Impact of long-term manure application on soil macronutrient levels in Southern Alberta

Autor:	Simpson, Lisa G
Rok vydání:	2010
Předmět:	Farm manure Environmental aspects Alberta Southern Research Manure handling Soils Quality Nitrogen content Potassium content Phosphorus content Dissertations Academic
Druh dokumentu:	Diplomová práce
Popis:	The role of manure applications on soil nutrient dynamics in years after manure applications cease has not been extensively studied. An investigation of two long-term manure trials in the Battersea Drain watershed in southern Alberta was undertaken in 2004 to determine changes in soil nutrient status three years after the initial study was completed. The investigation of the nutrient status of an intensive livestock operation was another component of the study. There was a significant decrease in levels of soil nitrogen, phosphorus and potassium in the plots that received manure application rates over 60 Mg ha-1. The nutrient status of the farm showed a net export of nitrogen and an accumulation of phosphorus and potassium in the soil. Recommendations for alternate methods for handling manure were presented. x, 120 leaves : ill (some col.), col. maps ; 29 cm
Databáze:	Networked Digital Library of Theses & Dissertations
Externí odkaz:	http://hdl.handle.net/10133/3098 Zobrazit plný text záznamu