Field Survey & Data Collection Flashcards
7 cards from real GAP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Field Survey & Data Collection flashcards as text
Under GAP standards, which type of field map is considered the MINIMUM documentation for a produce operation seeking third-party certification?
Answer: A labeled field map showing production areas, water sources, and adjacent land uses
GAP certification requires a field map that identifies production areas, irrigation water sources, and adjacent land uses to enable a complete risk assessment.
When using a Brix refractometer during a field maturity survey, what does a higher Brix reading indicate?
Answer: Greater sugar concentration in the fruit or vegetable
Brix measures dissolved sugars in plant sap or juice; a higher reading indicates greater sugar concentration and is used as a maturity and quality indicator.
During a GAP field audit, the inspector asks to see the 'chain of custody' documentation for a water sample. What does this document verify?
Answer: Sample integrity from collection through laboratory analysis
Chain of custody documentation tracks sample handling, custody transfers, and storage conditions from field collection to the laboratory, verifying that results are defensible.
A GAP field survey reveals that the farm's overhead irrigation system creates spray drift that reaches a roadside drainage ditch. Which risk does this PRIMARILY represent?
Answer: Potential contamination backflow from the ditch into the irrigation system
If irrigation spray contacts a drainage ditch, contaminated ditch water could potentially enter the irrigation system through back-siphoning, creating a cross-contamination pathway.
In a field survey data log, the notation 'STS' is used to indicate what type of observation?
Answer: Signs of standing water or surface saturation
In common GAP field survey shorthand, STS denotes signs of standing water or surface saturation, flagging areas of potential contamination risk.
Which statistical concept is MOST relevant when a grower wants to know if water test results from the past 4 years reflect an improving or worsening trend?
Answer: Linear regression analysis across multiple sampling dates
Linear regression applied across time-series data points identifies whether the trend in water quality is improving, declining, or stable over the multi-year period.
When documenting field survey findings for traceability purposes, why is it important to record the LOT number of any input (fertilizer, pesticide) observed being applied?
Answer: To enable traceback if a contamination event occurs and link it to a specific input batch
LOT numbers enable precise traceback, linking a contamination event to a specific manufactured batch of an input, which is essential for both recalls and corrective action.