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Evaluation of the anti-oxidant ethylene diurea (EDU) as a protectant against ozone effects on crops (growth chamber trials)

Description

Results of a field study conducted in the summer of 2000 showed that when the antioxidant ethylene diurea (EDU) was applied to crops, there were increases in several parameters. The next step was... More ≫

Description

Results of a field study conducted in the summer of 2000 showed that when the antioxidant ethylene diurea (EDU) was applied to crops, there were increases in several parameters. The next step was to verify whether the effects of EDU resulted from EDU-mediated protection against ozone or from plant growth promoting effects of EDU that are independent of ozone. A series of controlled environment trials were designed to test this hypothesis.

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Evaluation of the anti-oxidant ethylene diurea (EDU) as a protectant against ozone effects on crops (field trials)

Description

Ozone is an important phytotoxic gaseous pollutant and is known or suspected to cause injury in crops, including yield reductions. Studies have been conducted using the antioxidant EDU (ethylene... More ≫

Description

Ozone is an important phytotoxic gaseous pollutant and is known or suspected to cause injury in crops, including yield reductions. Studies have been conducted using the antioxidant EDU (ethylene diurea) in programs aimed at the quantification of the effects of ozone on vegetation. For the present study, a protocol making use of EDU as an antioxidant was designed and implemented at a site near the city limits of Fort Saskatchewan, Alberta, an area having elevated ozone levels relative to other areas of the province.

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Pesticides in ambient air in Alberta

Description

During this study pesticides were measured at four selected sites. These sites were chosen in consultation with Alberta Environment personnel based on various criteria including geographical... More ≫

Description

During this study pesticides were measured at four selected sites. These sites were chosen in consultation with Alberta Environment personnel based on various criteria including geographical location in the province, pesticide sales data from across the province and use patterns in various pesticides used in the province to control target insects, weeds and plant diseases.

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Ozone protection in plants : the potential use of chemical protectants to measure atmospheric oxidant damage in Alberta crops

Description

This report was commissioned to provide a review and interpretation of the scientific literature that describes the use and effects of chemical ozone protectants. The authors of this report were... More ≫

Description

This report was commissioned to provide a review and interpretation of the scientific literature that describes the use and effects of chemical ozone protectants. The authors of this report were asked to determine if there was sufficient information available on these substances to warrant a field evaluation of their use. This was done as part of Alberta Environment's efforts to determine if ozone has the potential to cause negative (or positive) effects on plants in the province, with a focus on agricultural crops.

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Overview on particulate matter

Description

The purpose of the literature search is to review and comment on the available information on particulate matter source emission profiles and source apportionment methodology, and to identify data... More ≫

Description

The purpose of the literature search is to review and comment on the available information on particulate matter source emission profiles and source apportionment methodology, and to identify data gaps that may require further field studies. This report has two parts. The first part presents a detailed description of the sampling and analytical methodologies, while the second part concentrates on a brief description of the common apportionment studies with emphasis on the chemical mass balance, and a compilation of source apportionment studies performed in Canada and around the world.

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