Skip to main content
ARS Home » Southeast Area » Fort Pierce, Florida » U.S. Horticultural Research Laboratory » Citrus and Other Subtropical Products Research » Research » Research Project #440476

Research Project: Soil Amendment Effects on Tomato Bacterial Spot

Location: Citrus and Other Subtropical Products Research

Project Number: 6034-22000-043-027-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Sep 1, 2021
End Date: Aug 31, 2022

Objective:
The objective of this NACA is to determine the effect of anaerobic soil disinfestation (ASD) and other organic amendments on a foliar tomato disease. In a randomized, replicated field study, it was observed that plants grown in ASD treated soil experienced a lower incidence of bacterial spot on tomato. The objective of this project is to determine if this phenomenon occurs consistently through replicated testing and observation in a greenhouse controlled environment. Additionally, soil will be sampled post Xanthomonas spp. inoculation to determine if treated soil is detrimental to pathogen survival in soil.

Approach:
Tomatoes will be grown under greenhouse conditions in amendment-treated and non-treated soil and inoculated with Xanthomonas spp., and then observed until plants begin to fruit. The plants will be rated weekly for disease. Soil samples will be taken post inoculation, a week post inoculation, and at the end of the studies to determine if soil treatment affects pathogen survival.