Current UCUI
68/100
Moderate-High Uncertainty
+4 points from prior reading
Potato Market Intelligence
Potato Tuber Size Forecast
A potato tuber size forecast estimates the distribution of production across commercially relevant size bands rather than one average diameter. Procurement teams can translate field digs, crop stage, weather, irrigation, and variety into fresh packout, fry-length, peeling, or seed supply by specification.
Market Data
How to read this market
A potato tuber-size forecast estimates the distribution of potatoes across defined size bands before harvest is complete. The market object is the expected size mix by variety, region, field program, and delivery window, informed by field digs, crop stage, weather, irrigation, and historical bulking.
Use the data to forecast fresh packout, fry-length potential, peeling yield, and contract-ready supply for size-sensitive programs. Keep size distribution separate from total yield because normal tonnage can coexist with scarcity in a particular commercial band.
Data Module
Potato Tuber Size Forecast
Market objectexpected tuber size distribution
Primary measureshare by size band
Key dimensionsvariety, region, harvest period
Commercial usepackout and processing planning
End-use linksfresh, fries, seed
Compare withtotal yield and contract specs
Analysis
Why this matters
Average tuber size can conceal a commercially poor distribution. A crop with many small and very large potatoes may have the same mean as one concentrated in the buyer's preferred band.
Commercial interpretation should focus on the quantity inside each specification, not the average. This is especially important for baking potatoes and long-cut fry programs where a narrow size class drives value.
Signal 01
Usable Crop Uncertainty Index
UCUI translates crop and market complexity into a simple uncertainty signal. Higher readings indicate greater uncertainty—not necessarily higher prices.
Understand uncertainty. Anticipate risk. Act earlier.
UCUI is designed to analyze potato-industry publications and data signals across regions, varieties, weather, disease, storage, supply, and demand.
WeatherHigh
DiseaseHigh
StorageMedium
SupplyMedium
Single-day snapshot based on a scan of 11,500+ web and social signals. Get historical and real-time data by clicking the button below.
The MassGain Daily
Today’s market analysis.
A daily editorial synthesis of physical potato data, crop signals, market reporting, and what participants should watch next.
September 16, 2026Latest MassGain publication
Potato market steady for now; Russia’s smaller crop is the salient risk
Spot prices are flat and USDA terminal reports read ‘market steady,’ but a renewed forecast for a smaller Russian harvest and recent regional harvest stress leave seasonal import timing and storage losses as the key uncertainty.
Signal 02
MassGain Potato Index
Independent physical-pricing intelligence and market-trend analysis for procurement, forecasting, contracting, and scenario planning.
Core Russet Carton Median
312.45 USD/MT
Latest qualifying physical-market observation
+4.75 (+1.55%)
Price discovery for the physical potato market
MPI is designed to track physical pricing data, price trends, deltas, and divergences across regions and potato types.
Series window45 days
Current public coverageCore russet cartons
Primary source basisQualifying USDA physical rows
UnitUSD per metric tonne
Single-day snapshot based on most recent 45 days worth of data. Limited to US Russets only. Get more complete, global data about all varieties by clicking the button below.
Signal 03
MassGain Spot Reference
An independent spot reference designed for price discovery, contract discussions, procurement comparisons, and risk modeling.
Russet Burbank — U.S. Midsize
305 USD/MT
Demonstration reference format
+1.6% WoW · Confidence: High
A trusted benchmark for pricing, contracts, and risk
MSR is intended to use real transactions and verifiable physical-market data to support negotiations, price checks, contracting, and risk models.
ProductRusset Burbank
SpecificationU.S. midsize, 40–70 count
Reference typePhysical spot benchmark
StatusIn development
Based on most recent 45 days worth of data. Limited to US Russets only. Get more complete, global data about all varities by clicking the button below. Full access also includes historical data -- including depreciated NYMEX/CBOE/EEX spot references -- projections, trends, and AI-driven insights.
The MassGain Product Ladder
From insight to intelligence to action
Four integrated products built for the physical potato market, delivered through public pages, reports, exports, dashboards, and API access.
1
Content
Original research, commentary, aggregated news, and market updates.
- What matters right now?
- What is happening out there?
2
UCUI™
Usable Crop Uncertainty Index: an AI-powered signal of crop risk and market uncertainty.
- Understand uncertainty
- Anticipate risk
- Act earlier
3
MPI™
MassGain Potato Index: independent physical-pricing intelligence and trend analysis.
- Price discovery
- Regional trends
- Procurement planning
4
MSR™
MassGain Spot Reference: an independent benchmark for price discovery and risk modeling.
- Contracts
- Negotiations
- Risk models
Content + UCUI + MPI + MSR + API access
Get historical series, regional detail, constituent data, exports, alerts, and direct data access.
Overview
Who is this for?
This page is for procurement analysts, processors, grower organizations, and market planners that need a forward view of potato tuber size distribution before harvest is complete. Tuber size affects fresh-market packout, fry length, peeling yield, seed requirements, and the amount of crop that can satisfy a particular contract. MassGain combines field sampling, variety, planting date, weather, irrigation, canopy development, historical bulking patterns, and early harvest observations to estimate likely size bands by region and delivery period.
The value is not a single average diameter. A crop can produce normal total tonnage while falling short of large baking potatoes, long processing tubers, or small retail packs. MassGain separates total yield from specification-ready volume and connects each size scenario with regional benchmarks, contract coverage, processor demand, storage plans, and alternate origins. Procurement teams can protect scarce size classes, processors can adjust product mix and intake timing, and finance can estimate the premium or recovery impact associated with a skewed distribution. The forecast is updated as field digs and intake data improve, preserving the assumptions behind each revision. MassGain does not replace agronomic sampling or official grading; it provides a commercial planning layer that shows how size outcomes may affect usable supply, price, and contract performance.
Use Case
A frozen-fries processor receives field reports showing normal plant populations but slower tuber bulking in one sourcing basin. MassGain forecasts adequate total tonnes but a shortage of long, large tubers needed for premium cuts. Procurement reserves suitable volume from a secondary region, while operations shifts shorter potatoes toward products with more flexible length specifications.
FAQs
What does a potato tuber size forecast estimate?
It estimates the expected distribution of potatoes across defined size bands by region, variety, and harvest period.
Why can size matter even when total yield is normal?
Buyers and processors require specific dimensions, so normal tonnage can still leave one commercial size class scarce.
How does MassGain refine the forecast?
It updates scenarios using field digs, weather, crop stage, variety, historical bulking, and early intake results.
Put this market intelligence to work
Get historical data, regional detail, benchmarks, alerts, exports, and API access tailored to your procurement
and market-analysis needs.
Data and Methodology
Professional market-data standards
MassGain is building transparent public market infrastructure. Each live metric will identify its date, unit, coverage, methodology, and source basis.
Data provenance
MassGain uses public, licensed, contributed, and independently derived physical-market information. Source availability and publication schedules vary.
Timing and revisions
Figures may reflect the latest available observation rather than a same-day transaction. Source data and MassGain calculations may be corrected, restated, or revised.
Not transactional pricing
MassGain figures are informational reference values and do not constitute executable bids, offers, settlements, or guarantees that a transaction can occur at the displayed value.
No individualized advice
Content and data are provided for informational and analytical purposes and do not constitute financial, investment, legal, trading, or individualized procurement advice.
Independent publication
Certain observations may be derived from USDA reports. MassGain is independent and is not affiliated with or endorsed by the USDA.
Commercial use and licensing
Public display does not grant rights to reproduce, redistribute, republish, or incorporate MassGain indices or references into commercial products or contracts without authorization.