Videos

Foliage sampling

February and March are foliage sampling months in New Zealand’s planted forests. The nutrient content of needles gives a good overview of the nutrient status of the tree. Forest owners and managers can use the information to decide if they need to add nitrogen or trace elements, for example, to improve tree productivity.

Soil sampling

The soil properties of planted forests – topsoil depth, soil structure, rooting depth, hard pans, erosion risk, soil texture, water holding capacity, nutrient supply – have an impact on forest productivity.

Identifying the mineral soil surface

See also Practical soil sampling in planted forests – soil profile  [266 Kb PDF]

Taking samples for soil chemistry analysis

See also Practical soil sampling in planted forests – soil chemistry [254 Kb PDF]

Soil sampling for bulk density measurement

See also Practical soil sampling in planted forests – soil bulk density [261 Kb PDF]