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Soil biological indices and nitrogen availability during a simulated transition from inorganic to organic sources of nitrogen

Creator:: Fauci, Mary F.
Resource Type:: Masters Thesis
Full Text:: matter content and biological activity. These soil were used in a greenhouse study conducted to

Nitrate nitrogen accumulation and distribution in the soil profile during a fallow grain rotation as influenced by different levels of soil profile moisture

Creator:: Aktan, Selman
Abstract:: The effect of different soil moisture levels on the amount and location of NO₃ -N accumulation in the soil profile were studied. The cultivars used in this study were Mcdermid, a soft white winter wheat, and Hudson, a medium early winter barley. Moisture treatments simulating dry, normal and wet fallow...
Resource Type:: Masters Thesis
Full Text:: in a higher soil nitrogen content than straw alone. The results also indicated that straw without 13

Nitrate-nitrogen accumulation in the surface soil during the fallow period under different precipitation levels and tillage systems

Creator:: Senel, Atila Huseyin
Abstract:: The effects of different fallow moisture levels and tillage systems on the amount of nitrate-nitrogen accumulation in the 0-30 cm soil profile were studied. Fallow moisture treatments simulating typical dry, normal and wet precipitation cycles were established on trial plots. Data were obtained for nitrate-nitrogen, soil moisture and nitrogen mineralization...
Resource Type:: Masters Thesis
Full Text:: fallow season precipitation 2 Gravimetric soil water content as a function of time at 0-15 cm soil

Effects of tillage systems on nitrate-nitrogen accumulation and soil structure

Creator:: Avcin, Abdulkadir
Abstract:: Effects of different tillage systems on nitrate-nitrogen accumulation in a 120 cm profile and on soil structure in the top 30 cm of the profile were studied under a fallow-wheat rotation. Treatment effects on nitrate-nitrogen, soil moisture and soil aggregation were measured. Fallow tillage treatments consisting of bare fallow, stubble-mulch...
Resource Type:: Masters Thesis
Full Text:: . Effects of three tillage systems on soil bulk density and organic matter content during fallow. 53 8

Changes in soil respiration patterns induced by altering carbon-to-nitrogen ratio with nitrate nitrogen

Creator:: McCarthy, Charlotte Marie
Resource Type:: Masters Thesis
Full Text:: LITERATURE REVIE Woilny d1scvcred in 1880 that the carbon dioxide content of the soil rises and falls

Soil nitrogen and organic matter as affected by Austrian winter peas

Creator:: Oveson, M. M. (Merrill Mahonri), 1900-
Resource Type:: Masters Thesis
Full Text:: 33 Organic Mittlr Content of Soil Soil ib. I 38 Soil No. II 38 Discussion 44 Summary 50 SOIL

Understory vegetation effects on soil nitrogen and soil carbon in thinned and unthinned Douglas-fir forests

Creator:: Geyer, Eric A.
Abstract:: The optimum goal of forest management is to foster long-term productivity and ecological integrity while maintaining or increasing short-term growth and yield through sustainable practices. Understory vegetation plays a definite role in forest functions through nutrient cycling and habitat provisions. The objective of this study was to determine how salal,...
Resource Type:: Masters Thesis
Full Text:: 5.3% N. Nutrient content is controlled by the soil's ability, determined by the soil type, to supply

Estimating plant-available nitrogen release from manures, composts, and crop residues

Creator:: Gale, Eric S.
Abstract:: In order to properly utilize organic amendments as nitrogen sources, reliable methods to estimate plant-available nitrogen (PAN) are needed. The objectives of this study were to (1) evaluate the use of crop and soil responses in fertilizer N equivalence (FNE) calculations, (2) examine the relationships between the C/N ratio, total...
Resource Type:: Masters Thesis
Full Text:: Master of Science in Soil Science presented on September 17. 2004. Title: Estimating Plant-Available

Growth rate of wheat (Triticum aestivm L., var. Gaines) as a function of moisture stress and nitrogen supply

Creator:: Amujo, Stephen Jimo
Abstract:: The effect of moisture stress and nutrients on the rate of growth of wheat (Triticum aestivum L. Var. Gaines) seedlings was studied. A special apparatus in which the moisture stress of several perlite cells could be maintained constant by osmotic solutions was used. Predetermined amounts of nitrogen were added to...
Resource Type:: Masters Thesis
Full Text:: that an application of 80 lb of N/acre to a soil with a nitrogen content of 0. 37 lbs of N/acre

Effects of forest soil compaction on gas diffusion, denitrification, nitrogen mineralization, and soil respiration

Creator:: Pascoe, Frank (Frank Nicanor), 1958-
Resource Type:: Masters Thesis
Full Text:: . Average soil moisture content and soil temperature by sampling period 25 5. Average rates of field

ScholarsArchive@OSU

Soil biological indices and nitrogen availability during a simulated transition from inorganic to organic sources of nitrogen

Nitrate nitrogen accumulation and distribution in the soil profile during a fallow grain rotation as influenced by different levels of soil profile moisture

Nitrate-nitrogen accumulation in the surface soil during the fallow period under different precipitation levels and tillage systems

Effects of tillage systems on nitrate-nitrogen accumulation and soil structure

Changes in soil respiration patterns induced by altering carbon-to-nitrogen ratio with nitrate nitrogen

Soil nitrogen and organic matter as affected by Austrian winter peas

Understory vegetation effects on soil nitrogen and soil carbon in thinned and unthinned Douglas-fir forests

Estimating plant-available nitrogen release from manures, composts, and crop residues

Growth rate of wheat (Triticum aestivm L., var. Gaines) as a function of moisture stress and nitrogen supply

Effects of forest soil compaction on gas diffusion, denitrification, nitrogen mineralization, and soil respiration

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