Perhitungan pupuk
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versi Lab [T] N Nilai P Nilai A1 0.40 s1 20.25 s2 A2 0.88 s1 3.30 n A3 0.83 s1 4.05 n B1 0.40 s1 21.75 s2 B2 0.73 s1 7.65 n B3 0.23 s1 12.15 s3 versi FAO s1 s2 N 0.36 0,21-0,5 0,1-0,2 P 30.50 26-35 16-25 K 0.25 0,2-0,3 <0.2 jumlah unsur yang dibutuhkan H=(S-T)*L*D*Bv N [+/-] (g) Nilai P A1 0.40 -21.20 tidak perlu 20.25 A2 0.88 -247.28 tidak perlu 3.30 A3 0.83 -223.73 tidak perlu 4.05 B1 0.40 -21.20 tidak perlu 21.75 B2 0.73 -176.63 tidak perlu 7.65 B3 0.23 58.88 s1 12.15 2 kelas P [+/-] (g) Nilai A1 A2 8,101.20 s2 A3 7,747.95 s2 B1 B2 6,052.35 s2 B3 Banyaknya pupuk yang diberikan/tan P = Hx100/Hp N (nilai H) Urea [+/-] (g) Nilai P (nilai H) A1 -21.20 -46.08 tidak perlu 4,827.75 A2 -247.28 -537.55 tidak perlu 12,811.20 A3 -223.73 -486.36 tidak perlu 12,457.95 B1 -21.20 -46.08 tidak perlu 4,121.25 B2 -176.63 -383.97 tidak perlu 10,762.35 B3 58.88 127.99 s1 8,642.85 2 kelas 1 kelas [S] s1
description
itung pupuk
Transcript of Perhitungan pupuk
versi Lab [T]N Nilai P Nilai K Nilai
A1 0.40 s1 20.25 s2 0.26 s1A2 0.88 s1 3.30 n 0.15 s2A3 0.83 s1 4.05 n 0.20 s1B1 0.40 s1 21.75 s2 0.15 s2B2 0.73 s1 7.65 n 0.15 s2B3 0.23 s1 12.15 s3 0.10 s2
versi FAO s1 s2 s3 nN 0.36 0,21-0,5 0,1-0,2 <0,1 -P 30.50 26-35 16-25 .10-15 <10K 0.25 0,2-0,3 <0.2 - -
jumlah unsur yang dibutuhkanH=(S-T)*L*D*Bv
N [+/-] (g) Nilai P [+/-] (g) NilaiA1 0.40 -21.20 tidak perlu 20.25 4,827.75 s1A2 0.88 -247.28 tidak perlu 3.30 12,811.20 s1A3 0.83 -223.73 tidak perlu 4.05 12,457.95 s1B1 0.40 -21.20 tidak perlu 21.75 4,121.25 s1B2 0.73 -176.63 tidak perlu 7.65 10,762.35 s1B3 0.23 58.87 s1 12.15 8,642.85 s1
2 kelas 1 kelasP [+/-] (g) Nilai P [+/-] (g)
A1 20.25 4,827.75A2 8,101.20 s2 3.30 4,333.20A3 7,747.95 s2 4.05 3,979.95B1 21.75 4,121.25B2 6,052.35 s2 7.65 2,284.35B3 12.15 3,932.85
Banyaknya pupuk yang diberikan/tanP = Hx100/Hp
N (nilai H) Urea [+/-] (g) Nilai P (nilai H) SP-36 [+/-] (g) NilaiA1 -21.20 -46.08 tidak perlu 4,827.75 13,410.42 s1A2 -247.28 -537.55 tidak perlu 12,811.20 35,586.67 s1A3 -223.73 -486.36 tidak perlu 12,457.95 34,605.42 s1B1 -21.20 -46.08 tidak perlu 4,121.25 11,447.92 s1B2 -176.63 -383.97 tidak perlu 10,762.35 29,895.42 s1B3 58.87 127.99 s1 8,642.85 24,007.92 s1
2 kelas 1 kelas
[S] s1
P (nilai H) SP-36 [+/-] (g) Nilai P (nilai H) SP-36 [+/-] (g) NilaiA1 4,827.75 13,410.42 s1A2 8,101.20 22,503.33 s2 4,333.20 12,036.67 s3A3 7,747.95 21,522.08 s2 3,979.95 11,055.42 s3B1 4,121.25 11,447.92 s1B2 6,052.35 16,812.08 s2 2,284.35 6,345.42 s3B3 3,932.85 10,924.58 s2
versi konversi kg/haN (nilai P) g/ha kg/ha P (nilai P) g/ha kg/ha
A1 -46.08 -25,341.85 -25.34 13,410.42 7,375,729.17 7,375.73A2 -537.55 -295,654.89 -295.65 35,586.67 19,572,666.67 19,572.67A3 -486.36 -267,497.28 -267.50 34,605.42 19,032,979.17 19,032.98B1 -46.08 -25,341.85 -25.34 11,447.92 6,296,354.17 6,296.35B2 -383.97 -211,182.07 -211.18 29,895.42 16,442,479.17 16,442.48B3 127.99 70,394.02 70.39 24,007.92 13,204,354.17 13,204.35
2 kelas 1 kelasP (nilai P) g/ha kg/ha P (nilai P) g/ha kg/ha
A1 13,410.42 7,375,729.17 7,375.73A2 22,503.33 12,376,833.33 12,376.83 12,036.67 6,620,166.67 6,620.17A3 21,522.08 11,837,145.83 11,837.15 11,055.42 6,080,479.17 6,080.48B1 11,447.92 6,296,354.17 6,296.35B2 16,812.08 9,246,645.83 9,246.65 6,345.42 3,489,979.17 3,489.98B3 10,924.58 6,008,520.83 6,008.52
Jumlah Populasi Tanaman Karet/ha 500-600/ha (World agroforestry center)550
jarak tanam 6*3 meter (Boerhendhy dan Suryaningtyas, 2012).lubang tanam 40*40*40 cm (Boerhendhy dan Suryaningtyas, 2012).
g => kg 0.001kg=>g 1,000.001 ha= 10.000 m2 9tan
6 72 m23
48
D kedalaman perakaran5 cm TBM
dibenamkan 4 titik piringan
L luas perakaran (piringan) 50
7,850.00 50
Bv 1.2
K [+/-] (g) Nilai0.26 -4.71 s10.15 47.10 s1 rumus0.20 23.55 s1 Menurut Snoeck 19880.15 47.10 s10.15 47.10 s10.10 70.65 s1
Nilais1 versi FAOs3 12.50s3 12.50s1s3 12.50s2 20.50
K (nilai H) KCL [+/-] (g) Nilai [P] Banyaknya pupuk yang diberikan-4.71 -7.85 s147.10 78.50 s1 [Hp] Kadar hara dalam pupuk (%)23.55 39.25 s1 Urea 4647.10 78.50 s1 Sp-36 3647.10 78.50 s1 KCL 6070.65 117.75 s1
cm2
g/cm3
[S] s3[S] s3
[S] s3[S] s2
K (nilai P) g/ha kg/ha-7.85 -4,317.50 -4.3278.50 43,175.00 43.1839.25 21,587.50 21.5978.50 43,175.00 43.1878.50 43,175.00 43.18
117.75 64,762.50 64.76
Titik Sampel % Pasir %Debu %Liat Tekstur (USDA) Nilai N Nilai
A1 39.03 39.88 21.09 loam s1 0.40 s1A2 28.69 62.51 8.80 silt loam s1 0.88 s1A3 40.10 50.94 8.96 silt loam s1 0.83 s1B1 19.17 49.55 31.28 silty clay loam s1 0.40 s1B2 30.95 60.22 8.83 silt loam s1 0.73 s1B3 20.72 52.83 26.45 silt loam s1 0.23 s1
r n
1 (rendah) 29.10 44.72 26.19 loam s1 0.40 s12 (sedang) 29.82 61.36 8.82 silt loam s1 0.80 s13 (tinggi) 30.41 51.89 17.71 silt loam s1 0.53 s1
0.5829.78 52.66 17.57 silt loam
max 0.23min 0.88
P Nilai K Nilai KTK Nilai pH Nilai
20.25 s2 0.26 s1 1.88 3.77 s23.30 n 0.15 s1 0.92 4.32 s14.05 n 0.20 s1 0.72 4.35 s1
21.75 s2 0.15 s1 2.08 3.74 s27.65 n 0.15 s1 0.92 4.22 s1
12.15 s3 0.10 s1 1.44 4.07 s1n f
21.00 s2 0.21 s1 1.98 3.76 s25.48 n 0.15 s1 0.92 4.27 s18.10 n 0.15 s1 1.08 4.21 s1
11.53 0.17 4.08
max 3.30 max 0.10 max 3.74 sangat masammin 21.75 min 0.26 min 4.35
Al-dd me/100g
sangat masam
Value C Rating P Rating
Annual average temp 26°C SI t - Quality rating SI
Dry months 3Average annual rainfall 1,850 mm
w - Quality ratingSoil drainage well SI
Soil texture(surface) sandy loam S2Rooting depth no limitatior SI
r - Quality rating S2r S2CEC (surface) high SIpH (surface) 5.5 S2
f - Quality rating S2f S2Total N (surface) low S2
Available P2O5 (surface) medium S3Available K2O (surface) high S1
n - Quality rating S3n M/MiSalinity (subsoil) no limitation SI
x - Quality rating SISlope 0-0.5% SI
Surface stoniness 0 SI Rock outcrops 0 SI
s - Quality rating SIC = S3n I = M/Mi P = S2
Current or present suitability Marginally suitable, nutrient availability limitation
Improvements for development (M) fertilizer application S3 rating,(Mi) moderate input.
Potential suitability Moderately suitable
Characteristics and Quality Ratings
Improvement/ Input level
Value C Rating P Rating
Soil drainage agak terhambat S3
Soil texture(surface) S1
r - Quality rating S3r S2pH (surface) 4.08 S1
f - Quality rating S1Total N (surface) > sedang [0,58] S1
Available P2O5 (surface) rendah [11,53] S3Available K2O (surface) >rendah [0,17] S1
n - Quality rating S3n M/MiSlope 3-8 % SI
s - Quality rating SIC = S3n I = M/Mi P = S2
Current or present suitability Marginally suitable, drainage & nutrient availability limitation
Improvements for development (M) fertilizer application S3 rating,(Mi) moderate input.
Potential suitability Moderately suitable
Characteristics and Quality Ratings
Improvement/ Input
level
silt loam [lempung berdebu]
Marginally suitable, drainage & nutrient availability limitation
N Nilai K Nilai0.40 s1 S1 0.26 s10.88 s1 S1 0.15 s10.83 s1 S1 0.20 s10.40 s1 S1 0.15 s10.73 s1 S1 0.15 s10.23 s1 S1 0.10 s1
0.40 s1 S1 0.21 s10.80 s1 S1 0.15 s10.53 s1 S1 0.15 s1
P Nilai20.25 s2 S2 value terendah3.30 n N value terendah4.05 n N value terendah
21.75 s2 S2 value terakhir7.65 n N
12.15 s3 S3
21.00 s2 S25.48 n N8.10 n N
