Fig. 2. Inputs (soil temperatures), Predicted time developing seedlings spend at suboptimal, optimal, or supraoptimal temperatures, and the modeled emergence time from planting. (A) Pattern of soil temperature at 5-cm depth for the period DOY 115 through DOY 180. Red, green, and blue backgrounds indicate temperatures defined as supraoptimal, optimal, and suboptimal temperatures, respectively. Black bars show potential planting periods A, B, C, and D used in analysis. (B) Distribution of temperature regimes experienced by developing cotton seedlings from planting to predicted emergence. (C) Predicted time from planting to emergence for cotton as determined from the malate synthase based model (MaGi), compared to a model based on accumulated heat units (DD60).