caa a22 4500 397571488 CHVBK 20180308164842.0 cr unu---uuuuu 161202e19961001xx s 000 0 eng 10.1093/ee/25.5.983 doi (NATIONALLICENCE)oxford-10.1093/ee/25.5.983 Impact of Various Yield-Reducing Agents on Open-Field Sweet Peppers [Elektronische Daten] [A. Fereres, C. Avilla, J. L. Collar, M. Duque, C. Fernández-Quintanilla] Major damaging agents of open-field pepper crops in Spain are potato virus Y (PVY), the green peach aphid, Myzus persicae (Sulzer), and black nightshade, Solanum nigrum L. Yield loss of pepper affected by associations of these interacting agents was quantified in 1993 and 1994 under field conditions. Yield loss was greatest (82% both years) when all 3 yield-reducing factors were present. Aphid damage caused greater impact on total marketable yield than weed damage (56 versus 40% yield loss in 1993 and 65 versus 45% in 1994). Both agents combined (aphids and weeds) had a nonadditive effect on marketable yield loss. The number of marketable fruit per plant was the yield component most affected by aphid, weed, or virus damage in both years. Spread of PVY in pepper plots caused no additional yield losses over those produced by the other 2 damaging agents. In 1993, spread of PVY on pepper plots was higher in the presence of virus-infected nightshades than when infected peppers acted as the inoculum source. Therefore, S. nigrum may enhance aphid movement and increase the rate of virus spread. © 1996 Entomological Society of America Community and Ecosystem Ecology nationallicence Myzus persicae nationallicence Solanum nigrum nationallicence potato virus Y nationallicence yield loss nationallicence pepper nationallicence Fereres A. Departamento de Protección Vegetal, Centro de Ciencias Medioambientales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 duplicado, 28006 Madrid, Spain aut Avilla C. Departamento de Protección Vegetal, Centro de Ciencias Medioambientales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 duplicado, 28006 Madrid, Spain aut Collar J. L. Departamento de Protección Vegetal, Centro de Ciencias Medioambientales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 duplicado, 28006 Madrid, Spain aut Duque M. Departamento de Protección Vegetal, Centro de Ciencias Medioambientales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 duplicado, 28006 Madrid, Spain aut Fernández-Quintanilla C. Departamento de Protección Vegetal, Centro de Ciencias Medioambientales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 duplicado, 28006 Madrid, Spain aut Environmental Entomology Oxford University Press 25/5(1996-10-01), 983-986 0046-225X 25:5<983 1996 25 ee https://doi.org/10.1093/ee/25.5.983 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.5.983 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fereres A. Departamento de Protección Vegetal, Centro de Ciencias Medioambientales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 duplicado, 28006 Madrid, Spain aut NATIONALLICENCE 700 1- Avilla C. Departamento de Protección Vegetal, Centro de Ciencias Medioambientales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 duplicado, 28006 Madrid, Spain aut NATIONALLICENCE 700 1- Collar J. L. Departamento de Protección Vegetal, Centro de Ciencias Medioambientales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 duplicado, 28006 Madrid, Spain aut NATIONALLICENCE 700 1- Duque M. Departamento de Protección Vegetal, Centro de Ciencias Medioambientales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 duplicado, 28006 Madrid, Spain aut NATIONALLICENCE 700 1- Fernández-Quintanilla C. Departamento de Protección Vegetal, Centro de Ciencias Medioambientales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 duplicado, 28006 Madrid, Spain aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/5(1996-10-01), 983-986 0046-225X 25:5<983 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford