Manure and Soil Biology

In the Manure and Soil Biology roundtable, our goal was to discover the influence of manure, both positive and negative, on soil biology. We discussed if certain fields will produce more soil biology benefits than others and whether timing of application affects these benefits. Finally, we debated whether we can derive an economic value for manure beyond its nutrient value. Field experiences and observations related to the value of manure as well as what farmers still need related to soil building with manure were reviewed. This dialogue was the second in a four part series discussing the current state of our knowledge relative to manure’s impact on soil health.

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Rhae Drijber, University of Nebraska – Lincoln

Michelle Soupir, Iowa State University

Jonathan Lundgren, Blue Dasher Farms


Other Manure and Soil Health (MaSH) Information

Antibiotic Resistance and Animal Agriculture

This webcast examines the veterinary feed directive and how it impacts animal agriculture as well as discusses the state of the science as it relates to antibiotic resistance. Finally, it busts some myths and reviews “facts” to keep in mind when chatting with livestock producers and the general public.This presentation was originally broadcast on March 25, 2016. More… Continue reading “Antibiotic Resistance and Animal Agriculture”

Winter Manure Application Options

Manure application in winter brings increased risk of runoff reaching surface or groundwater resources. Practical and science-based options exist for managing and reducing the risk for livestock producers who have little or no manure storage, or for situations where a late fall or early freeze limit manure application options. This presentation was originally broadcast on November 21, 2014. More… Continue reading “Winter Manure Application Options”

EPA’s Proposed Waters of the U.S. Regulations

Update: March, 2017. The Trump administration has issued an executive order directing the EPA and Army Corps of Engineers to review the rule and revise or rescind the rule as appropriate. More…

Update: February, 2016. Multiple challenges to the rule in district courts were consolidated in the Sixth Circuit Court of Appeals. Full text of ruling….

Update: October, 2015. A ruling by a district court in North Dakota (August 27) blocked the implementation of the rule. EPA felt that the injunction only applied to the 13 states that were involved in bringing the lawsuit and announced it would apply the rule in the other 37 states as scheduled. On October 9, 2015 a federal appeals court ruled that the injunction applied to all states & territories and that EPA could not implement the rule as they planned.

Update: August, 2015. The finalized rule has been published

In this webcast, Rose Kwok of EPA’s Office of Water, and Ken Kopocis, senior advisor in the EPA’s Office of Water, will explain the proposed rule and discuss what the proposal would mean to the agriculture sector. This presentation was originally broadcast on June 20, 2014. More… Continue reading “EPA’s Proposed Waters of the U.S. Regulations”

Scientific Overview of Agricultural Carbon Research & the Implications for Climate

In response to the rapid pace of global climate change, the work of the Marin Carbon Project and the Carbon Cycle Institute has focused on measuring the effects of rangeland management practices and their implications for carbon sequestration into permanent soil carbon pools. This presentation was originally broadcast on April 11, 2014. More… Continue reading “Scientific Overview of Agricultural Carbon Research & the Implications for Climate”