text: The inputs for DSSAT simulation include daily weather data, soil parameters, crop calendar data and man- 
  agement information. All the inputs are formatted at a 0.5° × 0.5° grid resolution which are computed by high- 
  performance computers. Weather data is from the AgMERRA dataset, including maximum and minimum tem- 
  peratures, precipitation, total radiation and humidity. Crop calendar data were from the Center for Sustainability 
  and Global Environment (SAGE), in which the existing observations of crop planting and harvesting dates are 
  gridded formatted at a resolution of 5 min50. For management information, fertilizer applications, irrigation 
  and other management practices are required. A crop-specific gridded dataset of nitrogen fertilizer application 
  for the world was developed by integrating national and subnational fertilizer application data from a variety of 
  sources, which is used to set up current fertilizer application rates for maize in each grid cell. Soil parameters 
  are from the International Soil Profile Dataset (WISE), including soil texture, bulk density, pH, organic carbon 
  content and fraction of calcium carbonate for each of five 20 cm thick soil layers51. All the soil data is allocated 
  to be in accordance with the request of DSSAT simulation; the missing soil parameters for organic soils were 
  adopted from FAO soil dataset. 