All posts by Leslie Johnson

08Jan/18
Trophic levels of the soil food web

Soil quality impacts of agricultural and municipal biosolids applications

Background Soil health management refers to the preservation and improvement in soil physical, chemical, and biological properties to maximize the productive capacity of soil. Cover crops and reduced tillage are promoted for improving soil health; however,Read More…

01Dec/17
Value of beef open lot manure assuming crop benefits from potassium supplementation and 5% increase in yield. Estimated manure value is $28/ton.

What is the Economic Value of Manure?

Manure has value.  That value may result from improvements in soil quality, increases in yield, and replacement of commercial nutrient required for crop production.   Previous articles on manure’s value have focused on its soil health,  environmentalRead More…

01Nov/17
Photo of rainfall simulation study

Setbacks Reduce the Concentration of Manure Constituents in Runoff

What setback distance is required to reduce the concentration of manure constituents in runoff to background values? John E. Gilley, Aaron J. Sindelar, and Bryan L. Woodbury, researchers with the USDA-Agricultural Research Service, examined the effectsRead More…

01Aug/17
A recently added aggregate of livestock manure (left) versus a heavy soil aggregate of poor structure on the right.

Soil Organic Matter and Its Benefits

Soils of Northern Great Plains are relatively young (11000 to 14000 years old) and have some of the highest organic matter levels (4 to 7%) of all mineral soils in the United States (Overstreet and DeJong-Huges,Read More…

03Jul/17
soil with earth worm

Manure Impact on Soil Aggregation

If manure increases formation of larger (macro) and more stable soil aggregates, several benefits may result for fields fertilized by manure compared to commercial fertilizer including: Reduced runoff and soil erosion; Increased water infiltration into theRead More…

01May/17

Manure and Soil Health Presentations Bring Experts, Give Voice to Wondering Minds

Farmers and ranchers are becoming increasingly aware of the importance of soil quality/health to the productivity and sustainability of their agricultural system. Research and field observations have demonstrated that carefully managed manure applications can contribute toRead More…