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Full-Text Articles in Life Sciences
Nitrogen Transfer From Cover Crops To The Subsequent Grain Crop And The Influence Of Variability In Winter Conditions, Spencer Heuchan
Nitrogen Transfer From Cover Crops To The Subsequent Grain Crop And The Influence Of Variability In Winter Conditions, Spencer Heuchan
Electronic Thesis and Dissertation Repository
Cover crops, which are used to provide ground cover after the harvest of the grain crop, can potentially improve the sustainability of agroecosystems by reducing nutrient losses. However, few data are available to document the extent to which cover crops improve both the retention of soil nitrogen (N) and the transfer of this N to the grain crop. The efficiency of this N transfer may be further influenced by variation in winter soil temperature; for example, reduced snow cover can increase the frequency and intensity of soil freezing, which can affect the survival of cover crops and the timing of …
"Biology 4920g: Benefits Of Ecological Restoration Techniques", Umama Karim, Olivia Tran, Winston Herold
"Biology 4920g: Benefits Of Ecological Restoration Techniques", Umama Karim, Olivia Tran, Winston Herold
Community Engaged Learning Final Projects
No abstract provided.
Extent, Characteristics And Downstream Effects Of Stream Enclosure In Southwestern Ontario, Katie L. Stammler
Extent, Characteristics And Downstream Effects Of Stream Enclosure In Southwestern Ontario, Katie L. Stammler
Electronic Thesis and Dissertation Repository
In a 16000 km2 area of southwestern Ontario, almost 15% of all streams have been enclosed (buried) largely for agricultural purposes. ArcGIS was used to characterize the natural features of catchments and to calculate enclosedness (proportion of stream network enclosed; x̅ = 16.5%, n = 10106). Catchments with the highest enclosedness received >990 mm of precipitation annually and had high drainage density (>1.9 km/km2), while catchments with the lowest enclosedness receivedannually, were characterized by clay and undrumlinized till plains and had relatively shallow water tables (m). These natural features influence where enclosure is likely to occur, …