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Fig. 16.1

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Fig. 16.6

Table 16.2 Soil Health Indicator Plow-Tillage No-Tillage Physical Aggregate stability (%) 22 50 *Bulk density (g/cm3) 1.39 1.32 *Penetration resistance (psi) 140 156 Permeability (mm/hr) 2.1 2.4 Plant available water capacity (%) 29.1 35.7 Infiltration capacity (mm/hr) 1.58 1.63 Chemical Early season nitrate-N (lbs/ac) 13 20 Phosphorus (lbs/ac) 21 Potassium (lbs/ac) 88 95 Magnesium (lbs/ac) 310 414 Calcium (lbs/ac) 7172 7152 *pH 8.0 7.8 Biological Organic matter (%) 4.0 5.4 Cellulose decomposition rate (%/week) 3.0 8.9 Potentially mineralizable nitrogen (mg/g/week) 1.5 1.7 Easily extractable glomalin (mg/g soil) 1.2 Total glomalin (mg/g soil) 4.3 6.6

Fig. 16.8

Fig. 16.10