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 254 for “"fertilized"”.
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Environmental Influences on Gas Exchange in Fertilized and Non-Fertilized Stands of Loblolly Pine
… and seasonal scale was examined in 15-year-old fertilized and non-fertilized loblolly pine in the upper and lower thirds of crowns in stands located in the North Carolina sandhills. Photosynthesis rates between control and fertilized stands for both seasonal and diurnal measurement periods were …
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Surface Runoff Quality in Grasslands Fertilized with Broiler Litter
… tall fescue-bermudagrass plots that were fertilized with broiler litter during two years, and received only inorganic fertilizer N for the two subsequent years, were compared with EPIC estimates. EPIC simulations of runoff volume in individual events did not show bias in three of the plots …
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Nutrient Cycling in Microdose Fertilized West African Soils Under Indigenous Vegetable Production
Fertilizer microdosing is the application of a reduced fertilizer rate next to the seed within ten days of sowing. It is being promoted as a part of an Integrated Soil Fertility management (ISFM) technique in sub-Saharan Africa (SSA) that seek to grow indigenous vegetables economically and …
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Biosphere-atmosphere exchange of ammonia from a fertilized corn canopy in Central Illinois
Chemical fertilizer use is the primary source of anthropogenic atmospheric NH3 in Illinois. Atmospheric NH3 is a precursor to secondary particulate matter (PM) and it also contributes to eutrophication and soil acidification following wet or dry deposition. Uncertainty in NH3 emissions due to …
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The incidence of ectomycorrhizae by Pisolithus tinctorius on Quercus rubra seedlings fertilized with sodium nitrate and ammonium chloride
… in one-liter containers in a greenhouse and fertilized at the time of planting with a nutrient solution excluding nitrogen. Growing medium moisture was maintained between 0.3 and 1.0 bars matric suction throughout the growing periods. Details are given with regards to inoculum synthesis, seed …
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Management and nutritional quality of tall fescue and alfalfa grown in combination, compared to tall fescue fertilized with nitrogen
’Kentucky 31’ endophyte-free tall fescue fertilized with 160 kg N ha⁻¹yr⁻¹ was compared to similar fescue grown with ’Cimarron’ alfalfa in a randomized block pasture experiment with four replications. Quality and yield of stockpiled forages and performance and serum minerals of grazing steers were …
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Yield, chemical composition, digestibility and palatibility of orchardgrass (Dactylis glomerata L.) fertilized with different levels of nitrogen and sulphur
The effects of three fertilization rates of N (0, 112 and 224 kg/ha) as ammonium nitrate and S (0, 34, and 67 kg/ha) as calcium sulphate on yield, chemical composition, digestibility and palatability of orchardgrass (Dactylis glomerata L.) , were studied in a field experiment. Treatments were …
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Evaluation of quickstand bermudagrass fertilized with two rates of nitrogen and grazed by sheep at different stocking rates in a temperate environment
… trial 2. In both grazing trials, paddocks were fertilized with 114 (low N) or 340 (high N) kg N ha-1yr-1 in split applications.
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Nitrogen utilization in tall fescue (Festuca arundinacea Schreb.) pastures fertilized with nitrogen or grown with alfalfa (Medicago sativa L.) or red clover (Trifolium pratense L.)
… pollution. "Kentucky 3l" tall fescue fertilized with 160 kg N ha-1 yr-1 (split application) was compared to tall fescue grown with alfalfa or red clover in a 5-yr pasture experiment on a mixed Typic Hapludult. During yr 6, effects of N fertilization or the legume on soil N, forage N …
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Predicting Maize Yield, Nutrient Concentration and Uptake in P and K Fertilized Soils: Pressurized Hot Water and Other Alternatives to Mehlich I Extraction in Guatemala Soils
The inaccessibility and cost of soil testing reduce effectiveness of fertilizer use on small-scale subsistence farms, and inadequate funding promotes adoption of soil tests in developing countries with minimal validation. For example, Mehlich-I extraction of phosphorus (P) currently used …
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Methods of Measuring the Fertilizing Ability of Sperm
… of a concentration that results in 90% or more fertilized eggs. Several experiments were conducted to determine if differences could be more easily detected when some other percentage of eggs was fertilized. The percentage of eggs fertilized was altered by changing either the concentration of …
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The influence of salal on planted hemlock and cedar saplings on northern Vancouver Island
… and hemlock-fir) and 4 treatments (control, fertilized, scarified, and fertilized plus scarified). It is shown that increasing salal leaf area index reduces the growth of western hemlock more than western red cedar. When growing with western hemlock, it is inferred that salal is strongly …
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The Short-term Effects of Fertilization on Total Soil CO2 Efflux, Heterotrophic, and Autotrophic Respiration of Loblolly Pine (Pinus taeda L.)
… EC differed significantly (P<0.0001) between fertilized and unfertilized plots, but the direction was dependent on date. In the early period of the study, fertilized plot values were lower than control plots. However, by the latter periods fertilized plot values returned to control levels …
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Effects of Elevation and Nutrient Availability On the Primary Production of Spartina Alterniflora and the Stability of Southeastern Coastal Salt Marshes Relative to Sea Level Rise
… accretion for these systems. 3 year averages of fertilized sample production showed a significant increase in above and below ground biomass with respect to the control (P<0.0001). Elevation also had a significant influence on both the above and below ground production of the control samples …
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Effect of sulfur fertilization on yield and chemical composition of corn forage and utilization of corn silage by sheep
… at harddent stage (35% dry matter). Sulfur fertilized corn silages (N/ S=42 and 43) and non-S fertilized silage (N/ S=62) supplemented at two rates with sodium sulfate (N/ S=l2 and 45) were fed to sheep in metabolism and palatability trials. Both experiments were conducted as a randomized …
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Sulfur Requirements of Container-grown Pin Oak and Japanese Maple
… In other experiments these two species were fertilized with 8 different concentrations of S application (0, 1, 2, 5, 10, 20, 40, or 80 mg·liter-1). Regression analysis revealed dry weights of both species were near maximum at the extrapolated application concentration of 30 mg·liter-1 S, …
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The effects of foliar applications of seaweed extracts on plant growth and pest resistance
… fourth cutting alfalfa (Medicago sativa L.) in fertilized and nonfertilized plots. Kelp treatments alone had no effect on alfalfa yield and quality, on tissue levels of nitrogen, phosphorus, and potassium, or on populations of potato leafhopper (PLH), Empoasca fabae (Harris). For the fourth …
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