Fate in Soil of Flavonoids Released from White Clover (Trifolium repens L.)

Table 6

The maximum available concentration in soil B after incorporation of white clover plant material and at 𝑡=16 days after incorporation, and the concentration of available flavonoids in soil A (nmol/kg dry weight). Values represent the mean of two replicate analyses.

Compound	Soil B (used for incorporation)		Soil A; (used for cultivation)
	Max conc.; (at time (days))	Conc. at; 𝑡=16 days
Kaempferol	1355 (𝑡=5)	1297	520
Astragalin	ND	ND	ND
Kaempferol-Rha-Xyl-Gal	3417 (𝑡=1)	50	51
Quercetin	ND	ND	ND
Hyperoside	72 (𝑡=0)	12	ND
Quercetin-Xyl-Gal	492 (𝑡=0)	27	16
Rutin	41 (𝑡=0)	ND	ND
Quercetin-Rha-Xyl-Gal	85 (𝑡=0)	ND	ND
Apigenin	ND	ND	ND
Saponarin	ND	ND	ND
Luteolin	ND	ND	ND
Luteolin-Glc	5.2 (𝑡=0)	ND	ND
Luteolin-di-Glc	5.4 (𝑡=3)	4.4	ND
Naringenin	17 (𝑡=2)	1.8	1.9
Daidzein	121 (𝑡=5)	13	24
Daidzin	11 (𝑡=0)	0.5	5.4
Formononetin	10234 (𝑡=2)	1009	9114
Genistein	115 (𝑡=2)	18	3.7
Genistin	21 (𝑡=0)	0.3	3.8
Biochanin A	13 (𝑡=2)	5.4	3.8
Sissotrin	2.8 (𝑡=0)	ND	2.3
Medicarpin	3940 (𝑡=2)	277	832
Coumestrol	39 (𝑡=2)	6.8	22