Joshua Sodium Polyacrylte may be a good material to use - http://en.wikipedia.org/wiki/Sodium_polyacrylate
They can absorb water with micro nutrients and would slowly disintegrate and release the micro nutrients. They are used in agriculture to retain water in soil. regards Bhaskar On Thursday, 28 March 2013 01:47:00 UTC+5:30, Joshua Jacobs wrote: > > However silly, there may be elements of value in musing. > > What if the high-albedo plastic(*) was both imbued with micro-nutrients > and set to degrade at specific rates? Appropriate rates of decay could > ensure that macro-nutrients would not be depleted before the > micro-nutrients. Biological fouling aside, this might be a method to > combine some SRM and CDR at the same time. > > (*) high surface area and low volume spheres much like the glass spheres > mentioned in a much earlier post. > > > -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at http://groups.google.com/group/geoengineering?hl=en. For more options, visit https://groups.google.com/groups/opt_out.