TABLE 5.

Results of fixed effect model to estimate the significance of main effects of heading date and plant height and their interactions on PLAD.

Fixed effects on PLAD response	Northam 2016			Katanning 2016
	F	P	Estimate (SE)	F	P	Estimate (SE)
Heading date	248.10	P < 0.001	−1.707(0.11)	82.13	P < 0.001	−0.8440(0.09)
Height	5.36	P = 0.021	0.210 (0.09)	34.02	P < 0.001	0.5149 (0.09)
Heading Date.Height	2.07	P = 0.150	−0.022(0.01)	2.71	P = 0.100	0.0244 (0.01)
	Northam 2017			Katanning 2017
	F	Sig	Estimate (SE)	F	Sig	Estimate (SE)
Heading date	208.40	P < 0.001	−1.902(0.13)	406.71	P < 0.001	−2.202(0.11)
Height	7.20	P = 0.008	−0.293(0.11)	0.05	P = 0.819	0.0183 (0.08)
Heading Date.Height	0.29	P = 0.591	0.010 (0.02)	0.60	P = 0.439	0.0144 (0.02)
	Northam 2018			Manjimup 2018
	F	Sig	Estimate (SE)	F	Sig	Estimate (SE)
Heading date	219.16	P < 0.001	−1.298(0.09)	285.67	P < 0.001	−1.526(0.09)
Height	63.69	P < 0.001	−0.4824(0.06)	153.26	P < 0.001	−1.015(0.08)
Heading Date.Height	0.19	P = 0.665	0.0047 (0.01)	1.29	P = 0.257	−0.0140(0.01)