Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 62 for “"nitrogen use efficiency"”.
-
Biomass yield potential and nitrogen use efficiency of the photoperiod-sensitive energy sorghum
… be dedicated lignocellulosic biofuel feedstocks. Nitrogen (N), the key nutrient for plant growth and development, is the primary input and cost for an energy sorghum production system. In order to maximize the biomass yield with reasonable N inputs, it is essential to optimize management practices …
-
Agronomic and marker-assisted breeding strategies for improving nitrogen use efficiency in maize
Nitrogen (N) is an essential mineral nutrient required for maize (Zea mays L.) development. Increased maize yields will be necessary as the world demand for food increases. However, with the growing concern for food security, maize yield increases must be obtained using more sustainable …
-
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 …
-
Strategic applications of nitrogen fertiliser to increase the yield and nitrogen use efficiency of wheat.
In southern Australia a large proportion of crop nitrogen requirements are usually applied early in the season, either just before or at sowing, or during the first 6-8 weeks after sowing. However, the time of greatest demand for nitrogen by wheat crops is during the stem-elongation phase when the …
-
Physiological Traits and Quantitative Trait Loci Associated with Nitrogen Use Efficiency in Soft Red Winter Wheat
… more efficient uptake and utilization of applied nitrogen (N) has the potential to increase grower profitability and reduce negative environmental consequences associated with N lost from the plant-soil system. The first study sought to evaluate genotypic variation for N use efficiency (NUE) and …
-
Physiological, Metabolic, and Transcriptional Analysis of Submergence Tolerance in Rice and Nitrogen Use Efficiency in Wheat
… that rice plants promote rapid carbohydrate and nitrogen remobilization and transport in mature leaves, supporting quick elongation growth of growing leaves. In the presence of SUB1A, these metabolic processes were suppressed in mature leaves, resulting in the avoidance of energy starvation in …
-
Genetic Analysis of Nitrogen Use Efficiency and Related Traits in the IBMRIL X IHP1 Population of Maize
Nitrogen (N) is often the limiting factor in the production of maize grain and most maize hybrids exhibit a strong response to supplemental N in the form of increased grain yield. Despite the economical and environmental importance of the N-response of maize, little is known about the specific …
-
Winter Barley as a Commodity Cover Crop in the Mid-Atlantic Coastal Plain and Evaluation of Soft Red Winter Wheat Nitrogen Use Efficiency by Genotype, and its Prediction of Nitrogen Use Efficiency through Canopy Spectral Reflectance in the Eastern US
… was similar due to decreased fertilizer input. Nitrogen use efficiency (NUE) of soft red winter wheat (SRWW) can be improved by characterizing genotypes for NUE using canopy spectral reflectance [(CSR), a cheap, rapid and non-destructive remote sensing tool]. The other objectives of this study …
-
Influence of nitrogen rate on corn grain yield, nitrogen use efficiency, and nitrate leaching on coarse-textured Minnesota soils
Nitrogen (N) is often the limiting nutrient in irrigated sandy soils. Nitrogen poses a threat to water quality in its nitrate form because it is easily leached through the root zone of the corn (Zea Mays L.) crop following rain and irrigation events. Leaching is enhanced in sandy soil conditions …
-
On-farm evaluation of nitrogen use efficiency and nutrient balances at the intra-field scale in north-central Illinois
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-08-01
-
Influence of nitrogen fertilization and leaf management on nitrogen use efficiency and agronomic performance of mammoth cultivars of flue-cured tobacco
… Virginia to determine the influence of nitrogen rate on nitrogen use efficiency and its components on two mammoth cultivars and a conventional cultivar. Experiments were also conducted to determine the effects of leaf number, time of topping, and nitrogen rate on yield, quality, and …
-
The Effect of Split Nitrogen Fertilization on Yield, Quality, and Nitrogen Use Efficiency of Spring Barley Grown on Two Different Soil Types in Iceland
Split nitrogen (N) fertilization is a strategy aimed at maximizing nitrogen use efficiency (NUE) by applying N at specific growth stages when plant utilization is greatest, thereby minimizing environmental impacts from runoff and greenhouse gas emissions. Icelandic studies on split fertilization in …
-
Water Requirements, Use Efficiency, and Insect Infestation in Brussels Sprouts, and Nitrogen Use Efficiency in Sweet Basil under Low Tunnels compared to Open-field Production
… tunnels (LTs), and their relationship with water use efficiency, nitrogen use efficiency, and the level of protection against insect injury. Low tunnels increased yield, number of sprouts, and water use efficiency of Brussels sprout production. In addition, LTs decreased irrigation requirements, …
-
Studies of Low-Nicotine Flue-Cured Tobacco Production
… leaf quality and (2) quantify differences in nitrogen-use efficiency between conventional and low-nicotine flue-cured tobacco varieties. Results showed that the changes to production practices did not sufficiently lower nicotine levels to the range proposed by the FDA. The only publicly …
-
Exploration of Physiological and Molecular Responses to Precipitation Extremes in Soybean and Nitrogen Fertility in Wheat
… human consumption, animal feed, and industrial use. However, increasing global population and worsening climate change have put a major strain on the production system of these crops. Natural disasters such as flooding and drought can severely impact growth and productivity of these crops. In …
-
Water-use efficiency and productivity in native Canadian populations of Populus trichocarpa and Populus balsamifera
… production, carbon sequestration, and other uses linked to climate change are looking to tree physiologists to identify species and genotypes best-suited to their purposes. The ideal poplar genotype for use in Canadian programs would be drought-resistant, cold-climate adapted, and …
-
Response of maize to selected productivity traits and biological nitrogen fixation in cowpea-maize combinations under conservation farming system.
… performance of cowpea genotypes for Biological Nitrogen Fixation (BNF) in conservation farming system. (iii) identify maize – cowpea combinations that result in high water use efficiency (WUE) and nitrogen use efficiency (NUE) for high maize productivity under CF system. The trials were …
-
Nitrogen partitioning, content and efficiency in hybrid canola
… is produced in Saskatchewan every year. Farmers use nitrogen fertilizer supply so that canola crops reach their yield potential. Canola, like corn, is a crop that is know for high nitrogen fertilization requirements. A two year study was conducted at three locations across Saskatchewan with the …
-
Physiological and Molecular Dissection of Salinity Tolerance in Arabidopsis and Maize and Nitrogen Uptake in Wheat
… we compared two genotypes with contrasting nitrogen-use-efficiency (NUE), VA08MAS-369 and VA07W-415, to dissect physiological and molecular mechanisms underlying NUE regulation. Our agronomic data revealed that line 369 maintained yield and yield-related parameters and exhibited greater NUE …
-
Cost and timeliness of alternative nitrogen application methods
… modify their practices to maximize profits. With nitrogen being the single most important macronutrient for corn production in the Midwest, the timing of application has several implications both financially and environmentally. Regulation of fall-applied nitrogen is a timely issue to address. …
Page 1 of 4