Aphid Abundance on Cereals in Autumn Predicts Yield Losses Caused by Barley yellow dwarf virus
| Autor: | Manuel Plantegenest, Frédéric Fabre, Charles-Antoine Dedryver, J L Leterrier |
|---|---|
| Přispěvatelé: | Biologie des organismes et des populations appliquées à la protection des plantes (BIO3P), AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Recherche Agronomique (INRA), Bayer SAS, Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST |
| Rok vydání: | 2003 |
| Předmět: |
BARLEY YELLOW DWARF VIRUS
0106 biological sciences Integrated pest management hordeum vulgare BYDV Phytopathology and phytopharmacy plante céréaliere Homoptera Population virus Plant Science orge HEMIPTERA 01 natural sciences APHIDIDAE Rhopalosiphum padi education ComputingMilieux_MISCELLANEOUS 2. Zero hunger virus phytopathogène Aphid education.field_of_study INTEGRATED PEST MANAGEMENT biology aide à la décision prévision des risques protection intégrée Aphididae RHOPALOSIPHUM PADI biology.organism_classification Phytopathologie et phytopharmacie VIRUS EPIDEMIOLOGY [SDV.BV.PEP]Life Sciences [q-bio]/Vegetal Biology/Phytopathology and phytopharmacy dynamique des populations 010602 entomology Agronomy Barley yellow dwarf probabilité Hordeum vulgare Agronomy and Crop Science analyse de risque 010606 plant biology & botany |
| Zdroj: | Phytopathology Phytopathology, American Phytopathological Society, 2003, 93 (10), pp.1217-1222. ⟨10.1094/PHYTO.2003.93.10.1217⟩ Phytopathology, 2003, 93 (10), pp.1217-1222. ⟨10.1094/PHYTO.2003.93.10.1217⟩ Phytopathology 10 (93), 1217-1222. (2003) |
| ISSN: | 1943-7684 0031-949X |
| DOI: | 10.1094/phyto.2003.93.10.1217 |
| Popis: | Barley yellow dwarf virus (BYDV) damage to winter cereals and population dynamics of the aphid Rhopalosiphum padi during fall were monitored in fields during 10 years at various locations in the northern half of France. Logistic regression was used to examine whether a simple risk probability algorithm based only on the autumnal population dynamics of R. padi can accurately predict yield losses caused by BYDV and, therefore, the need for insecticide treatment. Results showed that the area under the curve of the percentage of plants infested by R. padi during autumn was highly significantly related to BYDV yield losses. Then, a cost/benefit analysis was performed to estimate the optimal decision threshold resulting in the lowest annual average costs of BYDV damage and control. A “model use” strategy allowed a reduction in the annual average costs of BYDV disease and control of up to 36% when compared with a “prophylactic spraying” strategy. The optimal decision threshold was highly sensitive to variation in disease prevalence. This property was used to propose an easy way to adapt the model to any production situation through the determination of the most accurate decision threshold. |
| Databáze: | OpenAIRE |
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