The correlation between phase formation and the structure of the pellets with the fungal immobilization study as a commercial substrate culture/planting material

Calcined clay pellets are popular planting material for those who love to grow plants in pots. The calcined consist of (C), phosphate rock (PR), and rice husk ash (RHA). [(1-x)(50C–50PR)-xRHA], x(RHA) = 0, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65 wt% were prepared by a conventional solid-state reaction method. samples made into spherical shape with diameter 10 mm fired at 600℃ 1000℃. effect x contents on phase formation, microstructure, chemical properties [(1-x)(50C–50PR)-xRHA] was studied. X-ray diffraction revealed the typical assemblages quartz, illite, kaolinite all samples. SEM images showed irregular packing highly porous microstructure. addition results microstructure surface area pore volume increased from 8.83 m2·g-1 14.71 0.938 cm3·g-1 0.942 cm3·g-1, respectively, increase x(RHA). density slightly decreased 2.45±0.06 g·cm-3 1.94±0.05 g·cm-3, an contents. capability immobilize plant growth-promoting fungi then that orchid endophytes, as fungi, well saturated potato dextrose broth (PDB). Besides, can live stay viable least 35 days after inoculation. These suggested could serve enhances growth (via its nutrients fungi) simultaneously.