The Response of Durum Wheat to the Preceding Crop in a Mediterranean Environment

Table 3

Grain yield, vegetative growth, and kernel number per spike. Year × preceding crop interaction.

Treatments	Preceding crop	Grain yield	Vegetative growth	Kernels per spike
Year		(g m^−2)	(g m^−2)	( spike^−1)
2007-2008	Alfalfa	573.2^a	631.7^a	34.6^a
	Maize	462.2^b	550.9^abc	28.9^bc
	Sunflower	497.3^b	585.0^ab	29.6^b
	Wheat	300.7^c	431.4^cd	23.4^d
2008-2009	Alfalfa	281.1^c	364.8^d	25.0^cd
	Maize	326.2^c	472.3^bcd	24.5^d
	Sunflower	294.3^c	397.3^d	24.8^d
	Wheat	276.4^c	401.7^cd	26.9^bcd

Within columns, numbers followed by the same letter are not significantly different at ≤ 0.05.