Productivity and Elemental/Chlorophyll Composition of Collard Greens in an Aquaponic System at Different Combinations of Media and Black Soldier Fly (Hermetia illucens) Larvae Frass Supplementations

Table 4

Production parameters of collard greens aquaponically grown with or without media and with or without black soldier fly (Hermetia illucens) frass after 10 weeks.

	No media/no frass	No media/frass	Media/no frass	Media/frass	SEM	Media	Frass	Interaction
Moisture (%)	87.95^a	89.61^b	90.64^b	90.75^b	0.31	0.001	0.047	0.073
Total weight (g)	217^c	1290^b	546^c	1995^a	167	0.032	0.001	0.373
Total count	43^a	68^a	52^a	71^a	9.41	0.544	0.048	0.785
Individual leaf weight (g)	4.89^c	19.91^b	9.58^c	28.11^a	1.51	0.001	0.005	0.333
Stem (cm)	9.72^b	11.63^b	17.66^a	18.39^a	1.19	0.001	0.329	0.652
Root (cm)	49.44^a	44.67^ab	21.00^b	34.88^ab	5.91	0.038	0.598	0.279
Height (cm)	15.56^b	18.22^b	24.44^a	27.56^a	1.10	0.001	0.035	0.849
Total count	130	204	156	214	n/a	n/a	n/a	n/a
Total weight (g)	653	3870	1638	5985	n/a	n/a	n/a	n/a

mean among three plants from three harvests. total from three plants from three harvests. n/a = sum of nine plants (3/replicate) in each treatment and thus no replicates to conduct statistical analysis. bold font indicates significant differences.