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Articles 1 - 19 of 19
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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.
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 …
Tb175: A Numerical Method And Supporting Database For Evaluation Of Maine Peatlands As Candidtate Natural Areas, Ronald B. Davis, Dennis S. Anderson
Tb175: A Numerical Method And Supporting Database For Evaluation Of Maine Peatlands As Candidtate Natural Areas, Ronald B. Davis, Dennis S. Anderson
Technical Bulletins
In Maine, non-tidal peatlands comprise the last major terrestrial ecosystem group remaining largely undisturbed by humans, and for which there still exists a full range of options for protection in near-pristine condition. To make the best choices of areas to protect, ecologically based prioritization of candidate natural areas is needed. This technical bulletin presents a quantitative method of evaluation of the natural features of peatlands—providing the fundamental tool for establishing peatland protection priorities. We apply the method to the evaluation of 76 Maine peatlands representing all the morphologic/hydrologic peatland types in the biophysical regions of the state.
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 …
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.
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, …
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 …
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.