Efficacy of Azoxystrobin on Mycotoxins and Related Fungi in Italian Paddy Rice

Toxins

卷:11

Annalisa Mulazzi¹  Terenzio Bertuzzi¹  Paola Giorni²  Umberto Rolla³  Marco Romani³ 

[1] Department of Animal, Food and Nutrition Science—DIANA, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy;

[2] Department of Sustainable Crop Production—DIPROVES, Faculty of Agriculture, Food and Environmental Science, Università Cattolica del Sacro Cuore, via Emilia Parmense 84, 29122 Piacenza, Italy;

[3] Ente Nazionale Risi, Rice Research Centre, Strada per Ceretto 4, Castello d’Agogna, 27030 Pavia, Italy;

关键词: rice;    mycotoxins;    sterigmatocystin;    STC;    deoxynivalenol;    DON;    growing season;    azoxystrobin;    fungicide;   

DOI  :  10.3390/toxins11060310

来源: DOAJ

【 摘 要 】

The efficacy of azoxystrobin was evaluated in the presence of mycotoxigenic fungi and relative mycotoxins in Italian paddy rice during the growing season in the field. Three experimental fields were considered and the applied experimental design was a strip plot with three replicates; rice samples were collected at four different growing stages. The efficacy of the fungicide treatment on rice fungal population was demonstrated with around 20% less total fungal incidence in sprayed samples compared to untreated ones; the same decrease was noted also in Fusarium spp. species but not in Aspergillus versicolor. Of the mycotoxins considered, ochratoxin A (OTA) and aflatoxins (AFBs) were never detected, deoxynivalenol (DON) was found in 46% of samples at levels always lower than 100 µg/kg, while sterigmatocystin (STC) occurred in all the paddy rice samples collected after flowering, with a maximum value of 15.5 µg/kg. Treatment with azoxystrobin was not effective in reducing DON contamination, but it had an important and significant effect on STC content, showing a decrease of 67% in the sprayed samples.

【 授权许可】

Unknown