Ponti, Luigi; Altieri, Miguel A. and Gutierrez, Andrew P. (2008) Compost enhances parasitization of Brevicoryne brassicae (L.) by Diaeretiella rapae (M’Intosh) in broccoli under different levels of crop diversification and plant competition. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.
RTF (Rich Text Format)
The effects of intercropping via competition on crop biomass, pest [cabbage aphid Brevicoryne brassicae (L.)] abundance and natural enemy [the parasitoid Diaeretiella rapae (M’Intosh)] efficacy were studied in the Brassica oleracea L. var. italica system. From May to December 2004, insect populations and yield parameters were monitored in summer and fall in broccoli monoculture and polyculture systems with or without competition from Brassica spp. (mustard), or Fagopyrum esculentum Moench (buckwheat), and with addition of organic (compost) or synthetic fertilizer. Competition from buckwheat and mustard intercrops did not influence pest density on broccoli; rather, aphid pressure decreased and natural enemies of cabbage aphid were enhanced in intercropping treatments, but this varied with the intercropped plant and season (summer vs. fall). In compost-fertilized broccoli, increased seasonal parasitization rates of B. brassicae by D. rapae were observed along with the expected lower aphid pressure, when compared to synthetically-fertilized plants.
|EPrint Type:||Conference paper, poster, etc.|
|Type of presentation:||Poster|
|Keywords:||indirect effects of intercropping, crop biomass, buckwheat, mustard, organic fertilization|
|Subjects:||Crop husbandry > Crop health, quality, protection|
|Research affiliation:||International Conferences > 2008: IFOAM OWC: Research Track / ISOFAR > 8 MEDITERRANEAN|
|Deposited By:||Ponti, Luigi|
|Deposited On:||02 Oct 2008|
|Last Modified:||12 Apr 2010 07:36|
|Refereed:||Peer-reviewed and accepted|
|Additional Publishing Information:||This paper is published in the conference proceedings: |
Neuhoff, Daniel; Halberg, Niels; Alfldi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse A.; Hermansen, John; Vaarst, Mette; Lck, Lorna; Carporali, Fabio; Jensen, Henning Hgh; Migliorini, Paola and Willer, Helga, Eds. (2008) .Cultivating the Future Based on Science. Proceedings of the Second Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), held at the 16th IFOAM Organic World Congress in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the Consorzio ModenaBio, 18 . 20 June 2008 in Modena, Italy.. International Society of Organic Agriculture Research (ISOFAR), c/o IOL, DE-Bonn, Research Institute of Organic Agriculture FiBL, CH-Frick. http://orgprints.org/13672 and http://orgprints.org/13674
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