Sediment and nutrient losses from exoticPinusplantation management operations under simulated rainfall

Understanding the process by which nutrients and solids enter waterways from pastures in the Great Lakes district, New South Wales, Australia, may assist in maintaining water quality to ensure ongoing environmental and economic sustainability of the region. Rainfall simulations, using a 100-year return storm event, were conducted to determine nutrient and suspended solid concentrations in the runoff of 8 pasture sites in 3 of the catchments in the district. On 5 of the 8 sites, considerable concentrations of N or P were mobilised during the simulated rainfall event, but average nutrient concentrations and total loads across all sites were relatively low and similar to other studies of nutrient runoff from pastures. In addition, low runoff coefficients indicated that runoff is probably not the major pathway for nutrient losses from pasture in this area. Overall, rainfall runoff responses at the sites were similar in the 3 catchments. In contrast, the results suggest that, despite generating more runoff, the sites in the Wang Wauk catchment generated less nutrients in runoff than the sites in the Wallamba and Myall catchments. There was no difference in total suspended solids loads for the sites analysed by catchment. Relationships between soil physical and chemical characteristics and total nutrients loads or cumulative runoff were not strong.

Download Full-text

Nutrient losses due to water erosion using simulated rainfall in southern Brazil

DYNA ◽

10.15446/dyna.v85n206.71084 ◽

2018 ◽

Vol 85 (206) ◽

pp. 236-241 ◽

Cited By ~ 1

Author(s):

Jeane Cruz Portela ◽

Neroli Pedro Cogo ◽

Jacques Carvalho Ribeiro Filho ◽

Letícia Sequinatto ◽

Rafael Oliveira Batista ◽

...

Keyword(s):

Water Erosion ◽

Simulated Rainfall ◽

Southern Brazil ◽

Nutrient Losses

La erosión es la principal forma de degradación en el mundo, en consecuencia de la pérdida de suelo, agua y nutrientes, provocando daños directos e indirectos. El objetivo de este trabajo es cuantificar las pérdidas de N, P y K por erosión hídrica en condiciones de lluvia simulada mediante la aplicación de seis pruebas de erosión en cultivo continuo de especies de ciclo estacional, incluyendo cultivos aislados y cultivos intercalados. El estudio se llevó a cabo en el campo en la Estación Experimental de Agronomía en Eldorado do Sul (RS), Brasil, en un Argisol Rojo Distrófico típico. Para el análisis de la pérdida de nutrientes, se aplicaron seis ensayos de erosión con lluvia simulada a los tratamientos entre finales de octubre y mediados de diciembre, utilizando el simulador de lluvia con brazos giratorios de Swanson. Las pérdidas de N y P se vieron influenciadas por las condiciones de la superficie, con la eliminación parcial de los residuos del cultivo y la no movilización del suelo. La excepción fue K, debido a su alta solubilidad en el suelo con baja actividad coloidal, que se perdió fácilmente en la escorrentía superficial del agua del suelo, independientemente de la cobertura total de la superficie del suelo por los residuos de los cultivos.

Download Full-text

Nutrient Losses in Runoff from a New Golf Course

World Environmental and Water Resources Congress 2008 ◽

10.1061/40976(316)431 ◽

2008 ◽

Author(s):

Steve Starrett ◽

Yunseng Su ◽

Travis Heier ◽

Jamie Klein ◽

Jeff Holste ◽

...

Keyword(s):

Golf Course ◽

Nutrient Losses

Download Full-text

Managing Landscape Irrigation to Avoid Soil and Nutrient Losses

EDIS ◽

10.32473/edis-ss586-2013 ◽

2013 ◽

Vol 2013 (11) ◽

Author(s):

George Hochmuth ◽

Laurie Trenholm ◽

Don Rainey ◽

Esen Momol ◽

Claire Lewis ◽

...

Keyword(s):

Natural Environment ◽

Management Practices ◽

Root Zone ◽

Irrigation Management ◽

Critical Factor ◽

Nutrient Losses ◽

County Agents ◽

The Right ◽

Soil And Water

Proper irrigation management is critical to conserve and protect water resources and to properly manage nutrients in the home landscape. How lawns and landscapes are irrigated directly impacts the natural environment, so landscape maintenance professionals and homeowners must adopt environmentally-friendly approaches to irrigation management. After selecting the right plant for the right place, water is the next critical factor to establish and maintain a healthy lawn and landscape. Fertilization is another important component of lawn and landscape maintenance, and irrigation must be applied correctly, especially following fertilization, to minimize potential nutrient losses. This publication supplements other UF/IFAS Extension publications that also include information on the role of soil and the root zone in irrigation management. This publication is designed to help UF/IFAS Extension county agents prepare materials to directly address nutrient losses from lawns and landscapes caused by inadequate irrigation management practices. This 6-page fact sheet was written by George Hochmuth, Laurie Trenholm, Don Rainey, Esen Momol, Claire Lewis, and Brian Niemann, and published by the UF Department of Soil and Water Science, October 2013. http://edis.ifas.ufl.edu/ss586

Download Full-text

Nutrient Losses and N & P Balances in Small Agricultural Watersheds in Estonia

Hydrology Research ◽

10.2166/nh.2003.0023 ◽

2003 ◽

Vol 34 (5) ◽

pp. 531-542 ◽

Cited By ~ 10

Author(s):

Arvo lital ◽

Enn Loigu ◽

Nils Vagstad

Keyword(s):

Water Quality Monitoring ◽

Agricultural Watersheds ◽

Agricultural Practice ◽

Nutrient Losses ◽

Nutrient Balances ◽

Nitrogen And Phosphorus ◽

Nutrient Runoff ◽

Baltic Countries ◽

Data Loggers ◽

Runoff Regime

The paper deals with nutrient runoff monitoring results and calculated nutrient budgets on catchment level in small agricultural watersheds in Estonia. A special programme for monitoring of nutrient losses was initiated and a network of monitoring stations, equipped with data-loggers and suitable devices for continuous flow measurement and flow-proportional automatic water sampling were established in Estonia in the mid-1990s. The research methodology is harmonized with the Nordic countries as well as with the other Baltic countries. The results indicate that nutrients losses are relatively low (generally below 11 kg N/ha and 0.9 kg P/ha). It can be partly explained by drastic changes in the Estonian agricultural practice in the 1990s but also by differences in runoff regime. Nutrient balances were calculated for two catchments, based on the data collected from the farms, some special studies and water quality monitoring results in two watersheds in 1995 (1999) - 2001. The nutrient balances for the catchments turned positive after being negative both for nitrogen and phosphorus in the mid-1990s.

Download Full-text

Relationships Between Soluble and Sediment Nutrient Losses, Land Use and Types of Soil in Agricultural Watersheds

Water Quality Research Journal ◽

10.2166/wqrj.1977.009 ◽

1977 ◽

Vol 12 (1) ◽

pp. 121-134 ◽

Cited By ~ 1

Author(s):

G.H. Neilsen ◽

A.F. Mackenzie

Keyword(s):

Land Use ◽

Inorganic Nitrogen ◽

High Surface ◽

Sediment Concentration ◽

Chemical Oxidation ◽

Nutrient Loss ◽

Potassium Sulfate ◽

Agricultural Watersheds ◽

Nutrient Losses ◽

Calcium Magnesium

Abstract Seven agricultural watersheds in southwestern Quebec and southeastern Ontario, ranging in area from 2,000 to 20,000 hectares, were monitored systematically during 1973–75 for soluble inorganic nitrogen, total soluble phosphorus, calcium, magnesium, potassium, sulfate-sulfur, chemical oxidation demand, discharge, suspended sediment concentration, sediment Kjeldahl nitrogen, Bray extractable phosphorus, and ammonium acetate extractable calcium, magnesium and potassium. For 1974–75, annual Kg/ha, loss rates were calculated for the soluble and sediment associated nutrients. Losses varied with nutrient and watershed, with volume of runoff being an important control of nutrient loss variation. Significant amounts of SO4−S in precipitation were suggested by an average watershed soluble N:P:S loss ratio of 10:1:92. Sediment nutrient losses were especially important for N and P, comprising over 40% of their total loss. The importance of spring snow-melt runoff was demonstrated by the high proportion of all nutrients lost at this time. Correlations of nutrient loss, land use and soils suggested that certain land uses resulted in increased stream nutrient losses while increased watershed area of soils with a high surface runoff potential was particularly conducive to increased soluble nutrient and sediment losses.

Download Full-text

The influence of lime application to the acid soil on bioavailability of phosphorus in runoff

Water Science & Technology ◽

10.2166/wst.1996.0518 ◽

1996 ◽

Vol 33 (4-5) ◽

pp. 297-301 ◽

Cited By ~ 2

Author(s):

Vít Sova

Keyword(s):

Acid Soil ◽

Simulated Rainfall ◽

Laboratory Conditions ◽

Lime Application ◽

Runoff Sediment

The influence of lime application to the acid soil on the mobility of phosphorus (P) in runoff was investigated by simulated rainfall in laboratory conditions. The neutralization of the acid soil by appropriate amount of lime significantly increased the portion of loosely bound phosphates in runoff sediment This phenomenon influenced bioavailability of P in runoff which increased after the lime application.

Download Full-text