Navigation Links
Rotating high-pressure sodium lamps provide flowering plants for spring markets
Date:9/21/2010

efficacy of a rotating high-pressure sodium lamp (HPS) in promoting flowering with night-interruption lighting using incandescent lamps.

Seedlings were grown under natural short-day photoperiods (12 hours or less) and night-interruption treatments were delivered from a rotating HPS lamp mounted at one gable end of the greenhouse or from incandescent lamps that were illuminated continuously for four hours or cyclically for 6 minutes every 30 minutes for 4 hours. Within 16 weeks, 80% or more of the plants of each species that received night-interruption lighting had a visible flower bud or inflorescence; all species but petunia remained vegetative under the short-day treatment. Flowering of all species grown at 13 meters from the rotating HPS lamp was delayed by 14 to 31 days compared with those under continuous incandescent illumination.

The researchers estimated that the weekly cost to operate night-interruption lighting was an impressive 80% to 83% less than the cost of continuous incandescent lighting. According to Blanchard and Runkle, "a rotating HPS lamp operated continuously during a 4-hour night-interruption was effective at promoting flowering in these long-day species and consumed less energy compared with incandescent lamps operated continuously." The researchers concluded that use of rotating high-pressure sodium lamps could be effective in commercial production as long as the light intensity is above the recommended value.


'/>"/>

Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Air pollution doesnt increase risk of preeclampsia, early delivery, study finds
2. Yale-developed test can help predict and diagnose preeclampsia
3. Miscarriage and infertility treatment increase pre-eclampsia risk
4. New insights provide promise for development of tools to protect damaged tissues
5. Hair provides proof of the link between chronic stress and heart attack
6. LSUHSC pediatric weight expert provides obesity trinity answers
7. Special edition journal provides new perspectives and guidance for managing white pine blister rust
8. Huntingtons disease discovery provides new hope for treatment
9. Mother Nature to provide an environmentally friendly method for reducing mosquitoes
10. Aware Biometrics Software Provided for Large Federal Agencys PIV Credentialing System
11. Flemish researchers provide the first experimental evidence of dynamic allostery in protein regulation
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Rotating high-pressure sodium lamps provide flowering plants for spring markets
(Date:8/20/2015)... 2015   Sensory, Inc ., a Silicon ... experience and security of consumer electronics through state-of-the-art ... its TrulySecure™ is the first multimodal ... FIDO Certified™. The FIDO (Fast Identification ... FIDO UAF (Universal Authentication Framework) 1.0 specifications, which ...
(Date:8/19/2015)... N.Y. , Aug. 19, 2015  VOXX ... that it has entered into a Definitive Agreement ... property, of iris authentication market leader EyeLock through ... VOXX will have a controlling interest in the ... subject to completion of due diligence.  Expanding on ...
(Date:8/18/2015)... 17, 2015 Research and Markets ( ... "Global Biometric Authentication & Identification Market: Focus ... Forecast, 2015-2020" report to their offering. ... systems market is expected to grow at an ... and generate over $25 billion (approximately) by 2020 ...
Breaking Biology News(10 mins):TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 2TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 3TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 4TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 5VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 2VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 3VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 4VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 5Global Biometric Authentication & Identification Market 2015: Focus On Modality, Motility & Application - Estimation & Forecasts to 2020 for the $25 Billion Industry 2
... of whale population size based on genetics versus historical ... the ecological implications of the large-scale commercial whaling of ... of DNA samples from modern and prehistoric gray whales ... pre-whaling and saw a sharp, recent decrease that is ...
... EAST LANSING, Mich. Having natural habitat in farming ... crops where they control pests and help farmers reduce their ... other predatory insects eat crop pests, saving farmers an estimated ... predatory insects with food and shelter, helping them to survive ...
... More than 50 plasma physicists from across the ... Princeton Plasma Physics Laboratory (PPPL) on Thursday, May 17, ... of the Plasma Science Center for Predictive Control of ... Campus of Princeton University in Plainsboro, N.J., The DOE-funded ...
Cached Biology News:Whale population size, dynamics determined based on ancient DNA 2Increasing predator-friendly land can help farmers reduce costs 2
(Date:8/27/2015)... LANSING, Mich. , Aug. 27, 2015  Neogen ... has acquired the stock of United Kingdom ... supplier of microbiological culture media and diagnostic systems. ... has grown into a leading provider of microbial testing ... and clinical testing markets. The company currently sells into ...
(Date:8/27/2015)... The National Necrotizing Fasciitis Foundation ... by doctors at Vanderbilt University Hospital in ... and Dr. John Crew , director of the ... Center in Daly City, CA. ... pioneered by Dr. Crew, that had previously saved the ...
(Date:8/27/2015)... BIOREM Inc. (TSXV: BRM) ("Biorem" or "the Company") today announced its ... Biorem,s complete second quarter financial statements and MD&A have been filed ... earnings per shareThree-months ended , Six -months endedJune 30 , June ... , 2014 Revenue , 4,709 , 2,459 ... 1,656 , 56 , 3,188 ...
(Date:8/27/2015)... YORK , August 27, 2015 ... enhancing image processing functions in the human vision system, announced ... point guard Chris Paul to develop ... players who want to improve their real-life on-court performance. ... the court, whether it is shooting a ball or blocking ...
Breaking Biology Technology:Neogen acquires U.K.-based Lab M Holdings 2Patient's Life and Eyes Saved from Gruesome Flesh-Eating Infection Consuming Her Face 2Patient's Life and Eyes Saved from Gruesome Flesh-Eating Infection Consuming Her Face 3BIOREM Reports $718,000 Net Earnings for the Second Quarter 2BIOREM Reports $718,000 Net Earnings for the Second Quarter 3Eight-Time All-Star Chris Paul and GlassesOff Partner to Develop Innovative Mobile App Designed to Improve On-Court Performance 2Eight-Time All-Star Chris Paul and GlassesOff Partner to Develop Innovative Mobile App Designed to Improve On-Court Performance 3
... CHESTNUT HILL, MA (12/11/2009) Boston College researchers have observed ... first time and successfully harvested the elusive charges using ultra-thin ... efficiency, the authors report in the current online edition of ... in solar cells, it generates free electrons in a range ...
... , , , CAMBRIDGE, Mass., Dec. ... and biotechnology company specializing in cancer, staph aureus, and ... Pre-clinical Services announced today that Rosalie Dunn, Ph.D., has ... has over 28 years of experience working with small ...
... 10 Microban International, Ltd., the global leader in ... and Information Company of America, a division of Sharp ... into Sharp,s new printing calculators. Infused into the calculator ... the growth of damaging bacteria on the keys. ...
Cached Biology Technology:Elusive 'hot' electrons captured in ultra-thin solar cells 2Rosalie Dunn, Ph.D., Joins Gwathmey, Inc. as Chief Executive Officer 2Microban Signs Exclusive Agreement with Sharp Electronics to Launch Calculators with New Microban(R) 3G Silver(TM) Antimicrobial Technology 2
... Synthesis Service provides you with ... knockdown any gene. We offer ... pairs with terminal dT nucleotides), ... lengths of your choice. Each ...
... fully genetically encoded fluorescent sensor capable for ... (H2O2), one of the main ROS generated ... yellow fluorescent protein inserted into the regulatory ... HyPer demonstrates submicromolar affinity to H2O2 and ...
Alexa Fluor 647 anti-mouse Qa-2...
... System is ideal for developing single ... reagents. The Luminex 100 Instrument System ... version 1.7, the XY platform and ... $2000 in free Beadlyte products if ...
Biology Products: