Quantitative relationships betweenOstrinia nubilalisactivity and deoxynivalenol contamination in French maize
- 13 August 2012
- journal article
- research article
- Published by Taylor & Francis Ltd in International Journal of Pest Management
- Vol. 58 (4), 302-309
- https://doi.org/10.1080/09670874.2012.679641
Abstract
We investigated the indirect effect of an insecticide spray against the European Corn Borer (Ostrinia nubilalis Hübner; Lepidoptera: Crambidae) on mycotoxin contaminations of grain maize at the harvest stage. Between 2004 and 2009, 45 paired plots comparing insecticide treatment with untreated control were studied in Alsace administrative region, in the northeast of France. An average reduction of 78% in O. nubilalis larval densities was observed in insecticide-treated plots compared with control plots. Mean levels of deoxynivalenol mycotoxin in harvested grain were significantly reduced from 849 ppb in the control samples to 152 ppb in the insecticide-treated samples. A statistical modelling approach involving Generalized Linear Models (GLMs) was employed to identify and rank the associated variables for damage and pest density on different plant parts, on deoxynivalenol levels in harvested grain at harvest. The modelling revealed that the occurrence and the density of O. nubilalis larvae in maize stalks and in ears are the best indicators for deoxynivalenol contamination. The identification of these deoxynivalenol contamination risk factors, along with other factors such as genetic background, harvest date and crop rotation allows improvement of the risk assessment and risk forecasting in maize crops in order to manage crop safety and maintain maize deoxynivalenol mycotoxin levels below the European Regulation (EC) No. 1126/2007 threshold.Keywords
This publication has 31 references indexed in Scilit:
- Decreased Mortality Associated With Prompt Gram Staining of Blood CulturesYearbook of Pathology and Laboratory Medicine, 2010
- Comparative activity of agrochemical treatments on mycotoxin levels with regard to corn borers and Fusarium mycoflora in maize (Zea mays L.) fieldsCrop Protection, 2009
- Effect of Sowing Time on Toxigenic Fungal Infection and Mycotoxin Contamination of Maize KernelsJournal of Phytopathology, 2008
- Egg maturation strategy and its associated trade‐offs: a synthesis focusing on LepidopteraEcological Entomology, 2005
- Influence of cropping system on Fusarium head blight and mycotoxin levels in winter wheatCrop Protection, 2004
- Lower Fumonisin Mycotoxin Levels in the Grain of Bt Corn Grown in the United States in 2000−2002Journal of Agricultural and Food Chemistry, 2004
- Influence of Cry1Ab Protein and Hybrid Genotype on Fumonisin Contamination and Fusarium Ear Rot of CornCrop Science, 2003
- Effect of Bt-Corn Hybrids on Deoxynivalenol Content in Grain at HarvestPlant Disease, 2002
- Mating disruption of the corn borer Sesamia nonagrioides (Lepidoptera: Noctuidae) using sprayable formulations of pheromoneCrop Protection, 2002
- Generalized Linear ModelsJournal of the Royal Statistical Society. Series A (General), 1972