Impact of cover crop termination strategies and roller crimper speeds on cereal rye and weed suppression

Authors: SINGH, AKASHDEEP - Auburn University; RUSSELL, DAVID - Auburn University; Price, Andrew; Kornecki, Ted; Kichler, Corey; MAITY, ANIRUDDHA - Auburn University

Submitted to: Proceedings of Southern Weed Science Society
Publication Type: Abstract Only
Publication Acceptance Date: 1/24/2025
Publication Date: 1/24/2025
Citation: Singh, A., Russell, D., Price, A.J., Kornecki, T.S., Kichler, C.M., Maity, A. 2025. Impact of cover crop termination strategies and roller crimper speeds on cereal rye and weed suppression [abstract]. Southern Weed Science Society, Charleston, SC January 26-29 2025.

Interpretive Summary:

Technical Abstract: Cover crops offer numerous benefits, including nutrient supplementation, soil health improvement, and weed suppression. With various roller crimpers available, this study aims to identify the most effective method for cover crop termination and weed suppression. We investigated the impact of different termination methods and roller crimper speeds on the effectiveness of cereal rye in weed suppression, focusing on mechanisms such as smothering, competition, and allelopathy. The experiment included treatments with different roller types (spiral roller, front/rear roller, and 3-stage roller) at varied speeds, assessing cover crop thickness and density post-termination. Data collection involved periodic weed counts, weed biomass measurements, cover crop biomass before and after termination, and soil sample analysis from three depths. Results indicated that the type and speed of cover crop termination methods significantly affected weed density and cover crop degradation over time, without impacting cotton yield. This study provides insights into optimizing agronomic practices for enhanced weed control.