Assessment of Nitrogen and Phosphorus Pathways at the Profile of Over-fertilised Alluvial Soils. Implications for Best Management Practices

Nutrient loss from commercial vegetable fields has become a significant environmental issue in all the major vegetable-producing regions of the United States. Growers are facing potentially disruptive regulations aimed at improving the quality of both surface and ground water. Significant improvement in nutrient management will be required to meet this regulatory challenge. This paper discusses five practical, low-cost nutrient best management practices (BMPs). These BMPs are widely applicable, relatively inexpensive to implement, and can dramatically reduce nitrogen and phosphorus loss from vegetable fields. However, even with careful application of these BMPs, runoff and leachate from vegetable fields may periodically exceed environmental water quality standards, which are very stringent.

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Availability of nitrogen and phosphorus under recycled water irrigation

Soil Research ◽

10.1071/sr99040 ◽

2000 ◽

Vol 38 (3) ◽

pp. 653 ◽

Cited By ~ 8

Author(s):

K. Sakadevan ◽

B. L. Maheshwari ◽

H. J. Bavor

Keyword(s):

Fresh Water ◽

Best Management Practices ◽

Management Practices ◽

Soil Depth ◽

Land Application ◽

P Availability ◽

Recycled Water ◽

Nitrogen And Phosphorus ◽

Best Management ◽

Water Treatments

Land application of recycled water is currently practised in many countries as an alternative to discharge directly into inland and coastal waters. In this field study, nitrogen (N) and phosphorus (P) availability in pasture plots that received recycled water was compared with that of plots which received single applications of superphosphate fertiliser (SSP). The treatments included recycled water applied continuously, recycled water applied alternately with fresh water, single application of SSP at the beginning of the experiment, and a non-amended control. Results from the study showed that the amount of N and P removed by pasture was significantly (P < 0.01) greater in plots that received both recycled water treatments than in the SSP-treated plot and the control. The amount of N (as nitrate and ammonium) leached below 1.0 m soil depth was significantly greater (P < 0.01) for the continuous recycled water treatment than the other treatments or the control. Nitrate was the dominant (>80%) form of N leached from all 4 treatments. In contrast to the findings for N, a greater proportion of applied P (47.9%) was leached below 1.0 m soil depth from the SSP-treated plots than from plots that received recycled water continuously (26.0%), alternately with fresh water (13.3%), and the control. Results from the study may be useful for developing best management practices for recycled water irrigation of pasture.

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Importance of diffuse pollution control in the Patzcuaro Lake Basin in Mexico

Water Science & Technology ◽

10.2166/wst.2008.820 ◽

2008 ◽

Vol 58 (11) ◽

pp. 2179-2186 ◽

Cited By ~ 5

Author(s):

Marco Mijangos Carro ◽

Jorge Izurieta Dávila ◽

Antonieta Gómez Balandra ◽

Rubén Hernández López ◽

Rubén Huerto Delgadillo ◽

...

Keyword(s):

Best Management Practices ◽

Catchment Area ◽

Management Practices ◽

Point Sources ◽

Diffuse Pollution ◽

Lake Basin ◽

Nitrogen And Phosphorus ◽

Best Management ◽

Critical Areas ◽

Animal Farm

In the catchment area of the Lake Patzcuaro in Central Mexico (933 km2) the apportionments of erosion, sediment, nutrients and pathogen coming from thirteen micro basins were estimated with the purpose of identifying critical areas in which best management practices need to be implemented in order to reduce their contribution to the lake pollution and eutrophication. The ArcView Generalized Watershed Loading Functions model (AV-GWLF) was applied to estimate the loads and sources of nutrients. The main results show that the total annual contribution of nitrogen from point sources were 491 tons and from diffuse pollution 2,065 tons, whereas phosphorus loads where 116 and 236 tons, respectively during a thirty year simulation period. Micro basins with predominant agricultural and animal farm land use (56% of the total area) accounts for a high percentage of nitrogen load 33% and phosphorus 52%. On the other hand, Patzcuaro and Quiroga micro basins which comprise approximately 10% of the total catchment area and are the most populated and visited towns by tourist 686,000 people every year, both contributes with 10.1% of the total nitrogen load and 3.2% of phosphorus. In terms of point sources of nitrogen and phosphorus the last towns contribute with 23.5% and 26.6% respectively. Under this situation the adoption of best management practices are an imperative task since the sedimentation and pollution in the lake has increased dramatically in the last twenty years.

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Watering Station Best Management Practices for Container Nurseries

EDIS ◽

10.32473/edis-ep590-2020 ◽

2020 ◽

Vol 2020 (5) ◽

Author(s):

Tom Yeager

Keyword(s):

Best Management Practices ◽

Natural Waters ◽

Management Practices ◽

Nitrogen And Phosphorus ◽

Fact Sheet ◽

Best Management ◽

Container Nurseries

Watering stations are specialized irrigation structures where plants are watered immediately after transplanting. Water not retained by the container substrate as well as water falling between containers becomes runoff. This runoff can contain sediment and nutrients, such as nitrogen and phosphorus, that can impact natural waters if not managed according to Best Management Practices (BMPs). The purpose of this new 3-page fact sheet is to provide examples of how runoff from watering stations at two nurseries was managed after implementation of the BMP. Written by Tom Yeager and published by the UF/IFAS Environmental Horticulture Department.https://edis.ifas.ufl.edu/ep590

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Cranberry Best Management Practice Adoption and Conservation Farm Planning in Massachusetts

HortTechnology ◽

10.21273/horttech.16.3.0393 ◽

2006 ◽

Vol 16 (3) ◽

pp. 393-397 ◽

Cited By ~ 9

Author(s):

Carolyn J. DeMoranville

Keyword(s):

Best Management Practices ◽

Management Practices ◽

Nutrient Management ◽

Management Practice ◽

Agricultural Practices ◽

Nitrogen And Phosphorus ◽

Current Conservation ◽

Natural Resource Conservation ◽

Best Management ◽

Natural Resource Conservation Service

In Massachusetts, cranberry (Vaccinium macrocarpon) bogs were historically developed in existing wetlands and new plantings are now established in mineral soils that are converted into constructed wetlands. To streamline the interaction between cranberry farming and wetlands protection, the state has defined “normal agricultural practices” that are exempt from wetlands regulations under certain circumstances. As part of that process and to qualify for the exemption, farmers are required to have a conservation farm plan and demonstrate the use of best management practices (BMPs) on their farms. The University of Massachusetts Amherst Cranberry Experiment Station (UMass Cranberry Station) was engaged to bring together the U.S. Department of Agriculture, Natural Resource Conservation Service (NRCS) and cranberry industry representatives to define BMPs specific to cranberry farming practices. Initially, the documents were reviewed by scientists and regulators for soundness of science and rigor of environmental protection. A grower committee reviewed the proposed BMPs to determine if the BMPs could be implemented on real farms. The next stage of the project consisted of defining areas where more research was needed to formulate good BMPs. In particular, research projects were initiated to study nitrogen and phosphorus nutrition. This research has become the basis for nutrition BMPs, national cranberry nutrition guidelines, and standards used by NRCS for cranberry nutrient management plans. The cranberry BMP project has continued with a regular cycle of revision and additions based on grower-identified needs for horticultural and environmental guidance. This connection to the growers, along with the regulatory link, accounts for the widespread adoption of BMPs in the cranberry industry. Local NRCS estimates that 75% to 80% of Massachusetts cranberry growers have current conservation farm plans that include BMP implementation.

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