Effects of nitrogen application and supplemental irrigation on canopy temperature and photosynthetic characteristics in winter wheat

Yang, Dongqing; Wang, Dong; Luo, Yongli; Song, Wei; Cai, Ti; Li, Y.; Yin, Yue; Wang, Z. L.

doi:10.1017/s0021859617000946

Cited by 13 publications

(11 citation statements)

References 48 publications

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“…Fois et al (2009) isolated the role of this second mechanism by detecting even after irrigation T c differences using IRTs that viewed canopies only and by detecting leaf conductance differences using a viscous flow porometer. With decreasing N level, Yang et al (2018) found increasing leaf temperature using a handheld thermal camera and found decreasing stomatal conductance using a portable infrared gas analyzer. The third mechanism is that lower N levels can shrink the rooting volume (Nielsen and Halvorson, 1991).…”

Section: Canopy Temperaturementioning

confidence: 99%

“…In contrast, the first mechanism may be less relevant in 2017 because any lag in canopy development due to milder N stress was largely caught up by the beginning of the reproductive period. The second mechanism is that lower N levels can reduce stomatal conductance (Peñuelas et al 1996;Shangguan et al 2000;Fois et al 2009;Yang et al 2018) and modify other leaf properties and/or behaviors (Saneoka et al 2004). Fois et al (2009) isolated the role of this second mechanism by detecting even after irrigation T c differences using IRTs that viewed canopies only and by detecting leaf conductance differences using a viscous flow porometer.…”

Section: Canopy Temperaturementioning

confidence: 99%

“…With such possible confounding in mind, this study targets two objectives. First, it aims to contribute to greater understanding of N effects on soil water changes (Ogola et al 2002;Lenka et al 2009;Rudnick and Irmak 2014a, b;Rudnick et al 2017) and on canopy temperature (Seligman et al 1983;Nielsen and Halvorson, 1991;Peñuelas et al 1996;Tilling et al 2007;Fois et al 2009;Mon et al 2016;Carroll et al 2017;Yang et al 2018) in corn (Zea mays L.) under different water levels. Soil water loss and canopy temperature minus air temperature were quantified for corn receiving various water × N treatments.…”

Section: Introductionmentioning

confidence: 99%

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Differences in soil water changes and canopy temperature under varying water × nitrogen sufficiency for maize

Rudnick

DeJonge

et al. 2020

Irrig Sci

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Crop nitrogen (N) status is known to affect crop water status and crop water use. To investigate further the N effects on soil water changes and on canopy temperature, three water levels × four N levels were imposed on two growing seasons of maize in west central Nebraska, USA. Soil water changes were measured using a neutron probe, whereas canopy temperature was measured using infrared thermometers on a ground-based mobile platform. At all water levels, soil water losses over monthlong intervals were generally greater as N levels increased. Given equal water levels, early afternoon canopy temperatures were usually lower with higher N levels, but no trend or even the opposite trend was occasionally observed. Jointly considering canopy reflectance and soil water depletion shows potential to explain much of the variation in estimated instantaneous water use among plots. However, determining the relative contributions of the canopy and soil factors on a particular day may require season-to-date knowledge of the crop. Further research on assimilating such sensor data for a combined stress coefficient would improve crop modeling and irrigation scheduling when variable water sufficiency and variable N sufficiency are simultaneously significant.

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Section: Canopy Temperaturementioning

confidence: 99%

Section: Canopy Temperaturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Differences in soil water changes and canopy temperature under varying water × nitrogen sufficiency for maize

Rudnick

DeJonge

et al. 2020

Irrig Sci

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“…In arid areas, the effect of irrigation and fertilization on crop's photosynthesis is very obvious [41][42][43][44] . The increase in irrigation and fertilization will promote the photosynthesis and transpiration of crops [45,46] . However, once a threshold value is exceeded, excessive fertilization and irrigation will inhibit the photosynthetic characteristics of crops [47] .…”

Section: Table 4 Effects Of Different Irrigation and Nitrogen Levels On Nitrogen Transportation In Leaves And Stems And Nitrogen Incremenmentioning

confidence: 99%

Coupling effects of water and nitrogen on photosynthetic characteristics, nitrogen uptake, and yield of sunflower under drip irrigation in an oasis

Wang

et al. 2021

International Journal of Agricultural and Biological Engineering

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An experiment was conducted in an oasis area in northwest China to assess the coupling effects of water and nitrogen supply through drip irrigation on photosynthetic characteristics, nitrogen uptake, and yield of sunflower (Helianthus annuus L.), as well as the nitrate distribution in the root-zone soil. The experiment included three irrigation levels (210 [W1], 300 [W2], and 390 [W3] mm), three nitrogen levels (162 [N1], 232 [N2], and 302 [N3] kg/hm 2 ), and control treatment (no fertilization during whole growth period and only irrigated at the budding stage) . A nitrogen content over-accumulation in the soil was observed under the low irrigation amount with high fertilizer supply, which cannot enhance the sunflowers' absorption of nitrogen. Excessive irrigation caused leach of the soil nitrogen, reduced nitrogen content in the root-zone soil (0-40 cm) and limited nitrogen uptake by the crop. Although low irrigation amount with high fertilizer supply can increase the nitrogen content in the soil, it cannot enhance the sunflowers' absorption of nitrogen . At the vegetative stage of sunflower growth, the accumulation of nitrogen in the organs was mainly concentrated in the leaves, while it was transferred to the flower disk at the reproductive growth stage. Reasonable coupling of water and nitrogen improved the transport of nitrogen from leaves and stems to the flower disk and promoted the formation of yield components. Six regression equations were established with irrigation and fertilization amount as independent variables, and seed rate, seed weight per flowerdisk, 1000 grain weight, yield, water use efficiency and nitro gen partial factor productivity as dependent variables, respectively. Multiple regression and spatial analysis suggested that the irrigation amount of 241.62-253.35 mm and the fertilization application of 202.02-209.40 N kg/hm 2 was a good irrigation strategy, under which all six factors exceed 75% of their maxima, and the yield of sunflower reached 3 229.3 kg/hm 2 .

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“…Low-N stress significantly decreased Chl content and rapid light-response curves of Fm', Fs, qN, Fv/Fm, Fv/F0, and actual photochemical efficiency of PSII of leaves in maize (Wu et al 2019). N fertilizer application significantly increased electron donor and acceptor performance of the PSII reaction center in winter wheat (Yang et al 2018). Our results showed that LNC in sugar beet and the corresponding ChlF parameters varied significantly at different N levels, providing a rich source of information and a theoretical basis for estimating plant nitrogen status using the ChlF technique.…”

mentioning

confidence: 95%

Estimation of total nitrogen content in sugar beet leaves based on chlorophyll fluorescence parameters

Fei¹,

Fan²,

Fan³

et al. 2020

Photosynt.

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Two sugar beet cultivars, Beta 356 and KWS9147, were grown in field trials at four different nitrogen contents (0, 75, 150, and 225 kg ha −1), and each fertilizer treatment was divided into four applications (100% prior to seeding; 70% prior to seeding and 30% at canopy development; 50% prior to seeding and 50% at canopy development; 30% prior to seeding and 70% at canopy development) in two consecutive growing seasons. Leaf chlorophyll fluorescence (ChlF) parameters and leaf nitrogen content were measured simultaneously at different growth stages, establishing an evaluation model of leaf nitrogen nutrition. The results showed that the correlation between ChlF parameters and leaf nitrogen content reached 0.7099 ** (canopy development), 0.8266 ** (storage root development) and 0.8607 ** (sugar accumulation stage). We conclude that the ChlF parameters can provide a decision-making method for N diagnosis and regulation in field production.

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Effects of nitrogen application and supplemental irrigation on canopy temperature and photosynthetic characteristics in winter wheat

Cited by 13 publications

References 48 publications

Differences in soil water changes and canopy temperature under varying water × nitrogen sufficiency for maize

Differences in soil water changes and canopy temperature under varying water × nitrogen sufficiency for maize

Coupling effects of water and nitrogen on photosynthetic characteristics, nitrogen uptake, and yield of sunflower under drip irrigation in an oasis

Estimation of total nitrogen content in sugar beet leaves based on chlorophyll fluorescence parameters

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