Modelling global change impacts on wheat cropping in south-east Queensland, Australia

Adaptation to climate change of wheat growing in South Australia: Analysis of management and breeding strategies

“…It seems that early sowing (13 May: 2 wks earlier than baseline sowing 27 May) is an effective adaptation strategy in dealing with the adverse effects of climate change (Figure 4). This is in line with the study of Howden et al (1999a). However, it should be noted that initial soil water was reset at 25mm in this study to ensure a reasonable emergence rate.…”

“…The physiological effects of increased atmospheric CO 2 on wheat production were included in the simulations. Modifications have been made to the Wheat module through changes to radiation use efficiency (RUE), transpiration efficiency (TE) and to critical nitrogen concentration (CRC) based on experimental data (Reyenga et al, 1999a;.…”

“…While the former issue has been extensively studied the latter still needs to be comprehensively investigated. Compared with the large number of impact assessment studies, adaptation evaluation is seldom adequately assessed, even though a few studies have considered these two issues together by using process-oriented crop models (Wang et al, 1992;Qureshi and Iglesias, 1994;Seino, 1995;Brklacich and Stewart, 1995;Baethgen and Magrin;1995;Delécolle et al, 1995;Bayasgalan et al, 1996;Rosenzweig and Iglesias, 1998;Howden et al, 1999;Reyenga et al, 1999a, Torriani et al, 2007. However, most climate change risk assessment studies so far end with impact assessment (some examples are Aggarwal and Sinha, 1993;Barry and Geng, 1995;Tubiello et al, 1995;Pilifosova et al, 1996;Karim et al, 1996;Reyenga et al, 1999b;2005a, b;Van Ittersum et al, 2003).…”

“…Howden et al (1999) quantified the potential impacts of climate change on wheat production and explored the benefit of early sowing at nine wheat production areas in Australia for the period centred on 2070 based on the CSIRO (1996) climate change scenarios, with atmospheric CO 2 set at 700ppm. Reyenga et al (1999a) assessed the possible impacts of climate change and increased atmospheric pCO 2 on wheat production in southeast Queensland by applying the same source of climate change scenarios as Howden et al (1999). Management options such as nitrogen application and cultivar maturities were evaluated in dealing with climate change risk.…”

Calibration, uncertainties and use of soybean crop simulation models for evaluating strategies to mitigate the effects of climate change in Southern Brazil

“…Process modified by elevated CO2 FAO It was used the curve present by REYENGA et al (1999) Annex J -Geographic localization for the sites analyzed in the cluster analysis and the soybean production intensity (relative area of pixel with soybean growth), and the cluster analysis using minimum and maximum air temperature and total and standard deviation of rainfall during soybean growth. The star represents the sites selected for simulation 2.4 ¹Annual average of maximum and minimum air temperature from 1961 to 2014; ²Average of maximum and minimum air temperature during soybean growth sowing at 15 Nov; ³DJF= December, January and February (summer); MAM= March, April and May (fall); JJA= June, July and August (winter); SON= September, October and November (spring).…”