Blackbutt

Eucalyptus pilularis


Blackbutt (Clemson, p.94) is a useful "dry time" honey and pollen tree for coastal areas of NSW. A one-sample test on blackbutt pollen gave a 21.8% crude protein level, and the amino-acid iso-leucine level was 3.6% of the total crude protein. (Table 35)

Blackbutt is a useful dry weather honey and pollen resource, with crops of 20 to 30 kg per hive of low density, dark honey produced. Often, blackbutt will save a beekeeper in a dry season. However, blackbutt will kill bees if rain falls when it is in flower.

Local knowledge about this tree species would be essential for commercial honey production.

During dry weather only, blackbutt pollen would be good to collect for sale or feedback to the bees. Bl_ackbutt can flower at any time of the year, but mostly in the summer.

Table 35: Blackbutt E. pilularis


Amino-acid
Minimum % of Amino-Acid from De Groot (1953)
Grafton February 1989 
Threonine 3.0 4.14
Valine 4.0 4.66
Methionine 1.5 2.34
Leucine 4.5 7.18
Iso-leucine 4.0 3.64*
Phenylalanine 2.5 4.92
Lysine 3.0 7.61
Histidine 1.5 6.84
Arginine 3.0 4.3
Tryptophan 1.0 -
Crude protein   21.8%

* Low level of this amino-acid


 



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