All posts by Leslie Johnson

03Oct/17
photo of sand recovery system in Iowa

Can application of sand laden manure impact soil texture?

What does soil texture have to do with manure? Sand bedding has become a popular choice at many dairies due to the cow comfort and health benefits it offers. A question raised at manure application time is how does sand in the manure impact the health of my soils? While using sand laden manure as a fertilizer source does add sand to the soil, the change is small and would take about 100 years for a silt loam soil to see a change in soil texture. Continue reading

01Sep/17

The Soil Health Institute and the Water-Soil Health Connection

The Soil Health Institute (SHI) was created in 2015 to “Safeguard and enhance the vitality and productivity of soil through scientific research and advancement.” As the independent, non-profit organization charged with coordinating and supporting soil stewardship and advancing soil health, the SHI is focused on fundamental, translational, and applied research and ensuring its adoption. Enhancing soil health allows us to improve water quality, increase drought resilience, reduce greenhouse gas emissions, improve farm economies, provide pollinator habitat, and better positions us to feed the nine billion people expected by 2050. Continue reading

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, 2009). However, continuous cropping, poor management practices and loss of topsoil have adversely affected the soil organic matter levels. Continue reading

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 the soil possibly leading to greater drought tolerance; and
  • Partial offsetting of higher soil P levels resulting from manure application and limiting P loss to local surface water.

Continue reading

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 to improved soil quality with limited environmental and social risks. However, a comprehensive assemblage of outputs and conclusions from research studies, field trials, soil labs databases, and other sources has never been developed. Continue reading

10Apr/17
fertilizer treatments

Utilizing composted beef feedlot manure in cropping systems

In 1987, a long-term cropping systems study started at the NDSU Carrington Research Extension Center.  Three sets of 4-year crop rotations are replicated three times each year. The ninth cycle ended in 2016.  This article will discuss some of the effects of using composted beef manure on soil properties and selected crop yields Continue reading