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 13 of 13 for “"Nitrogen response"”.
-
Nitrogen recommendation systems, weather effects on nitrogen response, and the prediction of nitrogen response in Illinois
ABSTRACT 1 Nitrogen rate determination by corn producers entails both environmental and economic risk. Over-application increases production costs and causes environmental damage, whereas under-application reduces food production and farm revenue. Several recommendation methodologies have been …
-
Hybrid and plant density effects on nitrogen response in corn
… corn (Zea mays) hybrids that may be improved for nitrogen use efficiency along with the emphasis on higher plant density for maximum yields of modern hybrids have raised questions about interactions between N rate and plant density for different hybrids. Four corn hybrids (Pioneer 33D49, 33K44, …
-
Optimizing yield and crop nitrogen response characterization by integrating spectral reflectance and agronomic properties in sugarcane and rice
Nitrogen (N) is one of the most important and limiting nutrients in crop production. The best management practices for N fertilization is always challenging due to its dynamic system in the nature. Remote sensing has emerged as one of the most useful technologies in modern agriculture for …
-
Analysis of the dynamic nitrogen response of root and shoot transcripts in arabidopsis thaliana to gain insights on long-distance nitrogen signaling interactions
… than 2% of global annual crop yield growth, with nitrogen (N) fertilizer use comprising the remaining 98% and its use expected to increase to 138Tg to meet crop demand by 2030. This overapplication of N fertilizer results in direct economic and environmental consequences as plants only take up …
-
The profitability of nitrogen fertiliser usage on Canterbury irrigated sheep farms
The profitability of nitrogen usage on Canterbury irrigated sheep farms was investigated using a deterministic feed budget model. Effects of nitrogen usage on stocking rate and animal performance was determined. Current prices were used to determine profitability using partial budget analysis. …
-
GEOTRICHUM GALACTOMYCETUM: INTRASPECIFIC PHYSIOLOGICAL DIVERSITY AND BIOTECHNOLOGICAL POTENTIAL OF SIX STRAINS ISOLATED FROM POULTRY MANURE
… activity related to the usage of carbon and nitrogen, response to osmotic and ionic stress, and activity of various enzymes exhibited on different media. Five morphotypes were found to be distinct and growth rates ranged from 0.31 to 2.18 mm/day with intraspecific divergency seen as 2.6. …
-
Developing machine learning tools to understand transcriptional regulation in plants
… with environmental stresses and reprogram gene responses which in turn confers stress tolerance. Recent advances of genomic technologies have led to the generation of much genomic data for the model plant, Arabidopsis. To understand gene responses activated by specific external stress signals, …
-
Discovery of novel regulators and genes in nitrogen utilization pathways in maize
Nitrogen (N) is a key limiting plant nutrient and its availability is expected to have significant impacts on the expression of genes that function in nitrogen metabolism and growth responses to N. Although a key target for improving maize yield response to nitrogen, relatively little is known …
-
Yield response of continuous corn to residue removal, tillage, and nitrogen rate
… may require adjustments in tillage systems and nitrogen rates. Research was conducted at DeKalb, Monmouth, Urbana, and Perry, Illinois to examine the response of three residue removal rates (full, partial, and none) and two tillage treatments (no-till and conventional (chisel) tillage) to four N …
-
Supercritical Fluid Chromatography with Chemiluminescent Nitrogen and Sulfur Detection
… detectors with SFC in the sensitive detection of nitrogen- and/or sulfur containing compounds. The chemiluminecent nitrogen detector (CLND), a gas-phase detector which is specific for nitrogen-containing compounds, was first evaluated as a detector for use with capillary SFC. The potential use of …
-
The higher productivity of the bioenergy feedstock Miscanthus x giganteus relative to Panicum virgatum is seen both into the long term and beyond Illinois
… cellulosic ethanol targets. 2) A split-plot nitrogen fertilization study (0, 67, 134, 202 kg N ha-1) performed over three to four years on mature stands of M. x giganteus and P. virgatum at seven locations in the U.S. Midwest, the first ever to directly compare the effect of nitrogen …
-
Genomic improvement of nitrogen utilization efficiency in maize
… application rates to boost yields. Consequently, nitrogen (N) use in the United States has increased nearly six fold in the last fifty years to more than 13 million tons applied in 2014, an increase that mirrors worldwide trends. The production of N fertilizer is dependent on energy inputs to …
-
Fine mapping and characterization of genes involved in maize nitrogen utilization efficiency
… comes from maize’s responsiveness to nitrogen fertilizers. Despite their importance in crop production, these fertilizers can place an economic burden on growers and can also have negative environmental and health impacts when applied in excess. In order to mitigate the negative …