Sarasota Bay: Protection of a Natural Resource

1993 ◽  
Vol 28 (3-5) ◽  
pp. 91-99
Author(s):  
R. A. Wagner ◽  
M. G. Heyl
Keyword(s):  
Wastewater Treatment ◽  
Best Management Practices ◽  
Management Practices ◽  
Treatment Plan ◽  
Management Strategies ◽  
Treatment Plant ◽  
Modeling Tools ◽  
Best Management ◽  
Sarasota Bay ◽  
Potential Benefits

As part of the Sarasota Bay National Estuary Program (NEP) evaluation of environmental problems, modeling tools were used to estimate pollution loadings from diverse sources, including surface runoff, baseflow, wastewater treatment plant discbarges, septic tanks, and direct deposition of rainfall on the bay surface. After assessing the relative impacts of the pollution sources, alternative management strategies were identified and analyzed. These strategies focused primarily on future development, and included structural and nonstructural best management practices (BMPs), as well as a regional wastewater treatment plan. Loading reductions, along with planning-level cost data and estimates of feasibility and other potential benefits, were used to identify the most promising alternatives.

Generalized Management Strategies to Delay Herbicide Resistance: A Simulation Approach

Weed Science ◽  
2018 ◽  
Vol 66 (4) ◽  
pp. 530-539 ◽  
Author(s):  
Argen M. West ◽  
Anthony L. Altieri ◽  
Steven A. Cryer
Keyword(s):  
Herbicide Resistance ◽  
Best Management Practices ◽  
Management Practices ◽  
Management Strategies ◽  
Parametric Uncertainty ◽  
Weed Species ◽  
Modeling Tools ◽  
Weed Population ◽  
Best Management ◽  
Herbicide Management

AbstractWeed species develop resistance to herbicides through the repeated use of the same herbicide mechanism of action (MOA). Farmers often resort to different MOAs once a weed population has become resistant to the MOA that resulted in a resistant weed population. Delaying herbicide resistance is of great importance to growers due to the limited number of commercially available MOAs. Resistance may occur through monogenic or polygenic traits, and various academic and industrial modeling tools have been developed to help infer cause–effect from multiple interacting factors that may not be intuitive. This work explores various best management practices in delaying weed resistance, and we give details for monogenic and quantitative polygenic resistance models and investigate combinations of management strategies that lead to maximizing the product life span for a herbicide. Management practices under parametric uncertainty are provided to showcase how various practices can be used to extend lifetime product performance before resistance is manifest. Penalty functions associated with choosing a unique management strategy, based upon grower constraints, are the subject of a companion manuscript.

scholarly journals Validation of Nursery and Greenhouse Best Management Practices through Scientific Evidence

2019 ◽  
Vol 29 (6) ◽  
pp. 700-715
Author(s):  
Rachel Mack ◽  
James S. Owen ◽  
Alex X. Niemiera ◽  
David J. Sample
Keyword(s):  
Water Use ◽  
Best Management Practices ◽  
Management Practices ◽  
Scientific Evidence ◽  
Irrigation Management ◽  
Management Strategies ◽  
Nutrient Loss ◽  
Water Losses ◽  
Best Management ◽  
Greenhouse Growers

Nursery and greenhouse growers use a variety of practices known as best management practices (BMPs) to reduce sediment, nutrient, and water losses from production beds and to improve efficiency. Although these BMPs are almost universally recommended in guidance manuals, or required by regulation in limited instances, little information is available that links specific BMPs to the scientific literature that supports their use and quantifies their effectiveness. A previous survey identified the most widely used water management, runoff, and fertilizer-related BMPs by Virginia nursery and greenhouse operators. Applicable literature was reviewed herein and assessed for factors that influence the efficacy of selected BMPs and metrics of BMP effectiveness, such as reduced water use and fertilizers to reduce sediment, nitrogen (N), and phosphorus (P) loads in runoff. BMPs investigated included vegetative zones (VZs), irrigation management strategies, and controlled-release fertilizers (CRFs). Use of vegetative buffers decreased average runoff N 41%, P 67%, and total suspended solids 91%. Nitrogen, P, and sediment removal efficacy increased with vegetative buffer width. Changes in production practices increased water application efficiency >20% and decreased leachate or runoff volume >40%, reducing average N and P loss by 28% and 14%, respectively. By linking BMPs to scientific articles and reports, individual BMPs can be validated and are thus legitimized from the perspective of growers and environmental regulators. With current and impending water use and runoff regulations, validating the use and performance of these BMPs could lead to increased adoption, helping growers to receive credit for actions that have been or will be taken, thus minimizing water use, nutrient loss, and potential pollution from nursery and greenhouse production sites.

scholarly journals Nitrogen Fertilization Guidelines for Bare-Ground and Plastic Mulch Cabbage Production in Florida

EDIS ◽  
2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Lincoln Zotarelli ◽  
Charles Barrett ◽  
Andre Luiz B. R. Da Silva ◽  
Christian Christensen ◽  
Gary England
Keyword(s):  
Nitrogen Fertilizer ◽  
Best Management Practices ◽  
Nitrogen Fertilization ◽  
Management Practices ◽  
Management Strategies ◽  
Nitrogen Losses ◽  
Bare Ground ◽  
Plastic Mulch ◽  
Fresh Market ◽  
Best Management

This new 9-page publication of the UF/IFAS Horticultural Sciences Department focuses on the nitrogen fertilizer best management practices (BMP) for green fresh-market and processing cabbage head production in Florida. This publication aims to provide management strategies that comply with statewide BMP guidelines to optimize economic yield while minimizing nitrogen losses to the environment. Written by L. Zotarelli, C. E. Barrett, A. L. B. R. da Silva, C. T. Christensen, and G. K. England.https://edis.ifas.ufl.edu/hs1428

Mining pesticide use data to identify best management practices

2007 ◽  
Vol 22 (4) ◽  
pp. 260-270 ◽  
Author(s):  
Emily Oakley ◽  
Minghua Zhang ◽  
Paul Richard Miller
Keyword(s):  
State Government ◽  
Best Management Practices ◽  
Management Practices ◽  
Management Strategies ◽  
Pesticide Use ◽  
Yield Data ◽  
Ongoing Research ◽  
Practical Applications ◽  
Best Management ◽  
Reduced Risk

AbstractThis paper reports on the initial findings of an ongoing research project to capture differences in pest management strategies and decision-making among growers using the California Pesticide Use Reports (PUR) database. Analysis was performed for prunes in Sutter and Yuba counties to identify on-farm innovation by analyzing the PUR for best management practices to reduce pesticide use. Results showed that large variations in pesticide use were present in 2000, with a range of less than 5 kg to more than 41 kg of pesticide applied per hectare (ha) crop planted in Sutter County and a range of less than 2 kg to close to 30 kg per ha crop planted in Yuba County. Among the 42 growers selected cultivating more than 80 ha, five growers in Sutter County and three growers in Yuba County in 2000 were identified as low pesticide use growers. The results indicated a surprising number of low to no fungicide users and an even higher number of growers using no herbicides in both counties. Twenty-nine viable low pesticide use growers were identified overall among the total 294 growers in the Sutter and Yuba counties. However, there were no spatial patterns of where these low pesticide use growers' fields were located. The transition from higher-risk active ingredients (AIs) to reduced-risk AIs used by many of the low pesticide users suggests intentional substitution. Initial yield data indicate that quantity and quality were not adversely affected by low use growers employing reduced-risk pesticides, fewer (AIs) per field, and lower rates per chemical than their moderate to high use counterparts. Diverse collaborators consisting of university researchers, environmental and community organizations, state government scientists, and growers worked together throughout the entire project, beginning with defining the research parameters, then interpreting the results, and finally suggesting practical applications for the outcomes. The paper also highlights the effectiveness of using such collaborative research relationships to explore low pesticide use alternatives, to directly exchange research findings with growers, and to encourage a farmer-to-farmer extension model.

scholarly journals Describing condition-specific determinants of competition in boreal and sub-boreal mixedwood stands

2004 ◽  
Vol 80 (6) ◽  
pp. 736-742 ◽  
Author(s):  
D. Scott Green
Keyword(s):  
Best Management Practices ◽  
Management Practices ◽  
Management Strategies ◽  
Local Environment ◽  
Density Dependent ◽  
Best Management ◽  
Primary Growth ◽  
Context Specific ◽  
Species Specific ◽  
Mixedwood Stands

There is a growing economic and ecological incentive in developing best-management practices for broadleaf-conifer mixedwood stands in boreal and sub-boreal regions of Western Canada. Current free-growing guidelines employed in these areas appear to be poor predictors of interactions between primary growth determinants and environmental conditions in these complex stands. Density dependent relations between broadleaf and conifer components in mixedwood stands may vary across a range of conditions due to interactions discussed in this paper between primary growth determinants (i.e., light limitations, edaphic limitations and species specific traits) and local environment. Clarifying these interactions will promote the development of adaptable tools that can be used to develop context-specific mixedwood management strategies. Key words: mixedwood management, free-growing guidelines, boreal, sub-boreal, density-dependent competition

scholarly journals Nitrogen Fertilization Guidelines for Potato Production in Florida

EDIS ◽  
2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Lincoln Zotarelli ◽  
Tara Wade ◽  
Gary England ◽  
Christian Christensen
Keyword(s):  
Best Management Practices ◽  
Nitrogen Fertilization ◽  
Management Practices ◽  
Potato Crop ◽  
Management Strategies ◽  
Potato Production ◽  
N Fertilizer ◽  
N Losses ◽  
Economic Return ◽  
Best Management

This new 11-page publication focuses on the nitrogen (N) fertilizer best management practices (BMP) for potato crop in Florida. The aim is to provide management strategies that comply with statewide BMP guidelines to maximize yield and economic return while minimizing N losses to the environment. Written by Lincoln Zotarelli, Tara Wade, Gary K. England, and Christian T. Christensen and published by the UF/IFAS Horticultural Sciences Department.https://edis.ifas.ufl.edu/hs1429

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