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Web URL(s): | http://www.wsweedscience.org/wp-content/uploads/2021-Proceedings-WSWS-Corrected.pdf#page=29 Last checked: 06/30/2022 Requires: PDF Reader Notes: Item is within a single large file |
Publication Type:
| Report |
Content Type: | Abstract or Summary Only |
Author(s): | Spring, John F.;
Affeldt, Richard P. |
Author Affiliation: | Spring: Central Oregon Agricultural Research & Extension Center, Oregon State University, Madras, OR; Affeldt: Central Oregon Seed Inc., Madras OR |
Title: | Sulfosulfuron for control of roughstalk bluegrass in Kentucky bluegrass seed crops |
Section: | Poster session Other records with the "Poster session" Section
WSWS Project 3. Weeds of agronomic crops Other records with the "WSWS Project 3. Weeds of agronomic crops" Section
|
Meeting Info.: | March 1-4, 2021 |
Source: | Western Society of Weed Science Annual Meeting 2021. Vol. 74, March 2021, p. 17. |
Publishing Information: | Westminster, Colorado: Western Society of Weed Science |
# of Pages: | 1 |
Abstract/Contents: | "Primisulfuron has been critical for control of the important seed contaminant roughstalk bluegrass in Kentucky bluegrass grown for seed but is not currently available. Over the 2020 crop year, sulfosulfuron was evaluated for this use in small plot-field trials (randomized complete block design, 4 replicates, individual plot size 3 x 9 m) at 4 locations in new seedlings of irrigated Kentucky bluegrass in central Oregon. Sulfosulfuron was applied in the fall only (13, 20, 40 g ai ha-1), spring only (13, 20, 40 g ai ha-1), and fall + spring split applications (13 + 13, 20 + 20, 13 + 20, 20 + 13 g ai ha-1), compared to the industry standard use of primisulfuron (fall + spring split application of 20 + 20 g ai ha-1). Fall-only applications of sulfosulfuron provided crop safety and seed yield equivalent to the industry standard primisulfuron, while spring-only and fall + spring split applications had unacceptably high crop injury (mean injury > 20%) at early boot stage, and slightly reduced seed yield (3 to 5%) in well-managed fields. Split applications at all but the lowest rate gave acceptable control of roughstalk bluegrass (95 to 96%) relative to the standard primisulfuron (91%), as did fall-only sulfosulfuron at 40 g ai ha-1 (98%). Fall-only sulfosulfuron at 20 g ai ha-1 and the split of 13 g ai ha-1 in both fall + spring gave intermediate control (84 and 82%, respectively). Spring-only applications gave poor control at all rates (40 to 44%), as did fall-only sulfosulfuron at 13 g ai ha-1 (56%). When applied in the fall at 40 g ai ha-1, and possibly at 20 g ai ha-1, sulfosulfuron offers a viable alternative to primisulfuron for control of roughstalk bluegrass in Kentucky bluegrass seed production." |
Language: | English |
References: | 0 |
Note: | This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Spring, J. F., and R. P. Affeldt. 2021. Sulfosulfuron for control of roughstalk bluegrass in Kentucky bluegrass seed crops. Proc. West. Soc. Weed Sci. 74:p. 17. |
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| Web URL(s): http://www.wsweedscience.org/wp-content/uploads/2021-Proceedings-WSWS-Corrected.pdf#page=29 Last checked: 06/30/2022 Requires: PDF Reader Notes: Item is within a single large file |
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