The mean bulb weight from both systems within
each variety was similar, except that Blanc
du Connun tended to be larger in the ridges.
This seems to confirm the results of the spacing
trial, which suggest that at the plant spacings
used there is little influence on bulb size.
If cloves can be planted in ridges without
loss of yield, like Narcissus, mechanical
lifting might be made considerably easier.
GARLIC
SPACING TRIAL
Efford 1982/3
Tentative conclusions are
that bulb weight, although variable increased
as plant spacing increased. However, yield
per unit area decreased steadily as plant
spacing increased.
OBJECT
To compare various plant
spacings with a view to establishing the optimum
area per bulb to obtain maximum yield per
unit area.
TREATMENTS
Plant
Area (cm²)
250.0
305.1
372.3
454.4
554.5
676.7
825.8
1007.8
1229.8
1500.9
Variety:
Fructidor Grade: Cloves
4.0g - 5.99g Layout:
Fan design, 2 replicates at right angles
DIARY
1982
August
3
Field
site ploughed
27
Burnt
off weed with Paraquat (as Gramoxone)
at 5.6 l/ha.
September
8
Base
fertiliser applied:
100 kg/ha N
35 kg/ha P2O5
75 kg/ha K2O
October
mid
Cloves
hot water treated 46ºC for 2 hours
28
Spike
rotovated to planting tilth
November
4
First
replicate planted
5
Second
replicate planted
18
Weed
Control:
Propachlor (as SB Propachlor 65) at
6.7 kg/ha
Chlorthal-dimethyl (as Dacthal) at 6.2
kg/ha
Paraquat (as Gramoxone) at 2.8 l/ha
December
21
First
emergence
1983
March
17
Top
dressing applied - 140 kg/ha N
May
13
Top
dressing applied - 194 kg/ha N
27
After
hand hoeing, where necessary applied Chloridazon
with Chlorbufam (as Alicep) at 4.5 kg/ha