80 research outputs found
Fruit crops, 1980: a summary of research
No full textPerformance of selected apple cultivars on semi-standard rootstocks in southern Ohio / David C. Ferree, Donald A. Chandler, and John C. Schmid -- Influence of summer pruning and alar on growth, flowering, and fruit set of Jerseymac apple trees / D. C. Ferree and E. J. Stang -- Influence of promalin on Delicious in Ohio / D. C. Ferree, E. J. Stang and R. C. Funt -- The effects of overtree misting for bloom delay on soil water status, net photosynthesis, transpiration, and carbohydrate levels of apple trees / R. M. Crassweller and D. C. Ferree -- Effect of orchard heaters on vertical temperature profiles / R. D. Fox, R. D. Brazee, and D. C. Ferree -- The effect of orchard heaters on air movement and temperature / R. D. Fox, R. D. Brazee, and D. C. Ferree -- Organotins and mite control on apples in Ohio / Franklin R. Hall -- Model of the air sprayer / R. D. Fox, R. D. Brazee, D. L. Reichard and F. R. Hall -- Effects of application equipment variables on spray deposition by orchard air sprayers / D. L. Reichard, F. R. Hall and H. R. Krueger -- Fungi associated with moldy-core of apple and their location within fruit / Michael A. Ellis -- Nutrient content of twelve french and american hybrid grape cultivars grown under a wide range of soil conditions / Garth A. Cahoo
Fruit crops 1990: a summary of research
No full textOrchard temperature profiles in spring frost conditions / R. D. Brazee, R. D. Fox and D. C. Ferree -- Orchard sprayers: how much spray moves out of the orchard? / R. D. Fox, D. L. Reichard, R. D. Brazee, and F. R. Hall -- Influence of pruning treatments on mature spur-bound 'Starkrimson Delicious' apple trees / D. C. Ferree, J. C. Schmid, J. R. Schupp and I. J. Warrington -- The winter of 1983-84: a test winter for Ohio's fruit crops / C. K. Chandler and D. C. Ferree -- Performance of apple roostock, cultivars and cultural treatments under the stress of the 1988 drought / D. C. Ferree and J. C. Schmid -- Performance of a spur and standard Delicious strain in a slender spindle system / D. C. Ferree and J. C. Schmid -- Survey of Ohio strawberry growers: present practice and future directions / J. C. Scheerens and G. L. Brenneman -- Orchard crop loss assessments: a precondition for improved crop protection decisions / F. R. Hall -- Evaluation of compounds for control of foliar grape phylloxera, Daktulosphaira vitifoliae (Fitch) in Ohio / M. J. McLeod and R. N. Williams -- Marketing Ohio Strawberries / W. T. Rhodus and R. C. Fun
Fruit crops 1994: a summary of research
No full textEffects of nitrogen fertilization on total yield, different yield components, and foliar levels of 'Heritage' raspberry / D. R. Baral, G. A. Cahoon -- Influence of training stakes and various pruning and bending techniques on early performance of 'Fuji' apple trees / D. C. Ferree, J. C. Schmid -- Pilot project for integrated pest management in Ohio apple orchards / C. Welty -- Relationship of canopy micro-climate and apple tree fruit and leaf performance / D. Ferree, J. Tew, D. Miller, R. Brazee, R. Fox -- Effect of root pruning on shoot tip ethylene production and xylem concentrations of cytokinln and 1-aminocyclopropane-1-carboxylic acid in young apple trees / J. R. Schupp, D. C. Ferree -- Rootstock effects on spur characteristics, spur leaf nitrogen content and early production of apple trees / M. Rottgerman, D. Ferree, J. Schmid -- Inhibition of growth of crown-gall-causing bacteria (Agrobacterium tumefaciens) by polyamine synthesis inhibitors / T. Ponappa, A. R. Miller -- Relationships among apple weight, seed number, seed weight, germination date and apple seedling vigor / D. D. Miller, K. Kaiser -- Evaluation of organic and conventional fungicide programs for control of apple scab in Ohio / M. A. Ellis, L. V. Madden, L. L. Wilson, D. C. Ferree -- Evaluation of commercially available serological test kits for diagnosis of apple crown and root rot caused by Phytophthora spp in Ohio / M. A. Ellis, S. A. Miller -- A survey of the pest management practices, information sources, needs, and decision making criteria of Ohio apple growers / F. A. Hale, F. R. Hall -- Effects of cultural systems on the horticultural performance and fruit quality of strawberries / J. C. Scheerens, G. L. Brenneman -- Performance of new or uncommon strawberry cultivars grown under Ohio cultural conditions / G. L. Brenneman, J. C. Scheerens -- A comparison of spray drift deposited on ground and airborne spray collectors and on soybean plants / R. D. Fox, S. M. Hussein, D. L. Reichard, R. D. Brazee, F. R. Hall -- Experimental vs. computer-predicted air velocities for a cross-flow sprayer / R. D. Fox, R. D. Brazee, S. A. Svensson, D. L. Reichar
Fruit crops, 1986: a summary of research
No full textInfluence of treatments at planting on trellised apple tree performance / David C. Ferree -- Influence of growth regulators on branching of young apple trees / David C. Ferree and John C. Schmid -- Influence of growth regulators on scarf skin of Rome Beauty apples / David C. Ferree and John C. Schmid -- Influence of fungicides on scarf skin on Gallia Beauty / David C. Ferree and Michael A. Ellis -- Little relationship between root pruning and winter injury / James R. Schupp and David C. Ferree -- Performance of two apple cultivars on MS and M9 interstems on Antonovka / D. C. Ferree, R. M. McConnell, and J. C. Schmid -- Air sprayer jet deflection by travel or wind: as predicted by computer / R. D. Fox, R. D. Brazee, and D. L. Reichard -- Measuring atmospheric water vapor / R. D. Brazee and R. D. Fox -- A prototypic pollination unit made from expanded polystyrene / James E. Tew and Dewey M. Caron -- Effects of gibberellic acid (GA3) and daminozide (Alar) on growth and fruiting of Himrod grapes / G. A. Cahoon, M. L. Kaps, and S. P. Pathak -- Development of an action threshold for meadow spittlebug on strawberries / Mark A. Zajac and Franklin R. Hall -- Long-term yield of selected blackberry cultivars and selections in southern Ohio / Craig K. Chandler, Donald A. Chandler, and Greg L. Brenneman -- Electronic information transfer / R. C. Funt. -- A summary of research on synthetic pyrethroids and mites in the apple orchard ecosystem / Franklin R. Hall -- Controlling apple collar rot: effects of fungicides, soil amendments, and depth of planting / M. A. Ellis, D. C. Ferree, and L. V. Madden -- Validation of an electronic unit for predicting apple scab infection periods / M. A. Ellis, L. V. Madden, and L. L. Wilson -- Epidemiology and control of strawberry leather rot / G. G. Grove, M. A. Ellis, and L. V. Madden -- Research on cane diseases of thornless blackberry in Ohio / M. A. Ellis, G. A. Kuter, and L. L. Wilso
Fruit crops, 1978: a summary of research
No full textPlanting distances vs. yields and amounts of pruning time of peach trees / F. O. Hartman and R. G. Hill, Jr. -- Influence of heading height of newly planted trees on apple tree growth / David C. Ferree -- Problems of nitrogen nutrition of mature apple trees on M 9 rootstock / D. C. Ferree and G. A. Cahoon -- Effects of postbloom SADH, urea, dormant zinc, and zinc-containing fungicides on fruit set and foliar nutrient content in 'Delicious' apple / E. J. Stang, D. C. Ferree, and G. A. Cahoon – Economic appraisal of insect and disease injury to Ohio peaches and potential pesticide use strategies / Franklin R. Hall -- Effects of air volume rate and travel speed on air velocities delivered by orchard air sprayers / R. D. Brazee, R. D. Fox, D. L. Reichard, and F. R. Hall -- Spray droplet sizes delivered by orchard air sprayers / D. L. Reichard, H. J. Retzer, and F. R. Hall -- The effects of European red mite feeding on the growth and yield of spur-type Delicious apple / W. G. Klopfenstein and R. P. Holdsworth -- Insecticide tests against rose chafer adults in northern Ohio / Roger N. Williams -- Apple powdery mildew eradication and bloom delay with dormant season surfactant sprays / Robert A. Spott
CFD simulation of moving spray shields
No full textMost wind tunnel experiments pertaining to shielded spraying have been conducted under stationary conditions. In field experiments, the interest has always focused on the investigation of drift amount. No information about the effect of a moving shield is available, not to mention the effect of travel speed and travel direction on drift reduction. In this study, by using the FLUENT computational fluid dynamics software pack-age, a double foil shield was used to investigate the effect of a moving shield on drift reduction under different travel speeds and travel directions (upwind and downwind). Related information on conventional spraying without shields was included. In addition, the moving effect of mechanical and pneumatic shields in a three-dimensional flow with only one droplet release nozzle was further compared. Results of this study indicated that local relative velocity plays an important role in controlling the drift potential of a moving sprayer: the higher the local relative velocity the greater the drift potential. When the sprayer moves upwind, drift potential increases slightly with increased travel speed. However when the sprayer moves downwind, drift potential decreases inversely with increased travel speed, as long as travel speed is less than wind velocity. For the double foil shield, moving upwind produced less drift potential than moving downwind. Simulation results of comparing three-dimensional shields showed that the double foil shield provided a drift reduction of 60.6% and 29.3% over conventional spraying when traveling upwind and downwind, respectively, at a speed of 1.34 m s(-1). The moving pneumatic shield with the best operating setting provided excellent control of drift reduction for both upwind and downwind traveling at a speed of 1.34 m s(-1)
Fruit crops, 1982: a summary of research
No full textInfluence of six rootstocks and herbicides on growth, cropping, and fruit quality of Blaxtayman apple trees / David C. Ferree and Robert G. Hill, Jr. -- Tree performance and yield efficiency of several apple cultivars on M9 and M9 interstems / D. C. Ferree -- Chemical induction of lateral shoots on young apple trees / S. C. Myers and D. C. Ferree -- The influence of urea sprays, mulch, and pruning on apple tree decline / G. A. Cahoon and C. W. Donoho, Jr. -- Influence of fireblight and ambrosia beetle on several apple cultivars on M9 and M9 interstems / F. R. Hall, M. A. Ellis, and D. C. Ferree -- A model study of the effect of wind on air sprayer jets / R. D. Fox, D. L. Reichard, and R. D. Brazee -- A comparative study of selected vineyard training and pruning systems for 'Concord' grapevines / G. A. Cahoon -- Effects of selected soil applied herbicides on grapes / Jomo MacDermot and Garth A. Cahoon -- Evaluation of aromatic compounds and virgin females as attractants for rose chafer / Roger N. Williams, Terrence P. McGovern, and Michael Klein -- Botrytis cinerea "gray mold" isolates from strawberry resistant to benlate in Ohio / P. Tanboon-Ek and M. A. Elli
Ornamental plants: annual reports and research reviews, 2002
No full textOhio State University Extension Nursery, Landscape, and Turf Team directory: 2003 / Jack Kerrigan -- Floriculture Industry Roundtable of Ohio: 2003 / Charles Behnke -- Ohio State University Extension 2002 Buckeye Yard and Garden Line evaluation survey / Amy K. Stone and James A. Chatfield -- Weather, environmental, and cultural problems of ornamental plants in Ohio: 2002 / Pamela J. Bennett -- Infectious disease problems of ornamental plants in Ohio: 2002 / James A. Chatfield, Nancy A. Taylor, Erik A. Draper, and Joseph F. Boggs -- A biological calendar for predicting pest activity: six years of plant and insect phenology in Secrest Arboretum / Daniel A. Herms -- Biological suppression of foliar diseases of ornamental plants with composted manures, biosolids, and Trichoderma hamatum 382 / Harry A. J. Hoitink, Carol A. Musselman, Terry L. Moore, Leona E. Horst, Charles R. Krause, Randy A. Zondag, and Hannah Mathers -- Growth and water use by four leguminous tree species in containers on a gravel surface or embedded in mulch / Michael Knee, Daniel K. Struve, Michael H. Bridgewater, and Joseph W. Phillips -- The effects of sprayer configuration on efficacy for the control of scab on crabapple / Charles R. Krause, Richard C. Derksen, Leona E. Horst, Randall Zondag, Ross D. Brazee, Michael G. Klein, and Michael E. Reding -- Update on honeylocust knot / Pierluigi Bonello, Maria Bellizzi, and Harry A. J. Hoitink -- Control of phytophthora and other major diseases of Ericaceous plants / Harry A. J. Hoitink, Steven T. Nameth, and James C. Locke -- Is your landscape mulch going up in smoke? / Larry G. Steward, T. Davis Sydnor, and Bert Bishop -- IR-4 ornamental trials conducted by USDA-ARS in Ohio: 2002 / Betsy A. Anderson, Michael E. Reding, Michael G. Klein, and Charles R. Krause -- Research on black vine weevil and white grubs in ornamental nurseries-in Ohio by USDA-ARS / Michael E. Reding, Michael G. Klein, Ross D. Brazee, and Charles R. Krause -- Herbaceous ornamental field trial results in Clark County, Ohio – 2002 / Pamela J. Bennett -- Results of annual trial gardens at the Cincinnati Zoo and Botanical Garden for 2002 / Dave Dyke -- Ohio State University Learning Garden annual cultivar trials / Monica M. Kmetz-Gonzalez and Claudio C. Pasian -- A collection of crabapple knowledge from Secrest Arboretum: 1993-2002 / Erik A. Draper, James A. Chatfield, and Kenneth D. Cochran -- Key results of the 2001 Ohio Green Industry Survey / Gary Y. Gao, John J. Smith, James A. Chatfield, Joseph F. Boggs, Erik A. Draper, and Hannah Mathers -- The USDA/Agricultural Research Service research weather network in Lake County, Ohio - 2002 update / R. D. Brazee, R. C. Derksen, C. R. Krause, K. A. Williams, D. Lohnes, M. G. Klein, M. Reding, R. Lyons, W. Hendricks, R. Zondag, R. D. Fox, and D. Herms -- The OSU Chadwick Arboretum Learning Gardens / Dr. Steven Still and Annette Duetz -- Choosing soil testing labs / Gary Y, Gao, Maurice E. Watson, Joseph F. Boggs, and James A. Chatfield -- Top horticultural references for a green industry professional's library / Gary Y. Gao and Pamela J. Bennett -- The maples of Secrest Arboretum / Gary W. Graham, James A. Chatfield, and Kenneth D. Cochran -- Deck the halls with boughs from Ollie! / Kenneth D. Cochran and James A. Chatfiel
A MATHEMATICAL MODEL FOR DEVELOPING ETHNO-BIOLOGICALLY DIVERSE TROPICAL FORESTS
No full textThis paper presents a dynamic optimal control model describing the benefits and costs associated with the development of tropical forests rich in plant and animal species and folk knowledge. The model is a framework to assess how various market and institutional incentives might influence both deforestation and the collection of "ethno-biological information."Resource /Energy Economics and Policy,
Operational Dynamics of Technology Diffusion: Evidence From Patenting Data
No full text"One of the most challenging issues in the recent literature on technological development has been related to the ""geography of innovation"" or ""spatial clustering of innovations"". The relationship between innovation and geography is a topic of growing interest in both economics and regional science. The main questions are the extent to which knowledge spillovers (knowledge externalities) are geographically localized and their impact on the innovative performance of regions. The main hypothesis is that knowledge spillovers are space dependent because spatial proximity is important in the transmission of knowledge and ideas. Our approach examines the issue of knowledge spillovers from an explicit spatial econometric perspective, yielding more precise insights into the range of spatial correlation between patents, R&D expenditure, and employment, across different geographical areas. The proposed study represents the first attempt in the literature to provide a systematic analysis of the relationship between knowledge spillovers and elasticity of labor in the European Union (EU-14 countries) at the lowest possible level of spatial aggregation. We do so by analyzing R&D expenditures made by firms and universities, number of patents, and employment in 14 countries (EU-2002) at NUTS 2 (Nomenclature Units Territory Statistics) level."Made available in DSpace on 2015-09-25T20:55:37Z (GMT). No. of bitstreams: 2
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Previous issue date: 2004Embargo set by: Seth Robbins for item 84251
Lift date: Forever
Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDsRestricted to the U of I community idenfinitely during batch ingest of legacy ETDsU of I Only147 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2004
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