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Articles 1 - 26 of 26
Full-Text Articles in Life Sciences
An Investigation Of The Relationship Between Black Soldier Fly Larvae Pathogen Suppression And Growth Substrate In Relation To Maine Agricultural Industries, Haley Morrill
Honors College
Insects are promoted as cost-effective and sustainable protein sources for animal feed. Their utilization may help to avoid a predicted global protein shortage. Black soldier fly (Hermetia illucens) larvae (BSFL) grow on organic wastes, converting these wastes into larval biomass which can fulfill this purpose. Potential benefits of using BSFL to remediate organic wastes include reduction of waste mass and bacterial load, along with the sale of larvae as a protein supplement. BSFL suppress the growth of some Gram-positive and Gram-negative human pathogens in these substrates; though suppression of Bacillus cereus, a spore-forming bacterium that causes food-poisoning, …
A Study Of Cooking And Varietal Effects On Potato In Vitro Bile Acid Binding Capacity, Emily Hinkle
A Study Of Cooking And Varietal Effects On Potato In Vitro Bile Acid Binding Capacity, Emily Hinkle
Honors College
Potatoes have received negative press about being unhealthy due to having high starch content, but these vegetables contain many healthful components. Many compounds in food, such as soluble dietary fiber, help reduce serum cholesterol levels by binding to bile acids in the digestive tract and causing the body to draw from serum cholesterol to create new bile acids. Potatoes were prepared three different ways (raw, steamed, steamed then cooled) and different varieties of potatoes were used, each with different chemical compositions (King Harry, Elba, Yukon Gold and All-Blue). The potatoes were subjected to an in vitro digestion to simulate the …
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).
B843: The Ecology, Economics, And Management Of Potato Cropping Systems: A Report Of The First Four Years Of The Maine Potato Ecosystem Project, A. Randall Alford, Francis A. Drummond, Eric R. Gallandt, Eleanor Groden, David A. Lambert, Matt Liebman, Michele C. Marra, Jeffrey C. Mcburnie, Gregory A. Porter, Bacilio Salas
B843: The Ecology, Economics, And Management Of Potato Cropping Systems: A Report Of The First Four Years Of The Maine Potato Ecosystem Project, A. Randall Alford, Francis A. Drummond, Eric R. Gallandt, Eleanor Groden, David A. Lambert, Matt Liebman, Michele C. Marra, Jeffrey C. Mcburnie, Gregory A. Porter, Bacilio Salas
Bulletins
The bulletin reports on the first four years of the Maine Potato Ecosystem Project, a long-term, multidisciplinary study of alternative crop management strategies. The study site is a 15-acre tract on the northern boundary of the University of Maine's Aroostook Farm in Presque Isle, Maine, divided into 96 main plots that are grouped into four blocks. Each block is an area where soil survey data show similar soil characteristics. Thus, given the same production inputs, the crop output is expected to be the same on each plot within a block. Within each block there are 24 plots to which the …
B832: The Profitability Of Supplemental Irrigation For Maine Potatoes, Michele C. Marra, Timothy A. Woods
B832: The Profitability Of Supplemental Irrigation For Maine Potatoes, Michele C. Marra, Timothy A. Woods
Bulletins
The question has arisen among Maine potato growers and other industry personnel whether irrigation technologies can be transferred successfully into humid growing areas such as in Maine and whether they can benefit the Maine potato industry. This report presents the findings of a stud y that attempts to answer the question of whether adoption of two of these newer technologies might be profitable for an individual grower in Maine.
The Transformation Of Farming In Maine, 1940-1985, Richard Wescott, David Vail
The Transformation Of Farming In Maine, 1940-1985, Richard Wescott, David Vail
Maine History
Stone walls running incongruously through deep woods; fields and pastures becoming overgrown with brush; broken-backed barns tum bling in upon themselves; clusters of day lilies and lilacs guarding empty cellar holes — the remains of thousands of farms are scattered across the Maine landscape, relics of another age when farming was the lifeblood of hundreds of rural communities from the Piscataqua to the St. John.
Tb116: Integrated Systems For Managing Potatoes In The Northeast, G. B. White, S. S. Lazarus
Tb116: Integrated Systems For Managing Potatoes In The Northeast, G. B. White, S. S. Lazarus
Technical Bulletins
This technical bulletin presents the results of a research project developed to determine the feasibility of using an integrated pest management (IPM) system to improve economic and environmental benefits for the Northeast region. Research was conducted to develop and evaluate IPM techniques. These techniques were then tested, improved, and implemented in pilot programs on commercial potato farms in Suffolk County and Steuben County, New York, and Aroostook County, Maine.
Tb111: An Examination Of Alternative Investment Strategies For Potato Market Improvement Funds, Raymond J. Nowak, Alan S. Kezis
Tb111: An Examination Of Alternative Investment Strategies For Potato Market Improvement Funds, Raymond J. Nowak, Alan S. Kezis
Technical Bulletins
The primary objective of this study was to implement Potato Market Improvement Fund policy objectives and industry goals, using current production, storage, and packing operation data, to suggest alternative investment strategies for PMIF dollars.
Tb96: A Prediction Model For Maine's Potato Production, Alan S. Kezis, Michael Hammig, Marc Ribaudo
Tb96: A Prediction Model For Maine's Potato Production, Alan S. Kezis, Michael Hammig, Marc Ribaudo
Technical Bulletins
For a state whose economy is significantly dependent on the health of the potato industry, a mechanism to forecast the expected level of production with a reasonable degree of accuracy could be a valuable tool for economic analysis and planning. The objective of this study is to develop an econometric model to predict production using selected data which are available well before the crop is harvested.
B753: The Uptake Of Nutrients By Katahdin Potatoes As Influenced By Soil Moisture Regimes And Rates Of Fertilization, Gurbachan Singh Kalra, Roland A. Struchtemeyer
B753: The Uptake Of Nutrients By Katahdin Potatoes As Influenced By Soil Moisture Regimes And Rates Of Fertilization, Gurbachan Singh Kalra, Roland A. Struchtemeyer
Bulletins
In Aroostook County, Maine, where the annual average rainfall is 35-40 inches, it is generalized by many that moisture is not a limiting factor in potato production. Weather data for Aroostook do, however, show frequent periods of low rainfall during the growing season, and these periods do cause temporary moisture deficiencies in the crop. Struchtemeyer, based on irrigation research in Maine, showed that the potato plant needs approximately 1 inch of water per week during the growing season. From the 1936 to 1955 Maine Weather Records, Pullen and Schrumpf (23) found that about 70 percent of the time, less than …
Tb85: A New Potato Scab Problem In Maine, F. E. Manzer, G. A. Mcintyre, D. C. Merriam
Tb85: A New Potato Scab Problem In Maine, F. E. Manzer, G. A. Mcintyre, D. C. Merriam
Technical Bulletins
The scientific literature is filled with conflicting reports on the development of the common scab disease of potatoes and its causal organism. One unresolved question is soil reaction, once thought to be the answer in controlling this disease. Scientific studies an d practical experience over a long period had shown that acid soils having a pH of approximately 5.3 or below usually did not support common scab development, though sporadic and unexplained reports of disease occurrence in these soils were observed. In the late 1950s, however, such reports became more frequent in Maine and before the mid-1960s, losses relate d …
Tb83: Insecticidal Control Of Potato Infesting Aphids In Northeastern Maine, Geddes W. Simpson, R. H. Storch
Tb83: Insecticidal Control Of Potato Infesting Aphids In Northeastern Maine, Geddes W. Simpson, R. H. Storch
Technical Bulletins
Aphid populations for the growing seasons of 1970, 1971, and 197 2 were variable. It is possible, however, to rate the efficacy of the various insecticides tested in controlling potato-infesting aphids in northeastern Maine. Soil applications of aldicarb and DS 15,647 and foliar application of acephate were the most effective materials tested. The insecticides phosmet (foliar) and phoxim (soil) did not provide much protection against potato-infesting aphids in these tests. Bayer 77,049, parathion, Penick SBP 1382, Sandoz-Wander 52,139 and Uniroyal 840 did not provide effective control of potato-infesting aphids at the rates used in these tests. All other insecticides tested …
Tb51: Seasonal History Of The Buckthorn Aphid And Suitability Of Alder-Leaved Buckthorn As A Primary Host In Northeastern Maine, W. A. Shands, Geddes W. Simpson
Tb51: Seasonal History Of The Buckthorn Aphid And Suitability Of Alder-Leaved Buckthorn As A Primary Host In Northeastern Maine, W. A. Shands, Geddes W. Simpson
Technical Bulletins
The buckthorn aphid, Aphis nasturtii Kaltenbach, is one of four species of aphids commonly infesting potatoes, Solarium tuberosum L., in Maine. It is widely distributed over the northeastern part of the United States and is a pest of potatoes elsewhere in the world, including parts of England and Europe. The other three species of potato-infesting aphids in Maine are the green peach aphid, Myzus persicae (Sulzer), the potato aphid, Macrosiphum euphorbiae (Thomas ) and the foxglove aphid, Acyrthosiphon solani (Kaltenbach).
Tb58: Further Evaluation Of Entomogenous Fungi As A Biological Agent Of Aphid Control In Northeastern Maine, W. A. Shands, Geddes W. Simpson, I. M. Hall, Corinne C. Gordon
Tb58: Further Evaluation Of Entomogenous Fungi As A Biological Agent Of Aphid Control In Northeastern Maine, W. A. Shands, Geddes W. Simpson, I. M. Hall, Corinne C. Gordon
Technical Bulletins
An intensive survey and study were made each year from 1952 through 1962 to determine seasonal abundance of living and dead diseased aphids by species on potatoes and to collect many of the infected specimens for exact diagnosis. Results of the study disclosed that the action of entomogenous fungi was outstanding in reducing the size of aphid populations on potatoes. This technical bulletin reports on the results of the continuance of the study from 1963 through 1969. However, the collection of dead, diseased aphids throughout the summer was done only from 1963 through 1966 ; thereafter, diagnosis was limited to …
Tb60: Survey Of Internal Parasites Of Potato-Infesting Aphids In Northeastern Maine, 1963 Through 1969, W. A. Shands, Geddes W. Simpson, Corinne C. Gordon
Tb60: Survey Of Internal Parasites Of Potato-Infesting Aphids In Northeastern Maine, 1963 Through 1969, W. A. Shands, Geddes W. Simpson, Corinne C. Gordon
Technical Bulletins
This technical bulletin reports the results of an annual survey conducted from 1963 through 1969 of parasitized aphids on potatoes in northeastern Maine, chiefly on Aroostook Farm, near Presque Isle. The authors discuss the role of parasites in control of aphids on potato plants not treated with insecticides and list the primary parasites and hyperparasites reared from potato-infesting species of aphids collected during the survey.
Tb56: Effects Of Differing Abundance Levels Of Aphids And Of Certain Virus Diseases Upon Yield And Virus Disease Spread In Potatoes, W. A. Shands, Geddes W. Simpson, Barbara A. Seaman, F. S. Roberts
Tb56: Effects Of Differing Abundance Levels Of Aphids And Of Certain Virus Diseases Upon Yield And Virus Disease Spread In Potatoes, W. A. Shands, Geddes W. Simpson, Barbara A. Seaman, F. S. Roberts
Technical Bulletins
In eight years during the period 1944 to 1954, a study was conducted on Aroostook Farm, Presque Isle, Maine, to develop ways of obtaining and maintaining varying levels of aphid abundance on potato plants. Methods for measuring aphid abundance and their effects on yield and virus transmission were devised. These techniques were then used to determine the effects of varying all-season levels of abundance of the aphids and of virus reservoirs of two potat o diseases upon yield of potatoes and the spread of leaf roll and spindle tuber in four varieties of potatoes. The results of that study are …
Tb57: Effects Of Cultural Methods For Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. J. Murphy
Tb57: Effects Of Cultural Methods For Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. J. Murphy
Technical Bulletins
A study was conducted at Aroostook Farm, near Presque Isle, Maine, 1954 to 1958, inclusive, to determine the effects of certain agronomic cultural practices designed to delay emergence of potato plants and to decrease their exposure to infestation by spring migrants. This technical bulletin reports the results of that study.
Tb54: Importance Of Arthropod Predators In Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. E. Wave, C. C. Gordon
Tb54: Importance Of Arthropod Predators In Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. E. Wave, C. C. Gordon
Technical Bulletins
From 1942 to 1969, concurrent studies were made to identify and assess the importance of biological agents affecting abundance of the potato-infesting species of aphids in northeastern Maine. These authors report the results of studies relating to arthropod predators of aphids on the potato crop, principally from 1952 through 1969.
Tb52: Seasonal Population Trends And Productiveness Of The Potato Aphid On Swamp Rose In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. E. Wave
Tb52: Seasonal Population Trends And Productiveness Of The Potato Aphid On Swamp Rose In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. E. Wave
Technical Bulletins
Studies were conducted in northeastern Maine to determine seasonal population trends and productiveness of the potato aphid on swamp rose. The results presented and discussed concern chiefly chronological and phenological aspects of the utilization of swamp rose as a primary host of the aphid; time-temperature developmental requirements of the aphid in spring; productiveness of the aphid in caged colonies on swamp rose in spring; population trends of the aphid on naturally occurring, undisturbed swamp rose in spring and in fall; populations of aphid eggs on swamp rose in November and again in mid-April of the following year; and a comprehensive …
Tb39: Canada Plum, Prunus Nigra Aiton, As A Primary Host Of The Green Peach Aphid, Myzus Persicae (Sulzer), In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. E. Wave
Tb39: Canada Plum, Prunus Nigra Aiton, As A Primary Host Of The Green Peach Aphid, Myzus Persicae (Sulzer), In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. E. Wave
Technical Bulletins
Studies were conducted to determine the role of Canada plum as a host of the green peach aphid in northeastern Maine and to assess its importance as a source of infestation by the aphid on potatoes. The results relate chiefly to chronological and phenological aspects of the use of Canada plum as a primary host of this aphid; temperature developmental requirements of the aphid on this plant in spring; productiveness of spring migrants of the aphid in thickets and in cages; interrelationships between fall aphid populations on foliage, and egg deposition and overwintering to naturally occurring aphid colonies in spring …
B624: A Comparison Of Several Peeling Methods As Applied To Maine Potatoes For Processing, R. C. Pelletier, J. S. Getchell, M. E. Highlands, D. R. Clark
B624: A Comparison Of Several Peeling Methods As Applied To Maine Potatoes For Processing, R. C. Pelletier, J. S. Getchell, M. E. Highlands, D. R. Clark
Bulletins
The bulletin presents the results of a study on the affect of peeling methods on peeling and trimming losses of white potatoes for the processed potato industry. The researchers used Katahdin, Kennebec, and Russet Burbank potatoes, grown in Maine over two growing seasons (1959-60). Potatoes were grown, harvested, graded (when required) and stored by the Plants and Soils Department under commercial storage conditions. Potatoes were peeled shortly after digging, after four months' storage, and after seven months' storage. Under the conditions of this study, for both series, peel, trim and total losses were significantly greater for the abrasive method used …
Tb6: Importance Of Entomogenous Fungi In Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, I. M. Hall
Tb6: Importance Of Entomogenous Fungi In Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, I. M. Hall
Technical Bulletins
This publication reports on field studies of aphid biology and of associated ecological factors made near Presque Isle, Maine. Results showed that, among the biological agents affecting aphid population trends from 1952 through 1962, entomogenous fungi were outstanding in reducing the size of populations of the potato aphid developing on potatoes treated with fungicides but not with insecticides. The potato aphid was most affected by fungi and the buckthorn aphid least affected by them. The green peach and foxglove aphids were intermediate. Predators exerted a noticeably adverse effect upon aphid population trends in two of the 11 years.
Tb5: Effects Of Factorially Combined Levels Of Sulfur And Magnesium On Potato Plants (Solanum Tuberosum), Harold W. Gausman, George O. Estes
Tb5: Effects Of Factorially Combined Levels Of Sulfur And Magnesium On Potato Plants (Solanum Tuberosum), Harold W. Gausman, George O. Estes
Technical Bulletins
Katahdin potatoes were grown in the greenhouse in 2-gallon, crocks containing a virgin Caribou loam soil. Factorially combined levels of S and Mg, each at an equivalent rate of 0, 10, 20, and 30 pounds per acre, were imposed as treatments for the first five of seven crops. The sixth and seventh crops of potatoes were grown primarily to further deplete the soil of S and Mg and to enhance or accentuate plant deficiency symptoms which occurred quite intensively during growth of the fifth crop of potatoes. The objective was to evaluate effects of factorially combined levels of sulfur and …
Tb3: Studies Concerning Effects Of Chloride And Potassium On The Nutrition Of Potato Plans, Solanum Tuberosum, Harold W. Gausman
Tb3: Studies Concerning Effects Of Chloride And Potassium On The Nutrition Of Potato Plans, Solanum Tuberosum, Harold W. Gausman
Technical Bulletins
To evaluate the premise that Cl- and other anions might influence tuber quality by affecting the esterification of inorganic phosphorus and subsequent energy transformations involving metabolic processes of carbohydrate synthesis or degradation, the author studied the effects of Cl ~ in relation to cations and anions on nutrient uptake and inorganic phosphorus transformations.
B509: Commercial Washing Of Maine Potatoes, Alvah L. Perry
B509: Commercial Washing Of Maine Potatoes, Alvah L. Perry
Bulletins
Shippers and receivers displayed considerable interest in a previous study which showed that shoppers would choose washed potatoes in preference to unwashed potatoes even though the washed potatoes were being sold at a premium price. The previous study was carried out with washing, grading, packaging, transporting, displaying, and pricing of the potatoes under the direct supervision of research personnel. The industry expressed a desire to test the acceptance of washed potatoes under commercial conditions where market forces would control demand and establish price. This study was conducted with that purpose in mind.
B493: Consumer Acceptance Of Washed Maine Potatoes, Alvah L. Perry, Charles H. Merchant
B493: Consumer Acceptance Of Washed Maine Potatoes, Alvah L. Perry, Charles H. Merchant
Bulletins
The broad objective of this study was to determine the feasibility as well as the problems associated with washing Maine potatoes. This is particularly important at this time in view of the general preference of housewives for clean potatoes as determined by a national survey by the United States Department of Agriculture and the increasing supplies of washed potatoes from competing areas in markets Maine normally serves. Specific objectives of this study were to determine (1) the keeping qualities of washed potatoes, (2) the costs associated with washing Maine potatoes including equipment, fuel, water, and shrinkage, and (3) the acceptance …