June 2012 Newsletter (vol.8)   >>   The Next Generation of Rootshield

Rootshield Plus Image


BioWorks has announced the arrival of RootShield PLUS+, the next generation of Rootshield Biological Fungicide.  Just like RootShield, Rootshield PLUS+ controls Rhizoctonia, Fusarium, Pythium, Thielaviopsis and Cylindrocladium by inhibiting and actively attacking pathogens; ensuring uninterrupted plant growth.  RootShield PLUS+ has two active ingredients -Trichoderma harzianumstraub T-22 (which is in the original RootShield) as well as the additional Trichoderma virens strain G-41.  The new RootShield PLUS+ provides preventative control of soil borne Phytophthora which the original formulation was not labeled for, and has improved control of hot-season Pythium (P. aphanidermatum). 

“RootShield PLUS+ provides the same strong root protection for three months per application, and extended prevention of root disease including Phytophthora, a serious threat to many growers,” says John Francis, BioWorks Director of Technical Services.  “It is a very beneficial addition to our extended RootShield product line and still costs less than two cents per 6-in pot.”

RootShield PLUS+ is available in granules or wettable powder (WP) formulations.  RootShield PLUS+ Granules have a 0-hour Restricted Entry Interval (REI) and 0-day Pre-Harvest Interval (PHI).  RootShield PLUS+ WP has a 0-hour REI when drenched into potted crops and potting media, 4-hour REI when used as a dip or dust, and a 0-day PHI. 

Although the product was granted EPA registration in February, registration is still pending for a few states. Visit www.bioworksinc.com/RSPLUS for updated listing of approved states and additional product information.  OMRI submission is pending. Contact your local Hummert International sales rep for more information.   


Pythium root and stem rot can occur any time during poinsettia propagation or production, as it spreads easily by water. Rootshield can help! Check out this link for a testimonial and more information. http://www.gpnmag.com/pythium-and-poinsettias