TABLE 2.

Soil bacterial densities determined with media supplemented or not supplemented with tellurite

Bacteria	Medium	Density (log CFU · g [dry wt] of soil−1) ina:
		June	August
Total cultivable bacteria	TSA	6.89 ± 0.07	6.99 ± 0.04
	TSA + K2TeO3	6.21 ± 0.04	6.43 ± 0.06
	1A	5.89 ± 0.23	5.76 ± 0.11
	1A + K2TeO3	5.00 ± 0.15	4.79 ± 0.03
	2E	4.63 ± 0.07	5.47 ± 0.05
	2E + K2TeO3	3.00 ± 0.11	4.42 ± 0.04
Agrobacterium like colonies	1A	2.90 ± 0.31	4.23 ± 0.11
	1A + K2TeO3	2.85 ± 0.42	3.80 ± 0.16
	2E	<2.3b	<2.3
	2E + K2TeO3	<2.3	<2.3
Bona fide Agrobacterium	1A	2.81 ± 0.31 (0.08)c	4.10 ± 0.11 (2.2)
	1A + K2TeO3	2.85 ± 0.42 (0.7)	3.80 ± 0.16 (10)

^aValues are means ± standard errors of the means based on three independent counts. 

^bNo Agrobacterium-like colonies were recovered at the threshold indicated. 

^cBona fide Agrobacterium values were determined after colony blot hybridization of Agrobacterium-like colonies with chromosomal probes specific for Agrobacterium biovar 1 (see text). The values in parentheses are the percentages of bona fide Agrobacterium colonies among all of the colonies growing on the same medium.