scholarly journals A Review of the Federal Clean Water Act and the Maryland Water Quality Improvement Act: The Rationale For Developing a Water And Nutrient Management Planning Process For Container Nursery And Greenhouse Operations

2001 ◽  
Vol 19 (4) ◽  
pp. 226-229 ◽  
Author(s):  
John D. Lea-Cox ◽  
David S. Ross

Abstract Newly enforced provisions of the Federal Clean Water Act of 1972 and new state laws like the Maryland Water Quality Improvement Act of 1998 are forcing agriculture to develop effective procedures to show that they are not polluting our nation's water resources. Formulating a water and nutrient management process for nursery and greenhouse operations that takes both water and nutrient applications into account is very important. Many operations already have implemented improved management practices to conserve water and nutrients. For those operations that do not have these procedures in place, it will be necessary to find cost-effective ways to ensure that these operations can comply with laws, and document that they can effectively reduce the risk of nutrient movement from their operations to a minimum.

2021 ◽  
Author(s):  
Wenlong Liu ◽  
Yongping Yuan ◽  
Lydia Koropeckyj-Cox

This file includes information (references, study location, raw data extracted from original study) used to produce the journal article.


2012 ◽  
Vol 2012 (13) ◽  
pp. 3337-3342
Author(s):  
L. Benedetti ◽  
J. Langeveld ◽  
J.J.M. de Klein ◽  
I. Nopens ◽  
A. van Nieuwenhuijzen ◽  
...  

Water ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 584
Author(s):  
Zelalem Abera Angello ◽  
Beshah M. Behailu ◽  
Jens Tränckner

The collective impacts of rapid urbanization, poor pollution management practices and insufficient sanitation infrastructure have driven the water quality deterioration in Little Akaki River (LAR), Ethiopia. Water quality modeling using QUAL2Kw was conducted in the LAR aimed at selecting the optimal water quality improvement and pollution load reduction approaches based on the evaluation of five scenarios: modification of point sources (PS) load (S1), modification of nonpoint sources (NPS) load (S2), simultaneous modification of PS and NPS load (S3), application of local oxygenators and fish passages using cascaded rock ramps (S4), and an integrated scenario (S5). Despite the evaluation of S1 resulting in an average load reduction of Biochemical Oxygen Demand (BOD) (17.72%), PO4-P (37.47%), NO3-N (19.63%), the water quality objective (WQO) in LAR could not be attained. Similarly, though significant improvement of pollution load was found by S2 and S3 evaluation, it did not secure the permissible BOD and PO4-P pollution load in the LAR. Besides, as part of an instream measure, a scenario evaluated using the application of rock ramps (S4) resulted in significant reduction of BOD load. All the individual scenarios were not successful and hence an integration of scenarios (S5) was evaluated in LAR that gave a relatively higher pollutant load reduction rate and ultimately was found a better approach to improve pollution loads in the river. In conclusion, pollution load management and control strategy integrally incorporating the use of source-based wastewater treatment, control of diffuse pollution sources through the application of best management practices and the application of instream measures such as the use of cascaded rock ramps could be a feasible approach for better river water quality management, pollution reduction, aquatic life protection and secure sustainable development in the LAR catchment.


2021 ◽  
Author(s):  
Wenlong Liu ◽  
Yongping Yuan ◽  
Lydia Koropeckyj-Cox

This file includes information (references, study location, raw data extracted from original study) used to produce the journal article.


2002 ◽  
Vol 12 (4) ◽  
pp. 736-740
Author(s):  
John D. Lea-Cox ◽  
Ellen N. Varley ◽  
David S. Ross ◽  
K. Marc Teffeau

The State of Maryland Legislature enacted the Water Quality Improvement Act in 1998, which requires all agricultural operations to develop and implement nitrogen- and phosphorus-based nutrient management plans by December 2002. This legislation also mandates the education and training of professionals who will write nutrient management plans, and growers who will implement them. Maryland Cooperative Extension faculty have therefore been charged with developing effective educational programs that will enable nursery and greenhouse industry professionals to achieve these goals and ensure industry compliance with this legislation.


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