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Table 6 Mineral contents in harvested leaves

From: Efficiency and effectiveness of vitamin C-substrate organo-mineral straight fertilizer in lettuce (Lactuca sativa L.)

Minerals

Control (water only)

r-Ringer (1/2000)

AGH-Ringer (1/2000)

AGH-Ringer (1/1000)

AGH-Ringer (1/500)

Ca

7143 ± 13c

7045 ± 21d

7706 ± 5b

7032 ± 23d

7845 ± 9.46a

Zn

37 ± 0.11e

41 ± 0.12d

51 ± 0.16a

44 ± 0.31c

45 ± 0.31b

Fe

255 ± 2.17c

335 ± 1.21a

172 ± 0.33e

196 ± 0.85d

304 ± 1.48b

Cu

0.31 ± 0.02b

0 ± 0c

1.13 ± 0.06a

0 ± 0c

0.25 ± 0.05b

Se

0 ± 0a

0 ± 0a

0 ± 0a

0 ± 0a

0 ± 0a

K

40,953 ± 146c

35,549 ± 58d

43,048 ± 148b

45,822 ± 127a

45,811 ± 225a

Mg

2095 ± 7.06d

2034 ± 5.93e

2228 ± 6.99c

2291 ± 24.2b

2356 ± 2.69a

Mn

13 ± 0.02d

13 ± 0.03d

17 ± 0.05c

18 ± 0.07b

27 ± 0.19a

B

20 ± 0.12c

19 ± 0.06d

25 ± 0.17b

31 ± 0.22a

20 ± 0.03c

Mo

0 ± 0a

0 ± 0a

0 ± 0a

0 ± 0a

0 ± 0a

Na

2039 ± 12d

1439 ± 3e

2230 ± 0.32c

2494 ± 4d

2308 ± 9.0a

Co

0 ± 0a

0 ± 0a

0 ± 0a

0 ± 0a

0 ± 0a

P

6465 ± 28b

4632 ± 12e

6364 ± 11c

5306 ± 17d

6807 ± 49a

S

1873 ± 10c

2051 ± 14b

2076 ± 11b

1548 ± 15d

2119 ± 20a

Cr

39.6 ± 0.15e

44.9 ± 0.2d

53.8 ± 0.14a

46.6 ± 0.29c

48.7 ± 0.55b

Sum

60,933 ± 219

53,203 ± 115

63,972 ± 183

64,829 ± 213

67,691 ± 318

  1. All data are expressed as mean ± standard deviation (n = 3). Different letters show a significant difference at p < 0.05 as determined by Duncan’s multiple range tests