Project Number: 5302-13000-011-25
Project Type: Reimbursable

Start Date: Sep 01, 2010
End Date: Aug 31, 2014

Objective:
1) Replace methyl bromide with an alternative fumigant, 2) Reduce the application rates of pre-plant alternative fumigants through a combination of decreased losses by better retention with low permeability films and enhanced sub-surface dispersion by carbonation of the fumigants, and 3) To ascertain the minimum fumigation rate required to be effective in various soils in multiple states with a variety of crops under different tarping techniques.

Approach:
Three field trials will be conducted to collect field data. Targeted cropping systems are deep-rooted perennial tree/ornamental/grapevine orchards or nurseries. Telone and chloropicrin products will be tested in all trials. The first two years will focus on filed trials to determine effective reduced rates of carbonated fumigants. In the third year, a demonstration trial will illustrate those successful fumigation methods in growers’ fields. Emission loss, fumigant distribution (or concentration change over time in soil profile), and efficacy on nematode, pathogen and weed control will all be determined. The expected outcome is an economically feasible alternative to methyl bromide by increasing use efficiency, reducing chemical input and minimizing detrimental impact on the environment. Documents reimbursable with U of FL. (NIFA). Log 41604.