Table 2.

Sunflower growth parameters measured in the reproductive stage.

		Number of leaves		Height of plant (cm)		Stem diameter (cm)		Head diameter (cm)		Head dry weight (g)
	n	Mean	SEM	Mean	SEM	Mean	SEM	Mean	SEM	Mean	SEM
Treatments1
CT	8	21.67 A	3.33	68.62 B	15.88	1.48 B	0.25	7.98 C	0.59	22.43 BC	3.65
DQ/P	8	22.94 A	3.33	85.74 A	15.88	1.57 AB	0.25	9.42 AB	0.59	29.23 A	3.65
DQ	8	23.29 A	3.33	88.07 A	15.88	1.67 A	0.25	9.45 AB	0.59	32.07 A	3.65
R/P	4	16.15 B	3.40	56.76 C	16.12	0.97 C	0.26	8.24 BC	0.72	18.01 C	4.61
R	3	17.40 B	3.43	70.38 B	16.25	1.20 C	0.27	9.92 A	0.77	28.81 AB	4.97
	df		p-value
Treatments	4	<0.0001		<0.0001		<0.0001		0.007		0.009

Treatments mean values (mean), standard errors of the mean (SEM), number of observations (n), as well as probability values (p-value), and degrees of freedom (df) associated with the ANOVA of number of leaves, height of plant, stem diameter, head diameter, and head dry weight. ¹Treatments: CT, control treatment; DQ/P, sunflower after winter CC chemical suppression with P fertilization at sowing; DQ, sunflower after winter CC chemical suppression without P at sowing; R/P, sunflower after winter CC rolling with P fertilization at sowing; R, sunflower after winter CC rolling without P at sowing. Treatments mean values followed by different capital letters indicate statistical differences (α = 0.05).