Soil & Water Management

Various soil and water management practices exist which will minimize soil loss and evaporative water loss, while providing a good environment for crop establishment.

Tillage Concepts

Tillage of the soil has been used to prepare a seedbed, kill weeds, incorporate nutrients, and manage crop residues. The goal of the tillage system has been to provide a proper environment for seed germination and root growth for crop production.

Soil Structure

Soil is much more than the individual particles of sand, silt, and clay. Ideally, the soil should be one-half solid materials (sand, silt, clay, nutrients, minerals, organic materials, and biological life) and one-half pore space (half of that containing water and the other half being air space). Biological life and organic matter provide the "glues" to create soil aggregates, forming soil structure.

Residue Management

The tilled plots in the foreground of this photo had considerable soil loss and runoff during intense spring rains. The tilled soil surface was susceptible to raindrop impact, causing erosion and surface crusting. The crop residue on the no-till plots in the background absorbed raindrop impact and allowed more water to infiltrate into the soil. With the improved soil structure, the crop is healthier in the no-till.

Soil Management for Water Conservation

Improved water infiltration, less runoff and reduced evaporative losses in no-till systems can save from 5 to 12 inches per year, making more water available for crop production. The tilled grain sorghum on the right yielded only 61 bu/A in a dry year while the no-till on the left yielded about 121 bu/A.

Building Soil Organic Matter Takes Time

Our “instant” culture gravitates to testimonials about how to rapidly increase soil organic matter by 1% within 1 to 3 years. Conversations with lenders and landlords regarding rewards on manure applications and multi-species cover crops investments would likely be easier if financial rewards or measured soil physical properties came quickly.

Manure and Mulch are Teaming Up

Cedar trees are spreading into grasslands and reducing forages that support cattle grazing. The Nebraska Forest Service is promoting management practices to keep the trees from spreading outside of their usual habitat and into grasslands and areas along the banks of rivers and streams (called ‘riparian forests’). So what do cedar trees have to do with manure? Since 2015, two resourceful farmers have generously given up a few acres of their fields for UNL researchers to test various applications of mulch alone or co-mingled with cattle or swine manure.

Manure Applications Prior to Planting

Spring manure applications may provide environmental and crop production advantages compared to fall manure applications. These benefits include reduced nitrogen leaching, increased crop yields, and higher phosphorus and potassium nutrient soil storage.

Why does groundwater nitrate vary so much across Nebraska?

Have you ever wondered why groundwater nitrate maps show so much variation across Nebraska? Or why wells near to your own tested well have such different nitrate levels? The answer has three parts. Nitrate in groundwater varies from place to place because of differences in:

No-till, Cover Crops, And Planned Grazing Systems Workshop to be held in Norfolk February 12th

If you are interested in learning more about Soil Health, Cover Crops and Nitrogen Management consider attending the No-till cover crops grazing workshop held by the Bazile Groundwater Management Area, Lower Elkhorn Natural Resource District and the NRCS in Norfolk at the Lifelong Learning Center. The workshop will run from 9:00 a.m. to 3:30 p.m. with lunch provided by the Bazile Groundwater Area NRDs.

Soil sampling for better fertilization decisions

Recommendations for collecting soil samples to ensure the quality results needed for good management decisions about fertilizer, manure and lime application rates.

Various soil and water management practices exist which will minimize soil loss and evaporative water loss, while providing a good environment for crop establishment.