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.
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Showing 1 to 20 of 30 for “"nutrient deficiency"”.
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Anatomical Developments and the Role of Carbohydrate or Mineral Nutrient Deficiency in Bud Necrosis of 'Riesling' grapevines (Vitis Vinifera L.)
… that BN was caused by essential substrate deficiency, localized carbohydrate deprivaton was attempted by shading of 'Riesling' grapevines and by shoot tip removal. In one experiment, 92% shade was applied for a three-week period at 20, 40, or 60 days after budbreak in one vineyard and at 40 …
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High Resolution Transcriptional Profiling and Characterization of Cellular Inclusions in Arabidopsis thaliana Roots Grown in Low Sulfur Conditions
… plant development and productivity. Sulfur deficiency is a key nutrient deficiency that adversely affects crop yield. The model plant Arabidopsis thaliana has played an informative role in deciphering the mechanisms involved in sulfur assimilation, as well as, the response to limited …
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Análise de áreas desertificadas nos Cariris Velhos - PB.
… soil due to deforestation; analysis showed soil nutrient deficiency, particularly phosphorus, potassium and organic matter, the application of the transect is shown that the vegetation sparse and with a small number of individuals.
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Nutrient limitation dynamics of a coastal Cape Cod pond : seasonal trends in alkaline phosphatase activity
… activity (APA) were utilized in tandem as nutrient deficiency indicators (NDIs) for phytoplankton. The study objective was to evaluate the limiting nutrient status of the pond throughout the growing season. The development of a high throughput method for fluorometrically measuring APA …
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Nutrient limitation dynamics of a coastal Cape Cod pond : seasonal trends in alkaline phosphatase activity
… activity (APA) were utilized in tandem as nutrient deficiency indicators (NDIs) for phytoplankton. The study objective was to evaluate the limiting nutrient status of the pond throughout the growing season. The development of a high throughput method for fluorometrically measuring APA …
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Novel methods for identification and quantification of iron fortificants in cereal flours
<p>Iron deficiency is the most common nutrient deficiency globally. Fortification of cereal grains is a main strategy used to ameliorate global iron deficiency due to its safety and efficacy. For fortification to be effective, fortification programs must use appropriate iron compounds at …
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Genetic Control of the Response to Sulfur, Nitrogen, and Phosphorus Supply in Arabidopsis thaliana
Sulfur deficiency is a relatively new problem in Europe and the studies on sulfur use efficiency are still lagging behind those on the other major nutrients such as nitrogen or phosphorus. Therefore, the main aim of this work was to improve the understanding of the sulfate assimilation pathway, its …
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An investigation of the influence of drought and other soil factors on the structure of a calcareous grassland.
… of drought with soil heterogeneity and mineral nutrient stress. Efforts have been made to differentiate between mechanisms of drought tolerance and drought avoidance, and this has allowed some assessment of the contribution of diversity in morphology, life history and physiology to the …
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Prenatal Undernutrition, Metyrapone, and the Cerebrovasculature
… changes associated with fetal stress and nutrient deficiency, with a focus on organ systems such as the kidney and heart. One key idea proposed by many of these studies is the glucocorticoid hypothesis, which suggests that fetal stress develops at least in part by fetal overexposure to …
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The Impact of Iron Deficiency on Plant-Oomycete Interactions
… Abiotic stresses, such as heat, drought, or nutrient deficiency must be overcome simultaneously with biotic threats such as pathogens and herbivores. Oomycete pathogens represent a significant threat to global food production and natural ecosystems. Novel modes of oomycete disease control …
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Determination of fertility rating (FR) in the 3-PG model for loblolly pine (Pinus taeda L.) plantations in the southeastern United States
… fertilization with N and P eliminate major nutrient deficiency in the southeastern US was tested and a relationship between baseline fertility rating and fertilizer response was developed. An inverse relationship was observed between fertilizer response and baseline FR.
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Controlling dark fermentation of agro-industrial waste for valued organic acids production
… reserves in the event of carbon excess and nutrient deficiency. Industrial production of PHA remains constrained by production costs up to five times higher than those of petroleum-derived plastics. In this framework, to reduce production costs, PHA can be produced starting from waste …
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Longitudinal effects of early-life iron status in pigs
Iron deficiency is reported as the most common nutrient deficiency worldwide. Due to rapid growth and low iron stores at birth, infants are at particular risk for developing iron deficiency. Further, iron deficiency is known to affect the developing microbiota. Thus, the aim of this study was to …
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Assessment of Sediment and Salinity in the Lower Mekong River Basin
… impacted by several environmental concerns like nutrient deficiency from sediment and saltwater intrusion. The decrease in sediment deposition in the Mekong basin is caused by a number of factors. In China, Lao PDR, and Vietnam, the hydropower generation from dams has improved people's overall …
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The influence of sowing depth, compaction and fertiliser placement on caucasian, subterranean and white clover grown in pots : A dissertation submitted in partial fulfilment of the requirements for the degree of Bachelor of Agricultural Science with Honours at Lincoln University, New Zealand
… may be due to another limiting factor, possibly nutrient deficiency. A fertiliser placement experiment was established to investigate the effect of fertiliser on root growth and development. A pot trial using a low fertility, sieved soil at the Lincoln University glasshouse facilities had three …
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Human milk oligosaccharide supplementation did not affect gut development in the healthy neonatal piglet
… underweight for their gestational age due to nutrient deficiency in the womb. They are at a higher risk for a variety of health issues later in life, which can be exacerbated if the infant is not breast-fed. Breast milk is superior to infant formula in multiple ways, one of the advantages …
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Hops Production in Virginia: Nutrition, Fungal Pathogens, and Cultivar Trials
… more bittering potential for beer brewers. In a nutrient deficiency study, hop plants were grown in hydroponic solutions, and deficiencies were induced for nitrogen (N), phosphorus (P), and potassium (K). After visual deficiency symptoms had been induced, leaf tissue samples were taken and …
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Assessment of carbon stock and selected soil fertility indicators in a bush encroached savanna at Erichsfelde farm, Namibia
… Mg, Cu and SAR. The difference in these major nutrients content indicated a soil nutrient deficiency due to the fact that savanna bushes have less biomass that returns low nutrients to the soil. It can be concluded that despite the known ecological importance of invader bushes, they do not …
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Cocoa yield, nutrients and shade trees in traditional cocoa agroforests in a climate change context: a case study in Bahia, Brazil
… I explore the role of shade trees and the nutrient dynamics in litterfall. Finally, I explore the risk that climate change could represent for cocoa production in the future by looking at the effects of an unexpected drought caused by an El Niño Southern Oscillation (ENSO) event between …
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Investigation of chicken embryo metabolism and substrate utilization during later development
… metabolism is enhanced to alleviate the relative nutrient deficiency. In Study Two, a gas chromatography-mass spectrometry-based metabolomic profiling approach was employed to investigate effects of hen age and egg size on embryo metabolism. Principal component analysis of liver and blood …
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