Fig. 6.
Relationship of glyphosate application rate and microbial biomass K in three soils after six month incubation with six glyphosate applications. The soils were: (a) Blount0, a soil with no reported application of glyphosate, (b) Blount1, a soil with a history of moderate glyphosate application, and (c) Bennington2, a soil with a history of heavy glyphosate application. Vertical bars represent ±SD (n = 3).