Landscape Contractor / Design Build Maintain

MAR 2018

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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56 LC DBM A web-based app that determines the amounts of fertilizer to use in an injection system was released by Dr. Geoff Denny at Mississippi State University. Four variables: desired concentration (PPM N); injector dilution ratio; fertilizer analy - sis (% N); and stock solution value, are entered into the digital calculator and it then figures out how much water soluble fertilizer should be added to a stock solution for injection applica - tions. A phone application, called Leaf Doctor, devel- oped by researchers at the University of Hawaii as a convenient, easy to use tool to diagnose prob - lems with a specific plant, was just recently made available for free on Apple, Android and Google devices. Taking a photo of a leaf will give you information on that plant's problems. To explore what natural and man - made chemicals honeybees seek when foraging, researchers at the University of Illinois presented them with two options: sugar syrup mixed with a control substance and sugar syrup mixed with either one of nine natu - rally occurring chemicals, or one of five pesticides, at various concentrations. Surprisingly, the bees were attracted to syrups with low levels of glyphosate and chlorothalonil – a result the researchers concluded may be because the chemicals signal a new food source for them. Fertilizer Injection Simplified App Helps Diagnose Plant Diseases Honeybees Attracted to Fungicides? I n f o r m a t i o n R e q u e s t # 4 9 3

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