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Showing 1 to 20 of 73 for “"nitrogen fertilization"”.
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An economic analysis of nitrogen fertilization regimes in Virginia
The loss of nitrogen from agricultural land to ground and surface waters is currently a major concern in the Commonwealth of Virginia. Farmers use nutrients on plants to maximize profit from the selling of a crop. For them losses of nutrients through inappropriate nutrient application are …
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Nitrogen fertilization, nitrogen and nicotine content of burley tobacco
… to study the effect of rates and time of nitrogen application on growth, nitrogen and nicotine contents of leaves and stalks of Burley 21. Rates of nitrogen used were 0, 75, 150 and 225 pounds per acre. Nitrogen was applied as preplant and/or as post plant applications. The maximum rate of …
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Potato growth and productivity under different biological nitrogen fertilization strategies
… em DBC com quatro repetições. O estado nitrogenado da batata foi avaliado pelo índice SPAD e teor de N-total após a aplicação de EC. A produção de matéria seca, a eficiência de recuperação de N e a sua distribuição entre folhagens e tubérculos foram quantificados antes da senescência. …
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Nitrogen Fertilization of Hybrid Hazelnuts in the Upper Midwest of the USA
… alternative crop for the Upper Midwest. Current nitrogen (N) recommendations for European hazelnut production are based on research from Oregon and may not be applicable to hybrids in Minnesota due to differing soils, climate, genetics, and growing systems. In 2003, I initiated three years of N …
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Optimizing nitrogen fertilization practices under intensive vineyard cover cropping floor management systems
… resulted in increased competition for soil nitrogen, leading to decreased vine nitrogen status and berry yeast assimilable nitrogen (YAN). The aim of this study was to determine the effects of different nitrogen fertilization methods applied at varying doses and different times, on vine and …
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Some physiological responses of two grasses as influenced by temperature, light, and nitrogen fertilization
… conducted to study the effects or temperature, nitrogen, and light intensity on the growth and physiological effects on Tifgreen bermudagrass, Cynodon dactylon (L) Pers., and Cohansey bentgrass, Agrostis palustris Huds. Each of the grasses was included in a field experiment to study the …
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Time And Rate Of Nitrogen Fertilization Influence Maize Nitrogen Use Efficiency And Soil Enzyme Activity
… and spring) and split applications of differing nitrogen (N) rates for maize (Zea mays L.) on an irrigated Hubbard-Mosford loamy sand complex at Becker, a non-irrigated Normania loam soil at Lamberton, and a non-irrigated Nicollet clay loam soil at Waseca, MN. Fall and spring treatments were …
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EFFECTS OF NITROGEN DEPOSITION ON BOREAL BOGS: A THREE YEAR NITROGEN FERTILIZATION AND TRACER EXPERIMENT
… cycling. Oligotrophic bogs are naturally nitrogen (N) limited, receiving nutrients only via atmospheric deposition. Increased nutrient deposition, particularly N will almost certainly change the microbiology, biogeochemistry, and C and nutrient balances in bogs. Both primary production and …
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Soil nitrogen pools, forms, and losses in mature miscanthus x giganteus under nitrogen fertilization treatments
… x giganteus have shown little effect of nitrogen (N) fertilizer on yield production but have shown increased nitrate leaching and nitrous oxide (N2O) emissions. The effect of this crop on soil organic matter, mineralization of N, and available carbon has not been fully determined, …
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Yield response to nitrogen fertilization and harvest timing on a mature Miscanthus x giganteus stand
… This research focuses on the effects of nitrogen fertilization rates and harvest timings on yields and quality of a four-year-old crop of M. x giganteus. Research plots in Champaign, IL were harvested at five dates from August through March 2009, 2010, and 2011, and received five rates of …
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The effect of nitrogen fertilization on protein content and bread baking properties of wheat flour
The effects of variation in nitrogen application during two growing seasons to Coker 916, a soft red winter wheat, on wheat grain and flour protein content and bread baking properties were examined. Nitrogen fertilization regimens tested included the single spring application of 168 kg/ha in growth …
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Measuring Root Growth Response to Nitrogen Fertilization Rates in Young Pecan Seedlings Using the Minirhizotron Method
… new and current growers to plant new orchards. Nitrogen (N) application is an important step in establishing a productive pecan orchard, but few studies have determined how N affects the establishment of pecan tree roots, specifically fine roots (0-2 mm) responsible for nutrient uptake. The …
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The Effects of Phosphorus and Nitrogen Fertilization on Tall Fescue Nutrient Content, Yield and Baleage Quality
… the nutrition of tall fescue, it is known that fertilization of phosphorus (P) can help improve leaf nutrient content of P, magnesium (Mg), and calcium (Ca). Additionally, nitrogen (N) fertilization is known to improve forage quality. The objective of this study was to examine the effects of …
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The influence of long-term nitrogen fertilization on symbiosis and metabolism in the legume-rhizobium mutualism
… impacts of global changes, such as increased nitrogen (N) deposition. Bacterial mutualists in particular might evolve quickly, thanks to short generation times and the potential for independent evolution of plasmids through recombination and/or horizontal gene transfer (HGT). In a previous …
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Soil microbial aspects of cover cropping as conservation practice for corn monocultures under heavy nitrogen fertilization
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Effect of nitrogen fertilization on the physiological damage and subsequent recovery of mite-infested apple leaves
… apple trees to evaluate the effect of nitrogen fertilization on the physiology of apple leaves subjected to European red mite feeding, and the subsequent recovery of leaf function following mite removal. Nitrogen (N) fertilization affected the visual damage, and the photosynthetic …
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Nitrogen fertilization, yield components, and species selection of perennial grass bioenergy cropping systems across eastern North America
… and responses of perennial energy crops to nitrogen fertilization. This dissertation examines several of these aspects in three studies: 1) An in-depth look at the effects of N fertility rates on biomass yield and individual yield components of Miscanthus across several seasons. Results …
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Quality and yield of tall fescue (Festuca arundinacea Schreb.) as affected by season, legume combinations and nitrogen fertilization
… quality. The effect of stockpiling date and N fertilization on yield, yield distribution, and chemical quality of fescue in winter were studied. The total digestible nutrient (TDN) content of tall fescue in summer was variable between years (35.3% in 1975 and 52.2% in 1976). Alfalfa (54.9% TDN) …
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