Fig. 5. Morphology of freeze-dried control and composite hydrogel, at various scales, in the following order: (a) PAA control xerogel; (b) control xerogels with fertilizer, LF-PAA; and (c) composite xerogels with fertilizer, LF-BC-PAA.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.