Nitrogen and the alder
The aler prefers moist soil , were it lives
together (symbiosis) with bacteria that bind nitrogen
and produces nitrates. Those nitrates are used by
the alder for its own production of proteins.
The leaves of the Alder
The leaves of the Alder strongly resembles the leaves of
the common Hazel.
The alnus is a mediumlarge tree.
male catkins on the right, mature female catkins on the left
mature and immature female catkins
The alnus during a frost period in a typically Dutch landscape.
This list gives an indication of the quality as a firewood
Alder fastburning, good firewood.
Birch good , but burns fast
Horse chestnut bad quality firewood, hard to ignite.
Beech very good, but need to be very dry.
Oak very good
Ashvery good firewood
Mulberry very good , but hard to get
monkey puzzle woodbad firewood, don't use it
White poplar smokes, bad firewood
Black locust or Robiniavery good and exspensive.
Walnut good , but hard to get
Larch bad firewood.
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