Spatial and Temporal Variation in Physicochemical Properties of Dairy Lagoons in South-Central Idaho

doi:10.13031/trans.11991

Cited by 2 publications

(4 citation statements)

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“…Linear regression was performed with SAS (v9.3; SAS, 2008) to relate daily NH 3 emission estimates to both meteorological parameters and lagoon physicochemical characteristics. As the lagoon characteristics changed predictably and slowly over time (Leytem et al, 2017), daily lagoon physicochemical characteristics were calculated by linear interpolation between sampled days.…”

Section: Discussionmentioning

confidence: 99%

“…As the pH increases, there is greater conversion of NH 4 + to NH 3 , which can then be volatilized from the lagoon water. A detailed description of the sampling protocols can be found in Leytem et al (2017), although a brief description follows.…”

Section: Lagoon Sampling and Analysesmentioning

confidence: 99%

“…Analyses were performed as follows: TAN according to Standard Method 4500-NH 3 (Eaton et al, 2005) and TKN according to EPA method 351.2 (USEPA, 1993). Because there were no significant spatial differences in lagoon characteristics with sampling position or depth (Leytem et al, 2017), the data were averaged to produce one daily value. The CV of TAN at each sampling time ranged from 0% to 40%, with 93% of values being less than 10% and only one value greater than 18%.…”

Section: Lagoon Sampling and Analysesmentioning

confidence: 99%

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Ammonia Emissions from Dairy Lagoons in the Western U.S.

Leytem¹,

Bjorneberg²,

Rotz³

et al. 2018

Transactions of the ASABE

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Ammonia (NH 3 ) emissions from dairy liquid storage systems can be a source of reactive nitrogen (N) released to the environment, with a potential to adversely affect sensitive ecosystems and human health. However, little on-farm research has been conducted to estimate these emissions and determine the factors that may affect these emissions. Six lagoons in south-central Idaho were monitored for one year using open-path Fourier transform spectrometry, with NH 3 emissions estimated using inverse dispersion modeling (WindTrax software). Lagoon physicochemical characteristics thought to contribute to NH 3 emissions were also monitored over this period. Average total emissions from the lagoons ranged from 12 to 43 kg NH 3 ha -1 d -1 , or 5.4 to 85 kg NH 3 d -1 . Emissions from the settling basin on one dairy were 30% of the total emissions from the liquid storage system, indicating that basins are important sources of on-farm NH 3 emissions. Emissions generally trended greater during the summer, when temperatures were greater. High wind events and agitation of the lagoons created temporary increases in NH 3 emissions irrespective of temperature. Lagoon physicochemical characteristics, such as total Kjeldahl nitrogen (TKN) and total ammoniacal nitrogen (TAN), were highly correlated with emissions (r = 0.52 and 0.55, respectively). Regression models were developed to predict on-farm NH 3 emissions and indicated that TKN, TAN, wind speed, air temperature, and pH were the main drivers of these emissions. An on-farm N balance suggested that lagoon NH 3 -N losses represented 9% of total N lost from the facility, 65% of total lagoon N, and 5% of dairy herd N intake. A process-based model (Integrated Farm System Model) estimated values for N excretion and NH 3 -N loss from the lagoon within 5% of that measured on-farm. More on-farm research is needed to better refine both process-based models and emission factor estimates to more accurately predict NH 3 emissions from lagoons on dairies in the western U.S.

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Section: Discussionmentioning

confidence: 99%

Section: Lagoon Sampling and Analysesmentioning

confidence: 99%

Section: Lagoon Sampling and Analysesmentioning

confidence: 99%

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Ammonia Emissions from Dairy Lagoons in the Western U.S.

Leytem¹,

Bjorneberg²,

Rotz³

et al. 2018

Transactions of the ASABE

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“…Increasing physical separation of crop and livestock production challenges the sustainable distribution of manure nutrients, but county-level analyses in Iowa showed that all but a few counties maintain sufficient cropland capacity to utilize locally produced manure nutrients (Andersen and Pepple, 2017). Nutrient sampling from dairy lagoons in Idaho revealed seasonally higher N and lower P, K, total solids, and volatile solids in spring than in fall, and higher concentrations of N, total solids, volatile solids, and chemical oxygen demand (COD) from freestall dairies than from dry-lot dairies, but no influence of dairy size (Leytem et al, 2017). Land application methods and timing also affect runoff water quality; loads of dissolved P, total P, and ammonium-N were significantly less after six weeks than at one to three days after application, and loads of dissolved P and total P were less for injection than for broadcast application (Schuster et al, 2017).…”

Section: Livestock Systems Land Application Of Livestock Manurementioning

confidence: 99%

Current Research in Land, Water, and Agroecosystems: ASABE Journals 2017 Year in Review

Douglas-Mankin¹

2018

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Abstract. This article highlights current research into land and water resources, agroecosystems, and agricultural production systems published by the Natural Resources and Environmental Systems (NRES) community of ASABE journals ( and ) in 2017. Context, scope, and key results of the published articles are reviewed and perhaps more importantly areas for increased research attention are recommended. This article describes experimental and modeling advances in hydrology, agroecosystems, climate change effects, soil erosion, agricultural irrigation, agricultural drainage, forest resource management, livestock systems, natural treatment systems, international water issues, and water quality topic areas. Three special collections were published (International Watershed Technology, Crop Modeling and Decision Support for Optimizing Use of Limited Water, and Advances in Drainage). Other focal areas included 14 articles relating to livestock waste management, 13 concerning irrigated agricultural systems, 8 addressing climate change effects on land, water, and agroecosystems, and 16 on various aspects of soil erosion measurement and modeling. Building on the articles reviewed from 2017 and toward a vision of future agroecosystems research, the NRES community of ASABE journals strives to expand its role in making new knowledge accessible to sustain agricultural and natural systems in a changing world. With this goal in mind, recommendations for future research needs are proposed with an emphasis on increased application of remote sensing data to agroecosystems research, improved assessment of agroecosystem resiliency and vulnerability to land and climate change, development of integrated models of agroecosystem services, meeting stubborn water management challenges in agricultural production systems, and focusing on publishing fully reproducible model results. Keywords: Agriculture, Climate change, Composting, Crop models, Crop water use, Crop yield, Drainage, Drought, Environment, Field experimentation, Food, Forest, Greenhouse gas emissions, Hydrologic modeling, Hydrology, Irrigation, Livestock, Manure management, Mode

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Spatial and Temporal Variation in Physicochemical Properties of Dairy Lagoons in South-Central Idaho

Cited by 2 publications

References 24 publications

Ammonia Emissions from Dairy Lagoons in the Western U.S.

Ammonia Emissions from Dairy Lagoons in the Western U.S.

Current Research in Land, Water, and Agroecosystems: ASABE Journals 2017 Year in Review

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