Abstracts are provided in the language submitted.

One of the main challenges currently faced by Canadian Prairies producers is low nutrient use efficiency by crops due to the losses approximately 40 - 60% of applied nitrogenous fertilizers are lost by leaching, denitrification and volatilization. Previous research has shown that inorganic fertilizer treated with humic substances (humalite) can significantly improve soil nutrient availability and fertilizer use efficiency, nutrient uptake, root and shoot growth, grain nutritional quality and yield. Large deposits of humalite have been discovered in Alberta and are in the holdings of Prairie Mines and Royalty ULC. Although local farmers have been applying this substance in their fields, scientific findings of its benefits to farmers is absent. The objectives of this project were: (1) Determine ideal application rates of humalite in wheat; (2) Evaluate the effects of different humalite application rates on nitrogen use efficiency in different soil zones and plant nutrient uptake; and (3) Assess the effects of humalite on soil health parameters. The ultimate goal is to identify the ideal application rate for humalite and fertilizer, quantify how these rates affects yield and yield in wheat and canola; and the short-term effects on soil health. To achieve this object, field trials were conducted in four sites (3 soil zones) in Alberta. Results indicate that humalite by fertilizer effects on crop yield was different in the different soil zones, humalite was holding applied nutrients in the root zone and high humalite rates significantly increased the amount of active carbon in the grey soil zone.

Dr. Linda Gorim