Current UCUI
68/100
Moderate-High Uncertainty
+4 points from prior reading
Potato Market Intelligence
Potato Rhizoctonia Defect Tolerance
Potato rhizoctonia defect tolerance defines acceptable black scurf and related surface defects under the relevant market specification. MassGain connects severity with fresh packout, peeling, processing suitability, seed or program restrictions, customer standards, and replacement supply.
Market Data
How to read this market
Potato rhizoctonia-defect-tolerance data defines acceptable black scurf and related visible defect severity for a specified lot and market. The market object is the affected potato supply linked to variety, field, region, supplier, surface coverage, sample method, and fresh, processing, or seed use.
Use the data to estimate fresh packout, peeling and sorting burden, processing suitability, and customer eligibility while keeping seed or phytosanitary requirements distinct. Compare qualified supply and alternate channels before assigning a blanket value loss.
Data Module
Potato Rhizoctonia Defect Tolerance
Market objectrhizoctonia-affected potato lot
Primary measuressurface coverage and severity
Key dimensionsfield, variety, supplier, end use
Commercial useacceptance and outlet valuation
Market contextfresh, processing, seed channels
Compare withpackout, peel outcome, replacement supply
Analysis
Why this matters
Rhizoctonia-related scurf can be largely cosmetic for some processing uses while materially reducing premium fresh or seed eligibility. The same physical lot can therefore have sharply different channel value.
Commercial interpretation should separate visual tolerance from biological or program requirements. A stricter specification is commercially meaningful only where it protects a market that values the difference.
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 and market-intelligence teams setting potato rhizoctonia defect tolerance. MassGain structures evidence for black scurf, stem-end effects, surface coverage, and related lot findings by variety, region, field, supplier, severity, sample size, and intended use.
It connects visible defects with fresh-market appearance, peeling, sorting, processing recovery, seed concerns, customer standards, and contract deductions. Buyers can distinguish low-severity cosmetic scurf from conditions that materially affect packout or use, while suppliers can target alternate outlets and corrective action. Procurement can compare regional incidence and determine whether a strict tolerance is reducing qualified supply beyond the value it creates.
The suite preserves inspection language and grading basis because severity classifications differ. MassGain does not diagnose the pathogen or determine seed and phytosanitary compliance. It provides a transparent commercial framework for relating rhizoctonia-related defects to usable volume, price, and supplier performance.
Use Case
A packer receives potatoes with elevated black scurf. MassGain compares surface coverage, wash and peel outcomes, customer standards, and regional replacement cost. Mildly affected lots move to a peeled foodservice program, while severe lots are settled separately.
FAQs
What does rhizoctonia tolerance cover?
It defines the permitted incidence or severity of black scurf and related visible defects.
Why does end use change the impact?
Fresh presentation, peeling, processing, and seed markets have different tolerance and value.
How does MassGain support a fair adjustment?
It connects measured severity with packout, processing performance, customer fit, and replacement cost.
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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.