Landscape Contractor / Design Build Maintain

JAN 2016

LC/DBM provides landscape contractors with Educational, Imaginative and Practical information about their business, their employees, their machines and their projects.

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This is a great idea that can transform low maintenance gardens. Non-biodegrading weed barriers are a real problem once they begin to deteriorate. Their remnants are an eyesore and hazard. Good suggestions. There are others too, of course. Main thing: make a plan, a de- sign. Don't just stick plants in in a polka-dot fashion. Group the plants. Don't be afraid of mulch or DG (decomposed granite) among plants. It doesn't all have to be green. Lindsay Mugglestone commented on the article "Why Waste Water on Under Performing Plants?" which reported on a new initiative to reduce water use by selectively removing thirsty, under-performing plants and replacing them with water-wise overachievers: Of the article "Disappearing Mulch Bag Earns Innovation Award," Lankford Associates wrote ( http://www.landscapeonline.com/research/article.php/27468 ): 8 LC DBM I n f o r m a t i o n R e q u e s t # 4 3 1 From the Editor In the November issue of LC/DBM, proper credit was not given in a number of in- stances in the article, "For the Love of Lighting." Nearly all the products written about and pictured were from VOLT Lighting. Stephen Parrott, who took the photos, is the communications director at VOLT, which owns the copyright on the photos and granted us permission to use them, including the cover shot. The article "Bee-Safe Pesticide: Tests Conducted by Manufacturer to Prove Non-toxicity," elicited these reactions: This minimal toxicity testing proves nothing definitive about toxicity to bees or other beneficial insects. The neonic manufacturers argued they were safe too...but after hun- dreds of INDEPENDENT research studies, the effects have been shown to be devastating. The chronic and non-lethal effects can be totally devastating to social insects, making hives dysfunctional even though not lethal in such short time spans as 96 hour LD 50 tests. Even the EPA admits that such tests are invalid for such species. Combinatorial ef- fects with other toxins and effects of the so-called "inerts" applied in actual formulations of pesticides are simply not assessed with standard protocols. The so-called science used to assess whether a pesticide can be registered is not science at all. - Rich Andrews The real problem is NOT adult bees. Alter the bacteria in the hive and larva will die en masse. Reduced numbers of replacement bees, and they (hives) will be in trouble. Killing brood is far more damaging to overall hive survivability. - Jeff Anderson, commercial beekeeper There is great information from full-scale load testing on permeable pavers completed last year at UC Davis. Hydrological flow studies at the University of Missouri are also providing new insight on paver infiltration. In addition, Florida Gulf Coast University, UNH and several Canadian studies have addressed sedimentation, maintenance and cold weather per - formance. If anyone would like more information on these studies, feel free to email me at: kevin.earley@oldcastle.com . - Kevin Earley Readers should know that the 'myths' written about in the article have been clearly addressed in industry literature, university research reports and in design manuals produced by the Interlocking Concrete Pavement Institute (ICPI) and the Ameri - can Society of Civil Engineers (ASCE). This informa- tion can be easily accessed through the ICPI website at www.icpi.org . Permeable interlocking concrete pavements are a functional and cost effective way to handle rainwater/stormwater but must be de - signed, specified and constructed properly just like any other system. Permeable interlocking concrete pavements are not 'mythical' but an engineered sys - tem based in data and science. - David M. Quinn "Challenging the Myths of Permeable Pavement" received a number of responses including: COVER PHOTO: VOLT LIGHTING Email the editor at mdahl@landscapeonline.com Fill in the comment box at the bottom of any article at LandscapeOnline.com Send a letter to: LC/DBM Editor, 14771 Plaza Dr., Suite M, Tustin, CA 92780 · · · To Submit Your Comments: ( http://www.landscapeonline.com/research/article.php/27723 ) ( http://www.landscapeonline.com/research/article.php/27705 ) ( http://www.landscapeonline.com/research/article.php/28055 ) Readers Respond

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