The Scouting SOP & Biosecurity Backbone
The exact weekly routine — sticky-card grids, scope checks, hot-spot mapping — plus the clean→dirty workflow and tool hygiene that keep pests and viroids from moving through your facility.
A scout finds problems while they're still cheap to fix. The job is not to react to visible damage — that's already a failure — it's to catch the first thrips on a card, the first stippling on a lower leaf, the first fungus gnat over the media. Two tools carry most of the load: sticky cards for flying adults (blue for thrips, yellow for fungus gnats and aphids) and a 60–100× scope for the mites and eggs your eye and a hand loupe will never see.
| Monitoring tool | Targets | Placement / cadence |
|---|---|---|
| Blue sticky cards | Thrips | ~1 card per 100–200 ft², canopy height; count weekly |
| Yellow sticky cards | Fungus gnats, aphids, whitefly | ~1 card per 100–200 ft², at media surface for gnats; count weekly |
| 10–14× hand loupe | Spider mites (0.4–0.5 mm) + eggs | Leaf undersides, lower/mid canopy |
| 60–100× dissecting/USB scope | Russet mite (<0.2 mm), broad mite (~0.2 mm) | New growth + undersides; weekly, focus on distorted tissue |
| Root inspection | Root aphids, Pythium/Fusarium | Pull a plug/block when above-ground symptoms 'won't correct' |
The rest of this lesson is for members
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