TABLE 3.

Colonization of bulk soil by P. putida CMC4 and EEZ32 in the spring-summer outdoor assay^a

Strain	Presence of 3-methylbenzoate	CFU/g of soil after:
		11 days	19 days	28 days	98 days
Control strain EEZ32	+	2 × 104	2 × 103	103	<102
	−	6 × 102	<102	<102	<102
Contained strain CMC4	+	5 × 103	<102	<102	<102
	−	2 × 102	<102	<102	<102

^aThe conditions were the conditions described in the legend to Fig. 5 except that bacteria were counted in the bulk soil at the times indicated. The values are the averages of values for duplicate samples counted in triplicate, and the standard deviations were on the order of 1 to 10% of the values given.