The TPRS samples with the dimension of 20mm×50mm were
burial under soil surface of approximately 10 cm. The pH and temperature
of the soil were maintained at 7 and 32±2 ◦C, respectively.
The water content of the soil was in the range of 10–20% and
the weight change was recorded for 21 days. Average percentage
weight change was recorded from three independently tested
samples.