Menurut : 1. Staf Pusat Penelitian Tanah, BPP Medan, 1982

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LAMPIRAN

Lampiran 1. Kriteria Penilaian Sifat Kimia Tanah

Sifat Tanah Sangat Rendah

Rendah Sedang Tinggi Sangat Tinggi Karbon (%) < 1,00 1,00-2,00 2,01-3,00 3,01-5,00 >5,00 Nitrogen (%) <0,10 0,10-0,20 0,21-0,50 0,51-0,75 >0,75 C/N <5,0 5,0-7,9 8,0-12,0 12,1-17,0 >17 P2O5 eks-HCl (%) <0,021 0,021-0,039 0,040-0,060 0,061-0,100 >0,100 P-avl Bray-II (ppm) <8,0 8,0-15 16-25 26-35 >35 K2O eks-HCl (me/100) <0,03 0,03-0,06 0,07-0,11 0,12-0,20 >0,20 KTK/CEC (me/100) <5 10-16 17-24 25-40 >40 Susunan Kation K-tukar (me/100) <0,1 0,1-0,2 0,3-0,5 0,6-1,0 >1,0 Na-tukar (me/100) <0,1 0,1-0,3 0,4-0,7 0,8-1,0 >1,0 Mg-tukar (me/100) <0,4 0,4-1,0 1,1-2,0 2,1-8,0 >8,0 Ca-tukar (me/100) <2,0 2-5 6-10 11-20 >20 Kejenuhan Basa (%) <20 20-35 36-50 51-70 >70 Kejenuhan Al (%) <10 10-20 21-30 31-60 >60 Kriteria pH tanah Kriteria pH H2O Sangat Masam < 4,5 Masam 4,5-5,5 Agak Masam 5,6-6,5 Netral 6,6-7,5 Agak Alkalis 7,6-8,5 Alkalis >8,5

Menurut : 1. Staf Pusat Penelitian Tanah, 1983 2. BPP Medan, 1982

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Lampiran 2. Hasil Analisis Tanah (*) Kode Tanah N-Total (%) C-Organik (%) P-Potensial (%) K-Tukar me/100g pH A1 0.19 1.39 0.089 0.52 5.55 A2 0.18 1.15 0.082 0.50 5.40 A3 0.13 0.69 0.064 0.48 5.13 A4 0.17 1.09 0.087 0.44 5.37 A5 0.22 1.65 0.093 0.47 5.12 A6 0.21 1.66 0.107 0.58 5.07 A7 0.14 0.93 0.071 0.28 4.94 A8 0.17 1.11 0.073 0.37 5.59 A9 0.17 1.46 0.080 0.43 5.33 A10 0.24 1.68 0.078 0.97 5.61 A11 0.28 1.76 0.123 0.91 5.89 A12 0.23 1.32 0.116 1.03 5.49 B1 0.17 1.23 0.077 0.69 5.02 B2 0.17 1.04 0.083 0.89 5.18 B3 0.17 1.30 0.113 1.15 5.04 B4 0.24 1.74 0.075 0.27 4.80 B5 0.17 1.07 0.072 0.61 5.27 B6 0.14 0.98 0.089 1.07 4.79 B7 0.09 0.39 0.101 0.42 5.00 B8 0.22 1.52 0.100 0.24 4.92 C1 0.20 1.67 0.067 0.53 4.89 C2 0.23 1.78 0.087 0.46 4.77 C3 0.22 1.55 0.074 0.38 5.72 C4 0.25 1.81 0.098 0.34 5.48 C5 0.21 1.36 0.072 0.30 4.97 C6 0.50 3.84 0.138 0.31 5.00 C7 0.27 1.47 0.090 0.63 5.10 C8 0.21 1.44 0.083 0.65 4.94 C9 0.10 0.35 0.073 0.79 5.31 C10 0.16 1.25 0.077 0.41 4.92

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Lampiran 3. Tabel Hasil Analisis Korelasi Hara C, pH dengan NPK Tanah

 Hasil Analisi Korelasi Hara C dengan N Tanah

Descriptive Statistics Mean Std. Deviation n C 1.3893 .59917 30 N .2017 .07259 30 Correlations C N C Pearson Correlation 1 .958 Sig. (2-tailed) .000 n 30 30 N Pearson Correlation .958 1 Sig. (2-tailed) .000 n 30 30

 Hasil Analisis Koreasi Hara C dengan P Tanah

Descriptive Statistics Mean Std. Deviation n C 1.3893 .59917 30 P .08773 .017679 30 Correlations C P C Pearson Correlation 1 .554 Sig. (2-tailed) .001 n 30 30 P Pearson Correlation .554 1 Sig. (2-tailed) .001 n 30 30

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 Hasil Analisis Korelasi Hara C dengan K-tukar Tanah Descriptive Statistics Mean Std. Deviation n C 1.3893 .59917 30 K .5707 .25776 30 Correlations C K C Pearson Correlation 1 -.206 Sig. (2-tailed) .275 n 30 30 K Pearson Correlation -.206 1 Sig. (2-tailed) .275 n 30 30

 Hasil Analisis Korelasi Kemasaman Tanah dengan P-potensial

Descriptive Statistics Mean Std. Deviation n pH 5.1870 .29827 30 P .08773 .017679 30 Correlations pH P pH Pearson Correlation 1 .117 Sig. (2-tailed) .539 n 30 30 P Pearson Correlation .117 1 Sig. (2-tailed) .539 n 30 30

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Lampiran 4. Peta Administrasi Desa Banuaji Kecamatan Adiankoting

Lampiran 5. Peta Status Hara N-total Desa Banuaji Kecamatan Adiankoting

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Lampiran 7. Peta Status Hara K-tukar Desa Banuaji Kecamatan Adiankoting

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Lampiran 10. Perhitungan kebutuhan pupuk tanaman kacang tanah 1. 𝑃 𝑝𝑜𝑡𝑒𝑛𝑠𝑖𝑎𝑙 (𝑒𝑘𝑠𝑡𝑟𝑎𝑘𝑠𝑖 𝐻𝐶𝑙 25%) = 116 𝑚𝑔/100𝑔 (tinggi) 𝑃 𝑡𝑒𝑟𝑠𝑒𝑑𝑖𝑎 = 1% 𝑑𝑎𝑟𝑖 𝑃 𝑝𝑜𝑡𝑒𝑛𝑠𝑖𝑎𝑙 (∗ 1) 𝑃 𝑡𝑒𝑟𝑠𝑒𝑑𝑖𝑎 𝑑𝑖 𝑑𝑎𝑙𝑎𝑚 𝑡𝑎𝑛𝑎ℎ = 1% × 116 𝑚𝑔/100 𝑔 = 1,16 𝑚𝑔 𝑃2𝑂5/100 𝑔 𝑡𝑎𝑛𝑎ℎ = 11,6 𝑚𝑔 𝑃2𝑂5/1 𝑘𝑔 = 0,0116 𝑔 𝑃2𝑂5/1 𝑘𝑔 𝐷𝑖 𝑎𝑠𝑚𝑠𝑖𝑘𝑎𝑛 𝑏𝑒𝑟𝑎𝑡 1 ℎ𝑎 𝑡𝑎𝑛𝑎ℎ = 2.500.000 𝑘𝑔

𝐵𝑎𝑛𝑦𝑎𝑘𝑛𝑦𝑎 P tersedia di dalam tanah = 0,0116 𝑔/1 𝑘𝑔 × 2.500.000 𝑘𝑔 = 116 × 10−4_{× 2,5 × 10}6_{g P2O5} = 290 × 102_{𝑔 𝑃2𝑂5/ℎ𝑎} = 29 𝑘𝑔 𝑃2𝑂5/ℎ𝑎 𝑘𝑒𝑏𝑢𝑡𝑢ℎ𝑎𝑛 𝑃2𝑂5 𝑘𝑎𝑐𝑎𝑛𝑔 𝑡𝑎𝑛𝑎ℎ = 45 𝑘𝑔 𝑃2𝑂5/ℎ𝑎 𝑃2𝑂5 𝑦𝑎𝑛𝑔 𝑝𝑒𝑟𝑙𝑢 𝑑𝑖𝑡𝑎𝑚𝑏𝑎ℎ𝑘𝑎𝑛 = 45 − 29 = 16 𝑘𝑔 𝑃2𝑂5/ℎ𝑎 𝑏𝑎𝑛𝑦𝑎𝑘𝑛𝑦𝑎 𝑃2𝑂5 𝑦𝑎𝑛𝑔 𝑡𝑒𝑟𝑎𝑛𝑔𝑘𝑢𝑡 𝑝𝑎𝑛𝑒𝑛 = 3,2 𝑘𝑔/ha 𝑆𝑃 − 36 𝑦𝑎𝑛𝑔 𝑝𝑒𝑟𝑙𝑢 𝑑𝑖𝑡𝑎𝑚𝑏𝑎ℎ𝑎𝑛 = 100 36 × (16 + 3,2)𝑘𝑔 𝑃2𝑂5 = 53,33 𝑘𝑔 𝑆𝑃 − 36/ℎ𝑎 2. 𝑃 𝑝𝑜𝑡𝑒𝑛𝑠𝑖𝑎𝑙 = 80 𝑚𝑔/100𝑔 (sangat tinggi) 𝑃 𝑡𝑒𝑟𝑠𝑒𝑑𝑖𝑎 = 1% 𝑑𝑎𝑟𝑖 𝑃 𝑝𝑜𝑡𝑒𝑛𝑠𝑖𝑎𝑙 (∗ 1) 𝑃 𝑡𝑒𝑟𝑠𝑒𝑑𝑖𝑎 𝑑𝑖 𝑑𝑎𝑙𝑎𝑚 𝑡𝑎𝑛𝑎ℎ = 1% × 80 𝑚𝑔/100 𝑔 = 0,8 𝑚𝑔 𝑃2𝑂5/100 𝑔 𝑡𝑎𝑛𝑎ℎ = 8 𝑚𝑔 𝑃2𝑂5/1 𝑘𝑔 = 0,008 𝑔 𝑃2𝑂5/1 𝑘𝑔 𝐷𝑖 𝑎𝑠𝑚𝑠𝑖𝑘𝑎𝑛 𝑏𝑒𝑟𝑎𝑡 1 ℎ𝑎 𝑡𝑎𝑛𝑎ℎ = 2.500.000 𝑘𝑔

𝐵𝑎𝑛𝑦𝑎𝑘𝑛𝑦𝑎 P2O5 di dalam tanah = 0,008 𝑔/1 𝑘𝑔 × 2.500.000 𝑘𝑔 = 8 × 10−3× 2,5 × 106 g P2O5 = 20 × 103𝑔 𝑃2𝑂5/ℎ𝑎

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𝑏𝑎𝑛𝑦𝑎𝑘𝑛𝑦𝑎 𝑃2𝑂5 𝑦𝑎𝑛𝑔 𝑡𝑒𝑟𝑎𝑛𝑔𝑘𝑢𝑡 𝑝𝑎𝑛𝑒𝑛 = 3,2 𝑘𝑔 𝑆𝑃 − 36 𝑦𝑎𝑛𝑔 𝑝𝑒𝑟𝑙𝑢 𝑑𝑖𝑡𝑎𝑚𝑏𝑎ℎ𝑎𝑛 = 100 36 × (15 + 3,2)𝑘𝑔 𝑃2𝑂5 = 50,55 𝑘𝑔 𝑆𝑃 − 36/ℎ𝑎 3. 𝑁 − 𝑡𝑜𝑡𝑎𝑙 = 0,09 % (sangat rendah) 𝑁 𝑡𝑒𝑟𝑠𝑒𝑑𝑖𝑎 = 1% − 4% 𝑑𝑎𝑟𝑖 𝑁 𝑡𝑜𝑡𝑎𝑙(∗ 2) 𝑁 𝑡𝑒𝑟𝑠𝑒𝑑𝑖𝑎 𝑑𝑖 𝑑𝑎𝑙𝑎𝑚 𝑡𝑎𝑛𝑎ℎ = 4% × 0,09 % = 0,0036 𝑁 𝐷𝑖 𝑎𝑠𝑢𝑚𝑠𝑖𝑘𝑎𝑛 𝑏𝑒𝑟𝑎𝑡 1 ℎ𝑎 𝑡𝑎𝑛𝑎ℎ = 2.500.000 𝑘𝑔

𝐵𝑎𝑛𝑦𝑎𝑘𝑛𝑦𝑎 N tersedia di dalam tanah = 0,0036 × 2.500.000 𝑘𝑔 = 36 × 10−4× 2,5 × 106 kg N = 90 × 102 𝑘𝑔 𝑁/ℎ𝑎 𝑘𝑒𝑏𝑢𝑡𝑢ℎ𝑎𝑛 𝑁 𝑘𝑎𝑐𝑎𝑛𝑔 𝑡𝑎𝑛𝑎ℎ = 15 − 20 𝑘𝑔 𝑁/ℎ𝑎 (𝑡𝑒𝑟𝑐𝑢𝑘𝑢𝑝𝑖) 4. 𝑁 − 𝑡𝑜𝑡𝑎𝑙 = 0,16 % (rendah ) 𝑁 𝑡𝑒𝑟𝑠𝑒𝑑𝑖𝑎 = 1% − 4% 𝑑𝑎𝑟𝑖 𝑁 𝑡𝑜𝑡𝑎𝑙(∗ 2) 𝑁 𝑡𝑒𝑟𝑠𝑒𝑑𝑖𝑎 𝑑𝑖 𝑑𝑎𝑙𝑎𝑚 𝑡𝑎𝑛𝑎ℎ = 4% × 0,16 % = 0,0064 𝑁 𝐷𝑖 𝑎𝑠𝑢𝑚𝑠𝑖𝑘𝑎𝑛 𝑏𝑒𝑟𝑎𝑡 1 ℎ𝑎 𝑡𝑎𝑛𝑎ℎ = 2.500.000 𝑘𝑔

𝐵𝑎𝑛𝑦𝑎𝑘𝑛𝑦𝑎 N tersedia di dalam tanah = 0,0064 × 2.500.000 𝑘𝑔 = 64 × 10−4_{× 2,5 × 10}6_{kg N} = 160 × 102_{𝑘𝑔 𝑁/ℎ𝑎} 𝑘𝑒𝑏𝑢𝑡𝑢ℎ𝑎𝑛 𝑁 𝑘𝑎𝑐𝑎𝑛𝑔 𝑡𝑎𝑛𝑎ℎ = 15 − 20 𝑘𝑔 𝑁/ℎ𝑎 (𝑡𝑒𝑟𝑐𝑢𝑘𝑢𝑝𝑖) 5. 𝑁 − 𝑡𝑜𝑡𝑎𝑙 = 0,25 % (sedang) 𝑁 𝑡𝑒𝑟𝑠𝑒𝑑𝑖𝑎 = 1% − 4% 𝑑𝑎𝑟𝑖 𝑁 𝑡𝑜𝑡𝑎𝑙 (∗ 2) 𝑁 𝑡𝑒𝑟𝑠𝑒𝑑𝑖𝑎 𝑑𝑖 𝑑𝑎𝑙𝑎𝑚 𝑡𝑎𝑛𝑎ℎ = 4% × 0,25 % = 0,01 𝑁 𝐷𝑖 𝑎𝑠𝑢𝑚𝑠𝑖𝑘𝑎𝑛 𝑏𝑒𝑟𝑎𝑡 1 ℎ𝑎 𝑡𝑎𝑛𝑎ℎ = 2.500.000 𝑘𝑔

𝐵𝑎𝑛𝑦𝑎𝑘𝑛𝑦𝑎 N tersedia di dalam tanah = 0,01 × 2.500.000 𝑘𝑔 = 1 × 10−2× 2,5 × 106 kg N

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= 25 × 103 𝑘𝑔 𝑁/ℎ𝑎 𝑘𝑒𝑏𝑢𝑡𝑢ℎ𝑎𝑛 𝑁 𝑘𝑎𝑐𝑎𝑛𝑔 𝑡𝑎𝑛𝑎ℎ = 15 − 20𝑘𝑔/ℎ𝑎 (𝑡𝑒𝑟𝑐𝑢𝑘𝑢𝑝𝑖) 6. 𝐾 − 𝑡𝑢𝑘𝑎𝑟 = 0,38 𝑚𝑒/100𝑔 (sedang) 1 𝑚𝑒 = 1 𝑚𝑔 × 𝑏𝑒𝑟𝑎𝑡 𝑎𝑡𝑜𝑚/𝑣𝑎𝑙𝑒𝑛𝑠𝑖 = 1 × 39/1 = 39 𝑚𝑔 0,38 𝑚𝑒/100𝑔 = 0,38 × 39 𝑚𝑔 /100 𝑔 = 14,82 𝑚𝑔 /100 𝑔 = 148,2 𝑚𝑔 /1 𝑘𝑔 = 0,1482 𝑔 /1 𝑘𝑔 𝐷𝑖 𝑎𝑠𝑚𝑠𝑖𝑘𝑎𝑛 𝑏𝑒𝑟𝑎𝑡 1 ℎ𝑎 𝑡𝑎𝑛𝑎ℎ = 2.500.000 𝑘𝑔

𝐵𝑎𝑛𝑦𝑎𝑘𝑛𝑦𝑎 K − tukar di dalam tanah = 0,1482 𝑔/1 𝑘𝑔 × 2.500.000 𝑘𝑔 = 14,82 × 10−2× 2,5 × 106 g = 37,05 × 104𝑔/ℎ𝑎 = 370,5 𝑘𝑔 𝐾 − 𝑡𝑢𝑘𝑎𝑟/ℎ𝑎 𝑏𝑎𝑛𝑦𝑎𝑘𝑛𝑦𝑎 𝐾2𝑂 𝑑𝑖𝑑𝑎𝑙𝑎𝑚 𝑡𝑎𝑛𝑎ℎ =𝐵𝑀 𝐾2𝑂 𝐵𝐴𝐾2 × 370,5 𝑘𝑔 𝐾 − 𝑡𝑢𝑘𝑎𝑟 = 94 78× 370,5 𝑘𝑔 = 446,5 𝑘𝑔 𝐾2𝑂/ℎ𝑎 𝑘𝑒𝑏𝑢𝑡𝑢ℎ𝑎𝑛 𝐾2𝑂 𝑘𝑎𝑐𝑎𝑛𝑔 𝑡𝑎𝑛𝑎ℎ = 60 𝑘𝑔 𝐾2𝑂/ℎ𝑎 𝑘𝑒𝑡 ∶ 𝑝𝑢𝑝𝑢𝑘 𝐾 𝑡𝑖𝑑𝑎𝑘 𝑝𝑒𝑟𝑙𝑢 𝑑𝑖𝑡𝑎𝑚𝑏𝑎ℎ 𝑘𝑎𝑟𝑒𝑛𝑎 𝑠𝑢𝑑𝑎ℎ 𝑚𝑒𝑚𝑒𝑛𝑢ℎ𝑖 𝑘𝑒𝑏𝑢𝑡𝑢ℎ𝑎𝑛 𝑡𝑎𝑛𝑎𝑚𝑎𝑛 7. 𝐾 − 𝑡𝑢𝑘𝑎𝑟 = 0,69 𝑚𝑒/100𝑔 ( tinggi ) 1 𝑚𝑒 = 1 𝑚𝑔 × 𝑏𝑒𝑟𝑎𝑡 𝑎𝑡𝑜𝑚/𝑣𝑎𝑙𝑒𝑛𝑠𝑖 = 1 × 39/1 = 39 𝑚𝑔 0,38 𝑚𝑒/100𝑔 = 0,69 × 39 𝑚𝑔 /100 𝑔 = 26,91 𝑚𝑔 /100 𝑔 = 269,1 𝑚𝑔 /1 𝑘𝑔

(11)

𝐵𝑎𝑛𝑦𝑎𝑘𝑛𝑦𝑎 K − tukar di dalam tanah = 0,2691 𝑔/1 𝑘𝑔 × 2.500.000 𝑘𝑔 = 26,91 × 10−2_{× 2,5 × 10}6_g = 67,275 × 104𝑔/ℎ𝑎 = 672,75 𝑘𝑔 𝐾 − 𝑡𝑢𝑘𝑎𝑟/ℎ𝑎 𝑏𝑎𝑛𝑦𝑎𝑘𝑛𝑦𝑎 𝐾2𝑂 𝑑𝑖𝑑𝑎𝑙𝑎𝑚 𝑡𝑎𝑛𝑎ℎ =𝐵𝑀 𝐾2𝑂 𝐵𝐴𝐾2 × 370,5 𝑘𝑔 𝐾 − 𝑡𝑢𝑘𝑎𝑟 = 94 78× 672,75 𝑘𝑔 = 810,75 𝑘𝑔 𝐾2𝑂/ℎ𝑎 𝑘𝑒𝑏𝑢𝑡𝑢ℎ𝑎𝑛 𝐾2𝑂 𝑘𝑎𝑐𝑎𝑛𝑔 𝑡𝑎𝑛𝑎ℎ = 60 𝑘𝑔 𝐾2𝑂/ℎ𝑎 𝑘𝑒𝑡 ∶ 𝑝𝑢𝑝𝑢𝑘 𝐾 𝑡𝑖𝑑𝑎𝑘 𝑝𝑒𝑟𝑙𝑢 𝑑𝑖𝑡𝑎𝑚𝑏𝑎ℎ 𝑘𝑎𝑟𝑒𝑛𝑎 𝑠𝑢𝑑𝑎ℎ 𝑚𝑒𝑚𝑒𝑛𝑢ℎ𝑖 𝑘𝑒𝑏𝑢𝑡𝑢ℎ𝑎𝑛 𝑡𝑎𝑛𝑎𝑚𝑎𝑛 8. 𝐾 − 𝑡𝑢𝑘𝑎𝑟 = 1,08 𝑚𝑒/100𝑔 ( sangat tinggi ) 1 𝑚𝑒 = 1 𝑚𝑔 × 𝑏𝑒𝑟𝑎𝑡 𝑎𝑡𝑜𝑚/𝑣𝑎𝑙𝑒𝑛𝑠𝑖 = 1 × 39/1 = 39 𝑚𝑔 1,08 𝑚𝑒/100𝑔 = 1,08 × 39 𝑚𝑔 /100 𝑔 = 42,12 𝑚𝑔 /100 𝑔 = 421,2,1 𝑚𝑔 /1 𝑘𝑔 = 0,4212 𝑔 /1 𝑘𝑔 𝐷𝑖 𝑎𝑠𝑚𝑠𝑖𝑘𝑎𝑛 1 ℎ𝑎 = 2.500.000 𝑘𝑔

𝐵𝑎𝑛𝑦𝑎𝑘𝑛𝑦𝑎 K − tukar di dalam tanah = 0,4212 𝑔/1 𝑘𝑔 × 2.500.000 𝑘𝑔 = 42,12 × 10−2_{× 2,5 × 10}6_g = 105,3 × 104𝑔/ℎ𝑎 = 1053 𝑘𝑔 𝐾 − 𝑡𝑢𝑘𝑎𝑟/ℎ𝑎 𝑏𝑎𝑛𝑦𝑎𝑘𝑛𝑦𝑎 𝐾2𝑂 𝑑𝑖𝑑𝑎𝑙𝑎𝑚 𝑡𝑎𝑛𝑎ℎ =𝐵𝑀 𝐾2𝑂 𝐵𝐴𝐾2 × 1053 𝑘𝑔 𝐾 − 𝑡𝑢𝑘𝑎𝑟 = 94 78× 1053 𝑘𝑔 = 1269 𝑘𝑔 𝐾2𝑂/ℎ𝑎 𝑘𝑒𝑏𝑢𝑡𝑢ℎ𝑎𝑛 𝐾2𝑂 𝑘𝑎𝑐𝑎𝑛𝑔 𝑡𝑎𝑛𝑎ℎ = 60 𝑘𝑔 𝐾2𝑂/ℎ𝑎 𝑘𝑒𝑡 ∶ 𝑝𝑢𝑝𝑢𝑘 𝐾 𝑡𝑖𝑑𝑎𝑘 𝑝𝑒𝑟𝑙𝑢 𝑑𝑖𝑡𝑎𝑚𝑏𝑎ℎ 𝑘𝑎𝑟𝑒𝑛𝑎 𝑠𝑢𝑑𝑎ℎ 𝑚𝑒𝑚𝑒𝑛𝑢ℎ𝑖 𝑘𝑒𝑏𝑢𝑡𝑢ℎ𝑎𝑛 𝑡𝑎𝑛𝑎𝑚𝑎𝑛 Catatan : *1. Sutedjo, 2002 *2. Damanik, dkk . 2011