Davis, Calif.-based AgraQuest has added the biological soil fungicide Bio-Tam to its product line-up.

The fungicide, which contains a combination of Trichoderma asperellum and Trichoderma gamsii, was developed through a partnership with Isagro SpA, based in Milan, Italy, according to a news release.

Under the arrangement, AgraQuest will market the product to conventional agricultural crops.

The product is registered for use in all states but Alabama and Massachusetts, where registrations are pending, said Ken Phelps, AgraQuest North American marketing manager.

SipcamAdvan will market the beneficial fungal mixture as Tenet in the turf and ornamental markets.

The two Trichoderma species are considered antogonist fungi.

Bio-Tam is labeled for use on a wide array of crops, including cucurbits, leafy vegetables, berries, trees and vines, tree nuts, and root and tuber vegetables.

The Trichoderma mixture controls several root and collar rot diseases caused by Phytophthora, Rhizoctonia, Armaillaria, Thielaviopsis, Verticillium, Pythium and Sclerotnia, according to a product technical sheet.

For best results, AgroQuest recommends applying Bio-Tam to the soil five to seven days before planting to allow the fungal organisms to colonize the soil.

The company also recommends at least two applications for best results.