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 17 of 17 for “"micro-nutrients"”.
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Redox cycling of colloidal macro- and micro-nutrients in a monomictic lake
… as they play an essential role in the cycling of nutrients and carbon, with impacts at the local and global scale. This study selected Lake Ngapouri, a small monomictic lake in the Waikiti Valley, Taupo Volcanic Zone, New Zealand, which receives a considerable amount of nutrients and organic …
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Determination and assessment of procedures of the pour-through nutrient extraction procedure for bedding flats and plug trays
… Analysis of leachate EC, pH, and macro- and micro-nutrients indicated that the Pour- through method of nutrient extraction was sensitive and effective in extracting available nutrients. Leachate analysis was positively correlated to fertilizer nitrogen concentration, shoot tissue dry weight, …
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Evaluating Nitrogen Containing Controlled Release Fertilizers At Stand Establishment In Loblolly Pine
… 2) granular ammonium nitrate (10-10-10 + micro-nutrients) applied to the soil surface; 3) granular methylene urea (40-0-0) applied to the soil surface; 4) methylene urea (20-10-5) in tablet form applied in the planting hole; and 5) isobutylidenediurea (IBDU) (9-9-4) in tablet form applied …
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Ecological and Genetic Status of the Purple Pitcher Plant, <i>Sarracenia purpurea</i> L., in Maryland and Virginia
… (3.5–4.9) and were low in almost all macro- and micro-nutrients. Perturbed or polluted sites exhibited elevated levels of exchangeable cations magnesium, calcium, and sodium. Climatic data disclosed that southern Virginia purple pitcher plant sites are both warmer and wetter than those in …
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Effects of Land-Use History on Soil Macro- and Trace Elements in the Southern Piedmont of North America
… histories affect the rate and pattern of soil nutrients at regional and global scale. However, former studies have rarely focused on soil trace elements (B, Mn, Zn, Cu and Fe). In this study, we aimed at the long-term biogeochemical cycling pattern and spatial heterogeneity of soil trace …
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Influences on the oceanic biogeochemical cycling of the hybrid-type metals, cobalt, iron, and manganese
… iron, and manganese are redox active trace metal micro-nutrients with oceanic distributions that are influenced by both biological and abiotic sources and sinks. Their open ocean concentrations range from picomolar to nanomolar, and their bioavailabilities can impact primary production. …
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Diagnosis of Loblolly Pine (Pinus taeda L.) Nutrient Deficiencies by Foliar Methods
… of a large number of possibly limiting nutrients in individual stands. This study used single-tree fertilization with macro-nutrients (N, P, K, Ca, Mg, S) and micro-nutrients (Mn, Zn, B, Cu, Fe, Mo) to identify deficiencies using foliar techniques in one growing season. Four study sites …
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Irrigation and nitrogen management of soybean in highly productive soils
… nitrogen fertilizer, and foliar macro and micro-nutrients) with and without irrigation. Additionally, nine site-years from a combination of years (2014-2017) and locations (Brownstown, Chillicothe, Monmouth, and Urbana) examined the impact of N applied at different timings (planting, R1, …
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Determination of metal concentrations in vegetation, soil, dust, and water in the vicinity of a cement factory in North West province, South Africa
… meta ls are found in CKD and some of these are micro nutrients with potentially toxic effects. If these are present in large quantities, they pose a direct threat to vegetation, animals and humans. The aim o f this study was to quantify a selected number of trace metal concentrations in …
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Role of Public Procurement in Improving the Consumption of Millets
… resulted in the crowding out of traditional micronutrient-rich food crops. This study attempts to estimate the consumption-related impacts of extending public procurement to millets. In doing so, the broader objective is to support healthy diet diversification among the poor. As an empirical …
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Improving sulforaphane bioavailability from cooked broccoli
… is a nutritious food containing many macro- and micro-nutrients. Most consumers prefer cooked broccoli (CB); unfortunately, the enzyme myrosinase is inactivated by heat, resulting in the failure of glucoraphanin (GRP) hydrolysis to sulforaphane (SF), the potent anti-cancer compound in broccoli. …
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Nutrient composition of ensiled alfalfa and corn forages grown in Virginia
… were analyzed for fiber, N, and macro- and micro-nutrients. Chemical composition of the silages was correlated with S applied in fertilizer or manure. Data were compared with critical levels of mineral requirements of various classes of livestock. Alfalfa silage was higher (P < 0.05) in …
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Wood compost process engineering, properties and its impact on extreme soil characteristics
… vermicompost samples were used to examine its microstructure under scanning electron microscope which compared also with the same soil used in thermal analysis. The obtained results under all studied experiments can be arranged as follow: First compost trial, Cumulative amount of carbon dioxide …
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Terrestrial-Aquatic Linkages: Watershed (Geologic and Vegetation) Runoff Influences on Primary Production of a Sub Alpine Lake
… combustion and atmospheric deposition of nutrients, land development and associated erosion, agricultural fertilizers in runoff, and other non-point sources. Therefore, it is become increasingly important to understand nutrient transfer in natural systems, as this can inform effective …
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Nutrient intakes, compliance with recommendations and key sources in women of child-bearing age (18-50y) in Ireland
… estimate the mean daily intake of energy, macronutrients, dietary fibre and salt, to determine compliance with dietary guidelines and to identify the key dietary sources of these nutrients in WCBA. A further aim was to estimate the mean daily intake of micronutrients, the prevalence of …
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Salt stress responses in pear and quince: physiological and molecular aspects
… have been affected by salinity; same macro/micro nutrients were altered in some organs or relocated within the plant. This plant response could have partially contributed to face the salt stress. Leaves and roots have been harvested for molecular analyses at four different times during …