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Author  |
Müller, C., Elliott J |
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Title |
The Global Gridded Crop Model Intercomparison Project |
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Conference Article |
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Year |
2013 |
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4th Annual AgMIP Workshop, New York, USA, 2013-10-28 to 2013-10-30 |
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MA @ admin @ |
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2667 |
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Author |
Müller, C. |
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Title |
Climate change impacts, uncertainties and implications |
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Conference Article |
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2013 |
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First Workshop Expert Network Management of Climate change induced Risks, Hamburg, Germany, 2013-03-20 to 2013-03-21 |
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MA @ admin @ |
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2665 |
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Author |
Müller, C. |
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Title |
Multi-sector interaction in climate change impact analysis |
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Conference Article |
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Year |
2013 |
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Impacts World 2013, International Conference on Climate Change Effects, Potsdam, Germany, 2013-05-27 to 2013-05-30 |
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no |
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Call Number |
MA @ admin @ |
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2666 |
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Author |
Müller, C. |
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Title |
African lessons on climate change risks for agriculture |
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Journal Article |
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Year |
2013 |
Publication |
Annual Review of Nutrition |
Abbreviated Journal |
Ann. Rev. Nutr. |
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Volume |
33 |
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1 |
Pages |
395-411 |
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Keywords |
Africa/epidemiology; *Climate Change/economics; Crops, Agricultural/economics/*growth & development; Diet/adverse effects/economics; Forecasting; *Global Health/economics/trends; Humans; Malnutrition/economics/epidemiology/prevention & control; *Models, Theoretical; Risk; Soil/chemistry; Water Resources/economics |
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Abstract |
Climate change impact assessments on agriculture are subject to large uncertainties, as demonstrated in the present review of recent studies for Africa. There are multiple reasons for differences in projections, including uncertainties in greenhouse gas emissions and patterns of climate change; assumptions on future management, aggregation, and spatial extent; and methodological differences. Still, all projections agree that climate change poses a significant risk to African agriculture. Most projections also see the possibility of increasing agricultural production under climate change, especially if suitable adaptation measures are assumed. Climate change is not the only projected pressure on African agriculture, which struggles to meet demand today and may need to feed an additional one billion individuals by 2050. Development strategies are urgently needed, but they will need to consider future climate change and its inherent uncertainties. Science needs to show how existing synergies between climate change adaptation and development can be exploited. |
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English |
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0199-9885 1545-4312 |
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CropM |
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Call Number |
MA @ admin @ |
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4496 |
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Author |
Morales, I.; Diaz, B.M.; Hermoso De Mendoza, A.; Nebreda, M.; Fereres, A. |
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Title |
The Development of an Economic Threshold for Nasonovia ribisnigri (Hemiptera: Aphididae) on Lettuce in Central Spain |
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Journal Article |
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2013 |
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Journal of Economic Entomology |
Abbreviated Journal |
J. Econ. Entomol. |
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106 |
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2 |
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891-898 |
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Animals; Aphids/*physiology; Insect Control/economics/methods; Insecticides/administration & dosage; Lettuce/*growth & development; Nitriles/administration & dosage; Nonlinear Dynamics; Population Density; Pyrethrins/administration & dosage; Seasons; Spain |
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Abstract |
This study reports economic thresholds for the lettuce aphid Nasonovia ribisnigri (Mosley), based exclusively on cosmetic damage, that is, presence or absence of aphids at harvest time. Field trials were conducted in La Poveda Experimental Farm, Madrid (Spain) during autumn (2004 and 2005) and spring (2005 and 2006). Plants were arranged in plots and just before the formation of lettuce hearts they were infested with different densities of N. ribisnigri. Two days later, half of each plot was treated with tau-fluvalinate (Klartan24AF) and the other half remained as an untreated control. Economic thresholds were obtained from nonlinear regressions calculated between the percentage of commercial plants at the end of the crop cycle for both, treated and untreated semiplots, and the different initial densities of N. ribisnigri per plant. Two criteria were used to consider a commercial lettuce plant: a conservative estimate (0 aphids/plant) and a lax one (< 5 aphids/plant). Thus, an economic threshold was established for each season and criterium. The economic thresholds that were obtained with the most and least conservative criteria were in spring 0.06 and 0.12 aphids per plant, and in autumn 0.07 and 0.13 aphids per plant, respectively. These results show that to avoid cosmetic damage, insecticide sprays are required when a very low aphid density is detected in lettuce seedlings soon after transplant. |
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0022-0493 |
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CropM |
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MA @ admin @ |
Serial |
4497 |
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