Agriculture Reference
In-Depth Information
The effects of rootstocks on cropping efficiency
The effects of sixrootstocks averaged over 'Empire' and 'Jonagold' and vertical-axis
and Y-trellis training systems planted in ('M. EMLA'
=
).
Table
.
Trunk Cumulative
Light
Yield per unit
CSA
yield to
Cumulative interception
light
Rootstock
yr
yr
yield/CSA
yr
interception
'P.'
a
b
d
ab
c
'M.' / 'MM. '
a
b
b
c
ab
abc
'M. EMLA'
b
b
c
a
ab
'M. EMLA'
c
a
a
b
a
'O.
'
c
b
b
b
c
'Mark'
d
c
ab
c
bc
Means within columns followed by the same letter are not significantly different (
n
=
,
=
.
).
CSA, cross-sectional area (cm
).
a
Trees on 'MM.
P
' rootstock with an 'M.
' interstock.
Data from Robinson (
). Reproduced with permission.
8.0
26
6.0
IX
2" Interstocks
14"
-Single-worked
4.0
IX
26
3428
3428
3430
2.0
VII
VII
II
3430
8"
CC
II
6"
CC
0
0
10
20
30
40
50
60
Crown weight (kg)
Figure 2.4
The relationship of cropping efficiency to tree size,'Cox's
Orange Pippin' on 'Malling 2' rootstock with size-controlling
interstocks of 'M.9' ('IX'),'M.26','3428','MVII' ('M.7'),'M.II' ('M.2'),
'Crab C' ('CC'),and '3430'. Reproduced from Parry and Rogers
(1972) with permission.
