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2 Jan 2018

Successful Sanitation

Majsztrik, J. and Sarah A. White (Clemson University)

Typically, the first step in irrigation water treatment is physical removal of larger particles such as sediment, substrate material and organic matter. But rapid sand, mesh filters, etc. are not able to remove biological contaminants such plant diseases. Chemical disinfection is a safe and effective way to ensure removal of plant disease organisms from irrigation water. Chemical treatment efficacy declines if high levels of organic matter are present in water, making it necessary to increase the concentrations of chemicals needed to treat the same volume of water.  Keep reading to find out more about chemical treatment of irrigation water.

See the link bellow

http://magazine.nurserymag.com/article/october-2017/successful-sanitation.aspx

5 Dec 2017

Modeling Global Warming Potential, Variable Costs, and Water Use of Young Plant Production System Components Using Life Cycle Assessment

Ingram, D.L., Knight, J. (University of Kentucky), and C.R. Hall (Texas A&M University)

The components for two production systems for young foliage plants in 72-count propagation trays were analyzed using life cycle assessment (LCA) procedures. System A was modeled as a gutter-connected, rounded-arch greenhouse without a ridge vent and covered with double-layer polyethylene and plants were fertigated through sprinklers on stationary benches.  System B was modeled as a more modern gutter-connected, Dutch-style greenhouse using natural ventilation, and moveable, ebb-flood production tables. Generally, the more modern greenhouse in System B was more efficient in terms of space utilization for production, heating and cooling, fertilization, and water use. While overhead costs were not measured, these differences in efficiency would also help to offset any increases in overhead costs per square foot associated with higher-cost, more modern greenhouse facilities.

HortScience 52 2017 (358 KB)

20 Nov 2017

Oxygenation of Irrigation Water for Bedding Plants

Erin Yafuso and Paul Fisher (University of Florida)

This presentation was part of the American Society for Horticultural Science annual conference. This study evaluated whether injection of purified oxygen (oxygenation) of irrigation water to a super-saturated level affected plant growth during mist propagation of unrooted cuttings and subsequent growth in containers. 

You can watch the video here:

https://youtu.be/DRGjmHX5-yI

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