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Effect of Nitrogen Fertilization and Inoculation of Durum Wheat With Fusarium pseudograminearum on Yield, Technological Quality and Gluten Protein Composition
Sissons, M.; Egan, N.; Simpfendorfer, S. Effect of Nitrogen Fertilization and Inoculation of Durum Wheat with Fusarium pseudograminearum on Yield, Technological Quality and Gluten Protein Composition. Agronomy2023, 13, 1658.
Sissons, M.; Egan, N.; Simpfendorfer, S. Effect of Nitrogen Fertilization and Inoculation of Durum Wheat with Fusarium pseudograminearum on Yield, Technological Quality and Gluten Protein Composition. Agronomy 2023, 13, 1658.
Sissons, M.; Egan, N.; Simpfendorfer, S. Effect of Nitrogen Fertilization and Inoculation of Durum Wheat with Fusarium pseudograminearum on Yield, Technological Quality and Gluten Protein Composition. Agronomy2023, 13, 1658.
Sissons, M.; Egan, N.; Simpfendorfer, S. Effect of Nitrogen Fertilization and Inoculation of Durum Wheat with Fusarium pseudograminearum on Yield, Technological Quality and Gluten Protein Composition. Agronomy 2023, 13, 1658.
Abstract
Abstract: In Australia adoption of reduced tillage and stubble retention cropping systems to conserve soil moisture by growers has seen an increase in the prevalence of the disease Fusarium crown rot (FCR) caused by the stubble-borne fungal pathogen Fusarium pseudograminearum. Durum wheat is particularly susceptible to FCR expressing significant yield and quality losses in the presence of infection. Increasing rates of nitrogen (N) application at sowing exacerbates FCR. However, to achieve the desired grain protein and quality suited to pasta manufacture, N application is necessary and this creates a dilemma for growers. The purpose of this study was to investigate the effects of FCR infection in the presence of different N fertiliser application rates in durum wheat varieties on yield and technological quality. Two durum varieties were evaluated at the same location over two seasons (2020 and 2021). These seasons were characterised by being wetter than normal and showed different responses to FCR and N application. In general, the 2021 season showed better responses to applied N with no impact of FCR. The FCR inoculation while it resulted in significant infection, it had no impacts on yield or grain quality in 2021 while in 2020 yield was reduced and only gluten index was reduced. Jandaroi was found to hold its kernel vitreosity at all protein levels obtaining the premium grade while DBA Lillaroi did not and would suffer downgrade if N application was insufficient. However, higher N application rates needed to achieve 12% + protein saw a reduction in dough strength with Jandaroi holding its dough strength much better than DBA Lillaroi. This was related to the lower glutenin/gliadin (Gli/Glu) ratio in response to applied N at sowing in Jandaroi which helped retain kernels with high vitreousness. This suggests genetics plays an important role in a genotype response to N fertilisation and should be considered when selecting a variety where higher premium grades are desirable.
Biology and Life Sciences, Agricultural Science and Agronomy
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
