Table 2. Key nutrient demands for high-value tuber (Yujin) development.
| Growth stage | Macronutrients | Secondary nutrients | Micronutrients |
|---|---|---|---|
| Tubers expansion | K, P | Mg | Cu, Fe |
| Dry matter accumulation | K | Mg | Cu |
| Maturation | K | Mg | Cu |
| Growth stage | Macronutrients | Secondary nutrients | Micronutrients |
|---|---|---|---|
| Tubers expansion | K, P | Mg | Cu, Fe |
| Dry matter accumulation | K | Mg | Cu |
| Maturation | K | Mg | Cu |