Welcome and Introduction

Erik Runkle (Michigan State University)

Promotion of lettuce growth under an increasing daily light integral depends on the light intensity and photoperiod

Erik Runkle and Nathan Kelly (Michigan State University)

We investigated the interaction of photosynthetic photon flux density and photoperiod on growth and quality attributes of lettuce under daily light integrals ranging from 6.9 to 15.6 mol m^-2 d^-1. We will share results of this study, as well as future research plans in the Controlled Environment Lighting Lab.

Influence of light intensity and CO2 concentration on dill, parsley, and sage growth and development at harvest

Kellie Walters and Roberto Lopez (Michigan State University)

Ph.D. student Kellie Walters will discuss how light intensity and CO₂ concentration influence dill, parsley, and sage seedling growth, morphology, and production time and subsequent greenhouse yield. Dr. Lopez will discuss plans for upcoming indoor temperature, CO2, and lighting research.

Major energy savings during production of baby greens

Cary Mitchell and Fatemeh Sheibani (Purdue University)

Questions and answers

Break

Managing nutrient disorders of hydroponic leafy greens

Chieri Kubota (The Ohio State University)

Leafy greens grown hydroponically in indoor controlled environments exhibit various nutrient disorders when root-zone or aerial environmental conditions are not adequate to maintain specific nutrient uptake to meet the demand to support plant growth. Two types of nutrient disorders that we work on at the Ohio State University are 1) Ca deficiency caused by localized imbalance between Ca uptake and demand, and 2) various macro- and micro-nutrient deficiencies caused by low nutrient solution pH. Dr. Kubota will summarize her team's recent research outcomes of growing basil, lettuce, and spinach in nutrient solution with low pH (4.0-4.5) without causing nutrient disorders, while potentially preventing water-borne oospore disease outbreak.

Improving air distribution and humidity management in vertical farming systems

Murat Kacira (University of Arizona) and Nadia Sabeh (Dr. Greenhouse Inc.)

Questions and answers

Critical elements of CEA economics

Chris Peterson, Simone Valle de Souza, Joseph Seong (Michigan State University)

Questions and answers