Table 5. Effect of harvesting time on root growth and yield of Salvia miltiorrhiza Bunge

Harvesting time	Root length (cm)	Root diameter (mm)	Lateral root (Number/plant)	Dry weight (g/plant)
November 10	35.53^a1)	38.00^a	18.33^a	32.73^a
November 20	33.90^a	37.83^a	18.00^a	32.97^a
November 30	35.43^a	36.73^a	18.36^a	33.57^a
March 10	35.30^a	36.97^a	18.24^a	34.01^a
March 20	36.07^a	36.77^a	18.42^a	34.13^a

Values represent the mean (n=3). Means with different letters are significantly different at p<0.05 probability level by Duncan’s multiple range test.