Sifat pupuk sangat
beragam sehingga pemilihan pupuk hendaknya mengacu pada Standar Nasional
Indonesia ( SNI ) yang telah ada.
Sumber Hara
|
Hara Utama
|
N
|
P2O5
|
K2O
|
MgO
|
CaO
|
B
|
Cu
|
S
|
Cl
|
1. Pupuk Tunggal
|
||||||||||
- Urea
|
N
|
46
|
|
|
|
|
|
|
|
|
- Ammonium Nitrat
(AN)
|
N
|
35
|
|
|
|
|
|
|
|
|
- Sulphate of
Ammonia (SOA - ZA)
|
N, S
|
21
|
|
|
|
|
|
|
24
|
|
- Rock Phosphate
(RP)
|
P, Ca
|
|
30
|
|
|
45
|
|
|
|
|
- Triple Super
Phosphate (TSP)
|
P, Ca
|
|
46
|
|
|
20
|
|
|
|
|
- Single Super
Phosphate (SSP)
|
P, Ca, S
|
|
18
|
|
|
25
|
|
|
11
|
|
- Muriate of Potash
(MOP - KCl)
|
K, Cl
|
|
|
60
|
|
|
|
|
|
35
|
- Sulphate of Potash
(SOP-ZK)
|
K, S
|
|
|
50
|
|
|
|
|
17
|
|
- Kieserite
|
Mg, S
|
|
|
|
27
|
|
|
|
23
|
|
- Dolomit
|
Mg, Ca
|
|
|
|
22
|
30
|
|
|
|
|
- Sulfur
|
S
|
|
|
|
|
|
|
|
97
|
|
- Borate
|
B
|
|
|
|
|
|
11
|
|
|
|
- Copper Sulphate
(CuSO4.H2O)
|
Cu
|
|
|
|
|
|
|
25
|
13
|
|
- Langbeinite
|
K, Mg, S
|
|
|
22
|
18
|
|
|
|
22
|
|
2. Pupuk Majemuk
|
||||||||||
- Diammonium
Phosphate (DAP)
|
N, P
|
18
|
46
|
|
|
|
|
|
|
|
- NPK (12-12-17-2)
|
N,P,K,Mg
|
12
|
12
|
17
|
2
|
|
|
|
|
|
- NPK (15-15-6-4)
|
N,P,K,Mg
|
15
|
15
|
6
|
4
|
|
|
|
|
|
- NPK (15-15-15)
|
N,P,K
|
15
|
15
|
16
|
|
|
|
|
|
|
3. Sisa - sisa
Tanaman
|
||||||||||
- Abu tandan kosong
|
K, Mg, Ca
|
|
4
|
40
|
6
|
5
|
|
|
|
|
- Tandan kosong
|
N, K
|
< 1
|
0,1
|
1,2
|
0,1
|
0,1
|
|
|
|
|
- Pelepah hasil
tunasan
|
N, P, K
|
0,5
|
0,1
|
0,8
|
0,1
|
0,1
|
|
|
|
|
- Limbah cair PKS
|
N, K, Mg
|
0,4
|
0,2
|
1,3
|
0,4
|
|
|
|
|
|
Lanjutkan membaca
Karakteristik
Pupuk Urea dan ZA
|
||
Keterangan
|
Jenis Pupuk
|
|
Urea
|
Z A
|
|
Kadar N (%)
|
42 - 46
|
21
|
Hara lain (%)
|
-
|
24 % S
|
Kelarutan dalam air
(gr/ltr)
|
1.030
|
750
|
Reaksi
|
agak masam
|
masam
|
Higroskopisitas
|
tinggi
|
kurang
|
Pencucian/penguapan
|
tinggi
|
sedang
|
Ketersediaan
|
mudah
|
mudah
|
Dosis standar (kg/phn/thn)
(umur 9 - 13 thn)
|
2,75
|
4,5
|
Karakteristik
Pupuk Phosphate
|
||||||||
Keterangan
|
Jenis Pupuk
|
|||||||
RP-Gafsa
|
RP-Maroco
|
CIRP
|
TSP
|
SP-36
|
||||
P2O5
(larut asam sitrat 2 %) |
26,7
|
33,1
|
28
|
46
|
36
|
|||
Hara Lain :
- CaO (%)
- Al2O3 + Fe2O3 (%)
- S (%)
|
49,8
0,2
-
|
48,2
0,18
-
|
35,7
9,3
-
|
18,3
0
-
|
-
-
5
|
|||
Kelarutan dalam
air
( gr/ltr ) |
0,125
|
-
|
-
|
> 99
|
-
|
|||
Reaksi
|
Netral - basa
|
Netral - basa
|
Netral - basa
|
Masam
|
Agak masam
|
|||
Higroskopisitas
|
-
|
-
|
-
|
-
|
-
|
|||
Kehalusan :
|
63
91
|
29
80
|
60
99
|
-
-
|
-
-
|
|||
Ketersediaan
|
Mudah
|
Mudah
|
Mudah
|
Tidak tersedia
|
Mudah
|
|||
Dosis standar (kg/phn/thn)
(umur 9 - 13 thn)
|
-
|
-
|
-
|
1,75
|
2,25
|
Karakteristik
Pupuk ZK dan KCl/MOP
|
||
Keterangan
|
Jenis Pupuk
|
|
ZK
|
MOP/KCl
|
|
Kadar K2O (%)
|
49 - 53
|
21
|
Hara lain (%)
|
18 % S
|
47 % Cl
|
Kelarutan dalam air
|
larut
|
larut
|
Reaksi
|
netral
|
netral
|
Higroskopisitas
|
-
|
-
|
Ketersediaan
|
mudah
|
mudah
|
Dosis standar (kg/phn/thn)
(umur 9 - 13 thn)
|
-
|
2,25
|
Karakteristik Pupuk Magnesium
|
|||
Keterangan
|
Jenis Pupuk
|
||
Kieserite
|
Dolomit
|
Dolomit - Lokal
|
|
Kadar MgO (%)
|
27
|
18 - 22
|
2,9 - 37,7
|
Hara lain (%)
|
22 % S
|
40 % CaO
|
0,9 - 48 % CaO
0,04 - 4,21 % Fe2O3
35 - 45 % SiO2
|
Kelarutan dalam air
|
Agak sukar
|
sukar
|
-
|
Reaksi
|
Agak masam
|
Basa
|
-
|
Higroskopisitas
|
-
|
-
|
-
|
Kehalusan
|
-
|
Bervariasi
> 95 % (mesh 100)
|
Bervariasi
> 90 % (mesh 80)
|
Ketersediaan
|
mudah
|
mudah
|
mudah
|
Dosis standar (kg/phn/thn)
(umur 9 - 13 thn)
|
1,5
|
2 - 2,5
|
-
|
Pencampuran Beberapa
Jenis Pupuk
|
Urea
|
Z A
|
R P
|
SP-36
|
ZK
|
MOP
|
Kieserite
|
Dolomit
|
Urea
|
a
|
N
|
|
a
|
a
|
a
|
|
N
|
Z A
|
N
|
a
|
|
N
|
x
|
x
|
|
a
|
R P
|
|
|
a
|
|
|
|
|
|
SP-36
|
a
|
N
|
|
a
|
x
|
a
|
|
N
|
ZK
|
a
|
x
|
|
x
|
a
|
a
|
|
a
|
MOP
|
a
|
x
|
|
a
|
a
|
a
|
|
a
|
Kieserite
|
|
|
|
|
|
|
a
|
|
Dolomit
|
N
|
a
|
|
N
|
a
|
a
|
|
a
|
Keterangan :
·
a = Dapat dicampur
·
N = Pupuk dapat dicampur
segera sebelum digunakan
·
x = Pupuk tidak
dapat dicampur
|
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