Location: Subtropical Plant Pathology Research
2013 Annual Report
Two strawberry trials were conducted at the Florida Strawberry Growers Association Dover Research Farm. These trials included five treatments: Untreated Check, two rates of the experimental material SPK applied through drip lines, InLine® (Dow AgroSciences, 1,3-dichloropropene:chloropicrin, as the commercial standard), and the best non-chemical standard developed in a recently completed project. Treatments were replicated four times. The In-Line and SPK applications were performed using a standard drip application system developed by Dr. Joe Noling. The first season strawberry field trial was established in October 2010 and was completed in May 2011. The second season trial was established in September 2011 and was completed in March 2012. Generation of volatile organic compounds (VOCs) was monitored immediately after treatment, 24 hours, and one week after treatment. No VOCs were detected in any of the SPK-treated plots. Plots treated using a shank application of the high rate of SPK remained at a low pH for significantly longer than plots with the same rate applied through drip irrigation. There was a total of 23 picks for each strawberry season harvest. Total weight of fruit was numerically lowest in the UTC and anaerobic soil disinfestations (ASD) plots; however there were no statistically significant differences among any treatment in the first year. Improvements in crop nutrition in the second strawberry season resulted in the highest yield occurring in ASD-treated plots.