Table 1.

Effect of post-emergence herbicides on seedling survival, shoot biomass, and control of Bidens pilosa when applied at the four- and six-leaf developmental stages.

Herbicide	Rate (g ha−1)	Four-leaf stage			Six-leaf stage
		Survival (%)	Biomass (g/plant)	Control (%)	Survival (%)	Biomass (g/plant)	Control (%)
Control	0	0	0.155	0	100	0.244	0
2,4-D	1050	17	0.031	80	64	0.116	52
2,4-D + picloram	375	15	0.016	90	58	0.143	41
Fluroxypyr	100	97	0.070	55	100	0.160	34
Glufosinate	750	3	0.002	99	18	0.050	80
Glyphosate	675	48	0.011	93	100	0.104	57
Paraquat	500	00	0.000	100	38	0.155	36
Saflufenacil*	12	100	0.057	63	100	0.122	50
LSD		19.5	0.030		16.8	0.100

^*Hasten at 1% was added to saflufenacil.