This article was updated at 8:00 pm on October 30, 2020 and reflects updated information in Table 1.
Labels for XtendiMax, Engenia, and Tavium were granted unconditional Section 3 labels on October 27, 2020. The labels will be effective until 2025. Some details are still being confirmed, but information in Table 1 below has been confirmed by labels and/or company representatives. The registration notice and labels can be accessed by clicking the name of each product in the table.
Table 1. Summary of labels for over-the-top dicamba applications. Table created by Sarah Lancaster, K-State Research and Extension.
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Application cutoff |
Through June 30 or R1 soybean Through July 30 in cotton |
Through June 30 in soybean Through July 30 in cotton |
Through June 30 or V4 soybean Through July 30 or 6-leaf cotton |
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Drift reduction adjuvant |
Required |
Not required/depends on tankmix |
Required |
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Volatility reduction agent |
Required |
Required |
Required |
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Downwind buffer |
240 ft (110 ft with approved hooded sprayer) |
240 ft (110 ft with approved hooded sprayer) |
240 ft (110 ft with approved hooded sprayer) |
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Forecast |
48 hours no runoff producing event |
48 hours no runoff producing event |
48 hours no runoff producing event |
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Training |
Updated every other year |
Updated every year |
Updated every other year |
As before, each company will maintain a website that lists approved hooded/shielded sprayers, spray nozzles, and tank-mix partners. Those websites are:
XtendiMax: www.xtendimaxapplicationrequirements.com
Engenia: www.engeniatankmix.com
Tavium: www.taviumtankmix.com
The EPA also issued a clarification limiting the use of Special Local Needs (Section 24(c)) labels to add additional state-specific restrictions. At this time, it is unclear if the Kansas Department of Agriculture will seek any modifications to the federal label.
In a recent survey, 56% of producers indicated they will plant dicamba-resistant soybeans in 2021, down from 78% who reported planting dicamba-resistant soybeans in 2020. A potential increase in non-dicamba-tolerant soybeans for 2021 highlights the need for extra care when making in-crop dicamba applications.
Sarah Lancaster, Extension Weed Science Specialist
slancaster@ksu.edu
Tags: dicamba label requirements