Tabel 4.2 Kriteria Kesesuaian Lahan tanaman Padi( Oryza sativa)
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Persyaratan
Penggunaan / Karateristik Lahan
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Kelas Kesesuaian Lahan
Aktual
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S1
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S2
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S3
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N
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Media Parakaran (rc)
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Tekstur
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H, ah, s
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H, ah, s
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Ak
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K
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Bahan Kasar (%)
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< 15
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15 - 35
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35 - 55
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> 55
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Kedalaman Tanah (cm)
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> 100
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75 - 100
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50 - 75
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< 50
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Retensi Hara (nr)
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KTK Liat (cmol)
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> 16
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< 16
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-
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-
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Kejenuhan Basa (%)
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> 20
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< 20
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-
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pH H2O
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5,0 - 6,5
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4,2 - 5,0
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< 4,2
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-
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6,5 - 7,0
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> 7,0
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-
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C-organik (%)
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> 0,8
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< 0,8
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-
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-
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Toksisitas (xc)
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Salinitas (ds/m)
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< 2
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2 - 3
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3 - 4
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> 4
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Penyiapan Lahan (lp)
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Batuan di permukaan (%)
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< 5
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5 - 15
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15 - 40
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> 40
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Singkapan batuan (%)
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< 5
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5 - 15
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15 - 25
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> 25
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