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This site provides detailed research reports on crop growth stages. For each crop we organize the following information:
- Environmental requirements: temperature requirements, GDD (growing degree days)
- Nutrient requirements: NPK (nitrogen, phosphorus, potassium) uptake characteristics
- Pests & diseases: major pests and countermeasures
Target crops
Fruit vegetables
| Crop | 01 Env: Temp | 01 Env: GDD | 02 Nutrition: NPK | 03 Pests/Diseases |
|---|---|---|---|---|
| 🍅 Tomato | Temperature | GDD | NPK | Major pests |
| 🫑 Bell pepper | Temperature | GDD | NPK | Major pests |
| 🍆 Eggplant | Temperature | GDD | NPK | Major pests |
| 🥒 Cucumber | Temperature | GDD | NPK | — |
| 🎃 Pumpkin | Temperature | GDD | NPK | Major pests |
Root vegetables
| Crop | 01 Env: Temp | 01 Env: GDD | 02 Nutrition: NPK | 03 Pests/Diseases |
|---|---|---|---|---|
| 🥔 Potato | Temperature | GDD | NPK | Major pests |
| 🥕 Carrot | Temperature | GDD | NPK | Major pests |
| 🥬 Radish | Temperature | GDD | NPK | Major pests |
| 🧅 Onion | Temperature | GDD | NPK | Major pests |
Leafy vegetables
| Crop | 01 Env: Temp | 01 Env: GDD | 02 Nutrition: NPK | 03 Pests/Diseases |
|---|---|---|---|---|
| 🥬 Cabbage | Temperature | GDD | NPK | Major pests |
| 🥦 Broccoli | Temperature | GDD | NPK | Major pests |
| 🥬 Chinese cabbage | Temperature | GDD | NPK | Major pests |
| 🥬 Lettuce | Temperature | GDD | NPK | Major pests |
| 🥬 Spinach | Temperature | GDD | NPK | Major pests |
Grains
| Crop | 01 Env: Temp | 01 Env: GDD | 02 Nutrition: NPK | 03 Pests/Diseases |
|---|---|---|---|---|
| 🌽 Corn | Temperature | GDD | NPK | Major pests |
Report structure
Each crop report is organized into the following sections:
1. Environmental requirements
Temperature requirements
For each growth stage (germination, vegetative growth, flowering, fruiting), we summarize:
- optimal_min / optimal_max: optimal minimum and maximum temperatures
- base_temperature: base temperature (growth start threshold)
- low_stress_threshold: low-temperature stress threshold
- high_stress_threshold: high-temperature stress threshold
- max_temperature: maximum temperature
- frost_threshold: frost damage threshold
- sterility_risk_threshold: sterility risk threshold (flowering only)
GDD requirements
Guidelines for growth stage progression based on Growing Degree Days (GDD).
2. Nutrition requirements
NPK uptake profiles for each growth stage.
3. Pests & diseases
Major pests and practical countermeasures.
Data sources
All reports are based on the following sources:
- Official Japanese public institutions and academic literature
- International agronomy studies
- Agricultural technical manuals
- Official guides and manuals
Each report includes a detailed bibliography.
How to use
- Select the crop from the left navigation menu
- Refer to the sections (Environmental, Nutrition, Pests & Diseases)
- Check tables and charts for numerical details
- Refer to the bibliography for original sources
Notes
- Values are general guidelines and may vary by cultivar, region, and growing conditions
- Adjust management according to local weather and soil conditions
- Refer to original literature for the latest research
Changelog
Reports are continuously updated. Check each report’s last modified date for the latest information.
Comprehensive research reports for crop cultivation based on scientific evidence