한국농림기상학회:학술대회논문집 (Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference)
- 한국농림기상학회 2015년도 하계 학술발표논문집
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- Pages.18-28
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- 2015
Drivers of Crop Productivity and Resource Use Efficiencies in Apple between Western and Eastern States in the US
- Kim, Soo-Hyung (School of Environmental and Forest Sciences, University of Washington)
- 발행 : 2015.08.25
초록
Apple is cultivated under various climatic conditions in many parts of the world. Better understanding of how climate, genotype, soil, and management factors interact to determine crop productivity will improve our ability to optimize crop selection, management strategies, and resource use efficiencies. We developed and applied a physiology-based apple canopy model to evaluate how climatic factors and crop phenotypes interact to determine biomass accumulation, radiation use efficiency (RUE), and water use efficiency (WUE) at multiple production sites between western and eastern states of the US including WA, CA, NY, WV, and PA. Our results indicate that solar radiation is a dominant factor limiting biomass production in the eastern states while VPD is the primary factor governing crop water use across eastern and western states during the peak growing season. Crop RUE and WUE were strongly correlated in the western states but not in the eastern states while VPD showed highly negative correlation with both RUE and WUE across all locations. The RUE improved with increasing fraction of diffuse radiation (
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