Aplikasi teknik inaktivasi in situ pada tanah dicemari Pb: keterkaitan antara konsentrasi Pb pada tajuk tomat dengan sifat-sifat kimia tanah

SUMMARY
wartina Subekti. Application of In Silu Inactivation Technique on a Pb-Polluted Soil:
ps between Pb-concentration in Tomato Shoot with Soil Chemical Properties .
der supervision of Syaiful Anwar and Untung Sudadi).

Urban arable land located near industrial area are vulnerable to heavy
a1 pollution. One of these heavy metals of concerned is plumbum (Pb). fil
inactivation is a prospective remediation methods to be applied on heavy
a1 polluted-soil of arable land. This technique refers to the use of ameliorants
fertilizers to alter the chemical forms of heavy metal pollutants in the
, thereby decreasing their chemical and biological ability to cause
In the preceding study, the following were evaluatd (1) the effects of
elioration and fertilization at 4 (four) series of Pb-enriched soils on the soil
ernical properties, including the concentration of bioavailable soil Pb, and the
matter yield of tomato, and (2) the relationships between the soil.chemical
d the tomato dry matter yield. The present study was aimed to
uate: (1) the effects of the same amelioration and fertilization treatment at 4
r) series of Pb-enriched soils on Pb, N, P, S, K, Ca and Mg concentration in
ato shoot, (2) the relationships between Pb concentration in tomato shoot with
chemical properties, including the total and bioavailable soil Pb, and (3) the
between Pb with N,P, S, K, Ca and Mg concentration in tomato


A greenhouse experiment using bdk soil sample of the upper 0-20 cm
m productive arable land in Cileungsi industrial area was conducted
completely randomized design with 3 (three) rates of amelioration and
atrnent (0, SO, and 100 % of the 'recommended dosage for low
de-dryland tomato) at 4 (four) series of Pb-enriched soils [(O, 187.5,375, and
mg Pbkg dry soil using Pb(CH3C00)2.3Hz0] with 3 (three) replications.
recommended dosage applied for commercial tomato cultivation in low
area was: 4 tonha dolomite, 30 tonha cow dung, 150 kg/ha N (%
a + % ZA), 150 kg/ha PzOs (SP-36), and lOOkg/ha KzO (KC1).
The results of this research revealed that increasing' rates of the.
lioration and fertilization treatment from 0 to 100% of.the recommended
e: increased significantly and linearly N, Ca and Mg concentration in tomato
a 1 series of Pb-enriched soils; increased significantly and linearly tomato
ation only at unenriched soil, and S concentration only at 750 mg
g soil series, but decreased significantly and linearly Pb concentration at 375
750 mg Pb/kg soil series. The decrease in Pb concentration in tomato shoot
d to the decrease in soil bioavailable Pb and P-Braykt1 and the increase
organic-C and exchangable-Ca according to equation: Pb shoot = 56.495 -I245 soil bioavail-Pb - 24.895 soil org-C - 0.872 soil exch-Ca + 0.897 soil Pay#l. The decrease in Pb concentration in tomato shoot was related to the
ase in S and increase in Mg concentration in tomato shoot following

ion: Pb shoo* 57.726 - 69.351 Mg shoot + 16.778 S shoot. The
lioration and fertilization treatment as the implementation of in situ
n tecnicque studied in this research was effective in decreacing Pb
the test plant shoot at series of Pb-enriched soils up to 750 mg