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Author |
Ebrahimi, E.; Manschadi, A.M.; Neugschwandtner, R.W.; Eitzinger, J.; Thaler, S.; Kaul, H.-P. |
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Title |
Assessing the impact of climate change on crop management in winter wheat – a case study for Eastern Austria |
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Journal Article |
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Year |
2016 |
Publication |
Journal of Agricultural Science |
Abbreviated Journal |
J. Agric. Sci. |
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154 |
Issue |
07 |
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1153-1170 |
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Abstract |
Climate change is expected to affect optimum agricultural management practices for autumn-sown wheat, especially those related to sowing date and nitrogen (N) fertilization. To assess the direction and quantity of these changes for an important production region in eastern Austria, the agricultural production systems simulator was parameterized, evaluated and subsequently used to predict yield production and grain protein content under current and future conditions. Besides a baseline climate (BL, 1981–2010), climate change scenarios for the period 2035–65 were derived from three Global Circulation Models (GCMs), namely CGMR, IPCM4 and MPEH5, with two emission scenarios, A1B and B1. Crop management scenarios included a combination of three sowing dates (20 September, 20 October, 20 November) with four N fertilizer application rates (60, 120, 160, 200 kg/ha). Each management scenario was run for 100 years of stochastically generated daily weather data. The model satisfactorily simulated productivity as well as water and N use of autumn- and spring-sown wheat crops grown under different N supply levels in the 2010/11 and 2011/12 experimental seasons. Simulated wheat yields under climate change scenarios varied substantially among the three GCMs. While wheat yields for the CGMR model increased slightly above the BL scenario, under IPCM4 projections they were reduced by 29 and 32% with low or high emissions, respectively. Wheat protein appears to increase with highest increments in the climate scenarios causing the largest reductions in grain yield (IPCM4 and MPEH-A1B). Under future climatic conditions, maximum wheat yields were predicted for early sowing (September 20) with 160 kg N/ha applied at earlier dates than the current practice. |
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0021-8596 |
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TradeM |
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MA @ admin @ |
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4723 |
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Banse, M. |
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MACSUR (Modelling European Agriculture with Climate Change for Food Security) |
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2013 |
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LIAISE Annual Meeting, Tallinn, Estonia, 2013-03-25 to 2013-03-28 |
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MA @ admin @ |
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2290 |
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Banse, M. |
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Title |
FACCE-JPI Achievements to date: MACSUR |
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2013 |
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FACCE-JPI 3-year Anniversary Date, 2013-10-22 to 2013-10-22 |
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MA @ admin @ |
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2289 |
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Bannink, A. |
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Application of a Tier 3 approach for estimating enteric fermentation in dairy cows: Advantages and disadvantages |
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2014 |
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LiveM |
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International Livestock Modelling and Research Colloquium, Bilbao, Spain, 2014-10-14 to 2014-10-16 |
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MA @ admin @ |
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2288 |
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Author |
Brylińska, M.; Sobkowiak, S.; Stefańczyk, E.; Śliwka, J. |
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Title |
Potato cultivation system affects population structure of Phytophthora infestans |
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Journal Article |
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2016 |
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Fungal Ecology |
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Fungal Ecology |
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20 |
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132-143 |
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SSR; Population genetic structure; Late blight; Potato; late blight resistance; mating-type; microsatellite markers; phenotypic diversity; sexual reproduction; genotypic diversity; nordic countries; severe outbreaks; sarpo mira; pathogenicity |
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Phytophthora infestans is one of the most destructive potato pathogens. Many factors influence the population structure of P. infestans, including migration, climate and type of potato cultivation. Here, we analyse 365 P. infestans isolates collected from three regions of Poland over three years. We determined mating type, mitochondrial haplotype, resistance to metalaxyl, virulence and polymorphism at 14 simple sequence repeat (SSR) loci. Analysis of SSR markers showed high genetic diversity associated with this population. Model-based structure analysis grouped 299 unique genotypes into four main clusters. The P. infestans isolates collected from the Mlochow region, which has the most intensive level of potato cultivation, formed a distinct cluster, indicating a strong effect of the cultivation system on pathogen population structure. Three clusters contained isolates with frequent presence of three alleles at one locus, which may affect their capacity for sexual reproduction and preserve groups of fit genotypes that propagate asexually. (C) 2016 Elsevier Ltd and The British Mycological Society. |
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1754-5048 |
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CropM, ft_macsur |
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MA @ admin @ |
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4720 |
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