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ARS Home » Southeast Area » Fort Pierce, Florida » U.S. Horticultural Research Laboratory » Citrus and Other Subtropical Products Research » Research » Publications at this Location » Publication #350136

Research Project: Integrated Strategies for Managing Pests and Nutrients in Vegetable and Ornamental Production Systems

Location: Citrus and Other Subtropical Products Research

Title: Evaluation of Dominus® (allylisothiocyanate) for tomato and pepper production

item Rosskopf, Erin
item Hong, Jason
item Burelle, Nancy
item Pisani, Cristina
item DI GIOIA, FRANCESCO - University Of Florida
item JONES, JEFF - University Of Florida
item BOOKER, BRADLEY - Pacific Ag Research, Inc
item KEELY, MARK - Pacific Ag Research, Inc
item AGLAVE, BALAJI - Pacific Ag Research, Inc
item YATES-YARBROUGH, STEPHANIE - Pacific Ag Research, Inc
item SANCES, FRANK - Pacific Ag Research, Inc

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 2/5/2018
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Dominus® (Isagro, USA), a newly registered biofumigant in the United States with active ingredient allylisothiocyanate (AITC), is currently under evaluation for use as a pre-plant soil treatment for both conventional and organic crop production. Recent field trials established root-knot nematode control in ornamental crops with Dominus was equivalent to that achieved with methyl bromide, but weed control was inadequate. A series of factorial field trials were conducted to evaluate weed and disease control in which Dominus was compared to an experimental formulation of organic acids and an untreated treated check with and without registered herbicides for tomato and pepper production. Application of the biofumigant (280 l/ha) resulted in significantly lower incidence of bacterial wilt (Ralstonia solanacearum) of tomato and soil populations of root-knot nematodes (Meloidogyne spp.). There was no significant improvement in weed control with soil treatments, but both fomesafen and halosulfuron herbicides were effective, regardless of fumigant application. Yields of both pepper and tomato were greatest from the Dominus-treated plots. Combining Dominus with an herbicide provided broad-spectrum control of pathogens and weeds. The active ingredient AITC has long been known as a potential biofumigant and the availability of a commercial formulation that can be combined with labeled herbicides provides another tool in a dwindling toolbox.