Environmental Engineering Reference
In-Depth Information
5
4.5
4
3.5
3
Common bermuda grass
Tifton 85 bermuda grass
Wild Millet
St. Augustine grass
Giant Reed
2.5
2
1.5
1
0.5
0
6/23/2006 8/17/2006 11/14/2006 6/27/2007 8/14/2007 10/8/2007 5/28/2008 8/11/2008
Harvesting Date
Fig. 9.5
Nitrogen content of species grown at the commercial hog farm
The mean K content of the biomass from the platforms ranged from 1.31 to
4.98% (Fig. 9.7). Some of the greatest values were found in the weeds cut in 2008.
The 2001-2002 study indicated that most of the K values for cattail, rush or maiden-
cane ranged from 3 to 4%. Some of our values for the 2005-2008 study were lower,
particularly for the common bermuda grass. The uptake of K by the weeds in 2008
was more consistent with the uptake by the plant species grown for the 2001-2002
study.
3.5
3
Common bermuda grass
2.5
2
Tifton 85 bermuda grass
1.5
Wild Millet
1
St. Augustine grass
0.5
Giant Reed
0
Harvesting Date
Fig. 9.6
Phosphorus content of species grown at the commercial hog farm
