Brian Whipker, PhD., Cannabis Insights: Diagnosing Nutrient Disorders

October 2023

Brian Whipker has been a Professor at NC State University for over 30 years specializing in plant nutrition, plant growth regulators, and disorder diagnostics. He has published >120 scientific papers and >300 grower articles during his career. He co-created an online grower resource fertdirtandsquirt.com which focuses on nutrient monitoring and nutrient standards. He also co-authored the book Nutrient Deficiencies in Bedding Plants: A Pictorial Guide for Identification and Correction. The culmination of his plant growth regulator research is emphasized in the Plant Growth Regulator Guide for Annuals published by Fine America/GrowerTalks. His current focus is to provide scientifically-based grower information about plant leaf tissue analysis standards and plant nutrition.

Learn more by registering for our webinar at the link below.

Previous Webinars

Travis Higginbotham

March 18 at 11:00 AM (MST)

Turning Science into Cash Flow. Crop production performance and ROI analysis driven by crop science.

Travis Higginbitham is the Founder & CEO of Due Diligence Horticulture (DDH). He is a horticultural and operations executive with deep experience leading controlled-environment agriculture, cannabis, and ornamental production businesses through innovation, growth, transition, and turnaround. Mr. […]

Read More »

Dr. Yan Wang

12 March, 1:00 PM MST

Real-time and long-term effects of medical marijuana on older adults with chronic pain: Early findings from a prospective cohort study.

 

Yan Wang is an Associate Professor of Epidemiology at the University of Florida (UF). Her research interests focus on leveraging advanced technologies and methods (e.g., wearable sensors, ecological momentary assessment/EMA) to improve […]

Read More »

Igor Grant, M.D. and Thomas Marcotte, Ph.D.

Thursday, February 12th at 1:00 PM MST

The UC San Diego Center for Medicinal Cannabis Research: Some Findings

Igor Grant, MD is Distinguished Professor, and Director of the Center for Medicinal Cannabis Research (CMCR) at the University of California San Diego (UCSD). Established in 2000, the CMCR has been at the forefront of advancing science and policy […]

Read More »

Almut Winterstein, PhD.

Jan 8, 2026 01:00 PM Mountain Time

Clinical research priorities gleaned real-world use patterns: the MEdical Marijuana Outcomes Research repositorY (MEMORY)

Almut Winterstein is Distinguished Professor and the Dr. Robert and Barbara Crisafi Chair for Medication Safety in the Department of Pharmaceutical Outcomes and Policy and in the Department of Epidemiology, and the founding Director of the […]

Read More »

Carolyn Baglole, PhD,

December, 11, 2025 1:00 PM MST

Multi-omics dissection of the molecular and pharmacological effects of inhaled cannabis

Professor Carolyn Baglole earned her Bachelor of Science and Master of Science degrees from the University of Prince Edward Island, followed by a PhD in Physiology and Pharmacology from the University of Calgary. Dr. Baglole then completed postdoctoral training at […]

Read More »

Margaret Haney, PhD

Nov 13, 2025 01:00 PM MST

Cannabis Misuse and Therapeutic Potential: Placebo-controlled Laboratory Studies

Dr. Margaret (Meg) Haney is a Professor of Neurobiology (in Psychiatry) at the Columbia University Irving Medical Center. As the Director of the Cannabis Research Laboratory and of the Substance Use Research Center in the Division of Substance Use Disorders, Dr. Haney is […]

Read More »