De Long JR, Heinen R, Hannula E, Jongen R, Steinauer K, Bezemer M (2022) Plant-litter-soil feedbacks in common grass species are slightly negative and only marginally modified by litter exposed to insect herbivory. Plant and Soil. https://doi.org/10.21203/rs.3.rs-1403298/v1. Litter and response species: fast (Arrhenatherum elatius, Holcus lanatus, Lolium perenne) and slow (Agrostis capillaris, Deschampsia flexuosa, Festuca ovina) Exposed to aboveground herbivores (M. brassicae), belowground herbivores (Agriotes spp.), both or none (control) Litter was then used in the second litter feedback phase of the experiment Data here are carbon, nitrogen, total polyphenols obtained from dried, ground root and shoot litter and micronutrients from dried, ground root litter Response plant species measurements: grams dry weight biomass of roots and shoots Quality control was performed to ensure all values were reasonable