Mitigating climate change impact on soybean productivity in India: a simulation study

Modelling soybean yield responses to seeding date under projected climate change scenarios

“…Rising temperature was generally considered as a negative factor for soybean production in warm regions (Bao et al 2015b;Mall et al 2004), or as a positive factor for soybean production in cool regions (Wolf 2002b). In this study region, increasing temperature in the near and distant future may not often reach the level for heat stress on photosynthesis for which the cardinal temperature is above 32 °C for soybean (Hatfield et al 2011;Vu et al 1997).…”

“…In these studies, soybean yields under climate change scenarios were often simulated with similar seeding dates to the baseline conditions. Simulated soybean yields increased or decreased depending mostly on the study location (Boote 2011;Bootsma et al 2005;Mall et al 2004). One complication is that the growing duration for a given cultivar would be shortened by the increased temperature in a warmer future climate, while the soybean seeding date may be shifted later to avoid potential heat stresses in southeastern USA (Bao et al 2015a).…”

“…This model was originally developed as CROPGRO for simulating soybean growth and development with a daily time step (Boote et al 1998). The CSM-CROPGRO-Soybean model has been impact studies, such as in southeastern USA (Bao et al 2015b;Carbone et al 2003), southern Québec in Canada (Brassard and Singh 2007), India (Mall et al 2004), and France (Wolf 2002a). …”

Response of Soybean Yield to Daytime Temperature Change during Seed Filling: A Long-Term Field Study in Northeast China

“…Effects decreased seed growth rates were found at maximum daytime temperature over 30ºC (Egli and Wardlaw, 1980;Gibson and Mullen, 1996). Predictions from mechanistic and empirical models showed that a rise in surface air temperature during growing season would severely reduce soybean grain yield (Lal et al, 1999;Lobell and Asner, 2003;Mall et al, 2004). In central India, soybean yields were found to be more vulnerable to an increase in maximum temperature than decrease in minimum temperature (Lal et al, 1999).…”

“…Indeed, previous studies have investigated the effects of increased temperature on soybean yield. Crop modeling studies suggested that there would be a decrease in soybean yield in some future climate scenarios in India when the effect of rise in surface air temperature was considered (Lal et al, 1999;Mall et al, 2004). Empirical analysis revealed that growing season temperature had a negative impact on soybean yields at many locations in the United States and there was an average of 17% reduction in yield for every 1ºC rise (Lobell and Asner, 2003).…”