 2009 Nutrient Analysis of
Cover Crop Mixes
With the assistance of Dr. Ray Ward of Ward
Labs, we clipped, tested and analyzed four different cover crop mixes that
we had in our 2009 cover crop test plot. |
|
|
Bio
Yield
tons/ac
|
C
#/ac |
N
#/ac |
C:N Ratio |
P
#/ac
|
K
#/ac |
Ca
#/ac |
Mg
#/ac |
S
#/ac |
Zn
#/ac |
Fe
#/ac |
Mn
#/ac |
Cu
#/ac |
B
#/ac |
Cl
#/ac |
Mo
#/ac |
|
15# of
soybeans and 10# of base mix |
2.95
|
2458
|
108
|
22.7 |
45 |
218 |
90 |
15 |
18 |
.22 |
2.46 |
.30 |
.10 |
.13 |
53 |
.03 |
|
15# of
forage soybeans and 10# of base mix |
3.08
|
2573
|
125
|
20.6 |
39 |
228 |
66 |
13 |
17 |
.20 |
1.70 |
.27 |
.04 |
.13 |
62 |
.02 |
|
15# of
cowpeas and 10# of base mix |
2.73
|
2258
|
126
|
17.9 |
45 |
229 |
71 |
13 |
17 |
.22 |
1.33 |
.35 |
.05 |
.12 |
64 |
.02 |
|
15# of
field peas and 10# of base mix |
2.79
|
2306
|
138
|
16.7 |
37 |
191 |
64 |
12 |
20 |
.20 |
2.15 |
.25 |
.05 |
.13 |
50 |
.01 |
|
Base mix
is as follows: (30% common vetch, 25% lentil, 25% sorghum sudan, 7.5%
oil seed radish, 5% turnip, 5% canola, 2.5% hybrid Winfred Brassica)
|
|
|
|
N
lbs/ac |
C: N
Ratio |
Approx
Seed Cost |
Cost per
# of N (using 50% of test N )
|
|
15# of
soybeans and 10# of base mix |
108
|
22.7
|
$20
|
$0.37
|
|
15# of
forage soybeans and 10# of base mix |
125
|
20.6
|
$22
|
$0.35
|
|
15# of
cowpeas and 10# of base mix |
126
|
17.9
|
$27
|
$0.42
|
|
15# of
field peas and 10# of base mix |
138
|
16.7
|
$25
|
$0.36
|
|
Base mix
is as follows: (30% common vetch, 25% lentil, 25% sorghum sudan, 7.5%
oil seed radish, 5% turnip, 5% canola, 2.5% hybrid Winfred Brassica)
|
|
|
| |
|
