@article{meeks_cabrera_thapa_noor_mirsky_reberg-horton_2023, title={Biochemical composition of cover crop residues determines water retention and rewetting characteristics}, volume={9}, ISSN={["1435-0645"]}, url={https://doi.org/10.1002/agj2.21451}, DOI={10.1002/agj2.21451}, abstractNote={Abstract}, journal={AGRONOMY JOURNAL}, author={Meeks, Carley and Cabrera, Miguel and Thapa, Resham and Noor, Nadia and Mirsky, Steven and Reberg-Horton, Chris}, year={2023}, month={Sep} } @article{thapa_cabrera_schomberg_reberg-horton_poffenbarger_mirsky_2023, title={Chemical differences in cover crop residue quality are maintained through litter decay}, volume={18}, ISSN={["1932-6203"]}, url={https://doi.org/10.1371/journal.pone.0289352}, DOI={10.1371/journal.pone.0289352}, abstractNote={As plant litter decomposes, its mass exponentially decreases until it reaches a non-zero asymptote. However, decomposition rates vary considerably among litter types as a function of their overall quality (i.e., carbon:nitrogen (C:N) ratio and litter chemistry). We investigated the effects of hairy vetch (HV: Vicia villosa Roth):cereal rye (RYE: Secale cereale L.) biomass proportions with or without broadcasted poultry manure on overall litter quality before and during decomposition. As HV biomass proportions increased from 0 to 100%, the relative susceptibility of HV:RYE mixtures to microbial decomposition increased due to: (i) decrease in the initial C:N ratio (87:1 to 10:1 in 2012 and 67:1 to 9:1 in 2013), (ii) increase in the non-structural labile carbohydrates (33 to 61% across years), and (iii) decrease in the structural holo-cellulose (59 to 33% across years) and lignin (8 to 6% across years) fractions. Broadcasted poultry manure decreased the overall initial quality of HV-dominated litters and increased the overall initial quality of RYE-dominated litters. Across all HV:RYE biomass proportions with or without poultry manure, chemical changes during litter decay were related to proportional mass loss. Therefore, the relative decrease in carbohydrates and the concomitant increase in holo-cellulose and lignin fractions were more pronounced for fast decomposing litter types, i.e., litters dominated by HV rather than RYE. While our results suggest possible convergence of litter C:N ratios, initial differences in litter chemistry neither converged nor diverged. Therefore, we conclude that the initial chemistry of litter before decomposition exerts a strong control on its chemical composition throughout the decay continuum.}, number={7}, journal={PLOS ONE}, author={Thapa, Resham and Cabrera, Miguel and Schomberg, Harry H. and Reberg-Horton, Chris and Poffenbarger, Hanna and Mirsky, Steven B.}, editor={Villalobos, Luis AlonsoEditor}, year={2023}, month={Jul} } @article{mirsky_davis_poffenbarger_cavigelli_maul_schomberg_spargo_thapa_2023, title={Managing cover crop C:N ratio and subsurface-banded poultry litter rate for optimal corn yields}, ISSN={["1435-0645"]}, DOI={10.1002/agj2.21369}, abstractNote={Abstract}, journal={AGRONOMY JOURNAL}, author={Mirsky, Steven B. and Davis, Brian W. and Poffenbarger, Hanna and Cavigelli, Michel A. and Maul, Jude E. and Schomberg, Harry and Spargo, John T. and Thapa, Resham}, year={2023}, month={Jun} } @article{singh_thapa_kukal_irmak_mirsky_jhala_2022, title={Effect of water stress on weed germination, growth characteristics, and seed production: a global meta-analysis}, ISSN={["1550-2759"]}, DOI={10.1017/wsc.2022.59}, abstractNote={Abstract}, journal={WEED SCIENCE}, author={Singh, Mandeep and Thapa, Resham and Kukal, Meetpal Singh and Irmak, Suat and Mirsky, Steven and Jhala, Amit J.}, year={2022}, month={Oct} } @article{thapa_cabrera_reberg-horton_dann_balkcom_fleisher_gaskin_hitchcock_poncet_schomberg_et al._2022, title={Modeling surface residue decomposition and N release using the Cover Crop Nitrogen Calculator (CC-NCALC)}, volume={8}, ISSN={["1573-0867"]}, DOI={10.1007/s10705-022-10223-3}, journal={NUTRIENT CYCLING IN AGROECOSYSTEMS}, author={Thapa, Resham and Cabrera, Miguel and Reberg-Horton, Chris and Dann, Carson and Balkcom, Kip S. and Fleisher, David and Gaskin, Julia and Hitchcock, Rick and Poncet, Aurelie and Schomberg, Harry H. and et al.}, year={2022}, month={Aug} }