If organic matter deficiency, high pH, or nutrient fixation is detected as a result of soil analysis;
Before fertilizer application, apply 2–4 liters per decare of DERMAN-S by spraying.
Before fertilizer application, apply 2–4 liters per decare of HUMDEX by spraying.
Fertilizers whose types and quantities are determined by soil analysis should be applied in February and incorporated into the soil.
After seedling planting
1–2 liters Master Effect per 100 liters of water
250 cc Zenova per 100 liters of water
15–20 days after the first application
1 liter Master Effect per 100 liters of water
250 cc Combi per 100 liters of water
250 cc Verafert per 100 liters of water
15–20 days after the previous application
(Repeat every 15–20 days until tuber initiation)
1 liter Master Effect per 100 liters of water
At the beginning of tuber formation
1 liter Master Effect per 100 liters of water
250 cc Master K per 100 liters of water