ISCA HOOK Bait and Kill for Spotted Wing Drosophila

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Presentation transcript:

ISCA HOOK Bait and Kill for Spotted Wing Drosophila Mark Bolda UCCE Santa Cruz County February 21, 2019

Why bait and kill?

Vitals Weekly applications of ISCA HOOK bait and kill made on September 6, 13, 20 and 26. Biweekly applications made September 6 and September 20. Rate at 1.5 L per acre. Replicate plots sizes are large; 15,750 ft sq. Material distributed with whisk broom at the base of the hedgerow. Two insecticide applications made during duration of study, once 9/8/2018 and then again on 9/22/2018.

Evaluation A Bug vac operated over 18 feet of row (distance between one set of stakes) from the middle row of the middle tunnel was used to evaluate number of adults per treatment replicate. Larvae and eggs were counted in the salt water test from 5 market maturity fruit which were taken from middle tunnel of each treatment replicate. Sampling for both fruit and adults took place 9/5 (pre-application sample), 9/24, 10/3 and 10/10.

Freshly applied ISCA HOOK, 9/24/2018

ISCA HOOK Oct 10, 2018

Adult SWD per Treatment *

Larvae per five blackberry fruit