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Plant sciences, sustainable farming systems and food quality
RESEARCH ARTICLE

Mycotoxins and fungal damage in maize harvested during 1982 in Far North Queensland

BJ Blaney, CJ Moore and AL Tyler

Australian Journal of Agricultural Research 35(4) 463 - 471
Published: 1984

Abstract

A survey for mycotoxins and fungal damage in maize (Zea mays L.) grown during 1982 in Far North Queensland is reported. This season had a rainfall distribution which was typical for the region. The 293 samples examined came from 111 farms in eight maize-growing districts. The samples were first subjected to rapid screening tests for fungal damage. Aflatoxins B1, B2, G1, G2, ochratoxin A, T-2 toxin, and sterigmatocystin were not detected, but zearalenone was found in 85% of the samples. The concentrations of zearalenone were correlated with the extent of Gibberella zeae cob rot as indicated by the proportion (up to 2%) of kernels in each sample having a reddish-purple discoloration. In four samples the zearalenone concentration exceeded 1 mg kg-1, but the mean ¦ s.d. (n = 293) concentration in all samples was 0.17 ¦ 0.225 mg kg-1. Concentrations were highest in districts with the highest rainfall during the period of maize growth.

https://doi.org/10.1071/AR9840463

© CSIRO 1984

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