Disease Management and Estimated Effects on DON (Deoxynivalenol) Contamination in Fusarium Infested Barley

Gregory McKee, Christina Cowger, Ruth Dill-Macky, Andrew Friskop, Pravin Gautam, Joel Ransom and William Wilson
Additional contact information
Christina Cowger: United States Department of Agriculture-Agricultural Research Service, Department of Plant Pathology, Raleigh, NC 27695, USA
Ruth Dill-Macky: Department of Plant Pathology, University of Minnesota, Saint Paul, MN 55108, USA
Andrew Friskop: Department of Plant Pathology, North Dakota State University, Dept. 7660, Fargo, ND 58108-6050, USA
Pravin Gautam: North American Wheat Breeding & Operation, BASF Agricultural Solutions, Beaver Crossing, NE 68313, USA
Joel Ransom: Department of Plant Sciences, North Dakota State University, Dept. 7660, Fargo, ND 58108-6050, USA
William Wilson: Department of Agribusiness and Applied Economics, North Dakota State University, Dept. 7610, Fargo, ND 58108-6050, USA

Agriculture, 2019, vol. 9, issue 7, 1-14

Abstract: Fusarium head blight (FHB or scab) economically devastates barley production. FHB is predominantly caused by Fusarium graminearum and has resulted in major reductions in the quality of barley in the United States. The most common source of economic loss is through development of potent mycotoxins in the grain, the most prominent of which, in the United States, is deoxynivalenol (DON). DON levels can be managed through a variety of techniques. This study presents the estimate of the statistical relationship among DON contamination in barley, FHB incidence and severity, and a variety of disease management techniques. Data from 22 field studies and a survey of barley producers are used to estimate the relationship. Fungicide applications reduce DON in barley in general and via complementary interactions with the barley cultivar. Genetic FHB resistance in barley varieties is an important determinant of DON levels, as well as previous crop and factors related to time and location. Taking care to avoid rotations with FHB host crops immediately prior to barley is also important to reduce DON levels in barley. These become key inputs into barley producer decisions for evaluating the economic value of adopting FHB management techniques.

Keywords: Fusarium head blight; scab; deoxynivalenol; regression; disease management (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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