Table 1 Data used as input for long short-term memory (LSTM) and their ranges
Input data (unit) | Range |
|---|---|
Electrical conductivity (EC) of the substrate (dS m−1) | 1.6–4.8 |
Moisture content of the substrate (%) | 29.1–100.0 |
EC of nutrient solutions in the drainage tank (dS m−1) | 0.0–6.0 |
Volume of nutrient solutions in the drainage tank (L) | 0.0–11.3 |
Cumulative drainage volume per day (L) | 0.0–182.2 |
Volume of nutrient solutions in the mixing tank (L) | 1.7–14.1 |
Mixing volume of drainage (L) | 0.0–4.9 |
Mixing volume of water (L) | 0.0–7.5 |
Mixing volume of stock solution (L) | 0.0–0.17 |
Cumulative irrigation volume per day (L) | 0.0–196.0 |
Preset radiation integral for irrigation control (J cm−2) | 0.0–150.0 |
Target volume of irrigation per dripper (mL) | 160.0–220.0 |
Root-zone temperature (°C) | 10.5–44.9 |
Root-zone pH | 2.7–4.6 |
Light intensity (W m−2) | 0.0–492.7 |
Greenhouse temperature (°C) | 10.7–44.3 |
Greenhouse relative humidity (%) | 8.6–83.9 |
SPAD | 40.9–74.7 |
Plant height (cm) | 115.0–217.0 |
Plant diameter (mm) | 13.0–16.8 |
Number of nodes | 16–40 |