m
m
Line 14: Line 14:
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td>Nitrate (mg/L)</td>
+
<td>Nitrate-N (mg/L)</td>
 
<td>1 to 4</td>
 
<td>1 to 4</td>
 
<td>2 to 32</td>
 
<td>2 to 32</td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td>Ammonium (mg/L)</td>
+
<td>Ammonium-N (mg/L)</td>
 
<td>0.1 to 0.8</td>
 
<td>0.1 to 0.8</td>
 
<td>0.1 to 0.8</td>
 
<td>0.1 to 0.8</td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td>Nitrogen (mg/L)</td>
+
<td>Nitrogen (total) (mg/L)</td>
 
<td>2 to 8</td>
 
<td>2 to 8</td>
 
<td>2 to 32</td>
 
<td>2 to 32</td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td>Phosphorus (mg/L)</td>
+
<td>Phosphorus (total) (mg/L)</td>
 
<td>2 to 10</td>
 
<td>2 to 10</td>
 
<td>2 to 15</td>
 
<td>2 to 15</td>

Revision as of 16:16, 2 July 2013

Recommended green roof growing medium parameter ranges
Link to this table

Parameter Extensive green roofs Intensive green roofs
pH 6.5 to 7.8 6.5 to 7.8
Nitrate-N (mg/L) 1 to 4 2 to 32
Ammonium-N (mg/L) 0.1 to 0.8 0.1 to 0.8
Nitrogen (total) (mg/L) 2 to 8 2 to 32
Phosphorus (total) (mg/L) 2 to 10 2 to 15
Potassium (mg/L) 8 to 32 8 to 64
Calcium (mg/L) 100 to 300 100 to 300
Magnesium 10 to 80 10 to 80
Iron (mg/L) 8 to 32 8 to 32
Manganese 1 to 8 1 to 8
Boron (mg/L) 0.04 to 0.6 0.04 to 0.6
Sodium (mg/L) <20 <20
Zinc (mg/L) 1 to 10 1 to 10
Soluble salts (mmhos/cm) 0.4 to 1.2 0.4 to 1.2
Sodium Absorption Ratio (SAR) <2 <2