DTFGENETICSDREAM THE FUTURE
Teaching
Healthy Cultivation

Diagnostics Deep Lab · Evidence First

Describe the evidence before naming the problem.

A useful diagnosis starts with what is directly observed: where the symptom occurs, how it is distributed, how fast it changes, which plants are affected, and what environmental or root-zone measurements changed. Then rank competing explanations and test them.

Open GrowLens observation captureBack to all systems
Workflow

A repeatable differential sequence

Describe. Separate visible observations from interpretations.
Map. Record old/new tissue, canopy position, one plant vs many, and spatial distribution.
Measure. Add air/leaf temperature, RH/VPD, PPFD/DLI, root-zone moisture, pH, EC, and recent changes.
Inspect. Check roots, undersides, nodes, lesions, pests, pathogen-like signs, and physical damage.
Rank. Compare at least two plausible explanations.
Verify. Choose the next measurement or observation most likely to separate the leading explanations.
Pattern

Location matters

Old vs new tissue, upper vs lower canopy, interveinal vs marginal change, tips vs spots, and local vs crop-wide distribution all constrain plausible explanations.

Time

Progression matters

Record when the symptom first appeared, how quickly it moved, and what changed immediately before onset. A time series is more informative than a single photograph.

Context

Environment can mimic nutrition

Heat, light, VPD, root oxygen, irrigation, and salinity can create patterns that resemble nutrient problems. Root problems can appear first in leaves.

Safety

Do not overclaim from images

A photograph is a starting point. Pathogen identity, viroids, chemical composition, and genetic identity may require specific tests or laboratory confirmation.

Evidence boundary: rank explanations; do not treat a symptom chart as proof.