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Table 4 Average data collected under color temperature blue (CTB) photoselective filters

From: Layering contrasting photoselective filters improves the simulation of foliar shade

Filter

Brand

R:FRa

PPEb

B:Gc

PPF reductiond

UV-A PFe

     

%

µmol m−2 s−1

1/8 CTB

LEE

0.91 Af

0.69 A

0.94 I

20.7 G

58.5 A

e-colour + 

0.90 A

0.68 B

0.98 H

24.7 F

18.6 E

Cinegel

0.92 A

0.70 A

0.94 I

24.3 F

63.2 A

1/4 CTB

LEE

0.78 B

0.67 C

1.01 G

28.3 E

48.4 BC

e-colour + 

0.76 BC

0.66 D

1.06 F

30.0 E

17.9 E

Cinegel

0.71 C

0.67 C

1.05 F

35.0 D

59.7 A

1/2 CTB

LEE

0.57 D

0.63 E

1.21 E

44.0 C

38.2 D

e-colour + 

0.60 D

0.62 F

1.32 D

45.7 C

22.9 E

Cinegel

0.51 E

0.63 E

1.22 E

45.7 C

54.9 AB

Full CTB

LEE

0.41 F

0.57 G

1.66 B

56.3 B

22.9 E

e-colour + 

0.37 F

0.56 H

1.49 C

57.7 B

42.3 CD

Cinegel

0.19 G

0.51 I

1.71 A

67.7 A

43.0 CD

  1. aR:FR = 655–665/725–735
  2. bPPE = Phytochrome photoequilibria
  3. cB:G = 420–490/500–570
  4. dPPF reduction = Percent reduction in PPF relative to full sun
  5. eUV-A PF = Photon flux between 340 and 399 nm
  6. fData are presented as averages acquired on three different clear sky or mostly sunny days between 13:00 and 14:00 h: 27 May, 30 May, and 12 June 2020. Means are only compared within column and were separated with Fisher’s LSD. Means followed by a common letter are not significantly different (P = 0.05). Data collected under full sun were on average; R:FR = 1.15, PPE = 0.72, B:G = 0.87, PPF = 1719 µmol m−2 s−1, UV-A PF = 86 µmol m−2 s−1