Performance of Sorghum Varieties under Variable Rainfall in Central Tanzania

Table 7

Crop parameters for three sorghum cultivars used for the simulations in APSIM.

Parameter		Source	Units	Macia	Tegemeo	Pato
Thermal time accumulation	End of juvenile phase to panicle initiation	C	C day	230	270	275
	Flag stage to flowering	C	C day	195	170	175
	Flowering to start of grain filling	C	C day	80	80	100
	Flowering to maturity	C	C day	675	760	760
	Maturity to seed ripening	L	C day	1	1	1
Photoperiod	Day length photoperiod to inhibit flowering	D	H	11.5	11.5	11.5
	Day length photoperiod for insensitivity	D	H	13.5	13.5	13.5
	Photoperiod slope	L	C/h	0.01	0.01	0.01
	Base temperature	L	C day	8	8	8
	Optimum temperature	D	C day	30	30	30
	Plant height (max)	O	mm	1290	1650	1780

C: calibrated; D: default; L: literature; O: observed.