Abstract:
Biopore infiltration hole are hole made for run-off flow which if allowed to cause erosion and
can remove the topsoil, causing soil fertility to be reduced. The use of biopori infiltration holes
can be maximized by adding organic matters into the hope that in addition to absorbing water
it can increase soil fertility. The liquid waste of tofu and meranti litter is an organic matters are
used in this study, by adding organic matters to the biopori hole. This study aims to look at the
effect of providing organic matters in the biopore hole derived from tofu and litter liquid waste
on the value of pH, C-Organic, and post-mining CEC. This study was an experimental study in
the field using a completely randomized design of one factor, namely organic matters with six
levels, namely without organic matters and using 25 g, 50 g, 75 g, and 100 gr organic matters
given to the biopori hole in incubation for one month later Soil samples taken were analyzed
for pH, C-organic, and CEC. The results showed that the treatment only affected the soil's pH
value. Organic material provided in the biopori hole is thought to have not completely
decomposed, causing the soil around the biopori infiltration hole to remain acidic. The acidity
of the soil is due to the gases produced during the decomposition process. Changes in soil pH
ranged from 4.36 to 4.65 by administering 75g of organic matters from tofu liquid waste and
meranti litter. This research is useful in post-mining land reclamation in increasing soil fertility,
with the improvement of soil chemical properties such as pH will slowly improve the physical
and biological properties of the soil so that it can be used as cultivation land.
