Table 3 Influence of system components on the four impact categories with the highest environmental impact, when YP was 7 kg kg−1.

From: Spatial heterogeneity in the properties of hydroponic wheat fodder and its sustainability

Impact category

Unit

Total

Wheat seeds

Electricity

Tap water

Other

MAE

kg 1.4-DBeq

41,665.5

690.4

(1.7%)

36,556.8

(87.7%)

2665.3

(6.4%)

1753.1

(4.2%)

AD (fossil fuels)

MJ

1025.5

350.3

(34.2%)

601.4

(58.6%)

17.8

(1.7%)

56.0

(5.5%)

GWP

kg CO2eq

100.7

50.8

(50.4%)

44.6

(44.3%)

1.6

(1.6%)

3.8

(3.8%)

FAE

kg 1.4-DBeq

26.23

9.8

(37.4%)

13.2

(50.2%)

1.2

(4.4%)

2.1

(8.0%)

  1. MAE marine aquatic ecotoxicity, AD (fossil fuels) fossil fuel abiotic resource depletion, GWP global warming potential, FAE freshwater aquatic ecotoxicity.
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