Document Library: Erosion Control

An index to our poplar and willow documentation

Poplars and willows as bioengineering solutions – learnings from Cyclone Gabrielle

McIvor I, Heslop I, Brooks F

A survey of the bioengineering works (primarily mature willows and poplar trees) on a) the Tūtaekurī River within the Heretaunga Plains Flood Control Scheme and b) the Te Ārai River from Gisborne City water intake to its integration into the Waipoua Flood Protection Scheme was conducted 13 months after Cyclone Gabrielle.

Topics: Erosion Control; Rivers; Poplar Information; Willow Information;

Document Type: Publications;

Pole planting of poplar and willows for erosion prevention on Wairarapa farms

Pole planting of poplars and willows is one of the ways Greater Wellington helps to prevent erosion. Almost one million trees, shrubs and grasses will be planted across the Wellington Region in 2023.

Topics: Erosion Control; Poplar Information; Willow Information;

Document Type: Videos;

How poplar trees influence water flow on slopes - Research Brief 19

Water flow on pastoral slopes following rainfall transfers sediment and contributes to slope erosion. Pasture cover reduces flow rate allowing more time for water absorption. Trees also influence water flow in ways that complement and enhance the effect of pasture.

Topics: Erosion Control; Farms; Poplar Information; Trees for the Farm;

Document Type: Research Briefs;

Pollarding wide-spaced poplar trees on pastoral hillslopes alters root development - Research Brief 15

Topics: Erosion Control; Farms; Poplar Information; Trees for the Farm;

Document Type: Research Briefs;

Root development in poplar and willow clones (a pot study) - Research Brief 05

A range of willow (Salix) and poplar (Populus) clones were used in the study. This information is important for river engineers, land managers and landowners seeking to match planting material to situation.

Topics: Erosion Control; Rivers; Root Systems; Poplar Information; Willow Information;

Document Type: Research Briefs;

Effect of slope position on poplar growth - Research Brief 13

Trunk diameter data from two wide spaced poplar trials planted in rows, with within row spacing of 10 m, at 20 m apart up a slope are used to provide insights into how slope position affects poplar growth.

Topics: Erosion Control; Root Systems; Cultivation; Poplar Information; Trees for the Farm;

Document Type: Research Briefs;

Influence of soil type on poplar root development - Research Brief 12

Poplar (Populus deltoides × nigra) Trees were grown from 3 m-long poles on pastoral hill slopes in three different soil types, pumice, sandy loam and clay loam, differing in their bulk density.

Topics: Erosion Control; Root Systems; Cultivation; Poplar Information;

Document Type: Research Briefs;

Willows at work in the catchment - Research Brief 11

Natural water catchments extend from mountains to sea, collecting water on the way. The erosive power of flowing water increases during periods of high water runoff, e.g. rainstorms. The heavier the rainfall the greater the water volumes and velocity the greater the erosive forces.

Topics: Erosion Control; Farms; Rivers; Willow Information;

Document Type: Research Briefs;

Willows affect pastoral soil properties - Research Brief 06

Willow trees planted for soil conservation confer beneficial effects on the soil through canopy litter, roots and shade.

Topics: Erosion Control; Farms; Trees for the Farm; Willow Information;

Document Type: Research Briefs;

Poplars and Willows as soil conservation trees in New Zealand - Research Brief 01

This study investigated farmers’ perspectives and experiences of poplar and willow trees planted on their farms for erosion reduction.

Topics: Erosion Control; Poplar Information; Trees for the Farm; Willow Information;

Document Type: Research Briefs;

Root excavation of Salix matsudana × alba ‘Moutere’ willow on the Hutt River 2018

Ian McIvor (Plant & Food Research) and Mike Jensen (Greater Wellington Regional Council)

Root excavation of Salix matsudana × alba ‘Moutere’ willow on the Hutt River, Wellington, New Zealand and on the Rangitikei River, Ohakea, New Zealand

Topics: Erosion Control; Rivers; Root Systems; Willow Information;

Document Type: Publications;

Poplars and willows in the Waitetuna Valley

Kate Taylor

Trees of all ages and species cover Mike and Madeline Moss’s Raglan farm… helping promote the message of planting the right tree in the right place. Journalist Kate Taylor visited on an overcast winter’s day to see for herself.

Topics: Erosion Control; Farms; Trees for the Farm;

Document Type: Publications;

Early root development in 'Tangoio' tree willow planted as poles

McIvor I, Jones T, Ward R

Several studies have reported on root development of poplars of various ages growing on pastoral slopes but little is known of root development of willows grown on pastoral hillslopes. This report presents new information about root development in willow trees grown from poles.

Topics: Erosion Control; Root Systems; Willow Information;

Document Type: Publications;

Shelter and riparian belts on farms

Ian McIvor

Shelterbelts and riparian buffers have many advantages on farms

Topics: Erosion Control; Rivers; Trees for the Farm;

Document Type: Presentations;

Pakaraka Station Field Day Report 2018

The multiple benefits of poplars and willows on hill country farms have been shared at a field day in Wairarapa.

Topics: Erosion Control; Farms;

Document Type: Videos;

Hill Country Heroes

The New Zealand Poplar & Willow Trust corporate document explains the trust and the importance of poplar and willows in New Zealand

Topics: Erosion Control; Poplar Information; Willow Information;

Document Type: Publications;

Factsheet 6: Benefits from using poplars and willows on NZ dairy farms

Poplars and Willows are extremely versatile trees that can deliver significant cost savings and provide excellent support in achieving environmental outcomes for dairy farmers.

Topics: Effluent Management; Erosion Control; Poplar Information; Willow Information;

Document Type: Fact Sheets;