Soil water availability and capacity of nitrogen accumulation influence variations of intrinsic water use efficiency in rice

Wang, Xue; Nay-Htoon, Bhone; Lindner, Steve; Dubbert, Maren; Otieno, Dennis; Ko, Jonghan; Werner, Christiane; Tenhunen, John

doi:10.1016/j.jplph.2016.02.003

Cited by 10 publications

(11 citation statements)

References 56 publications

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“…Is WUE Better Related to Carbon Fixation or Stomatal Conductance? Proportional contributions by quotients g s (filled) and A sat (hatched) in explaining variance in WUE i for legume and non-legume agricultural crops from the literature and a controlled environment comparison of the response of physiological traits to nitrogen application [90]. Stepwise multiple regressions were performed on data; *P < 0.001.…”

Section: Water Use Efficiency Of Grain Legume Versus Non-legume Cropsmentioning

confidence: 99%

Crops, Nitrogen, Water: Are Legumes Friend, Foe, or Misunderstood Ally?

Adams

Buchmann

Sprent

et al. 2018

Trends in Plant Science

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Section: Water Use Efficiency Of Grain Legume Versus Non-legume Cropsmentioning

confidence: 99%

Crops, Nitrogen, Water: Are Legumes Friend, Foe, or Misunderstood Ally?

Adams

Buchmann

Sprent

et al. 2018

Trends in Plant Science

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“…A series of successive effects regarding rice growth and environment perspectives from the leaf to the ecosystem have been revealed in our research group, with the aim of clarifying the physiological mechanisms responsible for optimal carbon gain and water use at the leaf level as well as their plastic acclimation to changing ambient environments (Xue et al, 2016b, c); discerning the roles of canopy structure and function in determining canopy carbon gain in individual organisms in different field management conditions and anthropogenic interventions (Lindner et al, 2016;Xue et al, 2016a); increasing the understanding of the influences of climate change, phenology, and rice ecosystem photosynthetic productivity (Xue et al, 2017); and facilitating a discussion of the ecological implications of the life history of rice crops in controlling regional carbon fluxes in the agriculture landscape (Lindner et al, 2015). There are large fluctuations of ecosystem photosynthetic productivity at different geographic sites.…”

Section: Discussionmentioning

confidence: 99%

“…SWC data recorded by the sensors were calibrated by actual SWC measurements conducted in the laboratory with the same soil. SWC was then converted to soil water potential (ψ s ) with standard soil water retention curves of Van Genuchten (1980) as modified by Xue et al (2016b).…”

Section: Field Measurements Of Meteorological Factors and Swcmentioning

confidence: 99%

Linking canopy reflectance to crop structure and photosynthesis to capture and interpret spatiotemporal dimensions of per-field photosynthetic productivity

Wang

Jeong

et al. 2017

Biogeosciences

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Abstract. Nitrogen and water availability alter canopy structure and physiology, and thus crop growth, yielding large impacts on ecosystem-regulating/production provisions. However, to date, explicitly quantifying such impacts remains challenging partially due to lack of adequate methodology to capture spatial dimensions of ecosystem changes associated with nitrogen and water effects. A data fitting, where close-range remote-sensing measurements of vegetation indices derived from a handheld instrument and an unmanned aerial vehicle (UAV) system are linked to in situ leaf and canopy photosynthetic traits, was applied to capture and interpret inter-and intra-field variations in gross primary productivity (GPP) in lowland rice grown under flooded conditions (paddy rice, PD) subject to three nitrogen application rates and under rainfed conditions (RF) in an East Asian monsoon region of South Korea. Spatial variations (SVs) in both GPP and light use efficiency (LUE cabs ) early in the growing season were enlarged by nitrogen addition. The nutritional effects narrowed over time. A shift in planting culture from flooded to rainfed conditions strengthened SVs in GPP and LUE cabs . Intervention of prolonged drought late in the growing season dramatically intensified SVs that were supposed to seasonally decrease. Nevertheless, nitrogen addition effects on SV of LUE cabs at the early growth stage made PD fields exert greater SVs than RF fields. SVs of GPP across PD and RF rice fields were likely related to leaf area index (LAI) development less than to LUE cabs , while numerical analysis suggested that considering strength in LUE cabs and its spatial variation for the same crop type tends to be vital for better evaluation in landscape/regional patterns of ecosystem photosynthetic productivity at critical phenology stages.

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“…SWC data recorded by the EC-5 sensors were then calibrated by actual SWC measurements conducted in the laboratory with the same soil. SWC was then converted to soil water potential (ψ s ) with standard soil-water retention 25 curves of Van Genuchten (1980), referred to Xue et al (2016b).…”

Section: Field Measurements Of Meteorological Factors and Soil Water mentioning

confidence: 99%

Linking canopy reflectance to crop structure and photosynthesis to capture and interpret spatiotemporal dimensions of per-field photosynthetic productivity

Xue¹,

Jeong²,

Ko³

et al. 2016

Preprint

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Abstract. Nitrogen and water availability are two of staple environmental elements in agroecosystems that can substantially alter canopy structure and physiology then crop growth, yielding large impacts on ecosystem regulating/production provisions. However, to date, explicitly quantifying such impacts remains challenging partially due to lack of adequate methodology to capture spatial dimensions of ecosystem changes associated with nitrogen and water effects. A data assimilation, where close-range remote sensing measurements of vegetation indices derived from a hand-held instrument and an unmanned aerial vehicle (UAV) system are linked to leaf and canopy photosynthetic traits quantified at plot level by portable chamber systems, was applied to capture and interpret inter- and intra-field variations in gross primary productivity (GPP) in lowland rice grown under flooded condition (paddy rice, PD) subject to three available nutrient availability and under rainfed condition (RF) in East-Asian monsoon region, South Korea. Spatial variations (SVs) in both GPP and light use efficiency (LUEcabs) early in growing season were amplified by nitrogen addition, and such nutritional effects narrowed over time. Shift planting culture from flooded to rainfed conditions strengthened SVs in GPP and LUEcabs. Intervention of prolonged drought event at late growing season dramatically intensified their SVs that are supposed to seasonally decrease. Nevertheless, nitrogen addition effects on SV of LUEcabs at early growth stage made PD field exert greater SVs than RF field. SV of GPP across PD and RF rice were likely related to LAI development less to LUEcabs while, numerical analysis suggested that consider spatial variation and strength in LUEcabs for the same crop type tends to be vital for better evaluation in landscape/regional patterns of ecosystem photosynthetic productivity at critical phenology stages.

show abstract

Soil water availability and capacity of nitrogen accumulation influence variations of intrinsic water use efficiency in rice

Cited by 10 publications

References 56 publications

Crops, Nitrogen, Water: Are Legumes Friend, Foe, or Misunderstood Ally?

Crops, Nitrogen, Water: Are Legumes Friend, Foe, or Misunderstood Ally?

Linking canopy reflectance to crop structure and photosynthesis to capture and interpret spatiotemporal dimensions of per-field photosynthetic productivity

Linking canopy reflectance to crop structure and photosynthesis to capture and interpret spatiotemporal dimensions of per-field photosynthetic productivity

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