Evaluation of three simulation approaches for assessing yield of rainfed sunflower in a Mediterranean environment for climate change impact modelling

Garcı́a-López, J.; Lorite, Ignacio J.; García-Ruiz, Rafael; Domı́nguez, J.

doi:10.1007/s10584-014-1067-6

Cited by 46 publications

(24 citation statements)

References 37 publications

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“…However, this methodology is affected by uncertainties such as the accurate estimation of the length of the sensitive flowering period for olive, which could be affected by high temperatures (Vuletin‐Selak et al ., ), or by a lack of understanding of the impact of extreme heat events during olive flowering. Thus, contrary to other crops such as sunflower (García‐López et al ., ) or maize (Gabaldón‐Leal et al ., , ), there is only very limited information available about these impacts on olive. To fill this knowledge gap, extensive experimental studies aimed at understanding and quantifying the impacts of these events on olive are still required.…”

Section: Discussionmentioning

confidence: 99%

Impact of changes in mean and extreme temperatures caused by climate change on olive flowering in southern Spain

Gabaldón-Leal

Ruiz‐Ramos

Rosa

et al. 2017

Intl Journal of Climatology

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Due to the severe increase projected in future temperatures and the great economic and social importance of olive growing for vast agricultural areas in the Mediterranean Basin, accurate climate change impact assessment on olive orchards is required. The aim of this study is to assess the flowering date and the impact of mean and extreme temperature events on olive flowering in southern Spain under baseline and future climate conditions. To that end, experimental data were obtained from ten olive genotypes: six well‐known olive cultivars in the region, one cultivar, ‘Chiquitita’, obtained via conventional breeding, and three wild olives from the Canary Islands. A site‐specific model calibration was conducted resulting in satisfactory performance with an average error of 2 days for flowering date estimation under baseline and future climate conditions, and a RMSE equal to 5.5 days in the validation process. The outputs from 12 regional climate models from the ENSEMBLES European project with a bias correction in temperature and precipitation were used. Results showed an advance in the olive flowering dates of about 17 days at the end of the 21st century compared with the baseline period (1981–2010), and an increase in the frequency of extreme events around the flowering period. A spatial analysis of results identified the areas in southern Spain that are most vulnerable to climate change impact caused by the lack of chilling hours accumulation (areas located on the Atlantic coast and the south‐eastern coast) and by the occurrence of high temperatures during the flowering period (areas located in the north and north‐eastern areas of the Andalusian region).

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Section: Discussionmentioning

confidence: 99%

Impact of changes in mean and extreme temperatures caused by climate change on olive flowering in southern Spain

Gabaldón-Leal

Ruiz‐Ramos

Rosa

et al. 2017

Intl Journal of Climatology

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“…Flower initiation and anthesis are the most important growth stages affecting the seed yield. A high number of fertile flowers and florets results in high seed yield [39,43].…”

Section: Physiological and Yield Traitsmentioning

confidence: 99%

“…Thus, proper management of organic soil amendments and plant nutrients can play a crucial role in improving plant tolerance and adaptation to severe water deficit stress [35,42]. Sunflower (Helianthus annuus Agronomy 2019, 9, 637 3 of 21 L.) is highly sensitive to water deficit stress from the early flowering stage to the achene filling stage due to inefficient regulation of leaf expansion and transpiration levels under insufficient soil moisture availability [43]. A decline in soil moisture content causes leaf wilting, resulting in a substantial reduction in the yield in semi-arid areas [39].…”

Section: Introductionmentioning

confidence: 99%

Integrative Effects of Rice-Straw Biochar and Silicon on Oil and Seed Quality, Yield and Physiological Traits of Helianthus annuus L. Grown under Water Deficit Stress

et al. 2019

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Water deficit stress can negatively affect oil quality, crop yields and soil infertility. Thus, we investigated the effects of rice-straw biochar, foliar silicon and their combination on quality, yield and physiological traits of sunflower grown under three water deficit stress treatments. Water stress treatments were 50% (WS0; no stress), 70% (WS1; moderate stress) and 90% (WS2; severe stress) depletion of the available soil moisture. The results showed that WS1 and WS2 negatively affected oil quality, mycorrhizal spores, yield and physiological traits of the sunflower; however, biochar, silicon and their combination significantly (p ≤ 0.05) improved most of those traits. Oil and oleic acid contents of sunflower grown under WS2 were decreased by 18% and 25.8% compared to those grown under WS0, respectively. Nevertheless, the biochar and silicon combination resulted in higher oil (10.2%) and oleic acid (12.2%) in plants grown under WS2 than those grown in untreated plots. Also, a significant increase (182% and 277%) in mycorrhizal spores was obtained in soil treated combination of biochar and silicon under WS1 and WS2 in comparison to untreated soil, respectively. On the other hand, plants grown under WS1 and WS2 exhibited reduced seed yield ha−1 by 16.5% and 53.5% compared to those grown under WS0, respectively. However, seed yield ha−1 were increased by 26.8% and 27.1% in plots treated with combined treatment compared to untreated plants, respectively. In addition, the biochar and silicon combination significantly increased stomatal conductance by 21.4% and 12.1%, reduced proline by 56.6% and 51.2% and reduced catalase activity by 13.4% and 17.3% under WS1 and WS2 compared to those grown in untreated plots, respectively. Therefore, the combined treatment of biochar and silicon can minimize and alleviate the negative effects of WS1 and WS2, improve oil quality, physiological traits, microbial activity and seed yield ha−1in sunflower plants.

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“…Although a regional approach is necessary to assess the effects of Climate Change on future yields and changes in crop suitability, it must be kept in mind that there are many uncertainties associated with this kind of yield simulations, including uncertainties in the GCM models and projections of future climate [70], crop model uncertainties [61,71], assumptions, and observation errors [72]. To these, other likely factors such as an increase in extreme rainfall events and droughts may be added, which should also be taken into consideration in future studies [59,69].…”

Section: Biomass and Comentioning

confidence: 99%

Sugar Beet Agronomic Performance Evolution in NW Spain in Future Scenarios of Climate Change

et al. 2020

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Changes in environmental conditions resulting from Climate Change are expected to have a major impact on crops. In order to foresee adaptation measures and to minimize yield decline, it is necessary to estimate the effect of those changes on the evapotranspiration and on the associated irrigation needs of crops. In the study presented herein, future conditions extracted from RCP4.5 scenario of IPCC, particularized for Castilla-y-León (Spain), were used as inputs for FAO crop simulation model (AquaCrop) to estimate sugar beet agronomic performance in the medium-term (2050 and 2070). A regional analysis of future trends in terms of yield, biomass and CO2 sequestration was carried out. An annual ET0 increase of up to 200 mm was estimated in 2050 and 2070 scenarios, with ETc increases of up to 40 mm/month. At current irrigation levels, temperature rise would be accompanied by a 9% decrease in yield and a ca. 6% decrease in assimilated CO2 in the 2050 and 2070 scenarios. However, it is also shown that the implementation of adequate adaptation measures, in combination with a more efficient irrigation management, may result in up to 17% higher yields and in the storage of between 9% and 13% higher amounts of CO2.

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Evaluation of three simulation approaches for assessing yield of rainfed sunflower in a Mediterranean environment for climate change impact modelling

Cited by 46 publications

References 37 publications

Impact of changes in mean and extreme temperatures caused by climate change on olive flowering in southern Spain

Impact of changes in mean and extreme temperatures caused by climate change on olive flowering in southern Spain

Integrative Effects of Rice-Straw Biochar and Silicon on Oil and Seed Quality, Yield and Physiological Traits of Helianthus annuus L. Grown under Water Deficit Stress

Sugar Beet Agronomic Performance Evolution in NW Spain in Future Scenarios of Climate Change

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