This articlte compares frass, to mineral fertiliser, and a 50/50 combination of the two. It then delves into chemical analysis and leeching.
Frass: Mineralisation
Full article
https://www.nature.com/articles/s41598-020-61765-x
Reference
(Houben, et al. 2020)
Houben, D., Daoulas, G., Faucon, M. P., & Dulaurent, A. M. (2020). Potential use of mealworm frass as a fertilizer: Impact on crop growth and soil properties. Scientific Reports, 10(1), 4659–4659. https://doi.org/10.1038/s41598-020-61765-x
This article is open source, so hopefully I haven't made any IP infringements.
