Defoliation

A defoliant is any herbicidal chemical sprayed or dusted on plants to cause their leaves to fall off. Defoliants are widely used for the selective removal of weeds in managing croplands and lawns. Worldwide use of defoliants, along with the development of other herbicides and pesticides, allowed for the Green Revolution, an increase in agricultural production in mid-20th century. Defoliants have also been used in warfare as a means to deprive an enemy of food crops and/or hiding cover, most notably by the United Kingdom during the Malayan Emergency and the United States in the Vietnam War.

Wikipedia

Publications

WWF: World Wildlife Fund Canada · 5 June 2023

In brief, while the conservation and restoration of marine ecosystems NCS have the potential to meaningfully contribute to mitigating the biodiversity and climate serve as NCS, blue carbon ecosystems themselves …

location, Eclipse Sound; this near-complete defoliation of kelp forests in some sections of Atlantic (Pratt et al. in press). Despite the extensive defoliation, healthy kelp forests remain which caused extensive


City of Mississauga, Ontario · 14 February 2023 English

It relates the Business Plan & Budget to the City’s Strategic Plan and provides the big picture including total revenues and expenses, the property tax increase required, the capital budget …

its caterpillar stage, can cause dispar severe defoliation of trees 2023-2026 Business Plan & 2023 Budget


TEEB: The Economics of Ecosystems and Biodiversity · 1 August 2022 English

Source: (IBGE 2020), Ecosystem Accounts: Land Use in Brazilian Biomes 2000-2018 The higher absolute totals of natural area reduction were concentrated on the Amazônia and Cerrado biomes (86,2%) Source: (IBGE …

effective rainfall down > Concerning trend is defoliation > Fragmentation remained virtually constant since


TEEB: The Economics of Ecosystems and Biodiversity · 1 August 2022 English

Ecosystem Condition accounts Ecosystem condition • Ecosystem condition: quality of an ecosystem measured in terms of its abiotic and biotic characteristics. [...] • Key role is integrating data • Ecosystem …

effective rainfall down > Concerning trend is defoliation > Fragmentation remained virtually constant since


City of Saskatoon, Saskatchewan · 29 April 2022 English

What does the City consider a boulevard? A boulevard is public land adjacent to private property, such as center medians, the strip of land between the sidewalk and roadway, and …

peeling bark, dying branches and significant defoliation (more than 50 percent of the entire tree). Tree


City of Cambridge, Ontario · 26 April 2022 English

THEREFORE BE IT RESOLVED THAT Council request the Province of Ontario to include energy performance tiers and timelines for increasing minimum energy performance standards step-by-step to the highest energy performance …

severe defoliation. Healthy growing trees can withstand a few seasons of severe defoliation before branch ground surveys to map damaged areas and forecast defoliation for 2022. The results suggest 2022 will be another causing moderate to severe defoliation in some areas. Lighter defoliation is forecasted in some areas information on forest pests and options for reducing defoliation by LDD moth. Ontario’s Invasive Species Centre pest specific forecast surveys to help predict defoliation for future years. The forest health monitoring


CCA: Council of Canadian Academies · 24 January 2022 English

Over the course of the assessment, key guidance and oversight were provided by the CCA’s Board of Directors, Scientific Advisory Committee, and founding Academies: the Royal Society of Canada, the …

moth had established itself to the point where defoliation was extensive and caterpillars were numerous were successful — few moths were found, and defoliation was minimal — so controls stopped in 1899. By broadleaf trees, and there is evidence of LD moth defoliation in conifer species, including eastern white pine (McManus & Csóka, 2007). Most recently, LD moth defoliation increased from approximately 47,000 ha in Ontario in Quebec and has led to moderate to severe defoliation in more than 7 million ha of forest as of 2017


City of Ottawa, Ontario · 2022 English

INSTALLATION Have you noticed caterpillars or defoliation on your trees? Installing a burlap trap can can reduce caterpillars and prevent defoliation. Spongy moth caterpillars are fully grown and noticeable


MEI: Montreal Economic Institute · 30 November 2021 English

Economic Note on forestry innovations that have generated substantial environmental and economic benefits for Quebec

and Parks since 2015, with the goal of having Defoliation by insects:5,551,793 hectares 529,000 km2 of


City of Guelph, Ontario · 17 November 2021 English

For the purposes of this report the lands in total will be referred to as the ‘subject property’ or the ‘Arkell Road properties’, while the portion of the lands being …

hedge at fenceline; thin crown; light insect defoliation. 53 Freeman's Maple Acer X freemanii Native 6 Improbable Good Retain No Very minor insect defoliation. 193 Balsam Poplar Populus balsamifera Native hedge at fenceline; thin crown; light insect defoliation. 258 White Spruce Picea glauca Native 24.1 1 Improbable Good Retain No Very minor insect defoliation. 3 291   300 101 111 (335.80)T/W=(333.91) Improbable Good Retain No Very minor insect defoliation. 193 Balsam Poplar Populus balsamifera Native


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