Category: Greenhouse Tomatoes

GrowON Lunch and Learn: Dynamic LED Lighting and the Circadian Rhythm

Published on by Fadi Al-Daoud

Access the recording and presentation from the GrowON lunch and learn that occurred on May 12, 2023 (12:00-1:00 PM EST) in person and online to learn about the effect of dynamic LED lighting on the circadian rhythm of crops.

Continue reading “GrowON Lunch and Learn: Dynamic LED Lighting and the Circadian Rhythm” →

Carbon Dioxide (CO2) Enrichment in Controlled Environment Agriculture – Is it always a good idea?

Published on by Fadi Al-Daoud

Authors:

Dr. Fadi Al-Daoud (Greenhouse Vegetable Specialist, Ontario Ministry of Agriculture, Food and Rural Affairs, Harrow, ON)

Dr. Xiuming Hao (Research Scientist, Agriculture and Agri-Food Canada, Harrow, ON)

Table of contents:

  1. Introduction
  2. What is CO2?
  3. CO2 Enrichment and Plant Physiology
  4. CO2 Enrichment and High Light and Heat
  5. So, is CO2 enrichment always a good idea?
  6. References
Continue reading “Carbon Dioxide (CO2) Enrichment in Controlled Environment Agriculture – Is it always a good idea?” →

GrowON Lunch and Learn: Autonomous Greenhouse – Improving Production and Sustainability

Published on by Fadi Al-Daoud1 Comment

Enjoy this recording of the GrowON lunch and learn that took place in person at Ontario Greenhouse Vegetable Growers and online (March 20, 2023) and learn more about autonomous growing technologies.

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GrowON Webinar: Greenhouse Dehumidification – a tool for dealing with the carbon crisis

Published on by Fadi Al-Daoud

We hope you enjoy this recording of the GrowON webinar about greenhouse dehumidification with Dr. Jeanine West, environmental specialist with Flowers Canada (Ontario) and Marco de Leonardis (Freeman Herbs).

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Managing Nighttime Greenhouse Light Emissions

Published on by Fadi Al-Daoud
Nighttime greenhouse light emissions. Photo credit – Benjamin Snow, University of Guelph.

Author: Ontario Ministry of Agriculture, Food, and Rural Affairs (OMAFRA)

An increase in the use of supplemental lighting in greenhouses has been accompanied with an increase in the amount of light emitted from greenhouses at night during fall and winter months. Without proper management strategies, light emitted from greenhouses during nighttime hours can potentially be disruptive to neighbouring residents. As a result, the objective of this document is to outline the latest research in greenhouse light management for producers and to provide information on managing nuisance complaints should they arise.

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Thrips Identification

Published on by Cara McCreary
Western flower thrips in pepper flower

Simple Thrips Key for Growers:

This grower-friendly, pictorial key has been developed to make thrips identification easier on-farm. Recently, thrips species other than western flower thrips have become a significant problem in Ontario floriculture greenhouses. Correct identification is the first step to better control.

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