Index Catalog // ScholarsArchive@OSU

Yield and other agronomic characters of winter wheat cultivars as affected by five seeding rates and three different environmental conditions

Creator:: Güler, Mengü
Abstract:: Five newly released and two Eastern European winter wheat cultivars were grown under five different seeding rates (80, 160, 240, 320, 400 seeds per m²). Four of these newly released cultivars were grown at three different locations which have different environmental conditions. Data were obtained on grain yield, tiller number...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for privacy 1 Floyd-E. Bolton Five newly released and two Eastern European

Soil moisture and temperature relationships under fallow in eastern Oregon

Creator:: Russelle, Michael P.
Abstract:: Time of stand establishment is a critical factor affecting yields of winter wheat and barley in the fallow-crop rotation areas of the Pacific Northwest. Farmers in this winter-rainfall region are dependent on residual moisture in the seed zone for germination, because significant precipitation does not usually occur until after the...
Resource Type:: Masters Thesis
Full Text:: TEMPERATURE RELATIONSHIPS UNDER FALLOW IN EASTERN OREGON Redacted for Privacy Abstract approved: Floyd E

Effect of soil temperature, seeding date, and straw mulch on plant development and grain yield of two winter wheat and two winter barley cultivars

Creator:: Pehlivantürk, Alpaslan
Abstract:: Two winter wheat (Triticum aestivum L. em Thell) and two winter barley (Hordeum vulgare L. em Thell) cultivars were grown with and without straw mulch utilizing six different planting dates. Soil temperature was recorded continuously at seeding depth from planting date through March of the crop year. A series of...
Resource Type:: Masters Thesis
Full Text:: WINTER BARLEY CULTIVARS Abstract approved: Redacted for Privacy Floyd E. Bolton Two winter wheat

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:: LEVELS OF SOIL PROFILE MOISTURE Abstract approved: Redacted for Privacy D. Floyd E. Bolton The effect

Water injection into the seed zone as an aid to emergence of dryland cereals

Creator:: Estes, James Patrick
Abstract:: An adequate stand at the optimum time is an important factor affecting potential yield and soil erosion control. However, obtaining adequate stands of fall planted winter wheat in the dryland areas of the Pacific Northwest is often complicated by marginal seed zone soil moisture. The purpose of this laboratory study...
Resource Type:: Masters Thesis
Full Text:: AN AID TO EMERGENCE OF DRYLAND CEREALS Abstract approved: Redacted for privacy f Floyd E. Bolton

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:: DIFFERENT PRECIPITATION LEVELS AND TILLAGE SYSTEMS Redacted for privacy Floyd E.' Bolton Abstract

The effect of fertility level on plant growth and development, water uptake and water stress in dryland wheat production

Creator:: Agamennoni, Raul Jose
Abstract:: Dryland winter wheat in eastern Oregon is usually subjected to water stress several times during the growing period. Moreover, the last three months of growth period depend strongly on the available soil water. The fertility level, stage of growth, availability of soil water and climatic conditions all interact to determine...
Resource Type:: Masters Thesis
Full Text:: DRYLAND WHEAT PRODUCTION Redacted for Privacyapproved: Floyd E. Bolton Dryland winter wheat in eastern

Remote-sensing and geographic information system techniques to map spatial variation of wheat grain yield

Creator:: Roberts, Michael C. (Michael Coy), 1951-
Abstract:: Farmers and researchers are aware of spatial variation in grain yield within farms or fields. Fertilizer management may be improved if techniques can be developed to identify grain yield variations in wheat fields. Aerial color infrared (CIR) photography was used to identify winter wheat (Triticum aestivum L.) canopy biomass variability...
Resource Type:: Masters Thesis
Full Text:: stimulation of my professors, fellow students, and gradudate committee, especially Dr. Floyd E. Bolton

Nitrogen timing and placement effects on grain and plant nitrogen, and grain yield in hard red winter wheat

Creator:: Bohle, Mylen G.
Abstract:: Hard red winter wheat has the potential to be an alternative crop in the Pacific Northwest, however percent grain nitrogen has been unacceptably low and grain yields have been about only 80% of soft white winter wheat. During the late spring and the summer months there is usually little rainfall,...
Resource Type:: Masters Thesis
Full Text:: :_Redacted for Privacy Floyd E. Bolton Hard red winter wheat has the potential to be an alternative crop in

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:: express my appreciation to Dr. Floyd E. Bolton for his encouragement, help and friendship. I thank Dr. A

ScholarsArchive@OSU

Yield and other agronomic characters of winter wheat cultivars as affected by five seeding rates and three different environmental conditions

Soil moisture and temperature relationships under fallow in eastern Oregon

Effect of soil temperature, seeding date, and straw mulch on plant development and grain yield of two winter wheat and two winter barley cultivars

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

Water injection into the seed zone as an aid to emergence of dryland cereals

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

The effect of fertility level on plant growth and development, water uptake and water stress in dryland wheat production

Remote-sensing and geographic information system techniques to map spatial variation of wheat grain yield

Nitrogen timing and placement effects on grain and plant nitrogen, and grain yield in hard red winter wheat

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

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