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A Garlic Testament
Seasons on a Small New Mexico Farm




Planting Systems

Variety
Mean weight per bulb (g) Clove weight at planting (g)
Ridges Flat
Blanc de la Drome
70
72
6 - 9
Blanc du Connun
91
78
> 12
Moulinin
39
40
< 2
Grulurose
35
34
< 3


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
August 3 All bulbs lifted, weighed and taken into dryer

 

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