Table 4. Microorganismsof two leafy vegetables according to cultivation type

			Batavia
			Hydroponically grown		Soil-grown
			BAH1	BAH2	BAH3	BAN
			Mean SD	Mean SD	Mean SD	Mean SD
Total aerobic	Outer leaves	(log CFU/g)	4.54^c±0.61	6.20^b±0.28	5.16^c±0.58	6.97^a±0.49
Bacteria	Innter leaves	(log CFU/g)	3.41^c±0.64	5.68^b±0.33	5.18^b±0.38	6.49^a±0.39
Coliforms	Outer leaves	(log CFU/g)	3.42^a±0.70	1.83^bc±0.21	2.91^ab±0.99	0.98^c±1.35
Coliforms	Innter leaves	(log CFU/g)	1.00^c±1.18	1.83^bc±0.11	3.00^ab±0.65	2.75^a±0.55

			Butterhead
			Hydroponically grown		Soil-grown
			BUH1	BUH2	BUH3	BUN
			Mean SD	Mean SD	Mean SD	Mean SD
Total aerobic	Outer leaves	(log CFU/g)	4.03^b±1.22	6.20^a±0.29	5.93^a±0.38	5.46^a±0.67
Bacteria	Innter leaves	(log CFU/g)	2.47^b±0.57	5.86^a±0.45	5.71^a±0.31	3.37^b±1.68
Coliforms	Outer leaves	(log CFU/g)	1.74^b±1.69	1.59^b±0.19	3.48^a±0.30	0.51^b±1.14
Coliforms	Innter leaves	(log CFU/g)	ND^b	0.80^b±0.76	3.71^a±1.06	0.79^b±1.12

Average of measurements (n=3)±standard deviation
Mean values with the same letter in a row are not significantly different at p<0.05.
Hydroponically grown batavia: BAH1 (farm A), BAH2 (farm B), BAH3 (farm C); butterhead: BUH1 (farm A), BUH2 (farm B), BUH3 (farm C)
Soil-grown batavia: BAN (farm D); butterhead: BUN (farm D).