Figure 4
Control percentage of Ipomoea grandifolia (a) and Urochloa decumbens (b) plants cultivated in soils with 14 and 180 mg Pi dm−3 and submitted to doses of 0, 1080 and 1800 g ha−1 of glyphosate at 28 days after application (DAA). Means followed by the same lower-case do not differ between the soil P contents, and means followed by the same upper-case do not differ between the doses of glyphosate by the Tukey test at 5% probability. Plots were drawn using SigmaPlot ver. 10.0 (Systat Software, Inc., San Jose, USA, www.systatsoftware.com).
