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Abstract

Dairy slurry is an important plant nutrient source. However, mismanagement (e.g. high application rate) can lead to nutrient losses to the wider environment. There are few data on slurry management and its effect on nitrogen (N) losses specific to Southern Chile, although existing studies suggest...

Author(s)
Salazar, F.; Martínez-Lagos, J.; Alfaro, M.; Misselbrook, T.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Agriculture, Ecosystems & Environment, 2012, 160, pp 23-28
AbstractFull Text

The objective of this work was to quantify the country's NH3 emissions from livestock production. This calculation was based on the mass flow of total ammoniacal nitrogen (TAN). The analysis was performed for all 15 geographical regions in Chile. The definition of livestock subcategories was based...

Author(s)
Muñoz, E.; Navia, R.; Zaror, C.; Alfaro, M.
Publisher
Chilean Society of Soil Science, Temuco, Chile
Citation
Journal of Soil Science and Plant Nutrition, 2016, 16, 1, pp 60-75
AbstractFull Text

Knowledge about the size and cycle of inorganic N pool on grasslands is necessary to develop adequate fertilization strategies and to determine the potential pathways of N losses. The objectives of this study were to: (1) quantify the N mineralization rates in permanent grassland on an Andosol of...

Author(s)
Martínez-Lagos, J.; Salazar, F.; Alfaro, M.; Rosas, M.; Macías, F.
Publisher
Chilean Society of Soil Science, Temuco, Chile
Citation
Journal of Soil Science and Plant Nutrition, 2015, 15, 1, pp 60-75
Abstract

Agriculture is the largest source of ammonia (NH3) emission to the atmosphere, deriving mainly from livestock urine and manures, but fertilizer applications to pastures and crops also represent an important source. In Chile, where agriculture and cattle production are important activities...

Author(s)
Salazar, F.; Martínez-Lagos, J.; Alfaro, M.; Misselbrook, T.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Atmospheric Environment, 2012, 61, pp 395-399
Abstract

Agriculture is the largest source of ammonia (NH3) emission to the atmosphere. Within the agricultural sector, the application of slurry to grasslands as fertilizer is one of the main emission sources. This is a common practice in southern Chile, where most dairy production systems are...

Author(s)
Martínez-Lagos, J.; Salazar, F.; Alfaro, M.; Misselbrook, T.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Atmospheric Environment, 2013, 80, pp 226-231
AbstractFull Text

Most of the studies on nitrogen (N) leaching have been carried out on cut grass, and there is a lack of information on beef grazed grasslands. The objective of this study was to quantify N runoff and leaching losses in beef production systems with two different immediate stocking rates (63 and 191...

Author(s)
Salazar, F.; Alfaro, M.; Ledgard, S.; Iraira, S.; Teuber, N.; Ramírez, L.
Publisher
Chilean Society of Soil Science, Temuco, Chile
Citation
Journal of Soil Science and Plant Nutrition, 2011, 11, 2, pp 97-108
Abstract

This paper presents the first inventory of ammonia emissions from livestock production in Los Lagos and Los Ríos Regions of Chile. The inventory was focused in this area because is where cattle production is concentrated. This study aimed to quantify the amount of N losses due to ammonia...

Author(s)
Martínez-Lagos, J.; Salazar, F.; Alfaro, M.; Misselbrook, T. H.
Publisher
Instituto de Investigaciones Agropecuarias, Chillán, Chile
Citation
Chilean Journal of Agricultural Research, 2010, 70, 1, pp 95-103
Abstract

The main inputs and outputs of nitrogen (N) and phosphorus (P) in soils and swards under typical Southern Chilean conditions were determined between 2004-2005 and 2006-2007 to establish soil and field gate N and P balances under different immediate stocking rates (63 and 191 anim ha-1 d-1) and...

Author(s)
Alfaro, M.; Salazar, F. S.; Oenema, O.; Iraira, S.; Teuber, N.; Ramirez, L.; Villarroel, D.
Publisher
Sociedad Chilena de la Ciencia del Suelo, Valdivia, Chile
Citation
Revista de la Ciencia del Suelo y Nutrición Vegetal, 2009, 9, 1, pp 40-54
Abstract

The effect of soil acidity generated by fertilizer application on the production and nutritional quality of a Lolium multiflorum pasture, was determined. The pasture was grown under high and low soil acidity areas on a Southern Chilean Andisol (March 1994-April 1995). Monoammonium phosphate and...

Author(s)
Mora, M. de la L.; Alfaro, M.; Williams, P.; Stehr, W.; Demanet, R.
Publisher
Sociedad Chilena de la Ciencia del Suelo, Valdivia, Chile
Citation
Revista de la Ciencia del Suelo y Nutrición Vegetal, 2004, 4, 1, pp 29-40
Abstract

The Lakes Region of Chile produces 60% of the country's milk and 45% of its meat. Production is expected to increase in the near future, yet there are few data on the environmental impact of local livestock systems. A field experiment was carried out during 2004 to measure nitrogen (N) runoff and...

Author(s)
Alfaro, M.; Salazar, F.; Iraira, S.; Teuber, N.; Ramírez, L.
Publisher
Ediciones Universidad de Concepción, Chillán, Chile
Citation
Gayana Botanica, 2005, 62, 2, pp 130-138

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