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Articles 1 - 30 of 204
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Tb208: Biological Water Quality Standards To Achieve Biological Condition Goals In Maine Rivers And Streams: Science And Policy, Susan P. Davies, Francis Drummond, David L. Courtemanch, Leonidas Tsomides, Thomas J. Danielson
Tb208: Biological Water Quality Standards To Achieve Biological Condition Goals In Maine Rivers And Streams: Science And Policy, Susan P. Davies, Francis Drummond, David L. Courtemanch, Leonidas Tsomides, Thomas J. Danielson
Technical Bulletins
This publication describes the philosophy, history, methodology, and management applications of numeric biological criteria in water quality standards in Maine. The presentation describes the decision-making process used by the Maine Department of Environmental Protection (MDEP) for assessing attainment of aquatic life uses in water quality standards using benthic macroinvertebrates in Maine streams and rivers including eight case studies of management applications and the improved environmental outcomes that have resulted. The MDEP, University of Maine, and business and nonprofit stakeholders participated in the development and testing of Maine’s numeric biological criteria. This publication further discusses the broader relevance of numeric biological …
Tb207: A Manual For Remote Sensing Of Maine Lake Clarity, Ian M. Mccullough, Cynthia S. Loftin, Steven A. Sader
Tb207: A Manual For Remote Sensing Of Maine Lake Clarity, Ian M. Mccullough, Cynthia S. Loftin, Steven A. Sader
Technical Bulletins
The purpose of this manual is to support use of satellite-based remote sensing for statewide lake water-quality monitoring in Maine. The authors describe step-by-step methods that combine Landsat and MODIS satellite data with field-collected Secchi disk data for statewide assessment of lake water clarity. Landsat can be simultaneously used to assess more than Maine 1,000 lakes ≥ 8 ha, whereas MODIS can be used to assess a maximum of 364 lakes ≥ 100 ha (250-m image resolution) or 83 lakes ≥ 400 ha (500-m image resolution). Although the methods were specifically developed for Maine, other states or non-Maine agencies may …
Tb206: Biodiversity Of The Schoodic Peninsula: Results Of The Insect And Arachnid Bioblitzes At The Schoodic District Of Acadia National Park, Maine, Donald S. Chandler, David Manski, Charlene Donahue, Andrei Alyokhin
Tb206: Biodiversity Of The Schoodic Peninsula: Results Of The Insect And Arachnid Bioblitzes At The Schoodic District Of Acadia National Park, Maine, Donald S. Chandler, David Manski, Charlene Donahue, Andrei Alyokhin
Technical Bulletins
Bioblitzes have become a popular approach to involve scientists and the public in studying biodiversity. They reinforce the idea that natural areas are resources of scientific and educational value and are a way of engaging the public in experiencing the natural world. A bioblitz is typically conducted over a 24-hour period in a targeted area, with the goal of documenting the presence of as many species as possible. Scientists and “weekend naturalists,” along with other individuals who enjoy being in the field, are asked to attend bioblitzes as volunteers to help in finding and identifying as many species as possible. …
Tb205: Cost Of Supplemental Irrigation For Potato Production In Maine, David Silver, Ermias Afeworki, George K. Criner
Tb205: Cost Of Supplemental Irrigation For Potato Production In Maine, David Silver, Ermias Afeworki, George K. Criner
Technical Bulletins
This report presents estimated irrigation costs for potato production in Maine. The variability of the weather in Maine (particularly precipitation) has a large influence on crop yields and overall farm profitability. The use of supplemental irrigation on high-value agricultural crops can improve the economic situation of farmers who use this equipment efficiently. Costs considered in this report include capital costs (equipment, interest, water development (pond construction, permitting, engineering), and operating and maintenance costs (labor, power, repair).
Tb204: Organic Milk Production In Maine: Attributes, Costs, And Returns, Amelia L. Cook, Patrick S. Heacock, George K. Criner, Lisa A. Bragg
Tb204: Organic Milk Production In Maine: Attributes, Costs, And Returns, Amelia L. Cook, Patrick S. Heacock, George K. Criner, Lisa A. Bragg
Technical Bulletins
This report summarizes attributes, costs, and returns for organic dairy farms in Maine that responded to the 2008 dairy cost of production survey. This survey and analysis was conducted by the University of Maine in cooperation with the Maine Milk Commission. This publication reports on data collected over the 2007 production year. Analysis and discussion of the data revolve around four categories. The first category averages all 30 organic farms to create a statewide group. The authors then broke these 30 farms into three size groups (small, medium, and large) based on the number of cows on each farm. There …
Tb203: Recent Advances In The Biology And Genetics Of Lowbush Blueberry, Daniel J. Bell, Lisa J. Rowland, John Smagula, Frank Drummond
Tb203: Recent Advances In The Biology And Genetics Of Lowbush Blueberry, Daniel J. Bell, Lisa J. Rowland, John Smagula, Frank Drummond
Technical Bulletins
For lowbush blueberries, this publication presents an in-depth look at the biology and genetics of lowbush blueberry. The authors provide details on its genetic composition and the outline the usefulness of various biochemical, genomic, and other markers in studying the plants genetic structure. The authors also provide an overview of the plant’s economic value to Maine, nutritional value, and its life history.
Tb202: Composition And Biomass Of Forest Floor Vegetation In Experimentally Acidified Paired Watersheds At The Bear Brook Watershed In Maine, Peter Kenlan, G. B. Wiersma, A. S. White, I. J. Fernandez
Tb202: Composition And Biomass Of Forest Floor Vegetation In Experimentally Acidified Paired Watersheds At The Bear Brook Watershed In Maine, Peter Kenlan, G. B. Wiersma, A. S. White, I. J. Fernandez
Technical Bulletins
The percentage cover (abundance), frequency of occurrence, biomass, species richness, and species diversity of understory herbs was measured on a paired watershed ecosystem in eastern Maine, USA. This paired watershed site (Bear Brook Watershed in Maine, BBWM) has had the West Bear Brook Watershed treated bi-monthly with granular ammonium sulfate at a rate of 28.8 kg S ha-1 yr-1 and 25.2 kg N ha-1 yr-1 since 1989. East Bear Brook Watershed serves as the reference site. More than 100 plots were randomly located across the two watersheds. The data suggest that there is generally a lower frequency of occurrence of …
Tb201: Comparison Of The Efficacy Of Sodium Acid Sulfate And Citric Acid Treatments In Reducing Acrylamide Formation In French Fries, Byungchul Kim, L. Brian Perkins, Beth Calder, Lawrence A. Leblanc
Tb201: Comparison Of The Efficacy Of Sodium Acid Sulfate And Citric Acid Treatments In Reducing Acrylamide Formation In French Fries, Byungchul Kim, L. Brian Perkins, Beth Calder, Lawrence A. Leblanc
Technical Bulletins
Two acidulant food additives, sodium acid sulfate (SAS) and citric acid, were investigated for their effectiveness in reducing acrylamide formation in french fries. Acrylamide concentration was determined by gas chromatography-mass spectrometry (GC-MS) after cleanup of french fry extracts by passage through a C-18 column and derivitization by bromination. At a frying temperature of 180°C, both acidulants appeared ineffective, possibly due to the rapid rate of acrylamide formation, which surpassed the capacity of the acidulants to protonate acrylamide intermediates. At the lowest frying temperature tested (160°C), 3% SAS and 3% citric acid significantly (P < 0.05) inhibited acrylamide formation as compared to the control. However, 3% SAS appeared to inhibit acrylamide formation more effectively than citric acid at 160°C, as well as at frying temperatures of 170 and 180°C. Our results indicate that acrylamide formation during frying can be reduced by treatment of potatoes with 3% SAS or citric acid, but SAS, a stronger acid with a lower pKa, is the more effective acidulant.
Tb200: Carbon And Nutrients In Maine Forest Soils, Ivan J. Fernandez
Tb200: Carbon And Nutrients In Maine Forest Soils, Ivan J. Fernandez
Technical Bulletins
Recent public concerns surrounding climate change and greenhouse gas emissions have resulted in a lively debate about approaches to fossil fuel offsets and carbon (C) sequestration in forests. The forest community sees opportunities for the intensification of the use of forests for markets ranging from forest products, such as fuel or fuel feedstock, to a range of new bioproducts. This report provides initial insights from an ongoing effort to synthesize forest soils data for Maine. The specific objectives presented here were (1) to develop descriptive statistics for C and measures of available forms of the essential nutrients N, P, and …
Tb198: Economic Analysis Of Organic Pest Management Strategies For Lowbush Blueberries Using Enterprise Budgeting, Andrew C. Files, David Yarborough, Frank Drummond
Tb198: Economic Analysis Of Organic Pest Management Strategies For Lowbush Blueberries Using Enterprise Budgeting, Andrew C. Files, David Yarborough, Frank Drummond
Technical Bulletins
Enterprise budgets were developed for the 12 different pest management treatments of a large-plot organic blueberry transitions project in Maine, covering two prune/harvest cycles (2004–2005 and 2006–2007). Regression analysis of the plot-level yield results for the aggregate of the two prune/harvest cycles indicated that burning fields as compared to mowing fields significantly increased blueberry yields over the aggregate of two prune/harvest cycles. Similarly, adding 1,000 lbs of sulfur before the first prune/harvest cycle significantly increased blueberry yields over the aggregate of two prune/harvest cycles as compared to no addition of sulfur. The addition of fertilizer had no significant impact on …
Tb199: Ant–Homopteran Relationships: Relevance To An Ant Invasion In Maine, Katherine E. Mcphee, Eleanor Groden, Francis A. Drummond
Tb199: Ant–Homopteran Relationships: Relevance To An Ant Invasion In Maine, Katherine E. Mcphee, Eleanor Groden, Francis A. Drummond
Technical Bulletins
The richness and diversity of native ant species on Mt. Desert Island, Maine, have been reduced in areas infested with Myrica rubra (European red ant). In general, the success of invasive ant species has been attributed to interference and exploitative competition coupled with the ants’ opportunistic diets. In field experiments on Mount Desert Island, Maine, M. rubra discovered and recruited to baits faster than native ants. This study also showed that M. rubra displaced most native ant species from food resources (Garnas 2005). This, together with M. rubra’s aggressive defense of invaded territories, has led to fewer native ants in …
Tb197: Forest Biomass Estimates In Maine:Statewide, County, And Spatial, Kenneth M. Laustsen
Tb197: Forest Biomass Estimates In Maine:Statewide, County, And Spatial, Kenneth M. Laustsen
Technical Bulletins
In Maine, statewide biomass estimates have increased from 752 million dry tons in 1982 to 980 million dry tons in a 2003 estimate. These estimates are produced using Forest Inventory & Analysis (FIA) data collected during Maine’s periodic and now annualized inventory design. The Maine Forest Service began tracking and reporting on wood flows of biomass in 1986. For the last 20 years (1986–2005) the total annual harvesting of all products has ranged between 6 and 7 million cords, extracted from a standing inventory that is currently estimated to be 277 million cords. The objectives of this current study were …
Tb196: Temperature, Soil Moisture, And Streamflow At The Bear Brook Watershed In Maine (Bbwm), Ivan J. Fernandez, Joseph E. Karem, Stephen A. Norton, Lindsey E. Rustad
Tb196: Temperature, Soil Moisture, And Streamflow At The Bear Brook Watershed In Maine (Bbwm), Ivan J. Fernandez, Joseph E. Karem, Stephen A. Norton, Lindsey E. Rustad
Technical Bulletins
The Bear Brook Watershed in Maine is a whole-ecosystem chemical manipulation initiated in 1987 to study the effects of acid deposition on forests and surface waters. The focus of this research was to understand the biogeochemical response of watersheds with emphasis on chemistry and hydrology. In 2001 a program was initiated to provide more detailed measurements of temperature and moisture to examine critical linkages amongst chemical, biological, and physical processes that ultimately work together to define ecosystem function. The purpose of this publication is to provide data from the initial phase of soil temperature, air temperature, and soil moisture measurements …
Tb195: Element Concentrations In Maine Forest Vegetation And Soils, Chandra J. Mcgee, Ivan J. Fernandez, Stephen A. Norton, Constance S. Stubbs
Tb195: Element Concentrations In Maine Forest Vegetation And Soils, Chandra J. Mcgee, Ivan J. Fernandez, Stephen A. Norton, Constance S. Stubbs
Technical Bulletins
Bioaccumulation of trace metals in plant tissues can present a health risk to wildlife, and potentially to humans. The Passamaquoddy Tribe in Maine was concerned about health risks of cadmium (Cd) because of a health advisory for moose liver and kidney consumption due to high Cd levels. In addition to Cd, this study evaluated concentrations of aluminum (Al), calcium (Ca), copper (Cu), iron (Fe), potassium (K), magnesium (Mg), manganese (Mn), nickel (Ni), phosphorus (P), lead (Pb), and zinc (Zn) in four common terrestrial moose-browse species, associated forest soils, and two species of aquatic vegetation on Passamaquoddy tribal land in eastern …
Tb194: Hemisgrapsus Sanguineus (Asian Shore Crab) As Predator Of Juvenile Homarus Americanus (American Lobster), Anna Demeo, John G. Riley
Tb194: Hemisgrapsus Sanguineus (Asian Shore Crab) As Predator Of Juvenile Homarus Americanus (American Lobster), Anna Demeo, John G. Riley
Technical Bulletins
Hemigrapsus sanguineus, commonly known as the Asian shore crab, was first discovered on the east coast of the United States in New Jersey in 1988. The spread of this invasive crab has been rapid, and it is now abundant along a large portion of the mid-Atlantic and southern New England coast. Further, an invasion of H. sanguineus into New Hampshire and southern Maine is in its preliminary stages. The introduction of this crab to North America could potentially affect a variety of native species. Numerous studies have examined the predation of H. sanguineus on blue mussels, snails, and other bivalves. …
Tb193: The Cost Of Producing Milk In Maine: Results From The 2005 Dairy Cost Of Production Survey, Lisa A. Bragg, Timothy J. Dalton
Tb193: The Cost Of Producing Milk In Maine: Results From The 2005 Dairy Cost Of Production Survey, Lisa A. Bragg, Timothy J. Dalton
Technical Bulletins
This report summarizes the results of the 2005 Dairy Cost of Production survey implemented by The University of Maine and the Maine Milk Commission. This study summarizes data collected over the 2004 production year. Funding for this report was provided by the Maine Milk Commission. Analysis and discussion of the data in this report centers on an industry-wide group and three smaller sets called clusters. Cluster analysis attempts to identify groups of farms from within the sample of survey respondents that have relatively homogenous characteristics.
Tb192: The Use Of Glyphosate Herbicides In Managed Forest Ecosystems And Their Effects On Non-Target Organisms With Particular Reference To Ants As Bioindicators, Kerry F.L. Guiseppe, Francis A. Drummond, Constance Stubbs, Stephen Woods
Tb192: The Use Of Glyphosate Herbicides In Managed Forest Ecosystems And Their Effects On Non-Target Organisms With Particular Reference To Ants As Bioindicators, Kerry F.L. Guiseppe, Francis A. Drummond, Constance Stubbs, Stephen Woods
Technical Bulletins
This publication reviews and synthesizes the results of many research studies designed to elucidate the ecological effects of the herbicide glyphosate used in forested landscapes. We have not intended our review to be an exhaustive review of all published studies (both laboratory and field investigations) concerned with faunal and floral glyphosate interactions and the environmental fate of glyphosate. We particularly focused on studies that had relevance to north temperate forest ecosystems and selected published investigations to incorporate into our review that cover a wide range of faunal and floral taxa that might be exposed to herbicides during applications.
Tb191: Conservation And Management Of Native Bees In Cranberry, Jennifer L. Loose, Francis A. Drummond, Constance Stubbs, Stephen Woods
Tb191: Conservation And Management Of Native Bees In Cranberry, Jennifer L. Loose, Francis A. Drummond, Constance Stubbs, Stephen Woods
Technical Bulletins
Threats to agriculturally important pollinators have serious implications for human beings. A loss of bees translates to less successful crop pollination, thus reduced yield and poorer quality fruits. Native bees have the potential to serve as commercial pollinators. A diverse pollinator complex comprised of both honey bees and native bees should result in stable pollination levels and should be resistant to threats such as disease, fluctuating honey and crop prices, and honey bee transportation costs. Adding the goal of native bee conservation to land management increases the ecological integrity of an ecosystem by conserving a unique biological interaction that is …
Tb190: Spider Predation In Agroecosystems: Can Spiders Effectively Control Pest Populations., Darlene Maloney, Francis A. Drummond, Randy Alford
Tb190: Spider Predation In Agroecosystems: Can Spiders Effectively Control Pest Populations., Darlene Maloney, Francis A. Drummond, Randy Alford
Technical Bulletins
Recent trends in agriculture towards reduced pesticide use and ecological sustainability have lead to increased interest in spiders as potential biological control agents. Although the Chinese have augmented spider populations in field crops as a pest management strategy for centuries, much debate remains as to whether spiders will effectively control pest populations in U.S. agricultural ecosystems. This technical bulletin reviews the literature to describe the reduction of insect pest densities by spiders and the effects of pesticides on spiders. In addition to addressing the question of whether spiders can be effective biocontrol agents, the authors outline techniques to conserve and …
Tb187: Forest Vegetation Monitoring In Acadia National Park, J. D. Eckhoff, G. B. Wiersma, J. A. Elvir
Tb187: Forest Vegetation Monitoring In Acadia National Park, J. D. Eckhoff, G. B. Wiersma, J. A. Elvir
Technical Bulletins
The goal of this report is to present the results of the vegetation component of the PRIMENet study at Acadia. The results include a classification of vegetation types and their locations within Cadillac Brook and Hadlock Brook watersheds; a synthesis of the primary and meta tree, sapling, and seedling data from the two study watersheds; and foliar chemical analyses using Acer rubrum and Picea rubens from Cadillac Brook and Hadlock Brook watersheds. This report provides the baseline information for long-term forest vegetation monitoring in the deciduous and coniferous forests in Cadillac Brook and Hadlock Brook watersheds. Ongoing interest and studies …
Tb188: Tow Tank Scale Modeling In The Design Of Tidal Upwellers, John Riley
Tb188: Tow Tank Scale Modeling In The Design Of Tidal Upwellers, John Riley
Technical Bulletins
In February 1999 an ad hoc committee of representatives of Maine’s shellfish aquaculture industry, The University of Maine, and the Maine Sea Grant College Program met to discuss priorities for research to improve the performance of tidally powered shellfish upwellers. Information from this meeting was incorporated into a proposal submitted later in the year to the Maine Aquaculture Innovation Center. The project was funded and work began in January 2000. The project involved engineering analysis, field measurements of shellfish seed properties, and scale-model testing conducted in the university wave/towing tank with the overall goal of optimizing the design of a …
Tb189: The Cost Of Producing Milk In Maine: Results From The 2002 Dairy Cost Of Production Survey, Timothy J. Dalton, Lisa A. Bragg
Tb189: The Cost Of Producing Milk In Maine: Results From The 2002 Dairy Cost Of Production Survey, Timothy J. Dalton, Lisa A. Bragg
Technical Bulletins
This report summarizes the results of the 2002 Dairy Cost of Production survey implemented by The University of Maine and the Maine Milk Commission. Funding for this report was provided by the Maine Milk Commission. Analysis and discussion of the data in this report centers on four major groups called clusters. Cluster analysis attempts to identify groups of farms from within the sample of survey respondents that have relatively homogenous characteristics.
Tb186: Assessing Silviculture Research Priorities For Maine Using Wood Supply Analysis, Robert G. Wagner, Ernest H. Bowling, Robert S. Seymour
Tb186: Assessing Silviculture Research Priorities For Maine Using Wood Supply Analysis, Robert G. Wagner, Ernest H. Bowling, Robert S. Seymour
Technical Bulletins
To identify the highest priorities for silviculture research in Maine, the authors of this report quantified the absolute and relative influence of future silvicultural investments (tree planting, herbicide application, and PCT) and commercial thinning on projected harvest levels and future wood supplies in Maine. They also quantified the absolute and relative importance of the growth and yield assumptions (via sensitivity analysis) used in estimating the influence of these silvicultural treatments on projected harvest levels and future wood supplies in Maine; and based on the absolute and relative importance of the growth and yield assumptions and on the influence of differing …
Tb184: Least-Cost Options For The Collection, Treatment, And Disposal Of Biomedical Waste In Maine., Andrew C. Files, Thomas G. Allen, George K. Criner
Tb184: Least-Cost Options For The Collection, Treatment, And Disposal Of Biomedical Waste In Maine., Andrew C. Files, Thomas G. Allen, George K. Criner
Technical Bulletins
This study examines the cost effectiveness of using current treatment technologies to sanitize, disinfect, shred, and dispose of biomedical waste within the state in relation to the costs of current disposal practices in Maine. The study employs a linear programming model to determine the combination of treatment facilities, transportation options, and disposal sites to treat all waste produced in Maine at the lowest statewide cost. A least-cost solution is developed for three different scenarios. The first two scenarios assume that all treated waste must be shredded in accordance with current regulatory requirements. The third scenario assumes that regulations are changed …
Tb185: Designing A Labeling Policy For Genetically Modified Food: Results Of Focus Group Research, Mario F. Teisl, Lynn Halverson, Kelly O'Brien, Brian Roe
Tb185: Designing A Labeling Policy For Genetically Modified Food: Results Of Focus Group Research, Mario F. Teisl, Lynn Halverson, Kelly O'Brien, Brian Roe
Technical Bulletins
The labeling of genetically modified foods is a topic of growing, and sometimes cantankerous, public debate—a debate whose outcome could dramatically alter the operation of the U.S. production agriculture, processing, distribution and retailing sectors. The debate surrounding the labeling of genetically modified foods is largely about how much information to supply to consumers to facilitate effective choice and how that information should be supplied. Although there seems to be empirical evidence of a mainstream desire for the labeling of genetically modified foods, we know of no study that has provided guidance to policy makers as to the best method of …
Tb183: Investment, Ownership And Operating Costs Of Supplemental Irrigation Systems For Maine Wild Blueberries, Timothy J. Dalton, Andrew Files, David Yarborough
Tb183: Investment, Ownership And Operating Costs Of Supplemental Irrigation Systems For Maine Wild Blueberries, Timothy J. Dalton, Andrew Files, David Yarborough
Technical Bulletins
This study investigates the investment and annual cost of supplemental irrigation equipment used on lowbush blueberries and calculates breakeven yields required to pay for annual costs and the earliest possible payoff period to recover investment costs. Using an economic-engineering approach to simulating investment and operating costs, this project assesses breakeven requirements on irrigation investment. The report reviews several of the technical factors contributing to the irrigation decision, calculate economic costs and are breakeven measures, but only introduce some of the financial factors for a grower to consider.
Tb180: Baseline Data For Long-Term Forest Vegetation Monitoring At Bear Brook Watershed In Maine, J. D. Eckhoff, G. B. Wiersma
Tb180: Baseline Data For Long-Term Forest Vegetation Monitoring At Bear Brook Watershed In Maine, J. D. Eckhoff, G. B. Wiersma
Technical Bulletins
This report includes comprehensive information on the primary and meta forest vegetation data assembled from Bear Brook Watershed in Maine (BBWM). This information represents the first in-depth inventory of the forest vegetation, both woody and non-woody in multiple strata, within the two watersheds initially established at BBWM, West Bear and East Bear, and also the areas adjacent to the east and west of these watersheds. For long-term monitoring of vegetation responses to the continued manipulations and/or the recovery of the ecosystems at BBWM, access to the vegetation baseline information contained within this report is essential.
Tb182: Agricultural Land Changes In Maine: A Compilation And Brief Analysis Of Census Of Agriculture Data, 1850-1997, Soeun Ahn, William B. Krohn, Andrew J. Plantinga, Timothy J. Dalton
Tb182: Agricultural Land Changes In Maine: A Compilation And Brief Analysis Of Census Of Agriculture Data, 1850-1997, Soeun Ahn, William B. Krohn, Andrew J. Plantinga, Timothy J. Dalton
Technical Bulletins
The purpose of this study is to compile the best available long-term historical information on agricultural land use in Maine and to briefly analyze these data to develop a statewide description of Maine's land use history from the mid-1800s to present. Our emphasis is on compiling statistically based information and, in particular, land use data reported in the Census of Agriculture. Objectives were (1) to compile available statewide data on agricultural land and land cover (LULC) in Maine, 1850-1997; (2) to examine temporal and spatial patterns in the LULC of Maine; and (3) to discuss the implications of the major …
Tb181: 2000 Milk Processing Costs In Maine, Timothy J. Dalton, George K. Criner, John Halloran
Tb181: 2000 Milk Processing Costs In Maine, Timothy J. Dalton, George K. Criner, John Halloran
Technical Bulletins
The objective of this study is to provide an estimate of the theoretically lowest achievable costs of processing and distributing milk in Maine. This processing and distribution margin (referred hence as "margin") is estimated for a state-of-the-art processing plant assumed to be located in the Portland, Maine, area. The plant is assumed to produce and distribute a line of products including white milk, chocolate milk, orange juice, and other fruit drinks, and to distribute additional purchased products such as cheeses and yogurts. This report will present information for four plants to better study the impact of plant size and production …
Tb176: Agrelation: A Computerized Decision-Making Tool For Coloraod Potato Beetle Population Management And Environmental Quality Concerns, Charles R. Ziegler, Francis A. Drummond, Darrell W. Donahue, Stewart N. Smith
Tb176: Agrelation: A Computerized Decision-Making Tool For Coloraod Potato Beetle Population Management And Environmental Quality Concerns, Charles R. Ziegler, Francis A. Drummond, Darrell W. Donahue, Stewart N. Smith
Technical Bulletins
Many facets of Maine potato production have been simulated with computer models and expert systems. Given the ongoing improvement of computer technology and validation of past efforts, scientists can now combine several agricultural submodels into one holistic and user-friendly computer application. This bulletin reports on the development of one such application—Agrelation—aimed at modeling a portion of Maine potato production and management.