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CROP MANAGEMENT EFFECTS ON FUSARIUM HEAD BLIGHT, FUSARIUM-DAMAGED KERNELS AND DEOXYNIVALENOL CONCENTRATION OF SPRING WHEAT

Ma, B.L., Subedi, K.D., Xue, A.G., Voldeng, H.D. (2013). CROP MANAGEMENT EFFECTS ON FUSARIUM HEAD BLIGHT, FUSARIUM-DAMAGED KERNELS AND DEOXYNIVALENOL CONCENTRATION OF SPRING WHEAT, 36(5), 717-730. http://dx.doi.org/10.1080/01904167.2012.748799

Abstract

Proper crop management is an important strategy in reducing Fusarium head blight (FHB) and deoxynivalenol (DON) concentrations in spring wheat (Triticum aestivum). A field study was conducted for three growing seasons to investigate FHB severity, Fusarium-damaged kernels (FDK), and DON concentrations and their inter-relationships as affected by planting and harvesting dates and nitrogen application. Cultivar 'AC Brio' was planted on three dates at approximately 10-d intervals starting from the last week of April. Five nitrogen (N) treatments were 0, 60 and 100 kg N ha-1 applied as starter, 60 (starter) + 40 kg N ha-1 as top-dress and 60 + 40 kg N ha-1 foliar spray at boot stage. Later planting increased FDK and DON concentration and the effects were greater in coarse-textured than in a fine-textured soil. DON concentration sometimes doubled when harvest was delayed after physiological maturity. Nitrogen treatments per se had no effects on FDK and DON. © 2013 Copyright Taylor and Francis Group, LLC.

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