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Coring trees for heartwood samples, Marlborough,  May 2016

This year we have begun taking cores from our trial sites to sample for heartwood. We are using a unique coring tool designed with assistance from Callaghan Innovation. We will be taking many thousands of cores as part of our research. 

2009 E. bosistoana breeding population Marlborough May 2016

2009 E. bosistoana breeding population Marlborough May 2016

Six year old tree being cored

Six year old tree being cored

Yanjie Li UoC PhD student using coring drill

Yanjie Li UoC PhD student using coring drill

Cores are taken right through the stem

Cores are taken right through the stem

The family and progeny code are recorded on each core

The family and progeny code are recorded on each core

Freshly cut cores

Freshly cut cores.

Hole left in stem is 19 mm diameter.

Hole left in stem is 19 mm diameter.

Cores stained with di methyl yellow to identify heartwood.

Cores stained with di methyl yellow to identify heartwood.