Gail Ruhl

ruhlg@purdue.edu

2 articles by this author

Turf Tips List

Imprelis Herbicide Injury: 2011 PPDL ‘Host’ List

We have received questions pertaining to susceptibility of plants to Imprelis. We do not have a list of “susceptible vs. not susceptible” plants because we do not know exactly which plants might be affected under certain growing conditions. However, based on our experience in the PPDL this past summer the list below contains the names…Read more about Imprelis Herbicide Injury: 2011 PPDL ‘Host’ List[Read More]

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Herbicide damage on Spruce and Pine

The Plant and Pest Diagnostic Lab (PPDL) has recently received several samples of Norway spruce and white pine with symptoms that appear to be associated with injury caused by synthetic auxin (growth regulator type) herbicides. Typical off-target symptoms caused by these herbicides can include epinasty (twisting and curling) of the shoot and tips (Fig. 1)…Read more about Herbicide damage on Spruce and Pine[Read More]

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