The Scientific World Journal

Research Article

Fertilization and Colors of Plastic Mulch Affect Biomass and Essential Oil of Sweet-Scented Geranium

Table 3

The effects of different colors of plastic mulch and fertilizers on contents of citronellol, geraniol, citronellyl formate, linalool, 6,9-guaiadien, geranyl formate, geranial, and isomenthone in sweet-scented geranium essential oil.


Fertilizer	Colors of plastic mulch
Fertilizer	Control	White	Black	Silver-colored

	Citronellol (%) (RRI = 1223)
Control	24.68^bB	28.18^aA	26.95^aB	30.42^aA
Cattle manure	29.44^aA	29.46^aA	31.22^aA	28.72^aA
NPK 3-12-6	25.14^bB	30.56^aA	28.73^aA	29.00^aA
Cattle manure + NPK 3-12-6	23.68^bB	29.44^aA	29.61^aA	30.64^aA

	Geraniol (%) (RRI = 1249)
Control	20.85^aA	17.99^aA	19.88^aA	19.04^aA
Cattle manure	18.99^aA	19.39^aA	20.63^aA	20.28^aA
NPK 3-12-6	21.86^aA	17.80^aB	18.21^aB	16.66^aB
Cattle manure + NPK 3-12-6	24.72^aA	18.99^aB	18.99^aB	18.49^aB

	Citronellyl formate (%) (RRI = 1271)
Control	11.16^aA	10.97^aA	11.40^aA	12.00^bA
Cattle manure	11.69^aA	11.67^aA	12.15^aA	10.69^bA
NPK 3-12-6	11.11^aA	11.87^aA	12.16^aA	14.28^aA
Cattle manure + NPK 3-12-6	9.54^aA	11.69^aA	12.52^aA	14.61^aA

	Linalool (%) (RRI = 1095)
Control	12.36^aA	11.80^aA	10.00^aA	10.89^aA
Cattle manure	10.31^aA	11.42^aA	10.06^aA	8.99^aA
NPK 3-12-6	9.95^aA	13.08^aA	13.55^aA	12.82^aA
Cattle manure + NPK 3-12-6	11.63^aA	10.31^aA	12.66^aA	9.90^aA

	6,9-guaiadien (%) (RRI = 1442)
Control	6.19^aA	5.95^aA	5.74^aA	4.39^bB
Cattle manure	6.02^aA	4.93^aA	4.84^aA	4.56^bA
NPK 3-12-6	5.93^aA	5.46^aA	5.68^aA	6.10^aA
Cattle manure + NPK 3-12-6	5.07^aA	6.02^aA	5.04^aA	5.87^aA

	Geranyl formate (%) (RRI = 1298)
Control	3.50^aA	3.48^aA	4.10^aA	4.12^aA
Cattle manure	3.63^aA	3.73^aA	3.55^aA	3.79^aA
NPK 3-12-6	3.25^aA	3.12^aA	3.91^aA	4.62^aA
Cattle manure + NPK 3-12-6	3.39^aA	3.63^aA	3.29^aA	5.64^aA

	Geranial (%) (RRI = 1264)
Control	1.12^aA	1.29^aA	1.33^aA	1.12^aA
Cattle manure	1.18^aA	0.79^aA	0.00^bB	1.26^aA
NPK 3-12-6	1.18^aA	1.13^aA	1.20^aA	1.08^aA
Cattle manure + NPK 3-12-6	1.12^aA	1.19^aA	1.16^aA	0.30^bB

	Isomenthone (%) (RRI = 1158)
Control	1.23^aA	1.40^aA	1.24^aA	1.37^aA
Cattle manure	1.18^aA	1.18^aA	0.93^bA	1.24^aA
NPK 3-12-6	0.99^aB	1.40^aA	1.31^aA	1.31^aA
Cattle manure + NPK 3-12-6	1.18^aA	1.18^aA	1.25^aA	1.32^aA

RRI: relative retention index.
Lowercase letters indicate differences within columns, and uppercase letters indicate differences within rows. Values followed by the same letter are not statistically different based on the Scott-Knott test ().