Table 2.

P values from the analysis of variance for the effects of preceding crop and N fertilizer rate on yield and yield components of malting barley in Chole. Environments (year and location), replications within environments and their interactions with fixed effects were considered as random effects.

Effects	Tiller plant−1 [No]	Plant height [cm]	Harvest index [%]	Grain yield [kg ha−1]	Biomass yield [kg ha−1]	Seed weight [mg]	Grain protein [%]
Preceding crop [PC]	0.0797	0.0002	<0.0001	<0.0001	<0.0001	<0.0001	0.2627
Nitrogen rate [N]	0.0304	<0.0001	0.0002	<0.0001	<0.0001	0.0031	<0.0001
Nlinear	0.0244	<0.0001	0.0071	<0.0001	<0.0001	0.0034	<0.0001
Nquadratic	0.5075	0.2883	0.4028	0.6096	0.8625	0.8276	0.9326
Ncubic	0.6252	0.7336	0.9303	0.8310	0.9058	0.5875	0.7329
PC∗N	0.6344	<0.0001	0.9209	0.1205	0.3114	0.1215	0.3544