Light Interception and Radiation Use Efficiency from a Field of Potato (Solanum tuberosum L.) and Sulla (Hedysarum coronarium L.) Intercropping in Tunisia

Rezig, Mourad; Sahli, Ali; Hachicha, Mohamed; Jeddi, Faysal Ben; Harbaoui, Y.

doi:10.3923/ajcs.2013.378.392

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…In this study, TDM accumulation was positively related to interception of PAR ( Figure. 4), which is a finding in line with the results reported by other researchers (Li et al, 2009;Miranzadeh et al, 2011, Rezig et al, 2013a, 2013b. Miralles and Slafer (1997) indicated that post-anthesis RUE appeared to be closely and positively associated with the number of grains set per unit biomass at anthesis in winter wheat.…”

Section: Discussionsupporting

confidence: 82%

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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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Section: Discussionsupporting

confidence: 82%

“…Equally, different crops have been found to be closely correlated with cumulative radiation intercepted by their foliage e.g. Sulla (Rezig et al, 2013b), green been (Rezig et al, 2010(Rezig et al, , 2013a and potato (Rezig et al, 2010(Rezig et al, , 2013a(Rezig et al, , 2013b …”

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

Self Cite

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“…It was obtained under near-optimal conditions for high yields, with ample N, P and K and sufficient soil water supply throughout the growing season. The obtained high RUE is comparable to RUE values of potatoes with good management (Sinclair and Muchow, 1999;Rezig et al, 2013;Zhou et al, 2016). Values of RUE at 8 MAP, which coincided with the peak of dry season throughout this study, and RUE values from Benue were similar to other reported values of 0.69 to 1.6 g DM MJ -1 IPAR (Pellet and El-Sharkawy, 1997;Ezui et al, 2017b).…”

Section: Radiation Use Efficiencysupporting

confidence: 87%

“…Further, improving the radiation use efficiency appears to present the greatest opportunity for improving cassava yield potential. For instance, average RUE of 1.16 g DM MJ IPAR (Ezui et al, 2017b) recorded from −1 experiments in West Africa is only 36 % of the RUE of other C3 plants such a potato (Rezig et al, 2013;Zhou et al, 2017). Understanding the basic physiology of cassava and relations among or between parameters and crop growth rate (CGR) will enable us to optimize crop management and improve crop growth simulation models (Kiniry et al, 1999;De Souza et al, 2017).…”

Section: Cassava Crop Characteristics For Potential Yieldmentioning

confidence: 99%

“…RUE is cultivar-specific, and the highest values can only be achieved under optimal agronomic practises. For instance, with good management, RUE values for potatoes (a C3 species as is cassava) range between 2.6 and 3.1 g DM MJ -1 IPAR (Sinclair and Muchow, 1999;Rezig et al, 2013;Zhou et al, 2016). Furthermore, reported light extinction coefficient (k) values of cassava from literature are similar to those of other crops (0.50 -0.88), while maximum leaf area index (LAI) ranges from 3 to 11 m 2 m -2 (Veltkamp, 1985;Pellet and El-Sharkawy, 1997;Ezui et al, 2017b).…”

Section: Introductionmentioning

confidence: 99%

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Growing out of hunger: towards an improved understanding of the water and nutrient limited yield of cassava

Adiele

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Cassava is an important staple crop for the rural population but also more and more used as a cash and industrial crop, contributing to economic development of sub-Saharan Africa (SSA). Therefore, sustainable intensification of cassava has become necessary, but the crop's yield potential is unknown. This study aimed to understand the yield potential of cassava and the dynamics of nutrient limitations in relation to water availability, to obtain better insight and a theoretical understanding of how the crop responds to nutrient availability and application of fertilizers in different agro-ecologies. Field experiments were conducted in different agro-ecologies: in Cross River (Tropical Rainforest), Edo (Forest Transition Savanna) and Benue (Guinea Savanna) in 2016 and 2017. Treatments included NPK fertilizers in four application rates, N, P and K omission plots and plots combining the highest rates of N and P (300 kg N ha-1 , 100 kg P ha-1) with respectively 60, 120, 180, 240 and 300 kg K ha-1 , and highest rate of N, P and K combined with secondary and micronutrients. Fresh and dry biomass and nutrient contents of leaves, stems and storage roots were recorded at 4 and 8 months after planting and at final harvest. At set times, light interception and detailed plant characteristics were measured, including canopy dimensions, number of leaves and leaf scars. The measured values were used to calculate other variables, including leaf angle distribution, light extinction coefficient, leaf area index (LAI) and radiation use efficiency (RUE). The LINTUL-Cassava model was recalibrated and tested for accuracy of water limited yield predictions. Further, model components were added that allowed us to compute N, P and K limited growth. Foremost, we evaluated the cassava yield potential and nutrient use efficiency when supplied with various N, P and K rates and at high N and P rates with increasing rates of K. Measured storage root dry matter (DM) yields ranged between 11 and 35 t DM ha-1. The largest yields were obtained at the largest rates of K with a mean agronomic efficiency of 60, 162 and 51 kg DM of storage roots per kg of N, P and K applied. Increasing the supply of K improved yields and therefore also the agronomic efficiency of N and P. Storage root yield responses to applied N, P and K fertilizers (2-18, 3-16 and 3-22 t DM ha-1 , respectively) varied across the agro-ecologies, reflecting variability in potential yields and applied NPK ratios. Addition of secondary and micronutrients did not affect cassava storage root yield. We found that the caloric energy yield of cassava per kg of N applied is 2.7 times larger than the value reported for maize. For the nutrient uptake dynamics in cassava, on average, 67, 61 and 52 % of total N, P and K uptake were already taken up at four months after planting (MAP), respectively. The maximum uptake rates for N, P and K were 0.21, 0.03 and 0.12 g m-2 d-1 respectively at about four MAP. Nutrient dilution curves for N, P and K at different application rates were quantified for the ...

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Fluctuations in Radiation Use Efficiency Throughout the Growth Cycle in Diploid Potato Crop

Saldaña-Villota,

Cotes-Torres

2024

Am. J. Potato Res.

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The capture of incoming solar radiation under unlimited light, water, and nutrient conditions by plant canopies and converting it into biomass has been described as radiation use efficiency (RUE). RUE has been computed as a function of biomass accumulation and intercepted photosynthetically active radiation without considering the loss of photoassimilates due to respiratory processes. This study evaluated the RUE in diploid potato crop (Solanum phureja Juz. et Buk.) across six experiments in Colombia. Total biomass was measured during the crop season from the early vegetative stage through maturity. However, this proposal involves not only the total biomass accumulated concerning the amount of photosynthetically active radiation intercepted but also took into account the losses by respiration, following Thornley respiration approach. This research demonstrates that the RUE is not a constant value as the respiration process leads to RUE values being variable in a non-linear way over time. The daily RUE simulation, conducted through an interpolation process, revealed significant variation from emergence to the end of the cycle. This indicates an error in assuming a constant RUE throughout the entire growth period, particularly in assessing its physiological impact across the entire growth and development crop cycle.

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Light Interception and Radiation Use Efficiency from a Field of Potato (Solanum tuberosum L.) and Sulla (Hedysarum coronarium L.) Intercropping in Tunisia

Cited by 7 publications

References 23 publications

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

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

Growing out of hunger: towards an improved understanding of the water and nutrient limited yield of cassava

Fluctuations in Radiation Use Efficiency Throughout the Growth Cycle in Diploid Potato Crop

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