Lampiran Perhitungan_MKT
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Lampiran Perhitungan Analisis Dasar Tabel Berat Isi Silinder Mass a Tota l Koto r (Mt + Mr Massa Ring (Mr) Massa Total (Mt) Kadar Air Sub Sampel (W) Diamet er (d) Tingg i (p) Tanah Basah + Kaleng (Tb+K) Tanah oven + Kalen g (To+K ) Kaleng (K) cm cm gr gr gr gr gr gr 6 5 169, 1 46,4 116,7 123,83 116,7 3 7,13 Ket : d = Diameter ring p = Tinggi ring Tb = Massa tanah basah sebelum dioven To = Massa tanah oven K = Massa Kaleng W = Kadar air massa Ma = Massa air Mp 1 = Massa padatan sub sample Mp 2 = Massa padatan dari berat total
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Transcript of Lampiran Perhitungan_MKT
Lampiran Perhitungan
Analisis Dasar
Tabel Berat Isi
Silinder Massa
Total
Kotor
(Mt +
Mr
Massa
Ring
(Mr)
Massa
Total
(Mt)
Kadar Air Sub Sampel
(W)
Diameter
(d)
Tinggi
(p)
Tanah
Basah +
Kaleng
(Tb+K)
Tanah
oven +
Kaleng
(To+K)
Kaleng
(K)
cm cm gr gr gr gr gr gr
6 5 169,1 46,4 116,7 123,83 116,73 7,13
Ket :
d = Diameter ring
p = Tinggi ring
Tb = Massa tanah basah sebelum dioven
To = Massa tanah oven
K = Massa Kaleng
W = Kadar air massa
Ma = Massa air
Mp 1 = Massa padatan sub sample
Mp 2 = Massa padatan dari berat total
π = 3,14
Volume tanah (Vt) = 1/4 x π x d2 x p
= 1/4 x 3,14 x 62 x 5
= 141,3 cm3
Kadar air sub sampel (W) = Ma/Mp
= (Tb+K) – (To+K) / (To+K) - K
= (123,83 – 116,73) / (116,73 – 7,13)
= 0,064 g
% Kadar Air = 0,064 x 100 %
= 6,4 %
Massa padatan (Mp) = Berat total / (1 + KA)
= 116,7 / (1 + 0,064)
= 109,68 g
Berat Isi (BI) = Mp / Vt
= 109,68 / 141,3123,2035 / 97,10
= 0,776 g cm-3
Kebutuhan Pupuk
BI = 0,776 g cm-3
KLO = 20 cm
HLO = BI x KLO x Luas Lahan
= 0,776 g cm-3 x 20 cm x 100000000 cm2
= 1552000000 g
= 1552000 kg
Urea
Kebutuhan N = 50 kg/ha
Kebutuhan urea = 100/46 x 50 kg/ha = 108,69 kg/ha
Kebutuhan urea/polybag = x Kebutuhan pupuk
= x 108,69 kg
= 0,350 g
Pupuk Kandang
Kebutuhan unsur = 50 kg/ha
Kebutuhan pupuk kandang = 100/0,28 x 50 kg = 17857,14 kg/ha
Kebutuhan pupuk kandang/polybag = x Kebutuhan pupuk
= x 17857,14 kg
= 57,5 g
Pupuk Kompos
Kebutuhan unsur = 50 kg/ha
Kebutuhan pupuk kandang = 100/0,15 x 50 kg = 33333,33 kg/ha
Kebutuhan pupuk kandang/polybag = x Kebutuhan pupuk
= x 33333,33 kg
= 107,3 g
Analisis Akhir Tanah dan Tanaman
Perhitungan % Kadar Air
Kadar air = x 100%
P1U1 =
= 21,44%
P1U2 =
= 19,57%
P2U1 =
= 17,66%
P2U2 =
= 10,98%
P3U1 =
= 17,23%
P3U2 =
= 17,79%
P4U1 =
= 10,15%
P4U2 =
= 17,26%
Perhitungan C- Organik
%C-organik =
P1U1 = = 0,3
P1U2 = = 1,86
P2U1 = = 0,3
P2U2 = = 0,36
P3U1 = = 1,83
P3U2 = = 0,87
P4U1 = = 0,72
P4U2 = = 0,1
Perhitungan Bahan Organik Tanah
% Bahan Organik = x % C-Organik
P1U1
% Bahan Organik = x 0,3 %
= 0,517 %
P1U2
% Bahan Organik = x 1,86 %
= 3,207 %
P2U1
% Bahan Organik = x 0,3 %
= 0,517 %
P2U2
% Bahan Organik = x 0,36 %
= 0,621 %
P3U1
% Bahan Organik = x 1,83%
= 3,155 %
P3U2
% Bahan Organik = x 0,87 %
= 1,5 %
P4U1
% Bahan Organik = x 0,72 %
= 1,241 %
P4U2
% Bahan Organik = x 0,1 %
= 1,172 %
Perhitungan N-Total
FK (Faktor Kadar Air) =
P1U1 = 1,2144
P1U2 = = 1,1957
P2U1 = 1,1766
P2U2 =
P3U1 =
P3U2 =
P4U1 = 1,1015
P4U2 =
Kadar Nitrogen (N-Total) =
Keterangan :
Vc : Volume Sampel
Vb : Volume Blanko
N : Normalitas H2SO4 (0,009586)
P1U1 =
P1U2 =
P2U1 =
P2U2 =
P3U1 =
P3U2 =
P4U1 =
P4U2 =
Perhitungan N-Serapan
FK (Faktor Kadar Air) =
P1U1 = 1,2144
P1U2 = = 1,1957
P2U1 = 1,1766
P2U2 =
P3U1 =
P3U2 =
P4U1 = 1,1015
P4U2 =
Kadar Nitrogen (N-Serapan) =
Keterangan :
Vc : Volume Sampel
Vb : Volume Blanko
N : Normalitas H2SO4 (0,009586)
P1U1 =
P1U2 =
P2U1 =
P2U2 =
P3U1 =
P3U2 =
P4U1 =
P4U2 =
