Interception of photosynthetically active radiation and radiation-use efficiency of wheat, field pea and mustard in a semi-arid environment

O’Connell, M.; O'Leary, G.; Whitfield, D.M.; Connor, David J.

doi:10.1016/s0378-4290(03)00156-4

Cited by 100 publications

(47 citation statements)

References 54 publications

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“…It can be speculated that in the free air carbon dioxide enrichment study cited above , with an early start of the water deficit, plants adjusted to the drought stress primarily by reducing the transpiring leaf area, and consequently the radiation absorption and not the stomatal conductance of the remaining leaves. This is supported by field studies showing that radiation-use efficiency is hardly affected by early drought stress (Stone et al, 2001;O'Connell et al, 2004) and that the ratio of actual to potential evapotranspiration is independent of the water supply (Brisson and Casals, 2005).…”

Section: Radiation-use Efficiencymentioning

confidence: 83%

“…It has been demonstrated that the decrease in available water under drought stress first affects leaf expansion and then stomatal conductance and gas exchange (Sadras and Milroy, 1996). The cessation of leaf area growth at low available water levels and the accelerated senescence of the existing leaves result in a decrease in radiation absorption by the green canopy (Brisson and Casals, 2005;Foulkes et al, 2001;Jamieson et al, 1998;O'Connell et al, 2004). This process * Corresponding author: remy.manderscheid@fal.de and the decrease in radiation-use efficiency due to the reduction in stomatal conductance (Foulkes et al, 2001;Jamieson et al, 1995) are responsible for the growth reduction under drought.…”

Section: Introductionmentioning

confidence: 99%

“…This process * Corresponding author: remy.manderscheid@fal.de and the decrease in radiation-use efficiency due to the reduction in stomatal conductance (Foulkes et al, 2001;Jamieson et al, 1995) are responsible for the growth reduction under drought. However, it seems that drought stress reduces plant growth more through a reduction of the amount of radiation intercepted than reduced radiation-use efficiency (Brisson and Casals, 2005;Jamieson et al, 1998;O'Connell et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Drought stress effects on wheat are mitigated by atmospheric CO2 enrichment

Manderscheid¹,

Weigel²

2007

Agron. Sustain. Dev.

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-The atmospheric CO 2 concentration is predicted to increase and to generate a rise in the global surface temperature, and change the seasonal precipitation pattern. This could aggravate the severity of summer drought conditions and affect crop yield. We studied the effect of the interaction of CO 2 and water supply on seasonal absorption of photosynthetically active radiation and radiation-use efficiency of aboveground biomass production to understand the processes contributing to final yield. Wheat was grown over two years in open-top chambers at present or future (+280 ppmv) atmospheric CO 2 concentration and under sufficient water supply or drought stress in lysimeters with a soil depth of 0.4 m (first year) or in the field with unrestricted root growth (second year). Drought stress was started after the first node stage by halving the water supply. Our results show that under sufficient watering, CO 2 enrichment did not affect the green area index or seasonal radiation absorption. Drought stress always decreased the green area index and accelerated canopy senescence, which in the second year resulted in a decrease of 23% in the seasonal radiation absorption under the present atmospheric CO 2 concentration. CO 2 enrichment stimulated the green area index under drought stress in the second year and seasonal radiation absorption was only decreased by 16%. Radiation-use efficiency was reduced by drought and increased by CO 2 elevation and the CO 2 effect was higher under restricted (+60%) than under sufficient watering (+32%). This implies that CO 2 enrichment enhanced final biomass and grain yield by less than 10% under well-watered conditions and by more than 44% under drought stress conditions, respectively. This study indicates that the increase in atmospheric CO 2 concentration will attenuate the effects of summer drought on wheat grain yield.CO 2 enrichment / drought / leaf area index / radiation absorption / radiation-use efficiency / water-use efficiency / wheat

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Section: Radiation-use Efficiencymentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Drought stress effects on wheat are mitigated by atmospheric CO2 enrichment

Manderscheid¹,

Weigel²

2007

Agron. Sustain. Dev.

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“…Also, Dreccer et al (2000) observed that low nitrogen conditions affected wheat growth via reduction of the intercepted PAR. The reduction should be on the leaf area dynamics to limit IPAR in arid environments (O'Connell et al, 2004;Miranzadeh et al, 2011). As shown by data (Table 5), RUE was affected and decreased under deficit irrigation and low nitrogen conditions (figure 4).…”

Section: Discussionmentioning

confidence: 99%

Deficit Irrigation of Durum Wheat (Triticum durum Desf): Effects on Total Dry Matter Production, Light Interception and Radiation Use Efficiency Under Different Nitrogen Rates

M’hamed¹,

Rezig²,

Naceur³

2014

SAR

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On-farm trial was conducted from 2005 to 2008 to test the hypothesis that reduction of total dry matter (TDM) in crops can occur after a decreased radiation use efficiency (RUE) due to shortage of nitrogen and irrigation, we applied three irrigations treatments (D1, D2 and D3) and four nitrogen rates (N1, N2, N3 and N4). Photosynthetic active radiation absorbed or cumulative light interception (PARabs) and RUE of Durum wheat were measured. Results showed that D1N1 treatment recorded the highest LAI, PARabs, TDM and RUE. The maximum LAI was obtained 140 DAS (days after sowing) under treatment D1N2 (6.42) and the lowest LAI at the same phase belonged to treatment D2N4 (3.86). At the harvest, the maximum of TDM was 1487 g m -2 recorded under treatment D1N1. The minimum value obtained was 930 g m -2 under treatment D3N4. Also, PARabs was improved under D1N1 and D1N2 treatments. With reduced N application rates and irrigation doses, PARabs was decreased and the lowest values were observed under D3N4 condition. The RUE, varied from 1.55 g MJ -1 (D1N1) to 1.24 g MJ -1 (D3N4), was affected and decreased under deficit irrigation and low nitrogen conditions. In conclusion, the results of this study seem to show that D1N1 and D1N2 treatments can be beneficial for Durum wheat under field conditions in semi arid zone of Tunisia, for the purpose of improving RUE and maximizing grain yield.

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“…This may be explained by the fact that at higher density of leaves, higher shade occurs within the canopy, thus radiation interception is higher [50]. In fact, due to the limited penetration of the visible signal in the canopy, the three dimensional complexity of a crop canopy can hardly be seen by optical remote sensing imagery; hence NDVI remains a broad indicator of crop development, in particular for biomass.…”

Section: Strengths and Weaknessesmentioning

confidence: 99%

A Life-Size and Near Real-Time Test of Irrigation Scheduling with a Sentinel-2 Like Time Series (SPOT4-Take5) in Morocco

et al. 2014

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This paper describes the setting and results of a real-time experiment of irrigation scheduling by a time series of optical satellite images under real conditions, which was carried out on durum wheat in the Haouz plain (Marrakech, Morocco), during the 2012/13 agricultural season. For the purpose of this experiment, the irrigation of a reference plot was driven by the farmer according to, mainly empirical, irrigation scheduling while test plot irrigations were being managed following the FAO-56 method, driven by remote sensing. Images were issued from the SPOT4 (Take5) data set, which aimed at delivering image time series at a decametric resolution with less than five-day satellite overpass similar to the time OPEN ACCESSRemote Sens. 2014, 6 11183 series ESA Sentinel-2 satellites will produce in the coming years. With a Root Mean Square Error (RMSE) of 0.91mm per day, the comparison between daily actual evapotranspiration measured by eddy-covariance and the simulated one is satisfactory, but even better at a five-day integration (0.59mm per day). Finally, despite a chaotic beginning of the experiment-the experimental plot had not been irrigated to get rid of a slaking crust, which prevented good emergence-our plot caught up and yielded almost the same grain crop with 14% less irrigation water. This experiment opens up interesting opportunities for operational scheduling of flooding irrigation sectors that dominate in the semi-arid Mediterranean area.

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Interception of photosynthetically active radiation and radiation-use efficiency of wheat, field pea and mustard in a semi-arid environment

Cited by 100 publications

References 54 publications

Drought stress effects on wheat are mitigated by atmospheric CO2 enrichment

Drought stress effects on wheat are mitigated by atmospheric CO2 enrichment

Deficit Irrigation of Durum Wheat (Triticum durum Desf): Effects on Total Dry Matter Production, Light Interception and Radiation Use Efficiency Under Different Nitrogen Rates

A Life-Size and Near Real-Time Test of Irrigation Scheduling with a Sentinel-2 Like Time Series (SPOT4-Take5) in Morocco

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