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Articles 31 - 57 of 57
Full-Text Articles in Entire DC Network
Tb170: The Flora And Plant Communities Of Maine Peatlands, Dennis S. Anderson, Ronald B. Davis
Tb170: The Flora And Plant Communities Of Maine Peatlands, Dennis S. Anderson, Ronald B. Davis
Technical Bulletins
The objectives of this study are (1) to classify and describe the plant communities of Maine peatlands, (2 ) to demonstrate the relationships between the communities, (3) to characterize the communities in terms of physical and chemical variables, (4) to show the geographic distribution of the communities, (5) to investigate the relationships between plant communities and peatland geomorphic/hydrologic types, (6) to report the areal cover of vegetation cover-types (aggregated communities ) for individual peatlands, and (7) to document the flora of Maine's peatlands, including vascular plants, bryophytes, and lichens.
Tb167: Management And Winter Hardiness Of Hairy Vetch In Maine, Jean-Luc Jannink, Laura C. Merrick, Matt Liebman, Elizabeth A. Dyck
Tb167: Management And Winter Hardiness Of Hairy Vetch In Maine, Jean-Luc Jannink, Laura C. Merrick, Matt Liebman, Elizabeth A. Dyck
Technical Bulletins
The research presented here describes a set of three different experiments that sought to establish appropriate management practices for hairy vetch in Maine, and to determine whether variability for winter hardiness exists among germplasm available commercially or from gene banks. Specific objectives of the first experiment were to evaluate effects of planting date and companion crop on crop and weed dry weight and total above-ground N content, at two sites differing in drainage. In a second experiment, the winter hardiness of hairy vetch from six commercial sources and the effect of a rye companion crop on hardiness were evaluated. In …
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 …
B844: Checklist Of The Vascular Plants Of Maine Third Revision, Christopher S. Campbell, Heman P. Adams, Patricia Adams, Alison C. Dibble, Leslie M. Eastman, Susan C. Gawler, Linda L. Gregory, Barbara A. Grunden, Arthur D. Haines, Ken Jonson, Sally C. Rooney, Thomas F. Vining, Jill E. Weber, Wesley A. Wright
B844: Checklist Of The Vascular Plants Of Maine Third Revision, Christopher S. Campbell, Heman P. Adams, Patricia Adams, Alison C. Dibble, Leslie M. Eastman, Susan C. Gawler, Linda L. Gregory, Barbara A. Grunden, Arthur D. Haines, Ken Jonson, Sally C. Rooney, Thomas F. Vining, Jill E. Weber, Wesley A. Wright
Bulletins
This is the third revision of the Checklist of Vascular Plants of Maine. Like its predecessors, it lists all ferns and related plants, conifers, and flowering plants native and naturalized in Maine and records their county-level distribution in the state. The first Check- list (Ogden et al. 1948) was based on specimens in herbaria at the University of Maine (hereafter referred to as MAINE), Portland Society of Natural History, New England Botanical Club, Gray Herbarium of Harvard University, and the private collection of Glen D. Chamberlain of Presque Isle, Maine (now part of MAINE). Bean et al. (1966) revised …
Tb156: Woody Landscape Plant Cold-Hardiness Ratings, Paul E. Cappiello, Lyle E. Littlefield
Tb156: Woody Landscape Plant Cold-Hardiness Ratings, Paul E. Cappiello, Lyle E. Littlefield
Technical Bulletins
The Lyle E. Littlefield Ornamentals Trial Garden has served as an excellent choice for testing winter survival of landscape plants. It is located on approximately 5 hectares of land comprising the highest elevation and windiest site on Marsh Island. The site is in USDA hardiness zone 4a. The soil is highly variable, ranging from a fine sandy loam to marine clay, with many stones throughout. In general, most plants are cultivated in beds mulched with mixed soft wood bark from a local mill. Plants receive supplemental irrigation during the first two seasons after planting, and thereafter irrigation is supplied only …
Tb146: The Eccentric Bogs Of Maine: A Rare Wetland Type In The United States, Ronald B. Davis, Dennis S. Anderson
Tb146: The Eccentric Bogs Of Maine: A Rare Wetland Type In The United States, Ronald B. Davis, Dennis S. Anderson
Technical Bulletins
The specific objectives of this project were to (1) map the distribution in Maine of eccentric bogs; (2) map the surface physical features and vegetation of a large sample of Maine's eccentric bogs; (3) determine for these bogs the vascular plant, bryophyte, and lichen flora; types and structure of vegetation; peat interstitial water chemistry; relationships between vegetation-flora and water chemistry; subsurface features relating to origins and development; and (4) evaluate the bogs for their unique and exemplary characteristics an d recommend certain of them to the Maine Critica l Areas Program for designation as Critical Areas.
Tb143: Reproductive Phenologies Of Selected Flowering Plants In Eastern Maine Forests, R. W. Hansen, S. B. Hansen, E. A. Osgood
Tb143: Reproductive Phenologies Of Selected Flowering Plants In Eastern Maine Forests, R. W. Hansen, S. B. Hansen, E. A. Osgood
Technical Bulletins
This technical bulletin documents both flowering and fruiting patterns during the spring and summer of 1982 of plant species found in eastern Maine forests.
B830: An Atlas Of The Native Woody Plants Of Maine: A Revision Of The Hyland Maps, Janet S. Mcmahon, George L. Jacobson Jr., Fay Hyland
B830: An Atlas Of The Native Woody Plants Of Maine: A Revision Of The Hyland Maps, Janet S. Mcmahon, George L. Jacobson Jr., Fay Hyland
Bulletins
In 1944 Fay Hyland and Ferdinand Steinmetz published The Woody Plants of Maine: Their Occurrence and Distribution. This small bulletin catalogs the state's native and exotic trees, shrubs, and woody vines. In-state distributions are given for 513 taxa, including 366 species, Ill varieties and named forms, and 36 hybrids. Hyland collected information for this comprehensive work from three sources: a systematic field survey of the state which he personally conducted between 1933 and 1939; a review of botanical publications on Maine flora; and herbarium records from the New England Botanical Club, Gray Herbarium, Arnold Arboretum, the Boston Society of …
B810: Ectomycorrhizae Of Maine 3. A Listing Of Hygrophorus With Associated Hosts, Richard L. Homola, Miroslaw M. Czapowskyj, Barton M. Blum
B810: Ectomycorrhizae Of Maine 3. A Listing Of Hygrophorus With Associated Hosts, Richard L. Homola, Miroslaw M. Czapowskyj, Barton M. Blum
Bulletins
Hygrophori have been collected and identified with their possible ectomycorrhizal associates in Maine. Most of the ectomycorrhizal relationships reported from Maine were confirmed by the work of others. The information on edibility is from authors' popular mushroom guides. Colored photos of forty-four Hygrophori are included here.
B780: A Cost Analysis Of Pruning Procedures In Lowbush Blueberry Production, Eric J. Hanson, Amr A. Ismail, Homer Metzger
B780: A Cost Analysis Of Pruning Procedures In Lowbush Blueberry Production, Eric J. Hanson, Amr A. Ismail, Homer Metzger
Bulletins
Burning fields with fuel oil is currently the most practical method of pruning blueberries but is costly and destructive to the organic material on the surface of the soil. Fuel oil is a nonrenewable resource that is rapidly increasing in cost and, in the future, may become less readily available for this use. The need to develop alternative means of pruning lowbush bleuberries is evident. This bulletin compares the economics of six pruning procedures on operations of three sizes. The budgets are based on certain assumptions and costs which will change over time. The results will allow blueberry growers to …
B779: Ectomycorrhizae Of Maine. 2 A Listing Of Lactarius With The Associated Hosts (With Additional Information On Edibility), Richard L. Homola, Miroslaw M. Czapowskyj
B779: Ectomycorrhizae Of Maine. 2 A Listing Of Lactarius With The Associated Hosts (With Additional Information On Edibility), Richard L. Homola, Miroslaw M. Czapowskyj
Bulletins
Thirty-nine Lactarii have been collected and identified with their possible ectomycorrhizal associates for Maine. Many of the Lactarius are new reports for Maine. Most of the ectomycorrhizal relationships reported from Maine are confirmed by the work of others. The edibility comments are those of the authors from the popular mushroom guides mentioned. Colored photos of thirty-nine Lactarii are included.
Tb99: Flora Of Oxford County, Maine, Christopher S. Campbell, Leslie M. Eastman
Tb99: Flora Of Oxford County, Maine, Christopher S. Campbell, Leslie M. Eastman
Technical Bulletins
This is a study of the vascular plants occurring in Oxford County, Maine. Plants with vascular or conductive tissue (kingdom Plantae, division Tracheophyta) include the ferns and their "allies" (horsetails and lycopods) and the seed-bearing plants. Our aim has been to determine which plants occur in the county and, based on herbarium collections and observations, their habitat preferences, frequency of occurrence, and geographic distribution. We have also endeavored to explain the nature of the flora first in terms of the various factors which influence its composition and second by grouping the plants into the most important natural associations.
Tb97: Evapotranspiration From Vegetative Surfaces In Maine, Stewart M. Goltz
Tb97: Evapotranspiration From Vegetative Surfaces In Maine, Stewart M. Goltz
Technical Bulletins
Diurnal evapotranspiration measurements were made over lowbush blueberries and potatoes in Maine during selected portions of the 1977 and 1978 growing seasons. Half hourly measurements were made using a Bowen ratio-energy budget method. Data from these measurements provided the principal energy budget components, an evaluation of potential evapotranspiration, and an array of diagnostic measures used to evaluate the partitioning of available energy into sensible and latent heat. Evapotranspiration rarely reached potential values and a large variability was found to exist. In an attempt to provide a reliable daily estimate of evapotranspiration from potatoes, using a minimum number of environmental measurements, …
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 …
B744: The Woody Plants Of Sphagnous Bogs Of Northern New England And Adjacent Canada, Fay Hyland, Barbara Hoisington
B744: The Woody Plants Of Sphagnous Bogs Of Northern New England And Adjacent Canada, Fay Hyland, Barbara Hoisington
Bulletins
Bogs are fascinating places to visit! One may compare these sphagnum-covered areas with huge amphitheatres covered with wall- to-wall carpets intricately woven into multistructured mats. To the novice or one without botanical training, these areas might appear as monotonous assemblages of only a few species of stunted plants so similar in appearance as to appear homogeneous, but a keen observer will detect as many different species as might be found in a rich woods. By use of keys, descriptions, and illustrations provided , identification of all species is made easy and certain. Fifty or more different kinds of woody plants …
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 …
B735: Ectomycorrhizae Of Maine 1: A Listing Of Boletaceae With The Associated Hosts, Richard L. Homola, Paul A. Mistretta
B735: Ectomycorrhizae Of Maine 1: A Listing Of Boletaceae With The Associated Hosts, Richard L. Homola, Paul A. Mistretta
Bulletins
Forty-nine boletes have been collected and identified with their possible ectomycorrhizal associates for Maine. Most of the boletes are new reports for Maine. Acer negundo is a new host report for Boletinellus merulioides. Most of the ectomycorrhizal relationships reported here for Maine are confirmed by the work of others. Colored photos of thirty-seven Maine boletes are included.
Tb70: Physical And Chemical Changes Associated With The Development Of The Lowbush Blueberry Fruit Vaccinium Angustifolium Ait., Amr A. Ismail, Walter J. Kender
Tb70: Physical And Chemical Changes Associated With The Development Of The Lowbush Blueberry Fruit Vaccinium Angustifolium Ait., Amr A. Ismail, Walter J. Kender
Technical Bulletins
The objective of this investigation was to determine the growth characteristics, changes in the soluble solids, pH, and titratable acidity for the purpose of defining and describing stages in the growth of the blueberry fruit.
Tb71: Fiber Analysis And Distribution In The Leaves, Juvenile Stems And Roots Of Ten Maine Trees And Shrubs, Fay Hyland
Tb71: Fiber Analysis And Distribution In The Leaves, Juvenile Stems And Roots Of Ten Maine Trees And Shrubs, Fay Hyland
Technical Bulletins
The value of woody plants in the paper-making industry is unquestioned. As our present supply of the readily accessible and more valuable species of this natural resource dwindles, it may become necessary to use shrubs and waste from logging operations. This study focuses on the juvenile wood eastern white pine, red spruce, balsam fir, eastern hemlock, gray birch, red maple, quaking aspen, pin cherry, speckled alder, and slender willow.
Tb64: Low Temperature Injury To Apple Trees In Maine, M. T. Hilborn, W. C. Stiles
Tb64: Low Temperature Injury To Apple Trees In Maine, M. T. Hilborn, W. C. Stiles
Technical Bulletins
This technical bulletin presents an overview of low temperature injury to apple trees. They describe the winter killing of apple trees in Maine in 1933-34 and describe hardy trunk forming stocks. They also report on a trial orchard at Highmoor Farm for trunk-forming stock and the influence of stock-scion combination on hardiness. They end with five recommendations for apple growers.
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 …
Tb30: A Critical Evaluation Of Results From Spectographic Analysis Of Plan Tissue, Paul N. Carpenter, Alice Ellis, Harold E. Young, Thomas E. Byther
Tb30: A Critical Evaluation Of Results From Spectographic Analysis Of Plan Tissue, Paul N. Carpenter, Alice Ellis, Harold E. Young, Thomas E. Byther
Technical Bulletins
For this study, samples of wheat, corn, timothy, orchardgrass, alfalfa, Bermuda grass, and tomato were analyzed for eleven elements. A statistical study of these data was undertaken to determine the precision of the spectrographic analyses and to determine the precision that could be expected from analyses by this method.
Tb13: The Use Of Aerial Photographs In Studies Of Marsh Vegetation, David P. Olson
Tb13: The Use Of Aerial Photographs In Studies Of Marsh Vegetation, David P. Olson
Technical Bulletins
This publication describes a study using aerial photographs of marsh habitat in Merrymeeting Bay, Maine, to determine the kind of information relative to marsh vegetation that could be obtained from them, and also to determine the accuracy of the photographic interpretation.
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.
B595: An Illustrated Review Of Apple Virus Diseases, R. C. Mccrum, J. G. Barrat, M. T. Hilborn, A. E. Rich
B595: An Illustrated Review Of Apple Virus Diseases, R. C. Mccrum, J. G. Barrat, M. T. Hilborn, A. E. Rich
Bulletins
The writers have attempted to review the available literature on the subject and to organize it in an orderly fashion. The name, symptomatology, host range, and geographic distribution are given for each virus disease. Where it was possible illustrations of each disorder have also been included. This bulletin addresses the following apple virus diseases: apple mosaic, flat limb, rubbery wood, stem pitting, spy 227 apple reaction, dwarf fruit and decline, chat fruit, chlorotic leaf spot, leaf pucker, dapple apple, false sting and green crinkle, green mottle, ring spot, star cracking, scar skin, rough skin, apple proliferation, rosette
B529: Blossom And Twig Blight Of Low-Bush Blueberries (Botrytis Cinerea), E. Neil Pelletier, M. T. Hilborn
B529: Blossom And Twig Blight Of Low-Bush Blueberries (Botrytis Cinerea), E. Neil Pelletier, M. T. Hilborn
Bulletins
This bulletin presents the results of research on three aspects of the disease blossom and twig blight, (1) seasonal development, (2) the effect of environmental factors, and (3) chemical control. The work was supported financially by Maine Blueberry Tax funds.