Abstract:
The use of (NH4)2SO4 fertilizer is vital in increasing plant growth and reducing
the Pb content in soil. This study determined the ability of Codiaeum and
Sansevieria to accumulate Pb due to (NH4)2SO4 fertilization and its effects on
their growth rate. The ammonium fertilizer was applied three days after
repotting according to these treatment levels: 0, 100, and 200 kg N/ha, denoted
as P0, P1, and P2, respectively. The height of Codiaeum decreased by 45.04%,
24.67%, and 13.70% in treatment P0, P1 and P2, respectively, one week after
repotting. The Pb concentrations in Codiaeum decreased with increasing doses
of N fertilizer, while in Sansevieria, Pb concentrations increased with higher
doses of N fertilizer. A reduction in the soil pH was seen with increasing dosage
of N fertilization in Codiaeum, while the pH of the medium with Sansevieria
was stable. Therefore, the effect of the different N doses, which causes a
decrease in soil pH, was more significant in Codiaeum compared with
Sansevieria. Furthermore, the highest value of TF was found in Codiaeum
treated with 200 kg N/ha.
