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ARS Home » Southeast Area » Auburn, Alabama » Soil Dynamics Research » Research » Publications at this Location » Publication #412679
Research Project: Agronomic and Engineering Solutions for Conventional and Organic Conservation Agricultural Systems in the Southeastern U.S.

Location: Soil Dynamics Research

Title: Integration of cover crops and herbicides for weed control in peanut

Author
item KUMARI, ANNU - Auburn University
item CHAHAL, GOURAV - Auburn University
item Price, Andrew
item KORRES, NICHOLAS - University Of Ioannina
item GAMBLE, AUDREY - Auburn University
item LI, STEVE - Auburn University

Submitted to: American Society of Agronomy
Publication Type: Abstract Only
Publication Acceptance Date: 5/13/2023
Publication Date: 10/29/2023
Citation: Kumari, A., Chahal, G., Price, A.J., Korres, N.E., Gamble, A., Li, S. 2023. Integration of cover crops and herbicides for weed control in peanut [ABSTRACT]. American Society of Agronomy, St Louis, MO, Oct 29-Nov 1 2023.

Interpretive Summary:

Technical Abstract: A field study conducted in Alabama at the Wiregrass Research and Experiment Station from 2022-2023 aimed to evaluate the combined effect of cover crop residue and herbicides for weed control and its effect on the yield of Peanut. The experiment was conducted in split plot design with main plots were six cover crop treatments: cereal rye, wheat, radish, mixture, disk + cultivator, and winter fallow. The subplots were four herbicide treatments: 1) Preemergence (PRE) herbicide included flumioxazin + diclosulam, 2) Postemergence (POST) herbicide included ammonium salt of imazapic, 3) PRE followed by POST, and 4) a non-treated check. We found that three weeks after planting (WAP)_cover crops achieved 10-36% weed control, with cereal rye being the most effective at 36%. At six WAP, PRE plus POST herbicide applications had provided adequate weed control of 83-91%, while there was no overall effect of cover crops. However, no significant effect of cover crops and their interaction with herbicide on yield was observed. Moreover, plots treated with both PRE plus POST herbicides had higher yield than all other treatments. In conclusion, integrating herbicides, along with the incorporation of cover crops, such as cereal rye, is an effective weed management approach to control problematic weeds and sustain peanut yield. Future research is needed at multiple locations to provide a clear understanding of the impacts of various cover crops and herbicide treatments on weed control and peanut yield.