Yissum Research Development Company of the Hebrew University of Jerusalem Ltd.

Uri Gerson

Abraham Sztejnberg

Aviva Gafni

Zohar Kerem

Izhak Bilkis

Zahi Paz

Provided are pesticidal compositions comprising 4,5-dihydroxyindan-1-one or derivatives thereof for protecting important crops against mites, fungi, and bacteria. The compositions may be manufactured by fractionating fungal extracts.

Pesticidal compositions comprising 4,5-dihydroxyindan-1-one

The present invention describes substantially pure cultures of three new species of fungi,(CBS 110052),(CBS 110053) and(CBS 110050) (all nom. prov.), wherein said cultures are biologically pure. The conditioned medium for all three new fungi species is also described, as well as their biologically active products. The biological product of the three new fungi species and their conditioned medium has miticidal and fungicidal activities. Thus, a composition for the control of mites and/or phytopathogenic fungi comprising a biocontrol agent derived from any one of the three new fungi species is also described, optionally comprising an agriculturally compatible carrier. Finally, the present invention describes a method for producing a fungicide and/or a miticide, wherein the active ingredient of said fungicide/miticide is any one of, or, or any combination thereof, and/or a culture thereof, and/or any product or derivative thereof, comprising culturing said fungus and optionally isolating said active ingredient from the culture.

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Rehovot, Israel

Uri Gerson