Dairy Manure and Fertilizer Effects on Microbial Activity of an Idaho Soil

D. D. Tarkalson1, R. Dungan2, D. Bjorneberg2
1USDA-ARS Idaho, 2USDA-ARS
Dairy cows populations over time in Idaho
Milk cows in Idaho over time
  • Manure applications have become a common practice on many fields in parts of Southern Idaho where the dairy industry has grown.  
  • The manure applications have changed the systems.  Observations of crop growth and yield effects have highlighted these changes.   
Past manure applications treatments
Visual differences in sugar beet growth 5 years after last manure application
Spring plant available N prior to sugarbeet crop in 2014 and 2016
Sugarbeet root yields in 2014 and 2016
Spring 2020 selected soil microbial enzyme activity in the 0-6 and 6-14 inch depth.

Abstract

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