12/24/2025
Potato Quality Is Built in the Soil: Some Silent Risks Growers Can No Longer Ignore
Across both India and North America, potato production is shaped by quiet risks that strongly affect tuber quality, storability, and market value. Common scab, frost injury, drought and heat- and moisture-related tuber cracking are just a few of them — and all are driven more by soil and water management than by sprays alone.
Common scab reduces marketability by damaging skin and peel quality. It is strongly influenced by soil pH, organic matter, nitrogen balance, irrigation timing, rotation, and cultivar choice. Sandy soils are especially prone because they dry quickly during early tuber development. Harvesting early may reduce scab but often lowers yield, skin set, and storability. Choosing less scab-susceptible cultivars is one of the most sustainable tools available.
Frost injury is increasing across potato belts in North America and northern India. Frost-damaged crops lose canopy, bulking, and skin quality. Sandy soils are more frost-prone. For an example in New Brunswick, Manitoba, and other provinces planting early-maturing varieties allows earlier harvest and significantly reduces frost risk.
In warmer regions such as Gujarat, high daytime temperatures drive heavy irrigation. Poor soil structure leads to ponding, fluctuating moisture, and tuber cracking, causing major quality and storage losses.
Rather than treating each issue separately, building soil health is the most resilient solution. Regenerative practices improve structure, porosity, water-holding capacity, and reduce compaction — buffering frost, minimizing cracking, and improving skin finish and storability.
Potato quality is not fixed in storage — it is built in the soil.
