Can Soil Compaction Alter Morphophysiological Responses and Soybean Yield under Application of Selective Herbicides?

Table 3

ANOVA summary ( + CV) for plant height (PH), relative index of chlorophyll a (RICa) and b (RICb), carbon assimilation rate (A), transpiration rate (E), shoot dry mass (SDM), and root dry mass (RDM), as well as ratios of carbon assimilation rate to transpiration rate (A/E) and shoot dry mass to root dry mass (SDM/RDM), between the soybean as a function of soil physical condition and preemergence herbicide application.

Source of variation	DF
		PH	RICa	RICb	A	E	SDM	RDM	A/E	SDM/RDM
Soil physical condition (C)	1	1.23^ns	6.48	3.88	6.04	1.03^ns	0.13^ns	54.96	5.81	21.81
Herbicide (H)	7	0.60^ns	0.52^ns	0.75^ns	0.44^ns	0.31^ns	0.83^ns	1.86^ns	0.85^ns	1.39^ns
C versus H	7	0.91^ns	1.31^ns	2.69	0.44^ns	0.74^ns	1.18^ns	3.44	1.19^ns	0.63^ns
Mean	—	7.52	28.84	6.5	21.37	2.99	11.53	2.74	7.13	9.47
CV (%)	—	21.88	19.16	17.64	23.75	23.5	12.55	60.46	15.86	88.21

DF: degree of freedom. ^{ns and}Nonsignificant and significant by F-test (), respectively.