Estimating Rice Yield under Changing Weather Conditions in Kenya Using CERES Rice Model

Table 6

Critical temperatures for the development of rice plant at different growth stages.

Growth stages	Critical temperature (°C)
	Low	High	Optimum
Germination	16–19	45	18–40
Seedling emergence	12	35	25–30
Rooting	16	35	25–28
Leaf elongation	7–12	45	31
Tillering	9–16	33	25–31
Initiation of panicle primordial	15	—	—
Panicle differentiation	15–20	30	—
Anthesis	22	35-36	33
Ripening	12–18	>30	20–29

Source: Yoshida [12].