Document Library: Cultivation

An index to our poplar and willow documentation

Key to poplars & willows in New Zealand

Poplar and willow identification is often difficult, even with experience, mainly because many of those commonly cultivated are cultivars and clones, often of interspecific hybrids. They may even share the same parents and differ only slightly in appearance. This key is a web app or e-guide that can be used online or offline. To use it offline you will need to follow the instructions carefully and check that it works offline before you leave your network connection.

Topics: Identification guides; Cultivation;

Document Type: Keys;

Old Willow Identification Key

Topics: Identification guides; Cultivation;

Document Type: Keys;

Do I pollard my poplars? - Research Brief 17

What is pollarding? Pollarding is reducing a tree to a stump by removing all branches. For poplars on farms the stump is left at 2 m height so animals cannot eat off the new shoots.

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

Document Type: Research Briefs;

Effect of fertilization on growth of poplars established from poles on farmland - Research Brief 16

A single deposit of fertiliser, either N (80g urea), P (180g superphosphate) or both was supplied at 30 cm upslope of the pole and at 15 cm depth to ‘Veronese’ poplar trees on sloping pastoral land two months after the trees were planted as poles.

Topics: Cultivation; Nutrition and Fertiliser; Poplar Information; Trees for the Farm;

Document Type: Research Briefs;

Influence of tree shading by Populus ×euramericana ‘Veronese’ - Research Brief 02

We measured and modelled pasture production over a 10-month period under poplar trees aged either 11 or 22 years (TP) and in open pasture (OP), to determine the effect of spaced conservation trees on pasture production.

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

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;

Poplar trees and soil properties - Research Brief - 07

This study investigated the effects of poplar tree spacing on soil properties (infiltration rate, bulk density, soil moisture content and soil organic matter content) in two Nelder tree plots, with different soil types.

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

Document Type: Research Briefs;

Managing Poplars and Willows: High Pruning Poplars with a Mechanical Pole Saw

How and why to high prune poplar trees.

Topics: Cultivation; Poplar 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;

Killing old poplar trees using chemicals

Ian McIvor and Carlo van den Dijssel

Large or old poplar trees planted for soil conservation and now considered a safety risk can be poisoned, killed and left standing using appropriate herbicide applied to the conducting tissue in the trunk.

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

Document Type: Publications;

Managing Poplars & Willows: Re-Ramming Recently Planted Poles

Poplar poles sometimes require re-ramming as the summer progresses after recent planting. Re-ramming helps secure the pole and enhance root contact with the soil.

Topics: Cultivation;

Document Type: Videos;

Managing Poplars & Willows: Form-Pruning Poplars

Poplars should be form-pruned. Single stems are healthier with greater longevity, allow for better pasture growth and are more likely to produce millable logs.

Topics: Cultivation;

Document Type: Videos;

Managing Poplars & Willows: High-Pruning Poplars

Poplars may benefit from high pruning to increase their health and longevity, encourage pasture growth and to produce millable logs.

Topics: Cultivation;

Document Type: Videos;

Managing Poplars & Willows: Pollarding Willows from Within the Tree

Pollarding willows is useful to manage tree size when producing fodder for stock and producing planting poles. Safety is a key issue.

Topics: Fodder; Cultivation;

Document Type: Videos;

Managing Poplars & Willows: Pollarding Willows from a Tractor Mounted Box

A tractor mounted bin is a useful way to quickly and easy way to pollard willows on the farm, particularly in flat to easy country. Safety is paramount.

Topics: Fodder; Cultivation;

Document Type: Videos;

Planting Poplars & Willows: Choosing the Best Poles

The best choice depends on your requirements. Get good advice on choosing the right poles in terms of the right size and variety.

Topics: Cultivation; Purchasing Poles;

Document Type: Videos;

Planting Poplars & Willows: Assessing the Site

Learn how to assess hill country sites and place poles for best effect to reduce erosion.

Topics: Cultivation;

Document Type: Videos;

Planting Poplars & Willows: Successful Planting

Tips for storage, treatment and planting of poplar and willow poles for successful planting.

Topics: Cultivation;

Document Type: Videos;

Growing Poplar and Willow Trees on Farms

Guidelines for Establishing and Managing Poplar and Willow Trees on Farms Compiled and Prepared by the National Poplar and Willow Users Group as part of the Sustainable Farming Fund’s Poplar & Willow Project (Grant No. 04/089)

Topics: Cultivation; Trees for the Farm;

Document Type: Publications;