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
Which soil sampling strategy provides the MOST representative composite sample for a 40-acre field with variable soil texture?
Answer: Grid sampling with cores taken every 2.5 acres
Grid sampling distributes core locations systematically across the field, capturing spatial variability in soil texture that random or single-point sampling would miss.
When a field scout records pest pressure data using a standardized scouting form, what does the term 'economic threshold' help determine?
Answer: Whether pest populations are high enough to justify intervention
The economic threshold is the pest population level at which the cost of intervention is justified by the yield loss it prevents, guiding treatment decisions.
In GAP field survey documentation, what does a 'buffer zone assessment' primarily evaluate?
Answer: Potential contamination sources adjacent to the production area
A buffer zone assessment identifies and documents potential contamination sources—such as livestock areas, roads, or water features—adjacent to the production area.
A field data collection protocol requires workers to record 'field conditions at time of survey.' Which set of data BEST satisfies this requirement?
Answer: Date, time, weather conditions, and worker identification
Date, time, weather conditions, and worker ID establish when the survey occurred, under what conditions, and who is accountable—all required elements.
When conducting a topographic survey to assess flooding risk, which data point is MOST useful for predicting where water will pool after a heavy rain event?
Answer: Elevation contour data identifying low-lying depressions
Elevation contour data directly identifies depressions where water collects, which is the primary predictor of flood pooling and associated contamination risk.
A grower is creating a field history map as part of a GAP field survey. Which historical event would be MOST important to flag on this map?
Answer: Prior use of the field as a biosolid application site
Previous biosolid application is a significant food safety concern that must be documented and factored into current produce safety risk assessments.
Which practice BEST ensures consistency when multiple workers are collecting field survey data across different sections of a large farm?
Answer: Using standardized data collection forms and conducting calibration training
Standardized forms combined with calibration training ensure all workers collect data the same way, reducing variability and improving data reliability.