- Junior Sales Manager
- Technical Sales Representative, Leamington, Ontario
- Technical Sales Representative, Ancaster, Ontario
- HR Generalist
- Head Grower Strawberries (West Virginia USA)
- Global Sourcing Manager
- Buying Operations Manager (BOM Process)
- Sourcing Manager EU
- Manager Operations Ethiopia
- Manager Operations Ethiopia
Top 5 - yesterday
- "Particularly high demand for tracked machines with slewing ring and pipe rail carts at the moment"
- Reducing the spread of viruses with double cover films
- "Four new packs, four new sustainable solutions"
- "Change, differing opinions, and respect for each other, that's timeless"
- Biostimulant wins EU LIFE Award 2023 in the Environment category
Top 5 - last week
Top 5 - last month
- Hasfarm’s network expands in Indonesia, partnering with Bromelia Flowers and Tropika
- "Breeders need to study the Chinese market carefully before introducing a variety"
- North America: “Unbridled optimism for Mother’s Day tempered by reality”
- “A new sales channel for flower companies without any labor or high fixed costs”
- “Carnations have made a comeback; being seen as trendy again”
NL: Alstroemeria grower goes for LED grow lights after successful trial
The four-month trial, managed by Maarten Klein, Plessey’s Head Agronomist, has been running since the end of November 2016 at Together2Grow, to assess the benefits of adding LED to existing HPS lighting compared to just using HPS lamps. The alstroemeria variety tested was Virginia and the existing HPS light intensity of 70 micromoles/s/m² was supplemented with an extra 60 micromoles/s/m² of Plessey LEDs to achieve an average of 130 micromoles/s/m².
By the end of the trial, a yield increase over 20% was achieved for the hybrid LED/HPS installation compared to the control area with HPS lighting alone. Under the LED/HPS lights, the average weight per stem also increased by 2 grams.
As a result of this successful trial, Bernard Zuidgeest, co-owner of Together2Grow, has decided to team up with Plessey to conduct further trials on other alstroemeria varieties with a view to rolling out LED across the business.
Adding Plessey LED light fixtures to existing HPS lighting systems in a hybrid installation allows growers to give greater light intensity to their crop, for longer periods, with little extra heat to manage in the greenhouse. The plants continue to get radiant heat from the HPS lights but also gain the advantage of light wavelengths unique to the LEDs being used, including far‑red, hyper‑red and blue spectrum light. Plessey’s LED fixtures are at least 40% more efficient in energy consumption than HPS fixtures.
Jonathan Barton, Plessey’s Director for Grow Lights, commented: “We are very excited about the results of the LED/HPS hybrid installation achieved at Together2Grow. In addition to the successful results achieved from a similar trial at Gebr Koot tomatoes, this provides evidence of the opportunity for flower growers, as well as vegetable growers, to add our LED lights to their existing HPS lighting to boost yields.”
Bernard Zuidgeest observes: “I am very pleased with the results so far. The crop under LED was looking a lot fuller and healthier and the quality of the flowers was better. By adding no extra radiation heat, but more light, the plants still remained the right plant temperature. We will now trial more varieties with Plessey and plan to convert our greenhouses to hybrid lighting.”
The reaction time from alstroemeria to more light from the LEDs is about 7-8 weeks. The trial started in week 48 of 2016 and by week 2 of 2017 an increase in yield under the LED/HPS hybrid installation was seen week on week.
Full details of the trial results can be found by clicking here.
For more information:
Receive the daily newsletter in your email for free | Click here
Other news in this sector:
- 2023-06-08 "Change, differing opinions, and respect for each other, that's timeless"
- 2023-06-06 LED solutions save 40% of energy for Topline Gerbera and increases stem weight
- 2023-06-05 US: "A tapestry of nature's splendor"
- 2023-06-05 Rare orchid grower says it's a piece of cake
- 2023-06-05 US: Southwest Virginia organic farm blossoming
- 2023-06-01 “With our placement in Türkiye, we have easy access to the rest of the world”
- 2023-06-01 Buying an established farm, expanding a market for luxury flower, and scale up for future growth
- 2023-06-01 "When buying our products, not only the rose production will be supported, also the well-being of rescued wildlife"
- 2023-05-31 Women transform their horizons in rural Morocco
- 2023-05-31 CAN (SK): “The flowers take a long time to start growing but it is worth it because they are so beautiful”
- 2023-05-30 Europe: "Demand and potential is there"
- 2023-05-29 Collier’s Greenhouse executive named finalist in National horticulture competition
- 2023-05-29 US (IA): "Florists feel like they're getting old product from the wholesalers"
- 2023-05-26 Ecuador: Rosaprima shares their 2022-2023 Sustainability Report
- 2023-05-26 Tunisian journalist switches to growing edible flowers
- 2023-05-25 Bransford Webbs continually improves water efficiency
- 2023-05-24 UK: St Briavels grower Jo Thompson proves cut above with flowers role in Coronation
- 2023-05-24 Team from Low Fulney’s Opperman Plants head to Chelsea Flower Show
- 2023-05-22 French nursery specialises in plants that taste of cheese or oysters
- 2023-05-22 Isle of Man: Growing beautiful and sustainable cut flowers