Announcements

Job offersmore »

Tweeting Growers

Top 5 - yesterday

Top 5 - last week

Top 5 - last month

Exchange ratesmore »




Study: The effect of far red on microgreen mustard

Heliospectra's Light Test team is set up to test the effect of different wavelengths and spectrum compositions on different types of crops. In a new experiment, they test different light quality on Microgreen Mustard.
  • Place and duration: Heliospectra PlantLab
  • Species: Microgreen Mustard (Brassica juncea) cultivar “Red frills”
  • Lamps: Heliospectra Lightbar
  • PAR/Intensity: Varied between 200 and 180 µmol/m2/s
  • Photoperiod: 18 hours
  • The objective of the experiment: To test different light quality on microgreen mustard.
  • Results: The mustard grown with far-red were taller than that grown without far-red. Mustard grown without far-red had a darker leaf color and a stronger spicy taste.
Method
Mustard, Red Frills, were sown on the 31st of January and kept in the germination area under 24 h light for 3 days. The mustard was then moved into a vertical installation at the Heliospectra PlantLab.

The vertical set-up was built up in a growth unit of a 1.4-m2 (15-ft2) open area with reflective curtains and an open front. The photoperiod was 18 hours and the temperature was set point Day/Night 22/17 °C and humidity set to 60 %.

Two spectra were tested using the Heliospectra Lightbar, a combination of blue (450nm), red (660nm) and white LEDs (5700K), and a light intensity of 200 µmol/m2/s1. The second spectrum had an additional far-red (735nm) and a light intensity of 180 µmol/m2/s1.


Crop grown under LED treatments for 8 days, 11 days after seeding.

After 19 days, 22 days after seeding, the plants had become a bit overgrown and the differences between the treatments were visible.

Results
Far-red light has an effect on extension growth of the plant. Far-red influences the height of the plant by influencing the length of stems and the size of leaves. This was visible in the mustard grown with far-red which was taller than the plants grown without FR. The plants grown without far-red was darker in leaf color. One observation was that the plants without far-red had a stronger spicy taste. Further investigation on far-red effect on plants, not only size but other quality aspects like taste and texture, is needed.






Crop grown under LED treatments at harvest 19 days, 22 days after seeding. Left: crops without far-red; right: with far-red.

For more information:
Heliospectra
Box 5401 SE-402 29 Göteborg Sweden
Phone: +46 31 40 67 10
Fax: +46 31 83 37 82
info@heliospectra.com
www.heliospectra.com


Publication date: 5/17/2017

 


 

Other news in this sector:

9/19/2017 2nd Greenhouse and Hydroponic Technical Management Course for India
9/19/2017 Dutch grower boosts tomato yield in LED trial
9/19/2017 Hoogendoorn whitepapers on Next Generation Growing available via webinars
9/19/2017 Canada: Guelph and CFIA collaboration gets $320,000 investment
9/15/2017 Motorleaf reveals AI driven Tomato Yield Prediction solution
9/15/2017 Systems of pruning on Jigacho under greenhouse conditions
9/14/2017 Can food be produced on floating islands?
9/14/2017 US (NY): Aquaponics program teaches students what agriculture is all about
9/12/2017 Plant responses to environmental conditions
9/11/2017 Spain: INTIA’s 1st local Fertinnowa showcase event
9/11/2017 "Science and technology the answer to water quality"
9/11/2017 Jordan, Norway work together to grow food in the desert
9/7/2017 Autogrow announces hackathon to grow crops on Mars
9/5/2017 Hawaii: Ultra fine bubbles help lettuce grower reduce tipburn
9/4/2017 US (DE): Plasticulture strawberry planting and fall growth considerations
9/4/2017 Using water-driven injectors and fertigation systems
8/31/2017 Leaf sensors can tell farmers when crops need to be watered
8/31/2017 Germany: What is going on with the tomatoes?
8/30/2017 Finding of self-medicating behavior in bees not supported in further research
8/30/2017 $8.8m awarded to support innovation in US strawberry production