Impact of Animal Manure and Organic Biosolids on Properties Contributing to Soil Health

The high concentration of organic carbon (C) and plant essential nutrients in manure and organic biosolids make them excellent fertilizers. However, manure is greatly underutilized as a fertilizer; only about 22% of the manure produced worldwide is applied as fertilizer (FAO 2018). This underutilization can yield regional nutrient imbalances when inorganic fertilizers are imported to meet crop nutrient needs that locally produced fertilizers could supply.

Manure and Cover Crops

In the Manure and Cover Crops roundtable, our goal was to discover whether manure and cover crops have complementary benefits related to soil quality. We debated if certain fields will produce more complementary benefits than others and whether timing of application and sampling affects these benefits.…

Manure and Soil Erosion, Runoff, and Losses

In the Manure and Soil Erosion, Runoff, and Losses roundtable, our goal was to discover the influence of manure on soil and runoff. We discussed if certain fields will produce more environmental benefits than others and whether timing of application affects these benefits. Finally, we debated whether we can derive an economic and environmental value for manure beyond its nutrient value, due to improved moisture retention and decreased erosion.…

Manure and Soil Health Testing

In the Manure and Soil Health Testing roundtable, our goal was to discover what current soil health tests help to quantify manure impacts on soil characteristics, thus determining which soil test is the best indicator and best value. We debated which types of fields might benefit most from manure used to improve soil health and procedures for collecting samples for soil health tests that would best recognize results from use of manure.…

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.…