@article{leon_oreja_mirsky_reberg-horton_2023, title={Addressing biases in replacement series: the importance of reference density selection for interpretation of competition outcomes}, volume={10}, ISSN={["1550-2759"]}, url={https://doi.org/10.1017/wsc.2023.53}, DOI={10.1017/wsc.2023.53}, abstractNote={Abstract}, journal={WEED SCIENCE}, author={Leon, Ramon G. and Oreja, Fernando H. and Mirsky, Steven B. and Reberg-Horton, Chris}, year={2023}, month={Oct} }
 @article{mahoney_jordan_leon_oreja_roma-burgos_2023, title={Fecundity and maternal effects on Palmer amaranth height following season-long interference in corn, cotton, and peanut}, volume={9}, ISSN={["2374-3832"]}, url={https://doi.org/10.1002/cft2.20233}, DOI={10.1002/cft2.20233}, abstractNote={Abstract}, number={2}, journal={CROP FORAGE & TURFGRASS MANAGEMENT}, author={Mahoney, Denis J. and Jordan, David L. and Leon, Ramon and Oreja, Fernando H. and Roma-Burgos, Nilda}, year={2023}, month={Dec} }
 @article{oreja_hare_jordan_leon_2023, title={Previous crop and herbicide timing application effects on weed population growth rate}, volume={9}, ISSN={["2374-3832"]}, url={https://doi.org/10.1002/cft2.20232}, DOI={10.1002/cft2.20232}, abstractNote={Abstract}, number={2}, journal={CROP FORAGE & TURFGRASS MANAGEMENT}, author={Oreja, Fernando H. and Hare, Andrew T. and Jordan, David L. and Leon, Ramon G.}, year={2023}, month={Dec} }
 @article{oreja_inman_jordan_vann_jennings_leon_2022, title={Effect of cotton herbicide programs on weed population trajectories and frequency of glyphosate-resistant Palmer amaranth (Amaranthus palmeri)}, volume={7}, ISSN={["1550-2759"]}, url={https://doi.org/10.1017/wsc.2022.41}, DOI={10.1017/wsc.2022.41}, abstractNote={Abstract}, journal={WEED SCIENCE}, publisher={Cambridge University Press (CUP)}, author={Oreja, Fernando H. and Inman, Matthew D. and Jordan, David L. and Vann, Matthew and Jennings, Katherine M. and Leon, Ramon G.}, year={2022}, month={Jul} }
 @article{oreja_inman_jordan_bardhan_leon_2022, title={Modeling weed community diversity based on species population density dynamics and herbicide use intensity}, volume={138}, ISSN={["1873-7331"]}, DOI={10.1016/j.eja.2022.126533}, abstractNote={Herbicide programs change weed population density as well as weed community composition. The repeated use of a given program can result in a weed community that progressively becomes more difficult to manage or could lose its ability to provide ecosystem services. Simulation of those changes using stochastic models considering population dynamics of multiple species makes it possible to identify a priori potential community changes that might result from the use of a given herbicide program. The objectives of this work were to model the population dynamics of weed species under different herbicide programs and how those dynamics change weed community diversity over time. Weed population dynamics were stochastically modeled along ten years using population growth rate (lambda) for each species under different herbicide programs. Lambda values were obtained from an eight-year long, field experiment, and these were used to parameterize the stochastic ranges for the model for each weed species. Population trajectories were modeled for each individual species over ten years and the results were used to estimate richness, diversity, and evenness for each herbicide use scenario. The repeated use of glyphosate alone had a minimal effect on richness, but it caused a strong reduction in weed diversity and evenness. Programs with more mechanisms of action and the use of both preemergence and postemergence herbicides were slightly more likely to suffer the loss of weed species than programs with single or just a few herbicides. Conversely, the former had a higher probability of maintaining weed diversity and evenness than the latter. According to simulations, losses in weed community diversity are reversible, especially when highly competitive species were eradicated allowing other species with lower lambda to increase their populations. However, the eradication of species with low reproductive rates reduced diversity and evenness. The effects of herbicide programs on the weed community lasted for several years even after those programs were modified indicating that seed banks play a major buffering role in the rate of change of weed community composition. Thus, frequent changes in management interrupting the repeated use of specific weed control programs, even under high herbicide intensity use (i.e., number of applications and mechanisms of action), can help maintain weed diversity in agroecosystems.}, journal={EUROPEAN JOURNAL OF AGRONOMY}, author={Oreja, Fernando H. and Inman, Matthew D. and Jordan, David L. and Bardhan, Deepayan and Leon, Ramon G.}, year={2022}, month={Aug} }
 @article{oreja_inman_jordan_leon_2021, title={Population growth rates of weed species in response to herbicide programme intensity and their impact on weed community}, volume={9}, ISSN={["1365-3180"]}, url={https://doi.org/10.1111/wre.12509}, DOI={10.1111/wre.12509}, abstractNote={Abstract}, journal={WEED RESEARCH}, publisher={Wiley}, author={Oreja, Fernando H. and Inman, Matthew D. and Jordan, David L. and Leon, Ramon G.}, year={2021}, month={Sep} }