intra-canopy lighting Articles

  • Case study - Wilmott Dixon Canopy

    BRE-Watford System kWp: 2.25 Area: 28.6 m sq Inverter: Mastervolt Modules Used: PS-C Transparent Polysolar designed and supplied a retrofit roof garden canopy for Willmott Dixon Healthcare Campus at BRE Innovation Park, Watford. Objective: To provide a weather proof canopy designed to offer a warm light but shaded area for sitting out in while also contributing to ...


    By Polysolar Limited

  • Increase greenhouse efficiency with boom lighting

    As a leader in greenhouse automation equipment, we are always looking to bring our growers new ideas on how to best utilize our equipment within their greenhouse. With the release of our highly coveted Universal Attachment, we are able to bring you new ideas on how to do more with less. The Universal Attachment is highly effective for attaching fans, insect mats, fans and lights. Boom lighting ...


    By Cherry Creek Systems

  • Case study - BIPV Petrol Forecourt Canopy

    Weymouth System kWp: 23.4 Area: 371 m sq Inverter: Fronius Modules Used: PS-C Transparent Series Polysolar completed a second petrol filling station in Wymouth following the success of the first in Bishops Waltham. Objective: Provide an attractive weather-proof canopy transmitting natural light generating renewable energy to power the site. Result: ...


    By Polysolar Limited

  • Measurement of Leaf/Canopy Level Reflectance with The UniSpec-SC

    The UniSpec-SC, commonly referred to as a “Reflectometer”, is a single channel, field portable instrument designed for measurement of leaf/canopy reflectance. It features an innovative user interface with integral computer and large, full color LCD, built-in light source and extensive range of accessories for measurement on individual leaves (including needles) and vegetation. It is a ...


    By PP Systems

  • Case study - BIPV Petrol Forecourt Canopy - Sainsbury

    Bishops Waltham System kWp: 16 Area: 242 m sq Inverter: Fronius Modules Used: PS-C Transparent Polysolar were approached for this unique project, the first of its kind, constructing a petrol filling station canopy which could generate energy for the kiosk, whilst providing a pleasant environment for the clients. Objective: Provide an attractive weather-proof canopy ...


    By Polysolar Limited

  • Ground-based canopy reflectance sensing for variable-rate nitrogen corn fertilization

    Nitrogen available to support corn (Zea mays L.) production can be highly variable within fields. Canopy reflectance sensing for assessing crop N health has been proposed as a technology to base side-dress variable-rate N application. Objectives of this research were to evaluate the use of active-light crop-canopy reflectance sensors for assessing corn N need, and derive the N fertilizer rate ...

  • Light and moisture competition effects on biomass of red clover underseeded to winter wheat

    Red clover (Trifolium pratense L.) use as an underseeded cover crop in winter cereals has declined due to inability of growers to consistently establish uniform stands. The objective of this study was to assess the effect of light and soil moisture competition on underseeded red clover establishment and end of season dry matter production. Field trials were conducted at multiple locations in 2005 ...

  • Herb layer productivity under different light gaps in the forests of Western Ghats of Karnataka, India

    A productivity estimation of tree, shrub and herb layer biomass was undertaken in Uttara Kannada, a Western Ghats district in Karnataka in differentially managed forests. In addition to biomass, light gap in these sample sites was also estimated to understand the relationship between the light interception pattern at different canopy layers and their productivity. The studies indicate that tree ...


    By Inderscience Publishers

  • Corn morphology, mass, and grain yield as affected by early-season red: far-red light environments

    The spatial arrangement among plants affects both vegetative and reproductive meristem development. More axillary meristems develop at lower plant densities, which are associated with relatively high red:far-red light ratios (R:FRs; 645:735 nm). However, little is known about the effect of R:FR on corn (Zea mays L.) productivity. We conducted field research to determine the effect of early-season ...

  • Morphological, anatomical, and physiological changes of orchardgrass leaves grown under fluctuating light regimes

    The physiological and anatomical adaptability of pastures growing under trees in silvopastoral systems can alter the efficiency of conversion of energy to dry matter (DM). This study was conducted to determine the effects of different fluctuating light regimes (from 24 to 100% transmissivity) on leaf physiology, morphology, anatomy, and structure of orchardgrass (Dactylis glomerata L.) in a ...

  • Simple models for carbon assimilation by plants

    The detailed processes in photosynthesis are complicated and hard to model. In many cases, however, it’s possible to simplify the model by focusing on one or more of the limitations to assimilation. Carbon Assimilation Simplified: Light and WaterIn simplest terms, carbon assimilation involves the chemical transformation of carbon dioxide and water to carbohydrate and oxygen within the leaves of ...


    By METER Group, Inc.

  • Variation in photosynthetic photon flux density within a tropical seasonal rain forest of Xishuangbanna, south-western China

    The effects of canopy development, solar angle, and weather conditions on temporal variation in photosynthetic photon flux density (PPFD) at three heights within a tropical rain forest canopy in Xishuangbanna, China, were examined. PPFD was measured every second and stored as 10-min averages from 1 December 2002 to 30 November 2003. PPFD variability was examined at three different tempcral ...


    By IOS Press

  • Web of knowledge, web of life, web of wonder

    It"s October, it"s late in the season and it"s been a bad year for mushrooms in Finland. Webcaps, a type of mushroom found particularly in the boreal and temperate forests of northern Europe, are no exception. Webcaps play an important role in these forest ecosystems. They are mycorrhizal fungi that live in symbiosis with the trees, providing nutrients and protection from diseases and receiving ...

  • LED or HPS for Growing Cannabis?

    “What lighting source should I use for my licensed cannabis grow?”; “I am comparing LED to HPS for my cannabis operation. Which source do you recommend?” These are questions people ask me almost on a daily basis. We have covered this question in past posts on our blog, like this one by our very own head of marketing: LEDs vs ...


    By P.L. Light Systems Inc.

  • Strategies to make use of plant sensors-based diagnostic information for nitrogen recommendations

    Improvements of nitrogen use efficiency (NUE) may be achieved through the use of sensing tools for N status determination. Leaf and canopy chlorophyll, as well as leaf polyphenolics concentrations, are characteristics strongly affected by N availability that are often used as a surrogate to direct plant N status estimation. Approaches with near-term operational sensors, handheld and ...

  • Nitrogen recommendations for corn: An on-the-go sensor compared with current recommendation methods

    Precision agriculture technologies provide the capability to spatially vary N fertilizer applied to corn (Zea mays L.), potentially improving N use efficiency. The focus of this study was to evaluate the potential of improving N recommendations based on crop canopy reflectance. Corn was grown at four field sites in each of 2 yr in Centre County, Pennsylvania. Preplant treatments included: zero ...

  • Ringwood School - Case Study

    Project: Classroom building Client: Ringwood School Completed: February 2015 Floor Area: 344m² Duration: 12 Weeks Value: £500,000 Turnkey service elements completed: ...


    By Modulek

  • Extreme Makeover: Photosynthesis Edition

    Plants are far better than humans at turning sunlight into food. But they’re not nearly as good as they could be: Thanks to quirks in the systems that have evolved to capture solar energy and use it to build sugars from carbon dioxide and water, the conversion efficiency of photosynthesis is but a few percent at best. With the need to produce more crops growing even faster than human ...


    By Ensia

  • A Short Payback Period for Illumitex LEDs vs. 1000 W HPS

    Overview Growers interested in purchasing supplemental or sole-source lighting need to be able to accurately predict the economics and cost of ownership for the many different types of fixture layouts and options available on the market. A useful financial estimate is the simple payback (or return on investment, ROI) of choosing one system over another. The ROI takes into consideration ...


    By Illumitex Inc.

  • A Short Payback Period for Illumitex LEDs vs. 1000 W HPS | White Paper

    Overview Growers interested in purchasing supplemental or sole-source lighting need to be able to accurately predict the economics and cost of ownership for the many different types of fixture layouts and options available on the market.  A useful financial estimate is the simple payback (or return on investment, ROI) of choosing one system over another.  The ROI takes into ...


    By Illumitex Inc.

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