C. B. Gilbertson’s research while affiliated with University of Nebraska–Lincoln and other places

... Formula for calculating annual expenses based on deviation from average yields: $135,402 + «com (bu) -105) x $80.11) + «bean (bu) -35) x $43.68) The gross energy content of feedlot beef cattle manure is 4347 kcal/kg (dry weight basis; Gilbertson et al. 1974). Assuming manure is 80% water, 1 ton (2000 Ib) will have a gross energy of788,706 kcal. ...

Reference:

Evaluating alternative farming systems: A case study for eastern Nebraska

... Based upon this research common characteristics have been published in accepted references from Natural Resources Conservation Service (Table 1), Texas Agricultural Extension Service (Table 2) and Experiment Stations of the North Central Regions land grant universities (Table 3). Original data for many of these reported values is from Linderman and Mielke (1975), Gilbertson et al. (1979), Swanson et al. (1971), , Gilbertson et al. (1975) and Gilbertson et al. (1972). Below Average: No settling facilities between the feedlot and pond. ...

Reference:

Vegetative Treatment Systems for Open Lot Runoff: Review of Literature

... With a precipitation dataset calculated, we then determined what value to use for lot CN to calculate runoff for each event. We collected cattle lot runoff data from 11 published studies (Balogh and Madison, 1985;Clark et al., 1975;Coote and Hore, 1979;Edwards et al., 1986;Gilbertson et al., 1971a;Gilbertson et al., 1979;Gilbertson et al., 1971b;Larson et al., 1976;Madden and Dornbush, 1971;Nienaber et al., 1974;Trooien et al., 2013) representing 21 site years. All studies reported annual precipitation and runoff amounts from a variety of cattle barnyards and feedlots, including paved and earthen lots, in six different states (Minnesota, Nebraska, Ohio, South Dakota, Texas, and Wisconsin) and Canada. ...

Reference:

A New Model for Phosphorus Loss in Runoff from Outdoor Cattle Lots

... The condition that occurs is that people's perceptions and priorities still have differences with the goals. This is shown from the results of research by MacRae [36] that social, cultural, and political aspects have more influence on the success of waste management in Bali when compared to technical and economic aspects. This shows that good governance cannot guarantee the success of a program but is determined by policy actors who are able to support the running of a program. ...

Reference:

Collaborative governance in managing plastic waste in Bali

... The USMARC cattle feedlot was an early example with a precipitation runoff system designed and constructed to contain the 10-yr, 24-hr storm, part of the earliest Nebraska standard. The system, described by Nienaber et al. (1974), was constructed in 1971 to serve south sloping pens and has been in continuous operation since that time ( fig. 2; 43A Ponds). ...

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System design for NMP and NPDES permit application for the U.S. Meat Animal Research Center.

... Early experimental work in the pumping of manure slurries focused on feasibility and a gross measurement of pressure drop, without developing a detailed analysis of the rheological properties of the manure slurry. Rolfes et al. (1977) assessed the friction head loss in beef manure PVC pipelines as a function of flow velocity, total solids (TS) concentration, and pipe size and found that head loss increases with increasing TS. They concluded that water head loss criteria were definitely inadequate for use in designing manure pumping systems. ...

Reference:

An Economic Analysis of Pipelining Beef Cattle Manure

... Unless properly managed, high soil nutrient concentrations in animal congregating areas of animal production sites can become a source for soil and water contamination. The amount and quality of manure accumulating on livestock production sites depends on many variables, including stocking density, length of active period, land gradient, climate, site management practices, and soil type (Gilbertson et al., 1975;Sweeten et al., 1985;Kissinger et al., 2007). Manure harvesting from accumulated areas can lower manure-derived soil nutrient levels. ...

Reference:

Management Practices Affect Soil Nutrients and Bacterial Populations in Backgrounding Beef Feedlot

... Second, the liquid fraction of the slurry infiltrates into the soil carrying the smaller, suspended slurry particles into the soil pores. These suspended particles increase the viscosity of this liquid fraction of the slurry, thus reducing its infiltration into the soil (Bashford et al., 1977;Chen, 1986;Landry et al., 2004). As these effects tend to maintain the slurry NH X -N near the surface, they increase NH 3 volatilization potential. ...

Reference:

Accounting for Surface Cattle Slurry in Ammonia Volatilization Models: The Case of Volt’Air

... With a precipitation dataset calculated, we then determined what value to use for lot CN to calculate runoff for each event. We collected cattle lot runoff data from 11 published studies (Balogh and Madison, 1985;Clark et al., 1975;Coote and Hore, 1979;Edwards et al., 1986;Gilbertson et al., 1971a;Gilbertson et al., 1979;Gilbertson et al., 1971b;Larson et al., 1976;Madden and Dornbush, 1971;Nienaber et al., 1974;Trooien et al., 2013) representing 21 site years. All studies reported annual precipitation and runoff amounts from a variety of cattle barnyards and feedlots, including paved and earthen lots, in six different states (Minnesota, Nebraska, Ohio, South Dakota, Texas, and Wisconsin) and Canada. ...

Reference:

A New Model for Phosphorus Loss in Runoff from Outdoor Cattle Lots

... We also compared how using empirical instead of measured precipitation would impact estimated annual runoff for the study by Nienaber et al. (1974), who monitored runoff from a cattle feedlot in Nebraska during 1971 and1972. For that study, we could not obtain event precipitation data for the exact research location. ...

Reference:

A New Model for Phosphorus Loss in Runoff from Outdoor Cattle Lots