Location: Subtropical Plant Pathology Research
Project Number: 6034-22000-040-07-T
Project Type: Trust Fund Cooperative Agreement
Start Date: Oct 1, 2012
End Date: Jul 22, 2013
1. Develop the methods and protocol for safely delivering effective concentrations of ally isothiocyanate (AITC) to the soil under drip and shank application scenarios. 2. Evaluate the efficacy of AITC under 3 different soilborne pest complexes impacting Florida vegetable and ornamental growers (nutsedge spp. on pepper, clover on cut-flower, sting nematode on strawberry). 3. Measure the effect of AITC on growth and yield of strawberry, pepper, and various cut-flower crops. 4. Determine the soil persistence and degradation of AITC in the vapor and non-vapor phase.
For Phase 1, only drip applications will be evaluated. Each site (strawberry, pepper, and cut-flower) will consist of 3 treatments; 2 rates of ally isothiocyanate (AITC) and the growers alternative fumigant standard. Each plot will be a single row 100 ft in length. Plots will be replicated 4 times and arranged in a randomized complete block design (1,200 linear ft of row total). Bi-weekly assessments of weed populations will be made at each site. Soil nematode populations will be assessed pre-plant, at mid-crop, and harvest. Yield data will be collected. For phase 2 (pepper only) two additional shank applications will be included and additional data on AITC persistence in soil will be collected.