Wheat productivity in the Mediterranean Ebro Valley: Analyzing the gap between attainable and potential yield with a simulation model

Abeledo, L. Gabriela; Savin, Roxana; Slafer, Gustavo A.

doi:10.1016/j.eja.2007.12.001

Cited by 72 publications

(50 citation statements)

References 38 publications

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“…The yield gap between the potential and the attainable are reduced through the implementation of diverse strategies, for example, using proper soil management practices [101] and optimum amount of nitrogenous fertilizer [106]. According to Jeon et al [107], the yield potential of rice could be raised by modification of plant architecture, and enhancement of photosynthesis.…”

Section: Narrowing the Yield Gap: Lessons From Other Regionsmentioning

confidence: 99%

Raising Crop Productivity in Africa through Intensification

Tadele

2017

Agronomy

114

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Section: Narrowing the Yield Gap: Lessons From Other Regionsmentioning

confidence: 99%

Raising Crop Productivity in Africa through Intensification

Tadele

2017

Agronomy

114

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“…Model users were provided with phenological observations and yields from each location and for both crop varieties. Total aboveground biomass and average grain weights were also provided for the Spanish site (Cartelle et al 2006, Abeledo et al 2008. As an alternative to the generalised soil type used for the model simulations (clay loam), modellers had the option to use information on the actual soil of the site for calibration.…”

Section: Sowing Date Soil and Calibration Datamentioning

confidence: 99%

Temperature and precipitation effects on wheat yield across a European transect: a crop model ensemble analysis using impact response surfaces

Pirttioja¹,

Carter²,

Fronzek³

et al. 2015

Clim. Res.

137

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This study explored the utility of the impact response surface (IRS) approach for investigating model ensemble crop yield responses under a large range of changes in climate. IRSs of spring and winter wheat Triticum aestivum yields were constructed from a 26-member ensemble of process-based crop simulation models for sites in Finland, Germany and Spain across a latitudinal transect. The sensitivity of modelled yield to systematic increments of changes in temperature (-2 to + 9 degrees C) and precipitation (-50 to + 50%) was tested by modifying values of baseline (1981 to 2010) daily weather, with CO2 concentration fixed at 360 ppm. The IRS approach offers an effective method of portraying model behaviour under changing climate as well as advantages for analysing, comparing and presenting results from multi-model ensemble simulations. Though individual model behaviour occasionally departed markedly from the average, ensemble median responses across sites and crop varieties indicated that yields decline with higher temperatures and decreased precipitation and increase with higher precipitation. Across the uncertainty ranges defined for the IRSs, yields were more sensitive to temperature than precipitation changes at the Finnish site while sensitivities were mixed at the German and Spanish sites. Precipitation effects diminished under higher temperature changes. While the bivariate and multi-model characteristics of the analysis impose some limits to interpretation, the IRS approach nonetheless provides additional insights into sensitivities to inter-model and inter-annual variability. Taken together, these sensitivities may help to pinpoint processes such as heat stress, vernalisation or drought effects requiring refinement in future model developmen

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“…Recently, yield potential and yield gap analysis have been used to identify yield-limiting factors and help farmers make decisions about water and N applications (Abeledo et al, 2008;Anderson, 2010;Alijani et al, 2012;Mueller et al, 2012). In our study, the potential yield is defined as the yield attained when a cultivar is grown under optimal water and nutrient conditions and pests and diseases are effectively controlled, whereas the attainable yield is defined as the yields obtained at research stations with the recommended fertilization, irrigation, and pest control practices.…”

Section: Introductionmentioning

confidence: 99%

Effect of nitrogen and water deficit type on the yield gap between the potential and attainable wheat yield

Liu

Wang

Thorp

et al. 2015

Chilean J. Agric. Res.

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Water deficit and N fertilizer are the two primary limiting factors for wheat yield in the North China plain, the most important winter wheat (Triticum aestivum L.) production area in China. Analyzing the yield gap between the potential yield and the attainable yield can quantify the potential for increasing wheat production and exploring the limiting factors to yield gap in the high-yielding farming region of North China Plain. The Decision Support System for Agrotechnology Transfer (DSSAT) model was used to identify methods to increase the grain yield and decrease the gap. In order to explore the impact of N and cultivars on wheat yield in the different drought types, the climate conditions during 1981 to 2011 growing seasons was categorized into low, moderate, and severe water deficit classes according to the anomaly percentage of the water deficit rate during the entire wheat growing season. There are differences (P < 0.0001) in the variations of the potential yields among three cultivars over 30 yr. For all three water deficit types, the more recent cultivars Jimai22 and Shijiazhuang8 had higher yields compared to the older 'Jinan17'. As the N fertilizer rate increased, the yield gap decreased more substantially during the low water deficit years because of the significant increase in attainable yield. Overall, the yield gaps were smaller with less water stress. Replacement of cultivars and appropriate N fertilizer application based on the forecasted drought types can narrow the yield gap effectively.

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Wheat productivity in the Mediterranean Ebro Valley: Analyzing the gap between attainable and potential yield with a simulation model

Cited by 72 publications

References 38 publications

Raising Crop Productivity in Africa through Intensification

Raising Crop Productivity in Africa through Intensification

Temperature and precipitation effects on wheat yield across a European transect: a crop model ensemble analysis using impact response surfaces

Effect of nitrogen and water deficit type on the yield gap between the potential and attainable wheat yield

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