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;

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;

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, poplars and fodder - Research Brief 10

Poplar and willow provide fodder of sufficient quality and quantity to warrant using then as supplements for feeding to livestock during summer droughts. In addition to the feed quality, the tannins and phenolic glucosides present in the leaves provide pharmaceuticals benefits to stock.

Topics: Fodder; Poplar Information; Trees for the Farm; Willow Information;

Document Type: Research Briefs;

Newsletter - August 2022

The Poplar and Willow Research Trust August 2022 newsletter

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

Document Type: Newsletters;

Effect of giant willow aphid on growth of young willows - Research Brief 08

Two wide-spaced trials were planted on each of two farms in Tararua District to evaluate the effect of sap-sucking Tuberolachnus salignus, giant willow aphid (GWA), on ‘Tangoio’ tree willow growth

Topics: Pests; Giant Willow Aphid Tuberolachnus salignus ; 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;

Climate change and growth of Poplar and Willow trees - Research Brief 04

We evaluated the response of Populus and Salix trees to elevated carbon dioxide (CO2) and temperature, and the interaction of these factors with drought, in a controlled environment.

Topics: Poplar Information; 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;

Steph Sloan Radio Interview

Radio interview with our trustee Steph Sloan and Country Sport Breakfast announcer Lee Piper about the launch of the poplar and willow ambassadors.

Topics: Poplar Information; Willow Information;

Document Type: Audio;

The Ambassadors Podcast

Kate Taylor

An interview with trustee Steph Sloan about the work of the Poplar and Willow Research Trust and the launch of farmer ambassadors around the country.

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

Document Type: Audio;

Newsletter - March 2020

This newsletter providing an update of the work of the Trust and other poplar and willow matters. As we write, extremely dry weather is covering many parts of the country and poplars and willows are playing an important role in offering a valuable feed source. However, we do need to increase awareness of this among farmers.

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

Document Type: Newsletters;

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;

New Willow Identification Key

Landcare Research

A new Salix key is on the Manaaki Whenua website at https://keys.landcareresearch.co.nz/nzsalix/.

Topics: Willow Information;

Document Type: Publications;

Newsletter - December 2018

Once a year the Poplar and Willow Research Trust produces a Newsletter for distribution to partners and associates who are supportive of the work of the Trust.

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

Document Type: Newsletters;

Managing Poplars and Willows: Pollarding Young Willows in a Fodder Block

Safety is paramount when pollarding willows, especially for the first time. Willows can provide decent fodder for stock.

Topics: Fodder; Trees for the Farm; Willow Information;

Document Type: Videos;

Managing Poplars and Willows: Pollarding Older Willows

Older willows can be pollarded to allow them to become a fodder source.

Topics: Fodder; Cultivation; Willow Information;

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;