Table 6 Input and output energy for producing 1 m2 of lettuce in System-I and System-II.
Input | Quantity per m2 | Energy (MJ/m2) | ||
|---|---|---|---|---|
System-I | System-II | System-I | System-II | |
Labor | 0.2 | 0.2 | 0.392 | 0.392 |
Electricity for the treatment pump unit | 0.037 | 0.037 | 0.44 | 0.44 |
Nitrogen | 0.014 | 0.014 | 0.91 | 0.91 |
Phosphorous | 0.012 | 0.012 | 0.14 | 0.14 |
Potassium | 0.046 | 0.046 | 0.50 | 0.50 |
Seeds | 0.0002 | 0.0002 | 0.003 | 0.003 |
Electricity/ PV for NFT pump | 6.917 | 0 | 99.6 | 0 |
Stationary equipment | 7.5 | 7.5 | 67.5 | 67.5 |
Output | – | – | ||
Lettuce (kg) | 11.38 | 11.38 | 7.9 | 7.9 |
