canopy analysis system Articles

  • Canopy gas exchange measurements of cotton in an open system

    A portable, open transparent chamber system for measuring canopy gas exchanges was developed and tested. Differentials between incoming and outgoing atmospheric H2O and CO2 concentrations were used to calculate canopy transpiration (E) and net assimilation (A) at 10-s intervals using solenoid valve actuated sample lines connected to an infrared gas analyzer. A programmable data logger controlled ...

  • Can changes in canopy and/or root system architecture explain historical maize yield trends in the U.S. corn belt?

    Continuous increase in the yield of maize (Zea mays L.) in the U.S. Corn Belt has involved an interaction with plant density. A number of contributing traits and mechanisms have been suggested. In this study we used a modeling approach to examine whether changes in canopy and/or root system architecture might explain the observed trends. A maize crop model was generalized so that changes in ...

  • Maize morphophysiological responses to intense crowding and low nitrogen availability: an analysis and review

    Mounting concerns over the cost and environmental impact of N fertilizer combined with progressively higher plant densities in maize (Zea mays L.) production systems make progress in maize N use efficiency (NUE) and N stress tolerance essential. The primary objectives of this 3-yr field study were to (i) evaluate the N responsiveness, NUE, and N stress tolerance of multiple modern maize genotypes ...

  • Monitoring ecosystem optical properties with the UniSpec-SC

    Understanding patterns of ecosystem properties is important if we are to effectively monitor ecosystem change due to a variety of reasons (e.g. global changes, human management). Remote sensing provides a great tool for monitoring the earth's surface at different temporal and spatial scales. Patterns of vegetation and biodiversity dynamics are important ecosystem properties, with strong links to ...


    By PP Systems

  • 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

  • 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

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