Greenhouse IPM principles, plant quarantine, scouting, monitoring, sanitation, media, and integrated pest-management practices.
Protected Cultivation
Incoming Plant Quarantine & Clean Stock
Incoming clones, plugs, liners, mother stock, and other living material can introduce arthropods and pathogens before obvious symptoms appear. Separation and observation reduce the chance of moving an unseen problem into the main crop.
Key concepts
- Asymptomatic material can still carry pests or pathogens
- Vegetative propagation can preserve and spread systemic infections
- A physically separated observation area is more useful than a label alone
- Records should connect source, date, lot, observations, and disposition
What to measure or observe
- Inspect incoming material under magnification
- Check upper and lower leaf surfaces and root zones
- Record supplier and lot information
- Keep suspect material separated until evidence supports release or removal
Common mistakes
- Moving new plants directly into established crops
- Relying only on visible leaf symptoms
- Sharing tools between quarantine and production without sanitation
- Losing lot identity after unpacking
Visuals this lesson still needs
- Quarantine-zone layout
- Incoming inspection workflow
- Clean-to-dirty movement map
- Lot-traceability record example
Evidence & further reading
Sources connected to this lesson
These references support specific biological, diagnostic, environmental, or process concepts used in this lesson. They are not a substitute for crop-specific testing or local regulatory guidance.Controlled access, crop scouting, movement controls, sanitation, pest introduction pathways, and greenhouse biosecurity practices.
Cannabis greenhouse disease diagnosis and integrated management, including powdery mildew, Botrytis, root disease, HLVd, sanitation, irrigation, airflow, and post-harvest microbial risk.