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

Rachel Tomko, PhD.

10 July, 2025, 1 PM MST 

Understanding Young Adults’ Cannabis Use and Craving in Naturalistic Settings: Insights from Ecological Momentary Assessment 

Dr. Rachel Tomko is an Associate Professor in the Addiction Sciences Division at MUSC’s Department of Psychiatry and Behavioral Sciences and a licensed clinical psychologist. Her research focuses on how individual and sex-related factors influence cannabis […]

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Cynthia Ocamb, PhD.

July 16, 2025, 11 AM MST

Cynthia Ocamb is a professor in the Department of Botany and Plant Pathology at Oregon State University, based in Corvallis, OR. Ocamb provides statewide leadership in the diagnosis and management of diseases of field and vegetable crops as an Extension specialist in plant pathology. She is a co-editor of the […]

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Carolina Corredor, PhD.

June 18, 2025, 11:00AM MST

Carolina Corredor, Ph.D. in Agroecology and Agricultural Microbiologist, specializes in cannabis cultivation, plant physiology, plant–microbe interactions, and seed viability. With over six years of teaching experience in biology and microbiology, her research focuses on optimizing sustainable cannabis production for cannabinoids, fiber, and grain. As a Visiting Research Scholar and Postdoctoral Researcher, […]

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Devan Kansagara, MD., PhD.

Systematically Testing the Evidence on Marijuana (STEM): Bridging the science of cannabis health effects and clinical practice

June 12, 2025, 1:00 PM MST

Devan Kansagara MD, MCR is a Professor of Medicine at Oregon Health and Science University. He practices and teaches primary care and hospital- based internal medicine in the VA Portland Health Care System. His […]

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Dan Covey, PHD

Effects of isolated cannabinoids and endocannabinoids on emotional behavior in rodents

May 8, 2025 1:00 PM MST

Dan is currently an Assistant Professor at Lovelace Biomedical Research Institute (LBRI) in Albuquerque, New Mexico. He started this position in June 2020 after completing his PhD at Illinois State University and a postdoctoral fellowship at the University of Maryland […]

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Nolan Kane, PhD.

Genetics, chemistry and the evolution of sex chromosomes in Cannabis

May 21, 2025 11:00 AM MST

Dr. Nolan Kane is an associate professor in the ebio department at the university of Colorado, boulder. he uses genomic approaches to study adaptation to new environments, domestication of wild plants into valuable crops, and the formation of new species. his work has […]

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