type is more likely to be accepted by growers, increasing the efficiency of crop monitoring and leading to more rational decisions.

Keywords: THRIPS; POWDERY MILDEW; GLOBAL SAMPLING; ECHANTILLONAGE; MITES; POPULATION DYNAMICS; LUTTE (search for similar items in EconPapers)
Date: 2010
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Published in Journal of Economic Entomology, 2010, 103 (6), pp.2242-2248. ⟨10.1603/EC10115⟩

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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-02655601

DOI: 10.1603/EC10115

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