Preparation of Microencapsulated Bacillus subtilis SL-13 Seed Coating Agents and Their Effects on the Growth of Cotton Seedlings

Figure 1

Scanning electron micrographs of the PVA-alginate film without microcapsules (a), the PVA-alginate-bentonite film without microcapsules (b), and the PVA-alginate-bentonite film with microcapsules (c and d).

(a)

(b)

(c)

(d)