Lawrence Abrahamson - Academia.edu (original) (raw)
Papers by Lawrence Abrahamson
Journal of Economic Entomology, Apr 16, 1973
The forest tent caterpillar, Malacosoma disstria Hubner, has been epidemic in swamp stands of wat... more The forest tent caterpillar, Malacosoma disstria Hubner, has been epidemic in swamp stands of water tupelo, Nyssa aquatica L., and blackgum, Nyssa sylvatica var. biflora, in southern Louisiana and Alabama for many years (Morris 1965). In the past 2 years, over 500,000 acres/year were defoliated by this insect. Repeated defoliation of tupelo and blackgum reduces tree growth and seed crops (Morris and Orr 1963).
This file was created by scanning the printed publication. Text errors identified by the software... more This file was created by scanning the printed publication. Text errors identified by the software have been corrected; however, some errors may remain.
Biomass-for-bioenergy cropping and production systems based on willow (and poplar) planted and ma... more Biomass-for-bioenergy cropping and production systems based on willow (and poplar) planted and managed at high densities and short (3 to 4 year) coppice harvest cycles, providing fuel for co-firing with coal (or other types of energy conversion) can be economically, ecologically and environmentally sustainable. All of these areas are crucial to the successful commercialization of this biomass-bioenergy system. Current knowledge and ongoing research and development indicate that the production and utilization systems involved are environmentally and ecologically acceptable. Therefore two of the primary constraints to commercialization have been met. The remaining constraint is economic viability based on cost of production and use, the value of environmental externalities (such as atmospheric emissions), and potential government public policy actions to promote this system of providing a locally produced and renewable farm crop and fuel. Developments needed to overcome the economic constraints are known, and should be bolstered by the environmental and ecological quality of the system.
University Microfilms eBooks, 1969
![Research paper thumbnail of Pilot control project using trichloforn [i.e. trichlorfon] and Bacillus thuringiensis against forest tent caterpillar in southwest Alabama /](https://attachments.academia-assets.com/113233240/thumbnails/1.jpg)
](Registered rates of trichlorfon and Bacillus thuringiensis were applied aerially to forest tent c... more Registered rates of trichlorfon and Bacillus thuringiensis were applied aerially to forest tent caterpillar (Malacosoma dis stria Hiibner) infested water tupelo ponds in Alabama in March and April, 1975. Data were collected to determine the effectiveness of these insecticides in preventing defoliation on large scale plots, and to determine their impact on selected nontarget organisms in a swamp situation. Aerial application of trichlorfon provided rapid and nearly complete collapse of the forest tent caterpillar population in a 900-acre (364 ha) pond. Timing and application parameters were near optimum for this treatment. Treatment efficacy was evident from heavy larval mortality, cessation of defoliation, and an increase in canopy foliage which was measurable within a week following application. Foliage loss in the untreated control block reached nearly 95 percent in this same period. Population reduction was sufficient to prevent occurrence of damaging populations in 1976. B. thuringiensis provided excellent kill when applied against late instar larvae. Subacute levels of trichlorfon residues were detected in tissue analyses of birds, snakes, mammals, and snails 3 and 26 days after treatments.
Weed Technology, Dec 1, 1992
Several application modes and methods (schemes) of using herbicides are available to control unde... more Several application modes and methods (schemes) of using herbicides are available to control undesirable vegetation on electric transmission line rights-of-way (ROW). Preferential use of a management scheme can be based on its cost effectiveness, i.e., degree of vegetation control and treatment cost. A treatment that increases/maintains desirable plants, decreases/maintains undesirable plants, and has relatively low cost, can be considered cost effective. Three common herbicides, 2,4-D, picloram and triclopyr, were applied in the field to test treatment mode (selective and nonselective) and method (cut stump, basal, and stem-foliar) effects on cost effectiveness during initial clearing and first and second conversion cycles on one electric transmission line ROW in Upstate New York. Clear or selective cutting with no herbicide was most cost effective during initial clearing. Nonselective and selective stem-foliar schemes were most cost effective during the first and second conversion cycles, respectively.
Aspects of applied biology, 2011
Summary Yield is an important factor in determining the economic feasibility of willow biomass cr... more Summary Yield is an important factor in determining the economic feasibility of willow biomass crops. Over the past 18 years a series of yield trials have been established across North America with older clones from the Ontario Ministry of Natural Resources and the University of Toronto and new genotypes from the SUNY-ESF breeding programme. One trial that has been harvested four times showed that the yield of four commercial clones increased by 23.0% from the first to second rotation and by 30.8% from the first to fourth rotation. Quantifying these changes is important when modeling production and cash flow of these perennial systems. Across all yield trials, those with new willow clones have produced 38% more biomass than trials with the older clones. The top three new clones in each of the nine trials that have been harvested produced a mean yield of 11.5 odt ha -1 yr -1 , which was 13.9% better than the three older reference clones in these trials.
Annals of The Entomological Society of America, Sep 15, 1967
ABSTRACT The mycangia of Trypodendron betulae Swaine and T. retusum (LeConte) are described and c... more ABSTRACT The mycangia of Trypodendron betulae Swaine and T. retusum (LeConte) are described and characterized with microphotographs. The mycangia are the prothoracicpleural type and are similar to the mycangia of other species of Trypodendron. It was hypothesized that the secretions into the mycangium contribute to the “ambrosia cell growth form in the symbiontic fungi.
... SE Area, State and Private Forestry, USDA Forest Service, Atlanta, GA. Peters, JF, AR Van Ros... more ... SE Area, State and Private Forestry, USDA Forest Service, Atlanta, GA. Peters, JF, AR Van Rossen, KAH Heremans and L. Dolcombe. 1975. ... 1980. Western forest nursery herbicides study, Rocky Mountain-Great Basin segment. In: Abstracts-1980 meeting Weed Sci. Soc. ...
... Additional keywords: Malacosoma diss-tria, Bacillus thuringiensis, Entomoph-thora megasperma,... more ... Additional keywords: Malacosoma diss-tria, Bacillus thuringiensis, Entomoph-thora megasperma, polyhedrosis virus, tri-chlorfon, swamp forest. ... Rivers in southwestern Alabama have been repeatedly defoliated by forest tent caterpillars (Malacosoma disstria Hubner) over the ...
Annals of The Entomological Society of America, Jan 15, 1970
ABSTRACT The mycangia of Trypodendron betulae Swaine and T. retusum (LeConte) are described and c... more ABSTRACT The mycangia of Trypodendron betulae Swaine and T. retusum (LeConte) are described and characterized with microphotographs. The mycangia are the prothoracicpleural type and are similar to the mycangia of other species of Trypodendron. It was hypothesized that the secretions into the mycangium contribute to the “ambrosia cell growth form in the symbiontic fungi.
Forestry sciences, 1984
The twig-infesting scolytid beetles Pityophthorous pulicarius and P. puberulus were exonerated fr... more The twig-infesting scolytid beetles Pityophthorous pulicarius and P. puberulus were exonerated from the role of suspected vectors of Scleroderris canker but a significantly reduced rate of infections in red pines treated with the systemic insecticide carbofuran (FuradanR) indicated that insects may nonetheless exacerbate the disease outbreak by providing infection courts for windborn and rain-splashed conidia.
Journal of Economic Entomology, Feb 1, 1977
... C. MORRIS,3and NA OVERGAARD' Southern FOI'estExperiment Station, Forest Service, US D... more ... C. MORRIS,3and NA OVERGAARD' Southern FOI'estExperiment Station, Forest Service, US Department of Agriculture ABSTRACT In 3 studies to control the ... Data were analyzed by analyses of variance and Duncan's new multiple range test (0.05 level of significance). ...
Decisions early in the design and installation process have a long term effect Select the plant... more Decisions early in the design and installation process have a long term effect Select the plants most suited for the site conditions and goal of the living snow fence Proper site preparation is essential and will provide benefits for years in the future Weeds are the largest challenge but can be managed using a variety of techniques © The Research Foundation of SUNY Questions and Discussion "We cannot keep it from snowing, but we can influence the wind that carries tons of blowing and drifting snow"-Gullickson et al. 1999.
Journal of Economic Entomology, Apr 16, 1973
The forest tent caterpillar, Malacosoma disstria Hubner, has been epidemic in swamp stands of wat... more The forest tent caterpillar, Malacosoma disstria Hubner, has been epidemic in swamp stands of water tupelo, Nyssa aquatica L., and blackgum, Nyssa sylvatica var. biflora, in southern Louisiana and Alabama for many years (Morris 1965). In the past 2 years, over 500,000 acres/year were defoliated by this insect. Repeated defoliation of tupelo and blackgum reduces tree growth and seed crops (Morris and Orr 1963).
This file was created by scanning the printed publication. Text errors identified by the software... more This file was created by scanning the printed publication. Text errors identified by the software have been corrected; however, some errors may remain.
Biomass-for-bioenergy cropping and production systems based on willow (and poplar) planted and ma... more Biomass-for-bioenergy cropping and production systems based on willow (and poplar) planted and managed at high densities and short (3 to 4 year) coppice harvest cycles, providing fuel for co-firing with coal (or other types of energy conversion) can be economically, ecologically and environmentally sustainable. All of these areas are crucial to the successful commercialization of this biomass-bioenergy system. Current knowledge and ongoing research and development indicate that the production and utilization systems involved are environmentally and ecologically acceptable. Therefore two of the primary constraints to commercialization have been met. The remaining constraint is economic viability based on cost of production and use, the value of environmental externalities (such as atmospheric emissions), and potential government public policy actions to promote this system of providing a locally produced and renewable farm crop and fuel. Developments needed to overcome the economic constraints are known, and should be bolstered by the environmental and ecological quality of the system.
University Microfilms eBooks, 1969
Registered rates of trichlorfon and Bacillus thuringiensis were applied aerially to forest tent c... more Registered rates of trichlorfon and Bacillus thuringiensis were applied aerially to forest tent caterpillar (Malacosoma dis stria Hiibner) infested water tupelo ponds in Alabama in March and April, 1975. Data were collected to determine the effectiveness of these insecticides in preventing defoliation on large scale plots, and to determine their impact on selected nontarget organisms in a swamp situation. Aerial application of trichlorfon provided rapid and nearly complete collapse of the forest tent caterpillar population in a 900-acre (364 ha) pond. Timing and application parameters were near optimum for this treatment. Treatment efficacy was evident from heavy larval mortality, cessation of defoliation, and an increase in canopy foliage which was measurable within a week following application. Foliage loss in the untreated control block reached nearly 95 percent in this same period. Population reduction was sufficient to prevent occurrence of damaging populations in 1976. B. thuringiensis provided excellent kill when applied against late instar larvae. Subacute levels of trichlorfon residues were detected in tissue analyses of birds, snakes, mammals, and snails 3 and 26 days after treatments.
Weed Technology, Dec 1, 1992
Several application modes and methods (schemes) of using herbicides are available to control unde... more Several application modes and methods (schemes) of using herbicides are available to control undesirable vegetation on electric transmission line rights-of-way (ROW). Preferential use of a management scheme can be based on its cost effectiveness, i.e., degree of vegetation control and treatment cost. A treatment that increases/maintains desirable plants, decreases/maintains undesirable plants, and has relatively low cost, can be considered cost effective. Three common herbicides, 2,4-D, picloram and triclopyr, were applied in the field to test treatment mode (selective and nonselective) and method (cut stump, basal, and stem-foliar) effects on cost effectiveness during initial clearing and first and second conversion cycles on one electric transmission line ROW in Upstate New York. Clear or selective cutting with no herbicide was most cost effective during initial clearing. Nonselective and selective stem-foliar schemes were most cost effective during the first and second conversion cycles, respectively.
Aspects of applied biology, 2011
Summary Yield is an important factor in determining the economic feasibility of willow biomass cr... more Summary Yield is an important factor in determining the economic feasibility of willow biomass crops. Over the past 18 years a series of yield trials have been established across North America with older clones from the Ontario Ministry of Natural Resources and the University of Toronto and new genotypes from the SUNY-ESF breeding programme. One trial that has been harvested four times showed that the yield of four commercial clones increased by 23.0% from the first to second rotation and by 30.8% from the first to fourth rotation. Quantifying these changes is important when modeling production and cash flow of these perennial systems. Across all yield trials, those with new willow clones have produced 38% more biomass than trials with the older clones. The top three new clones in each of the nine trials that have been harvested produced a mean yield of 11.5 odt ha -1 yr -1 , which was 13.9% better than the three older reference clones in these trials.
Annals of The Entomological Society of America, Sep 15, 1967
ABSTRACT The mycangia of Trypodendron betulae Swaine and T. retusum (LeConte) are described and c... more ABSTRACT The mycangia of Trypodendron betulae Swaine and T. retusum (LeConte) are described and characterized with microphotographs. The mycangia are the prothoracicpleural type and are similar to the mycangia of other species of Trypodendron. It was hypothesized that the secretions into the mycangium contribute to the “ambrosia cell growth form in the symbiontic fungi.
... SE Area, State and Private Forestry, USDA Forest Service, Atlanta, GA. Peters, JF, AR Van Ros... more ... SE Area, State and Private Forestry, USDA Forest Service, Atlanta, GA. Peters, JF, AR Van Rossen, KAH Heremans and L. Dolcombe. 1975. ... 1980. Western forest nursery herbicides study, Rocky Mountain-Great Basin segment. In: Abstracts-1980 meeting Weed Sci. Soc. ...
... Additional keywords: Malacosoma diss-tria, Bacillus thuringiensis, Entomoph-thora megasperma,... more ... Additional keywords: Malacosoma diss-tria, Bacillus thuringiensis, Entomoph-thora megasperma, polyhedrosis virus, tri-chlorfon, swamp forest. ... Rivers in southwestern Alabama have been repeatedly defoliated by forest tent caterpillars (Malacosoma disstria Hubner) over the ...
Annals of The Entomological Society of America, Jan 15, 1970
ABSTRACT The mycangia of Trypodendron betulae Swaine and T. retusum (LeConte) are described and c... more ABSTRACT The mycangia of Trypodendron betulae Swaine and T. retusum (LeConte) are described and characterized with microphotographs. The mycangia are the prothoracicpleural type and are similar to the mycangia of other species of Trypodendron. It was hypothesized that the secretions into the mycangium contribute to the “ambrosia cell growth form in the symbiontic fungi.
Forestry sciences, 1984
The twig-infesting scolytid beetles Pityophthorous pulicarius and P. puberulus were exonerated fr... more The twig-infesting scolytid beetles Pityophthorous pulicarius and P. puberulus were exonerated from the role of suspected vectors of Scleroderris canker but a significantly reduced rate of infections in red pines treated with the systemic insecticide carbofuran (FuradanR) indicated that insects may nonetheless exacerbate the disease outbreak by providing infection courts for windborn and rain-splashed conidia.
Journal of Economic Entomology, Feb 1, 1977
... C. MORRIS,3and NA OVERGAARD' Southern FOI'estExperiment Station, Forest Service, US D... more ... C. MORRIS,3and NA OVERGAARD' Southern FOI'estExperiment Station, Forest Service, US Department of Agriculture ABSTRACT In 3 studies to control the ... Data were analyzed by analyses of variance and Duncan's new multiple range test (0.05 level of significance). ...
Decisions early in the design and installation process have a long term effect Select the plant... more Decisions early in the design and installation process have a long term effect Select the plants most suited for the site conditions and goal of the living snow fence Proper site preparation is essential and will provide benefits for years in the future Weeds are the largest challenge but can be managed using a variety of techniques © The Research Foundation of SUNY Questions and Discussion "We cannot keep it from snowing, but we can influence the wind that carries tons of blowing and drifting snow"-Gullickson et al. 1999.