P
Peter van Straaten
Researcher at University of Guelph
Publications - 21
Citations - 696
Peter van Straaten is an academic researcher from University of Guelph. The author has contributed to research in topics: Soil water & Soil fertility. The author has an hindex of 11, co-authored 19 publications receiving 612 citations.
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Mercury contamination associated with small-scale gold mining in Tanzania and Zimbabwe.
TL;DR: In this paper, Gravimetric material flow analyses show that 70-80% of the Hg is lost to the atmosphere during processing, 20-30% are lost to tailings, soils, stream sediments and water.
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Farming with rocks and minerals: challenges and opportunities
TL;DR: In this article, a literature survey of experiences of using multi-nutrient rock fertilizers for soil fertility enhancement from temperate and tropical environments is provided, where the potential of combining organic materials alongside rock fertilizer in soil fertility replenishment strategies is stressed.
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Human exposure to mercury due to small scale gold mining in northern Tanzania
TL;DR: Data from a hair survey of fishermen and farmers confirm that at present, the fish-eating population close to the southern tip of Lake Victoria is at low risk with regard to Hg exposure, and Hg concentration in fish in aquatic bodies close to these camps is determined.
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Improving rock phosphate availability through feeding, mixing and processing with composting manure
Nicholas E. Odongo,K. Hyoung-Ho,Hee-Chul Choi,Peter van Straaten,Brian W. McBride,Dannie Romney +5 more
TL;DR: The results show that P-enriched composting in the presence of wheat straw significantly increased P availability and increased plant growth and there was no additional benefit of first feeding the RP to steers before composting the manure.
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Phosphorus status on Canadian organic farms
TL;DR: For example, this article found that on long-term organic dairy farms in Ontario, most soils tested low to very low in available soil P as measured by a standard soil test.