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Soil solarisation delivers near zero levels of Fusarium pseudograminearum in cereal crown rot reference sites

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Bottomley, P., Sutherland, M. W., Wilson, B. A. L., Rognoni, B., Kelly, A. M. and Percy, C. D. (2024) Soil solarisation delivers near zero levels of Fusarium pseudograminearum in cereal crown rot reference sites. Crop Protection, 185 . p. 106887. ISSN 0261-2194

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Article Link: https://doi.org/10.1016/j.cropro.2024.106887

Publisher URL: https://www.sciencedirect.com/science/article/pii/S0261219424003156

Abstract

The development of commercial varieties that are resistant or tolerant to crown rot caused by Fusarium species is an important goal for cereal breeding programs internationally. Ideally, this research requires experimental sites that are initially free from Fusarium in order to establish treatment plots that compare growth in the presence and absence of these soil- and stubble-borne pathogens. Specifically, the assessment of tolerance requires control plots free of disease to determine the reduction in crop yield in plots where the disease is present. The ability of soil solarisation to reduce the background Fusarium pseudograminearum level occurring at experimental sites in comparison to current stubble management techniques was investigated across three field trials at Wellcamp in Queensland. Stubble from a susceptible durum (Triticum turgidum ssp. durum) cultivar inoculated with F. pseudograminearum was incorporated by cultivation into the trial sites to establish a significant background level of inoculum prior to the application of all subsequent treatment plots. In these trials, solarisation over a period of twelve weeks reduced the presence of F. pseudograminearum to low detection levels when compared to the traditional crown rot management techniques of cultivation or growth of the non-host cover crops mungbean (Vigna radiata) and soybean (Glycine max). No negative effects of solarisation were observed on a subsequent crop of bread wheat (Triticum aestivum), with significantly higher yields observed in the solarised treatments. Solarisation has the potential to deliver near zero level crown rot reference sites for experimental purposes in one short application between cropping seasons.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Business groups:Crop and Food Science
Keywords:Crown rot Disease control Soil solarisation Wheat stubble Straw decomposition
Subjects:Science > Botany > Genetics
Plant culture > Field crops
Plant culture > Field crops > Grain. Cereals
Plant pests and diseases
Plant pests and diseases > Plant pathology
Live Archive:16 Aug 2024 01:04
Last Modified:16 Aug 2024 01:04

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