Customer Stories May 23, 2018

Mans Organics: Decreased Harvest Time for Tomatoes by 15 Days in South Alberta

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About Mans Organics

Mans Organics is a certified organic family-owned and operated farm in South Alberta, Canada. The farm was founded in 1994 by Henk and Rita Mans, who ran it using conventional farming practices.

As the Mans learned more about the impact that conventional farming has on soil health and the health of end consumers, they decided to go organic. The farm received its organic certification in 2007.

In 2012, their son Andrew came back to the farm to join the family business and built the farm’s first 1-acre greenhouse so that they could expand into growing more vegetables year-round. Mans Organics planted and harvested their first crop of tomatoes, cucumbers and peppers in 2013. Andrew is continually looking for innovative ways to improve the farm’s yields and revenue flow.

Increased Yields for Tomatoes and Cucumbers

First Harvest 15 Days Earlier

Reduced Fixture Maintenance Compared to HPS

Switching from HPS to LEDs: A No Brainer

Andrew initially installed high-pressure sodium (HPS) lights in the greenhouse, but quickly found that they had a high failure rate.

“You couldn’t ever be sure that your HPS were still working every morning,” said Andrew, “Yes, they were under warranty and the bulbs could be replaced. But it was too many headaches when I needed the area to be at 100%.”

Tired of the HPS lights’ frequent maintenance and unreliability, Andrew began to look in to greenhouse lighting alternatives that had lower failure rates. Andrew was intrigued by the flexibility and variability that LEDs offered, and decided to conduct a trial using LumiGrow fixtures in his propagation area.

After a successful propagation trial, he ran an additional trial with his highwire Long English cucumber crop. Andrew was so pleased with how well the plants produced under the LEDs that he promptly put in an order for 70 LumiGrow smart fixtures to light 2,500 square feet of his tomato production area. He also added LumiGrow smartPARTM Wireless Control Software so that he could adjust the lights’ spectrum and monitor the estimated energy usage.

“Using smartPAR gives you a huge amount of variability compared to just telling your control system to turn lights on and off. It’s real good thing for when those new plants come in. Rather than put them on full power, you can give them [dynamic light] recipes that let them adapt a bit per day.”

Simple Changes with Big Results

Andrew was excited to grow tomatoes under LEDs for the first time. However, his young tomato transplants were less enthusiastic about the low light conditions they were accustomed to being transitioned to supplemental lighting at full capacity. Their leaves began to show early signs of stress and leaf damage. Thanks to smartPAR™’s view mode, Andrew was easily able to check on the plants’ leaf color and caught the issue early.

He reached out to LumiGrow for immediate assistance. LumiGrow Research’s support team quickly identified the issue and helped Andrew put together a plan to ease the plants transition into higher yield lighting conditions. As it turns out, various crops can require a gradual transition period when going from low light to optimal light environments.

With LumiGrow dynamic LED fixtures, Andrew was able to use smartPARTM to dial back the red and blue light to 40% of their full capacity for 5 days, then increase to 50% for another 2 days. By day 8, he had all spectral channels at 100% of their capacity.

This smart lighting strategy was easily deployed and ensured higher crop health through the transition- all new growth came in dark green and healthy. During production, Andrew went further to create a light program to “mimic the sunrise” – as he puts it – turning the lights on at 50% of capacity for the first hour then back to 100% for the rest of the day.

When Andrew harvested his first crop of LED-lit tomatoes in April, he was pleased that he was able to harvest them a full 15 days earlier than his unlit tomato crop. This translated to shorter turn times and less time spent overall waiting for fruit to ripen, which allowed him to save on greenhouse heating during the winter months in addition to saving electricity on lighting. The LED-lit crop also had a higher yield than the unlit crop.

All of these factors allow Andrew to reliably scale his tomato production, mitigate big swings in Alberta’s weather and get his tomatoes to market sooner.

Mans Organics Greenhouse surround by now, pink LED grow lights on

Long-Term Flexibility

Andrew has also played with the spectral channels lighting his cucumbers. He noticed he was able to customize his crop- increasing the blue light combined with a 12-hour lighting period resulted in generative, short-noding plants. He then dialed back the lights to let the plants stretch and allow the fruit to grow in size.

In keeping with organic principles, he plants a wide variety of crops and maintains a crop rotation schedule in the greenhouse to maintain his soil’s health. The ability to quickly and easily reconfigure zones and adjust spectrum to meet multiple crops needs simultaneously gives Andrew the freedom to pivot his business strategy as he chooses.

For example, if he wants to use part of the greenhouse for propagation for a few weeks out of the year, he can set that area to a seedling-friendly light program, then switch to a higher intensity light program when he moves into production. Overall, the flexibility his LumiGrow lights offer brings Andrew peace of mind:

“The question of whether or not LEDs work has long been answered for me.”

  • Problem. HPS lights required frequent maintenance, light output degraded quickly and were unreliable during critical plant growth stages
  • Solution. Replaced HPS with LEDs (2:3 ratio) to reduce fixture maintenance, and added smartPARTM software to easily control spectrum
  • Result. Crop harvested 15 days earlier, reduced fixture maintenance, greater control over light intensity in variable growing area, increasing overall revenue streams
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