Table 3. Effect of different herbicides on growth characteristics of plants in corn-soybean mixed cropping forage (Mean)

Growth parameters	Treatments					SEM	p-value
	No herbicide	Pendimethalin	Linuron	S-metolachlor	Ethalfluralin
Corn stalk height (cm)	299	312	300	297	306	10.6	0.940
Corn ear height (cm)	139	139	141	138	138	5.5	0.998
Soybean height (cm)	102	107	102	124	112	13.2	0.872
Corn-bean coupling (No./7.5 m2)	13b	36a	31a	35a	39a	3.6	0.018

Variables having different superscripts in the same rows are significantly different (p < 0.05).
SEM, standard error of the mean.