Table 2 Photons and electric power consumption for producing per unit weight of lettuce harvested at 49 DAS. p: photons consumed for producing per gram of lettuce in a unit of planting area; k:electric energy consumed for producing per gram of lettuce in a unit of planting area.

From: Red and blue wavelengths affect the morphology, energy use efficiency and nutritional content of lettuce (Lactuca sativa L.)

Treatment

p(mol·g−1)

K(MJ·g−1)

Dry weight

Fresh weight

Dry weight

Fresh weight

100%R

4.11

0.14

2.44

0.09

90%R

2.92

0.09

1.67

0.05

80%R

4.24

0.12

2.38

0.07

70%R

4.37

0.14

2.40

0.08

60%R

5.09

0.18

2.74

0.09

50%R

5.60

0.17

2.94

0.09

40%R

5.23

0.16

2.69

0.08

30%R

6.49

0.20

3.26

0.10

20%R

8.01

0.28

3.93

0.14

10%R

8.57

0.28

4.10

0.14

0%R

6.39

0.25

3.02

0.12

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