Haloxyfop EE - selective control of pampas grass in New Zealand commercial forests

Saville, G.W.; Watson, M.J.; Sharpe, Christopher J.

doi:10.30843/nzpp.1986.39.9434

Cited by 2 publications

(2 citation statements)

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“…The persistence of L. pedunculatus under P. radiata has been demonstrated in large-scale oversowing and grazing schemes at Maramarua, Waiuku and Kaingaroa forests in the North Island established between 1981 and 1985 (Brown 1988;Dale & Todd 1988;West et al 1988;West et al 1991;West & Dean 1992). N fixation in these oversowing trials was not quantified but appeared substantial as tree basal area responses of 16% occurred over a period of eight years in the Kaingaroa trial for the ungrazed L. pedunculatus treatment (West & Dean 1992).…”

Section: Exotic N-fixing Understorey Plants and Shrubsmentioning

confidence: 99%

Use of nitrogen-fixing plants to improve planted forest soil fertility and productivity in New Zealand: A review

Reid,

Wigley,

Nusrath

et al. 2024

NZJFS

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Background: Planted forests with low fertility soils are likely to require increased inputs of nitrogen (N) to satisfy increasing productivity demands. The use of N fertilisers will become more challenging due to their increasing cost and the risk of unwanted environmental impacts. Nitrogen-fixing plants may provide an alternative option to chemical fertilisers that is not only cheaper but has a lower greenhouse gas footprint. Methods: Information on N-fixing plants was collated from available literature, focusing on species previously associated with planted forests as well as other exotic N-fixing trees and New Zealand native plants not used in commercial planted forests. Results: Benefits to planted forest growth in New Zealand by N-fixing plants have been proven in only a few cases. Lupinus arboreus Sims was used in the 1970s and 1980s to increase N inputs in a planted Pinus radiata D.Don coastal forest, and improved P. radiata productivity was demonstrated. Productivity gains ceased when a blight disease infected the lupin population. Many N-fixing plants have been shown to tolerate low fertility soils and establish in planted forests, but there is limited information on their N contribution to the soil, and whether this N contribution increases P. radiata productivity. Such N-fixing plants include Lotus species, clover (Trifolium species) and weeds such as gorse (Ulex europaeus L.) and broom (Cytisus scoparius (L.) Link), which are commonly found in association with P. radiata forests. New Zealand native N-fixing shrubs may be suitable but there is limited information available describing N-fixation or forestry management for native plant species. Conclusions: Nitrogen-fixing plants are a valuable resource, which when managed properly could be used for enhancing productivity. Issues with pests and disease, and limited knowledge regarding the management of N-fixing species, restricts adoption in planted forests. Well-designed research is needed to assess impacts on whole forest system N cycling as well as selection of appropriate plant species for use in planted forests without unintended consequences such as competition for soil moisture or light. This research needs to be integrated with forest management and delivered as practical options to ensure success.

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Section: Exotic N-fixing Understorey Plants and Shrubsmentioning

confidence: 99%

Use of nitrogen-fixing plants to improve planted forest soil fertility and productivity in New Zealand: A review

Reid,

Wigley,

Nusrath

et al. 2024

NZJFS

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“…Alternatively, herbicides can provide a cost-effective control option where mechanical methods are not feasible. Most herbicide testing on jubatagrass has been conducted in Australia and New Zealand (Davenhill 1988;Harradine 1991;Saville et al 1986), but some of the compounds shown to be effective are not registered for wildland use in California (e.g., clethodim and haloxyfop). Although imazapyr is registered for use in California, it has not yet been evaluated for jubatagrass control in the United States.…”

Section: Jubatagrass (Cortaderia Jubata) Control Using Chemical and Mmentioning

confidence: 99%

Jubatagrass (Cortaderia jubata) Control Using Chemical and Mechanical Methods

DiTomaso

Drewitz

Kyser

2008

Invasive plant sci. manag.

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Jubatagrass is one of the most invasive plants along the California and southern Oregon coast. It establishes dense populations that can severely impact native plant diversity and conifer seedling recruitment following forestry operations. This goal of this study was to evaluate the effectiveness of both manual removal and several herbicide control options and application techniques. In addition, a cost analysis was also conducted for the most successful herbicide control methods. Results demonstrate that mechanical removal through digging is effective, although labor intensive. Among the herbicides tested, glyphosate applied as a high-volume (spray-to-wet) application (0.6% ae) in early summer, low-volume application (2.4% ae) in early summer or fall, and ropewick technique in early summer or fall (> 9.9% ae) all provided ≥ 88% jubatagrass control, but the low-volume treatments were the most cost effective. Although the graminicide sethoxydim at the highest rate (0.36% ai) did not give effective control, fluazifop applied in the fall in a low-volume treatment (0.98% ai) gave 87% control of jubatagrass. Imazapyr gave some level of control but does not appear to provide an economical option for jubatagrass management. Results of this study demonstrate that in addition to the more conventional methods of mechanical removal and spray-to-wet glyphosate (0.6% ae), control of jubatagrass can also be equally or more effective with low-volume and ropewick applications of glyphosate.

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Haloxyfop EE - selective control of pampas grass in New Zealand commercial forests

Cited by 2 publications

References 0 publications

Use of nitrogen-fixing plants to improve planted forest soil fertility and productivity in New Zealand: A review

Use of nitrogen-fixing plants to improve planted forest soil fertility and productivity in New Zealand: A review

Jubatagrass (Cortaderia jubata) Control Using Chemical and Mechanical Methods

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