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37 <br /> Table 620-1 1 . Soil Reconstruction Material for Drastically Disturbed Areas. <br /> LIMITS l� <br /> RESTRICTIVE <br /> PROPERTY GOOD FAIR POOR FEATURE <br /> 1. SODIUM ADSORPTION <4 4-13 >13 EXCESS SODIUM <br /> RATIO <br /> Lill <br /> 2. SALINITY (MMHOS/CM) <8 8-16 >16 EXCESS SALT3. SOIL REACTION 5.0-8.5 4.0-5.0 <4.0 TOO ACID <br /> (pH, 0-40") <br /> 3a. SOIL REACTION - <4.0 --- TOO ACID <br /> (pH, >40") pi <br /> 3b. SOIL REACTION --- --- >8.5 TOO ALKALINE <br /> (pH, >40") [I <br /> 4. AVAILABLE WATER >.10 .05-.10 <.05 DROUGHTY <br /> CAPACITY (IN/IN) <br /> 5. EROSION FACTOR (K) <.35 >.35 --- ERODES EASILY <br /> 6. WIND ERODIBILITY --- --- 1, 2 SOIL BLOWING <br /> GROUP <br /> 7. TEXTURE --- SCL, CL, C SIC, TOO CLAYEY <br /> SICL <br /> 7a. TEXTURE --- LCOS, LS, ( is, S, TOO SANDY <br /> LFS, LVFS F S, VFS <br /> 8. WEIGHT PERCENT 3-10" <25 25-50 >50% TOO COBBLY <br /> 8a. WEIGHT PERCENT >10" <5 5-15 >15 TOO STONY <br /> 9. LAYER THICKNESS (IN) >40 20-40 <20 THIN LAYER ` <br /> 10. ORGANIC MATTER (PCT) >1 0.5-1.0 <.05 LOW FERTILITY <br /> 1 1. CLAY ACTIVITY ..24 .1 6-24 <.16 LOW FERTILITY <br /> CEC/CLAY <br /> 12. CALCIUM CARBONATE <15 15-40 >40 EXCESS LIME ] <br /> EO (PCT) <br /> lJ <br /> rl <br /> I <br /> ( 1 <br /> (430-VI-NSH, Draft, September 1992) <br />