Cannabis Cultivation and Science Podcast · Tad Hussey

Episode 150: Plants Under Pressure: How Stress Shapes Secondary Metabolites (w/ Dr. José Leme)

·1 hr 21 min·5 clips

Dr. Leme says cannabis plants survived 10 to 12 days with zero water.

Dr. Jose Leme sits down with Tad Hussey for a conversation rooted in cannabis cultivation science. He traces his path through agronomic engineering, precision agriculture, and plant sciences before describing his work at Southern Illinois University. His lab focuses on controlled environment agriculture, plant secondary metabolites, nutraceutical and pharmaceutical biology, phenomics, plant physiology, biotic and abiotic stress, crop steering, and growing practices. The episode keeps coming back to one central question: what does stress do to a plant, and what can growers actually use from that knowledge? Tad keeps the discussion grounded from a grower’s perspective and pulls the science back toward practical decisions. Leme explains how environmental controls, plant nutrition, biostimulants, and hormones can be used to improve plant production. The conversation also touches on how uniform canopy structure is often treated as an accepted yield advantage. That leads into a study looking at high-stress training and vibration. They talk through the control group, the training treatment, the vibration treatment, and the combination treatment. The biomass results do not show statistical significance. Even so, the numerical differences are still discussed closely. Leme and Hussey note that a few percentage points can matter in a commercial room even when the statistics do not clear the usual threshold. The episode spends time on that tension instead of smoothing it over. That makes the science feel more honest and easier to use. The language stays grounded in cultivation reality rather than drifting into abstraction. It moves between plant physiology, facility conditions, and crop outcomes. When the conversation slows down, it is usually to clarify a term or separate one kind of stress response from another. That pace fits the subject. The result is an interview that asks growers to think carefully about what stress is for, when it helps, and when it is just noise. Listeners also get a sense of how Leme approaches research: cautiously, numerically, and with an eye on what changes practice. The episode closes with the same collegial tone it starts with, keeping the focus on shared curiosity and cultivation decisions.

As heard by us

A practical look at how stress affects plants, yield, and grower decisions.

This episode tracks Dr. Jose Leme and Tad Hussey as they unpack how stress affects a plant and where that shows up in secondary metabolites, biomass, and the decisions growers make under pressure.

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Why you'd press play

You want a science-first cannabis cultivation conversation that gets into stress, physiology, and the economics of small yield changes.

Read the full recommendation in PlayNext →

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