Starch-Grafted Sodium Alginate-Modified Clay Composites as Environmentally Controlled-Release Materials for NPK Fertilizer

<div>FTIR spectra of pure starch (a), pure sodium alginate (b), pure NPK (c), ST-g-SAG/NPK (d), ST-g-SAG/Ca-MMT(3%)/NPK (e), ST-g-SAG/Ca-MMT(5%)/NPK (f), ST-g-SAG/Ca-MMT(10%)/NPK (g), and pure Ca-MMT (h).</div>

Applied and Environmental Soil Science

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Figure 2

Figure 2: Starch-Grafted Sodium Alginate-Modified Clay Composites as Environmentally Controlled-Release Materials for NPK Fertilizer 