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Title: Effect of stripe rust on the yield response of wheat to nitrogen
Contributor(s): Devadas, Rakhesh (author); Simpfendorfer, Steven (author); Backhouse, David  (author)orcid ; Lamb, David  (author)
Publication Date: 2014
Open Access: Yes
DOI: 10.1016/j.cj.2014.05.002Open Access Link
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Abstract: Nitrogen (N) is the most important fertiliser element determining the productivity of wheat. N nutrition is known to affect the level of stripe rust infection, with higher N associated with increased disease severity. Stripe rust, caused by 'Puccinia striiformis' f. sp. tritici, is a major yield-limiting disease of wheat in Australia. This paper describes experiments designed to investigate the agronomic response to the interaction of various levels of N application and stripe rust severity in wheat varieties differing in response. Experimental plots were established in crop seasons 2006 and 2007 on the Liverpool Plains of northern NSW, Australia. Yield, biomass, grain protein content (GPC) and harvest index (HI) data were recorded. Increased rates of N increased the severity of stripe rust during grain filling. N application also increased yield and GPC in all varieties in both years. Stripe rust reduced the yield of the rust-susceptible wheat varieties, and GPC and proportion of added N recovered in the grain were also reduced in one year but not the other. It was evident from our experiment that stripe rust caused yield loss accompanied by either no change or reduction in GPC, indicating that the total amount of N entering the grain was reduced by stripe rust. The effects of stripe rust on N yield are most likely associated with reduced uptake of N during grain filling.
Publication Type: Journal Article
Source of Publication: The Crop Journal, 2(4), p. 201-206
Publisher: Kexue Chubanshe Science Press
Place of Publication: China
ISSN: 2214-5141
Field of Research (FOR): 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
070306 Crop and Pasture Nutrition
070302 Agronomy
Socio-Economic Objective (SEO): 820507 Wheat
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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Appears in Collections:Journal Article
School of Environmental and Rural Science

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