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Showing 1 to 20 of 46 for “"flue-cured tobacco"”.
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Flue-cured tobacco: alternative management systems
The United States share of the exported flue-cured tobacco market has decreased over the last decade as other countries have increased production of improved quality tobacco. Such tobacco is available at a substantially lower price than U. S. tobacco and thus desirable for the manufacture of less …
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Strip-till flue-cured tobacco production in Virginia
Flue-cured tobacco (Nicotiana tabacum L.) is an intensively cultivated crop that typically receives four to eight primary tillage passes before being transplanted on a raised row-ridge. Strip-tillage, a conservation tillage system that only requires tilling a small strip before transplanting, has …
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Studies of Low-Nicotine Flue-Cured Tobacco Production
Flue-cured tobacco (Nicotiana tabacum) has been managed to optimize the yield of high-quality cured leaf while maintaining nicotine levels within a relatively narrow range based on the Regional Minimum Standards Program. Among the 3,000 plus alkaloids found in tobacco, nicotine accounts for greater …
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Quarterly import demand for North American flue-cured tobacco
Decreases in the North American market share of flue-cured tobacco exports indicates that producers on this continent have entered into an era of competition from foreign flue-cured tobacco exporters. In order to understand this problem and obtain additional information on the factors influencing …
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Characterizing resistance in flue-cured tobacco to Globodera tabacum solanacearum
Resistance to Globodera tabacum solanacearum in flue-cured tobacco was characterized in vitro, in the greenhouse, and field. The objectives of this study included evaluation of hatching of G. t. solanacearum as stimulated by root exudate, penetration and development of G. t. solanacearum on roots, …
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Responses of flue-cured tobacco to harvesting and curing variables
Two flue-cured tobacco varieties (Nicotiana tabacum L.) and eight harvesting and curing methods were simultaneously evaluated. Harvesting variables involved the removal of different leaf numbers on different schedules. Curing methods included single or separate barn conventional curing and a bulk …
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Influence of ethephon on growth and flowering of flue-cured tobacco
Tobacco (<i>Nicotiana tabacum</i> L.) leaf initiation stops when floral induction is completed. Floral induction (an internal biochemical change which signals development of flowers) can occur prematurely, during the pre- and/or post-transplant environment. Plants which flower prematurely have few …
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Evaluating the potential of aerial remote sensing in flue-cured tobacco
Flue-cured tobacco (Nicotiana tabacum L.) is a high value-per-acre crop that is intensively managed to optimize the yield of high quality cured leaf. Aerial remote sensing, specifically unmanned aerial vehicles (UAVs), present flue-cured tobacco producers and researchers with a potential tool for …
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Evaluating the use of renewable fuel sources to heat flue-cured tobacco barns
The curing of flue-cured tobacco (Nicotiana tabacum L.) is an energy intensive process and represents a significant portion of the overall cost of production. Given the goal of the industry to reduce the environmental footprint of tobacco production and the energy demand of curing, attention has …
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Intraspecific Variability within Globodera tabacum solanacearum and Selection for Virulence Against Flue-Cured Tobacco
The tobacco cyst nematode (TCN), Globodera tabacum solanacearum [(Miller and Gray, 1972) Behrens 1975] Stone 1983, is one of the most economically important pests of flue-cured tobacco (Nicotiana tabacum L.) in Virginia. Although TCN has been reported from other countries, the geographical …
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Capitalization of benefits of the flue-cured tobacco price support program into farm land values
Research has shown that acreage restrictions in flue-cured tobacco production have resulted in the capitalization of a portion of the future benefits of the price-support program into land values. Higher net income for farmers, the primary objective of the program, is therefore defeated through …
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Impact of Conservation Tillage on Soil Erosion and the Agronomic Performance of Flue-Cured Tobacco
Conservation tillage tobacco production has gained little producer acceptance since introduction in the late 1960's. Yield reductions, tobacco quality issues, unacceptable weed control, and inadequate planting equipment limited practice adoption and substantiated the need for continued research. …
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Quantification of tobacco aphid, Myzus nicotianae Blackman, injury to flue-cured tobacco, Nicotiana tabacum (L.)
… study was conducted to measure the impact of tobacco aphid, Myzus nicotianae Blackman, colonization and cumulative aphid-days on flue-cured tobacco, Nicotiana tabacum (L.). The objectives of the study included quantifying the response of tobacco production variables, cured leaf quality, and …
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Effect of predators on population dynamics of green peach aphid on flue-cured tobacco in Virginia
… (GPA), Myzus persicae (Sulzer), populations on flue-cured tobacco were evaluated in 1985 and 1986. The most common GPA predators found on tobacco were convergent lady beetle (CLB) (Hippodamia convergens), syrphid flies, Geocoris spp., Jalysus wackhimi, Nabis spp., Chrysopa spp., Micromus sp., …
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Quantitative analysis of individual flue-cured tobacco seed tissues reveals Tobacco mosaic virus infection in embryos
Tobacco mosaic virus (TMV) is an extensively studied RNA virus that reduces quality and yield in commercially grown tobacco (Nicotiana tabacum L.). The virus is transmitted mechanically, although infections have been associated with contaminated seeds with the seed coat being the source of virus. …
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A study of various curing systems for flue-cured tobacco and their effects on various quality factors
… in order to compare the effects on quality of tobacco of four curing systems, namely: wood, oil burner, coal stoker, and conditioned air. The items investigated included color, aroma, loss of weight, government grade, market value, and chemical properties. The results were analyzed …
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Influence of cultivar, topping height, and harvest treatment on physical and chemical characteristics of flue-cured tobacco
There has been an increased interest among the tobacco industry in the production of tip leaves in flue-cured tobacco. Different harvest treatments of flue-cured tobacco were compared across six cultivars and two topping heights with the objective of identifying tip grade tobacco. Agronomic and …
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