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Complex interplay of future climate levels of CO2, ozone and temperature on susceptibility to fungal diseases in barley Organic Eprints
Mikkelsen, B.L.; Jørgensen, R.B.; Lyngkjær, M. F..
Barley (Hordeum vulgare) was grown in different climatic environments with elevated [CO2] (700 vs 385 ppm), [O3] (60/90 vs 20 ppb) and temperature (24/19 vs 19/12°C day/night) as single factors and in combinations, to evaluate the impact of these climatic factors on photosynthesis and susceptibility to powdery mildew and spot blotch disease. No significant increase in net CO2 assimilation rate was observed in barley grown under elevated [CO2] at ambient temperature.However, this rate was positively stimulated under elevated temperature together with a slightly higher potential quantum efficiency of PSII, both at ambient and elevated [CO2], suggesting that photosynthesis was not limited by [CO2] at ambient temperature. When growing under elevated...
Tipo: Journal paper Palavras-chave: Food security; Food quality and human health Air and water emissions Crop health; Quality; Protection.
Ano: 2014 URL: http://orgprints.org/28056/7/28056.pdf
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Comparing two models of the diurnal temperature cycle for simulations of crop and pest phenology under climate change Organic Eprints
Felber, Raphael; Fuhrer, Jürg; Stöckli, Sibylle; Calanca, Pierluigi.
Air temperature is the most important determinant of crop and pest phenology. Developmental rates of organisms are thus usually modelled as a function of growing degree-days. These can be evaluated based on either daily or hourly temperatures. However, as climate model do not provide reliable information at high temporal resolution, statistical or empirical models are needed to generate hourly temperature data for assessing crop and pest phenology under climate change. We present the comparison of two approaches for generating hourly temperatures from daily values of the minimum (Tmin) and maximum (Tmax) temperature. The statistical downscaling approach proposed by Hirschi et al. (2012) uses a nearest neighbour re-sampling procedure to prescribe realistic...
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Air and water emissions Crop health; Quality; Protection.
Ano: 2016 URL: http://orgprints.org/34552/1/16_AgMIP_Poster_final.pdf
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Klimadienstleistungen: Idee und Rahmenbedingung für die Umsetzung - FiBL Organic Eprints
Stöckli, Sibylle.
FiBL Partner des NCCS (National Center for Climate Services) Abschätzung der klimabedingten Auswirkungen auf Schadorganismen
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Air and water emissions Crop health; Quality; Protection.
Ano: 2016 URL: http://orgprints.org/34553/1/Stoeckli_FiBL_Beitrag_FiBL.pdf
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