Grichar, W. James and McGinty, Joshua A. (2024) Evaluating Herbicide Programs for Effective Weed Control in South Texas Peanut (Arachis hypogaea L.) Production. In: Current Research Progress in Agricultural Sciences Vol. 3. BP International, pp. 34-54. ISBN 978-93-48006-30-1
Full text not available from this repository.Abstract
Aims: To evaluate peanut tolerance and weed efficacy with various peanut herbicide programs.
Study Design: Randomized complete block.
Place and Duration of Study: Field studies were conducted during the 2018, 2021, and 2022 growing seasons in the south Texas peanut growing region.
Methodology: A weed-free study was conducted in 2018 to evaluate crop safety while in 2021 and 2022 weed efficacy trials were conducted. The weed-free study was taken to yield; however, the weed efficacy studies were not.
Results: No noticeable peanut injury with any herbicide program was noted in 2018; however, paraquat + imazethapyr applied at cracking produced the lowest yield. In the 2021 and 2022 studies, peanut stunting was noted with all herbicide systems which included paraquat. Amaranthus palmeri control was > 95% with pendimethalin + flumioxazin + S-metolachlor applied preemergence or any herbicide systems that included S-metolachlor + 2,4-DB applied postemergence. Pendimethalin alone provided 83% control of Urochloa texana while herbicide systems that contained multiple herbicides provided > 90% control. Similar results were seen with Cucumis melo. Ipomoea hederacea L. required the use of multiple herbicides to provide effective control. Pendimethalin alone or paraquat + pyroxasulfone provided <70% control while systems which included pendimetahlin + either S metolachlor, the premix of carfentrazone + pyroxasulfone, or imazapic provided 100% control.
Conclusion: These studies indicate that grower concerns about peanut injury are largely unfounded as only paraquat-containing herbicide systems consistently resulted in any stunting. The premix of carfentrazone + pyroxasulfone caused leaf burn; however, peanuts recover quickly with no yield reduction. Although the premix of carfentrazone + pyroxasulfone systems provided excellent control of U. texana, typically this combination does not effectively control large-seeded annual grasses. Other herbicide systems which included pendimethalin plus either S-metolachlor, flumioxazin + S-metolachlor, dimethenamid, or imazapic provided excellent weed control. These herbicide systems offer growers another option to help provide season-long weed control in the southwestern US peanut production areas.
Item Type: | Book Section |
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Subjects: | STM Library Press > Agricultural and Food Science |
Depositing User: | Unnamed user with email support@stmlibrarypress.com |
Date Deposited: | 09 Sep 2024 06:25 |
Last Modified: | 09 Sep 2024 06:25 |
URI: | http://journal.scienceopenlibraries.com/id/eprint/1979 |