Frost Notes on Upland Vegetable Blocks Near Jecheon | Field Notes
A single overnight frost entry in your spring log can explain autumn yield variance that rainfall charts alone miss.
Cabbage and radish growers on Jecheon upland plots sometimes see yield swings that rainfall totals do not explain. A May frost that burned outer leaves on transplants can reduce final head weight by fifteen percent even when summer rain looked normal.
Record temperature, not just "frost"
Write the approximate low and which blocks received overhead sprinkler protection. Protected blocks should be tagged separately in your planting map so we do not blend recovered and unrecovered areas into one average.
Photograph damage within 48 hours
Leaf scorch patterns fade quickly. A dated photo beside a field stake helps us correlate satellite vegetation indices with ground truth when we review your plot data.
Late frost vs early heat
A frost note in the same week as a heat spike gets flagged as compound stress. Mention both; the briefing will show a separate stress marker on the season timeline chart.