Brown rust disease control in winter wheat: I. Exploring an approach for disease progression based on night weather conditions

El Jarroudi, Moussa and Kouadio, Louis and Delfosse, Philippe and Tychon, Bernard (2014) Brown rust disease control in winter wheat: I. Exploring an approach for disease progression based on night weather conditions. Environmental Science and Pollution Research, 21 (7). pp. 4797-4808. ISSN 0944-1344

Abstract

An empirical approach for simulating the infection and progress of leaf rust (caused by Puccinia triticina) during stem elongation on winter wheat was analysed for the 2000 to 2006 growing seasons. The approach was elaborated based on night weather conditions (i.e., air temperature, relative humidity and rainfall) and leaf rust occurrences. Data from three consecutive cropping seasons (2000–2002) at four representative sites of the Grand-Duchy of Luxembourg were used in the set-up phase. The capability to correctly simulate the occurrence expression of P. triticina infections on the upper leaf layers was then assessed over the 2003–2006 period. Our study revealed that the development of leaf rust required a period of at least 12 consecutive hours with air temperatures ranging between 8 and 16°C, a relative humidity greater than 60% (optimal values being 12–16°C and up to 80% for air temperatures and relative humidity, respectively) and rainfall less than 1mm. Moreover, leaf rust occurrences and infections were satisfactorily simulated. The false alarm ratio was ranged from 0.06 to 0.20 in all the study sites. The probability of detection and critical success index for WLR infection were also close to 1 (perfect score).


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 Springer-Verlag Berlin Heidelberg. Permanent restricted access to published version due to publisher copyright policy.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - No Department
Date Deposited: 18 Oct 2014 20:49
Last Modified: 06 Nov 2015 03:07
Uncontrolled Keywords: night weather; disease occurrence; disease severity; Puccinia triticina; leaf rust
Fields of Research : 07 Agricultural and Veterinary Sciences > 0701 Agriculture, Land and Farm Management > 070105 Agricultural Systems Analysis and Modelling
07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
Socio-Economic Objective: B Economic Development > 82 Plant Production and Plant Primary Products > 8205 Winter Grains and Oilseeds > 820507 Wheat
Identification Number or DOI: 10.1007/s11356-013-2463-6
URI: http://eprints.usq.edu.au/id/eprint/26193

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