intra-canopy lighting Articles

  • 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

  • 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

  • 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 Decagon Devices, 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 ...

  • 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 ...

  • 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.

  • Coffee production systems

    Types of production systems Roughly, five types of coffee production systems can be distinguished (Moguel, 1996, in Courville, forthcoming): 1)Traditional rustic coffee system: coffee production under forest trees by substitution of plants growing on the floor of a (sub)-tropical forest with coffee. There is a minimal impact on the original forest ecosystem; 2)Traditional polyculture system ...

  • California Vineyard Finds Large Role for Compost

    Untitled Document I CAME to Robert Sinskey Vineyards (RSV) with experience in both small and large-scale wine-grape farming, all of it in ...


    By BioCycle Magazine

  • AminoA+ Update and Autumn Recommendations 2016

    AminoA+ Update With harvest 2016 coming to a close and also the first year of our commercial sales of AminoA+ we thought we should review the results and also make some recommendations based on this years’ experience. ...


    By AminoA Ltd

  • Barnes foundation art gallery Philadelphia, PA - Case Study

    Key Parameters Type of Facility – New Construction Function – Art Gallery / Museum Area – three stories, 93,000 sq ft Project Cost: $150M Project Completed – May, 2012 LEED Platinum Certification Challenge: IAQ, climate control, sustainable design. Environmental conditions ...

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you