Agriculture Reference
In-Depth Information
Fig. 5.37
Single-pass corn stover and grain harvester. (
a
) Grain combine modified with a stalk-gathering
head (
front
) and cob-gathering head (
back
). (
b
) A grain combine modified with a whole-plant head and
gathering cobs and husk. Adapted from [
33
]
Table 5.12
Stover and grain mass flow rates for different head types
a
Mass flow (Mg h
−1
)
Wet
stover
Area
productivity
(ha h
−1
)
Ratio of head
to ear height
Dry
stover
Dry
grain
Wet
grain
Year
Head type
2006 Ear snapper
0.57
2.9
d
8.4
c
5.3
c
37.6
d
29.2
d
Wholeplant
0.50
1.4
b
14.3
e
8.8
d
18.7
b
14.6
b
Stalk gathering 0.43
1.8
c
14.8
e
8.8
d
23.2
c
18.1
c
Front wagon
9.9
d
5.7
c
Rear wagon
4.9
b
3.1
b
LSD (
P
=0.05)
0.1
0.8
0.5
3.0
2.4
2005 Ear snapper
0.45
3.4
d
12.0
c
7.3
c
50.4
c
38.1
c
Wholeplant
0.22
1.5
b
24.9
e
12.2
e
24.2
b
18.4
b
Stalk gathering 0.22
1.9
c
18.4
b
9.5
d
25.0
b
18.9
b
Front wagon
13.6
c
6.5
c
Rear wagon
4.8
d
3.0
b
LSD (
P
=0.05)
0.3
2.3
1.2
3.7
2.2
a
Adapted from [
33
]
b, c, d, e
Different subscripts in the same column are significantly different at 95 % confidence. LSD
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