
Event
OMAFRA CEA Series: Plant Empowerment Workshop
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May 27 - May 28, 2021
Virtual
Title: Plant Empowerment Workshop
Who:
- Dr. Peter van Weel, co-author of Plant Empowerment — The Basic Principles
- Ton Habraken, greenhouse climate adviser, Ludvig Svensson
- René Beerkens, greenhouse climate consultant and trainer, Hoogendoorn Growth Management
- Evripidis Papadopoulos, data analyst, LetsGrow.com
Date and Time:
Thursday, May 27, 2021, 9:00 AM -12:30 PM EST
Friday, May 28, 2021, 9:00 AM — 1:15 PM EST
Where: Zoom
Registration:
https://zoom.us/webinar/register/WN_2seaYKsYQcuLj7Pdb1h6tg
Description:
Day 1: Introduction to the theory of Plant Empowerment (Dr. Peter van Weel)
Thursday, May 27, 2021 (9:00 AM-12:30 PM EST)
9:00–10:15 AM EST
Basic knowledge about physics and physiology that play an important role in a greenhouse and for plants:
- The interaction between the main resources: CO2, light, water, RH and temperature.
- The energy balance and stomata opening.
- The role of air movement and ventilation in climate uniformity and physiology.
- The role of heat emission in the dark.
10:15–10:30 AM EST
Question and Answer
10:30–10:45 AM EST
Break
10:45 AM -12:00 PM EST
Plant Empowerment, from experience-based control to sensor-based control:
- Controlling 6 balances instead of climate. Why are they important?
- Why and how reduction of transpiration under intense light can increase photosynthesis.
- Why is transpiration control in the dark better than RH or VD control?
- Prevention of fungal diseases with better screen management.
12:00–12:30 PM EST
Question and Answer
Day 2: Practical Application of Plant Empowerment. (Dr. Peter van Weel)
Friday, May 28, 2021, 9:00 AM — 1:15 PM EST
- Introduction to sensors, software tools and the value of data analysis:
- A new generation of sensors: leaf temperature and tissue temperature, net absorbed radiation, and the microclimate.
- Measure energy balance to control transpiration, stomata opening and water balance.
- The RTR tool (ratio temperature to radiation) to control plant balance.
- Demonstration of the radiation monitor tool: the effect of energy screens on the greenhouse climate, transpiration, energy consumption and plant conditions.
- Demonstration of the GPE simulation tool: how can I use the hardware components such as screens, light, air tubes, air circulation or ventilation fans and windows in an integrated way?
2. The autonomous greenhouse.
10:30–11:00 AM EST
Question and Answer
11:00–11:15 AM EST
Break
11:15 AM-12:45 PM EST
- How can the 6 balances assist in obtaining positive effects of light abatement screens (Ton Habraken and René Beerkens).
2. How do I start with the RTR tool? (Evripidis Papadopoulos).
12:45–1:15
Question and Answer
Contact: Dr. Fadi Al-Daoud, Greenhouse Vegetable Specialist
Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA)
E-mail: fadi.al-daoud@ontario.ca
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