WED, APR 24 2024
12:07:20
- Author: Mark Bolda
Published on: July 4, 2009
Under current regulatory pressure for eradication of light brown apple moth, local caneberry growers have been striving to maximize leafroller control to the greatest extent possible. The pesticide Confirm 2F, which has excellent efficacy on leafrollers while having little activity on non-lepidopterous insects, has become a point of interest. It is worth the while to discuss the use of this material, along with a comparison to the related, but unregistered in caneberries, Intrepid 2F.
It should be emphasized that while Confirm 2F has excellent leafroller control characteristics, the label is restrictive in that the required interval between application and harvest (also known as the “pre-harvest interval” or PHI) in caneberries is 14 days, meaning harvest season applications without the loss of crop are not possible.
Additionally, since Confirm 2F needs to be ingested by leafroller larvae to realize the highest efficacy, uniform and thorough coverage in the field is essential. Use of high per acre rates of water carrier, high application pressure and spreader sticker adjuvants are all recommended as a way of increasing the effectiveness of this material.
Intrepid can be thought of an upgrade of Confirm, and is generally more efficacious,
as it has longer residual activity against some pests. In crops where it is currently
registered, Intrepid has a fairly short pre-harvest interval. For example, the preharvest
interval for Intrepid is one day in strawberries, versus 14 days for Confirm in caneberries.
With this in mind, it will be worth pursuing an Intrepid label similar to strawberries in
caneberries. Replacing Confirm with Intrepid for most crop uses is a worthy goal.
There are pesticides mentioned for management of leafrollers in this article. Before using any of these products, check with your local Agricultural Commissioner's Office and consult product labels for current status of product registration, restrictions, and use information.
SUMMARY: This regulation establishes tolerances for residues of methoxyfenozide in or on citrus oil and fruit, citrus, group 10
with regional registrations; and corn, pop, grain; corn, pop, stover; pea, dry seed; and pomegranate. The Interregional Research Project No. 4 (IR-4) requested these tolerances under the Federal Food, Drug, and Cosmetic Act (FFDCA).
DATES: This regulation is effective September 2, 2009. Objections and requests for hearings must be received on or before November 2, 2009, and must be filed in accordance with the instructions provided in 40 CFR part 178 (see also Unit I.C. of the SUPPLEMENTARY INFORMATION).