Table 5.
Economic analysis of paprika fruits during the supplemental lighting.
| Treatment z | Marketable Yield (kg/1000 m2) | Gross Income y (USD/1000 m2) | Incremental Cost (USD/1000 m2) | Net Income v (USD/1000 m2) | Net Income Rate u (%) | ||
|---|---|---|---|---|---|---|---|
| LED Installation x | Electricity Cost w | Total | |||||
| QD-IL | 8970 | 33,262 | 1769 | 657 | 2425 | 1370 | 4.65 |
| CW-IL | 9660 | 35,978 | 2015 | 753 | 2768 | 3743 | 12.70 |
| B+R-IL | 9120 | 33,857 | 2138 | 1330 | 3468 | 921 | 3.13 |
| CW-TL | 9480 | 34,915 | 3137 | 1137 | 4274 | 1173 | 3.98 |
| Cont | 7890 | 29,468 | - | - | - | - | 0.00 |
z See Table 1 for details on the treatment included. y Unit price of red or green paprika per kg × marketable yield per 1000 m2. x (LEDs cost + SMPS cost) × number of light sources per 1000 m2 ÷ life expectancy of LED ÷ 12 × experiment period. - Life expectancy of LED as 11.42 years, and experiment period as 3.3 months. w Electricity consumption of light sources × supplemental lighting time × agricultural electricity cost per kWh × number of light sources per 1000 m2. - Supplemental lighting time as 6.7 h, and agricultural electricity cost as 40 KRW per kWh. v Gross income—(total incremental cost + gross income of Control). u Net income ratio = ((gross income of control + net income)/(gross income of control) × 100) − 100.