Tag Archive: Kathryn Louis

Trends in Media Mixes

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A Q&A on trends in media mixes, with Sun Gro’s Dan Jacques, Technical Services, and Kathryn Louis, Research & Regulatory Services –    What can you tell me about Sun Gro’s media mixes and components products for greenhouse growers? Sun Gro is the largest supplier of professional growing media in North America.  We also are the… View Article

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A Perlite Primer – The Big White Stuff

Large, coarse perlite alone may not be the best aggregate for a peat-based growing medium. In general, a mix of different sizes is desirable to provide uniformly distributed air spaces and to avoid the negative aspects of the ‘sand & rocks effect’ or in this case the ‘peat and rocks effect.’ How do sand and rocks relate to a growing medium? You’ve probably seen… View Article

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The Truth About Soluble Salts

On a greenhouse visit some time ago, I asked a new grower, “What fertilizer rate are you using?”  To my surprise he replied, “I don‘t know.” I left the greenhouse fairly concerned, but after some contemplation decided that perhaps I shouldn’t be. Why? Because the fertilizer rate a grower provides to a crop is only one component affecting the crop‘s nutritional status. Factors such… View Article

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How Using the Correct Soilless Media Will Help Your Success with Tissue Culture Propagation

Tissue culture (also called “in vitro culture” or “micro-propagation”) is one method of cloning plants that is becoming more and more common. In many ways, it is similar to clonal propagation by cuttings; in each method, part of the plant is removed from a stock plant and after a multiplication stage (in an enclosed, sterile… View Article

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