RootShield WP from BioWorks Inc. is a new and improved formulation of its biological fungicide PlantShield. The wettable powder formulation will not clog drop emitters, drip tape or irrigation booms. RootShiedl WP, which contains the active ingredient Trichoderma harzianum Rifai strain, provides preventive control of major disease pathogens including Pythium, Fusarium, Rhizoctonia, Thielaviopsis and Cylindrocladium. It is registered for use on greenhouse and outdoor produced ornamentals, herbs and vegetables.It has a 0-hour restricted entry interval.