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Corn (Zea mays L.) yields as influenced by nitrogen, row spacing and intercropped ryegrass (Lolium multiflorum)

Creator:: Wivutvongvana, Paibool
Abstract:: Two field corn experiments were conducted on a Woodburn silt loam soil near Corvallis, Oregon, in 1972-1973 to investigate the effects of certain soil management practices on the yield and performance of corn (Zea mays L.). Experiment I involved variables that included three corn row spacings (76, 114, and 152...
Resource Type:: Masters Thesis
Full Text:: (LOLIUM MULTIFLORUM) Abstract approved: Redacted for privacy Dr. IVL rray D. Dawson Two field corn

Density-dependent selection and the maintenance of genetic variation in life-history attributes : evidence from tribolium castaneum and t. confusum in temporally heterogeneous environments

Creator:: Riddle, Russel R.
Resource Type:: Dissertation
Full Text:: : Peter S. Dawson Density-dependent selection was studied in laboratory popula- tions of two species of

The effects of plant population and nitrogen on sweet corn yields

Creator:: Moss, Joe Dick
Abstract:: The response of sweet corn (Zea mays L. var. rugosa cultivar Jubilee) to 12 populations and four nitrogen rates was studied in a field experiment. Populations ranged from 43, 904 to 329,800 plants/ha with nitrogen levels ranging from 0 to 224 Kg/ha. A systematic spacing design was used. Plant height,...
Resource Type:: Masters Thesis
Full Text:: . Recognition is also given to Dr. Michael H. Chaplin, Dr. William W. Chilcote, and Dr. Murray D

Recycling nitrogen and sulfur in grass-clover pastures

Creator:: Oregon State University. Agricultural Experiment Station, Dawson, M. D. (Murray Drayton), 1925-, and McGuire, William S.
Abstract:: Published June 1972. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: AUTHORS: M. D. Dawson is a professor of soils science and W. S. McGuire is a professor of agronomy, Oregon

Management effects on the nitrogen, phosphorus, and sulphur status of grass-legume pastures

Creator:: Impithuksa, Viroch
Abstract:: These studies were initiated to investigate the influence of previous superphosphate fertilizer practices and grazing stock history on nitrogen, phosphorus and sulphur status in soils from grass-legume pastures. Four Western Oregon soil series, Dixonville, Demint, Winema and Josephine, were included in the study. Laboratory experiments and greenhouse trials were conducted...
Resource Type:: Masters Thesis
Full Text:: approved: Redacted for Privacy M. D. Dawson These studies were initiated to investigate the influence of

Molybdenum status of subclover (Trifolium subterraneum) as affected by Mo and S fertilization and soil type

Creator:: Jarrell, Wesley M.
Abstract:: Field studies designed to study residual effects from fertilizer molybdenum were initiated in September 1971 on established grass-clover pastures at ten sites in Western Oregon. Treatments were 0.0 and 1.12 kg molybdenum /ha on plots receiving 0-35-0-20S fertilizer (elemental sulfur-S) and 0.0, 0.56, 1.12 and 2.24 kg molybdenum /ha on...
Resource Type:: Masters Thesis
Full Text:: appreciation to Dr. M. D, Dawson for his guidance, interest and encouragement throughout this work; Drs. V

The effect of soil temperature and soil moisture stress on S-urea mineralization and ryegrass yield

Creator:: Akratanakul, Wanee
Abstract:: A growth chamber experiment was conducted to determine the rate of S-urea mineralization and effect of S-urea on the yield of ryegrass (Lolium multiflorum) grown in Steiwer soil as influenced by soil temperature (60, 75, and 90° F) and soil moisture stress (0. 10, 0.35, and 2.50 bars). Plant yield,...
Resource Type:: Masters Thesis
Full Text:: approved: Redacted for Privacy Dr. M. D. Dawson A growth chamber experiment was conducted to determine

Subterranean clover yield and nutrient content as influenced by soil molybdenum status

Creator:: Bhella, Harbans Singh
Abstract:: During the Spring of 1969, 47 surface soil samples (0 to 15 cm) as well as foliage samples of subterranean clover were collected from 32 selected western Oregon pastures, in an effort to determine their molybdenum status and to evaluate the use of anion exchange resin method as a means...
Resource Type:: Masters Thesis
Full Text:: : M. D. Dawson During the Spring of 1969, 47 surface soil samples (0 to 15 cm) as well as foliage

Effective nodulation and production of subterranean clover with pelleted and small amounts of lime

Creator:: McGuire, William S., Dawson, M. D. (Murray Drayton), 1925-, Crofts, F. C. (Frank Clement), and Oregon State University. Agricultural Experiment Station
Abstract:: Published May 1978. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: with Pelleted and Small Amounts of Lime W. S. McGuire, M. D. Dawson and F. C. Crofts INTRODUCTION

Dynamics of enzyme polymorphism in a natural population of the boreal toad, Bufo boreas boreas Baird and Girard : evidence of natural selection via differential mortality in early life history stages

Creator:: Samollow, Paul B.
Resource Type:: Dissertation
Full Text:: -- Peter S. Dawson The genetic effects of heavy mortality during early life history stages in a natural

ScholarsArchive@OSU

Corn (Zea mays L.) yields as influenced by nitrogen, row spacing and intercropped ryegrass (Lolium multiflorum)

Density-dependent selection and the maintenance of genetic variation in life-history attributes : evidence from tribolium castaneum and t. confusum in temporally heterogeneous environments

The effects of plant population and nitrogen on sweet corn yields

Recycling nitrogen and sulfur in grass-clover pastures

Management effects on the nitrogen, phosphorus, and sulphur status of grass-legume pastures

Molybdenum status of subclover (Trifolium subterraneum) as affected by Mo and S fertilization and soil type

The effect of soil temperature and soil moisture stress on S-urea mineralization and ryegrass yield

Subterranean clover yield and nutrient content as influenced by soil molybdenum status

Effective nodulation and production of subterranean clover with pelleted and small amounts of lime

Dynamics of enzyme polymorphism in a natural population of the boreal toad, Bufo boreas boreas Baird and Girard : evidence of natural selection via differential mortality in early life history stages

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