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24, 48 and 72 hour contact toxicity test of peppermint (Mentha piperita), garlic (Allium sativum L.) and lemon (Citrus limon L.) essential oil on the long-tailed mealybug (Pseudococcus longispinus)
Download2015-01-04
The long-tailed mealybug (Pseudococcus longispinus) is a major agricultural pest to over 26 different plant species. They proliferate both sexually and parthenogenetically, taking approximately 4-6 weeks to reach reproductive maturity. Each adult female can produce 75 to 200 live-young over an...
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Determining the viability of salvaged organic peat soil using peat-mineral mixes and surrogate growth species Poa protensis and Lolium multiform
Download2015-12-04
Peat-mineral mixes (PMM) have been shown and recommended as a suitable reclamation material when upland boreal forest soil (LFH) is not available or cost-prohibitive. During the construction of some wellsites an engineered pad is constructed above the original peat soils. During the reclamation...
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2015-02-04
Evidence of increased presence of estrogen in aquatic environments is being found in a wide variety of organisms. Estrogens are powerful endocrine disruptors with the ability to not only mimic endogenous hormones but also alter the overall hormonal metabolism in many of these organisms. The...
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The effects of grazing on soil physical and chemical properties and plant diversity in North-Central Alberta
Download03/28/2013
The grazing of livestock is often harmful, causing degradation of the land, but it can also act as a natural disturbance that contributes to the health of an ecosystem. This suggests that the effects of grazing involve interactions between the grazing regime and the properties of the particular...
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Water quality of the North Saskatchewan River and its four tributaries in Alberta's Industrial Heartland
Download2015-02-04
Monitoring the quality of the water in the North Saskatchewan River and its tributaries is critical to ensure compliance with provincial and federal guidelines related to water quality; for the benefit of humans, other animals and the ecosystems surrounding these areas. The human population and...