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Influence of canopy orientation on fruiting of 'Ànjou' pears and postharvest urea spray on ovule longevity and fruit set of 'C̀omice' pears

Creator:: Khemira, Habib
Abstract:: The effect of canopy orientation on fruiting performance of 'Beurre d'Anjou' pears (Pyrus communis L.) and postharvest urea spray on ovule longevity and fruit set of 'Doyenne du Comice' pears were studied. Hedgerows of 'Beurre d'Anjou' pear trees planted in 1969 in two orientations north-south (N-S) and east-west (E-W) were...
Resource Type:: Masters Thesis
Full Text:: concentrated solutions of urea, it is possible to decrease substantially the amount of fertilizer applied for

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:: and Plant Growth 4 Nitrogen-Sulphur Relationships 6 Sulphur-Urea Fertilizer 8 S-urea Dissolution and

Effects of nitrogen source, rate and a nitrification inhibitor on soil nitrogen status and mineral composition of strawberry

Creator:: Marion, Carol I.
Abstract:: Three rates of urea, urea-DCD, and NH₄N0₃ were soil applied in April and August 1986 to strawberry selection OR-US 4930 and cultivar 'Sumas' to determine effects of the nitrification inhibitor dicyandiamide (DCD) and nitrogen source and rate on soil NH₄ and N0₃ levels, fruit yield and quality, and mineral composition...
Resource Type:: Masters Thesis
Full Text:: leaching and ground water contamination. When urea-DCD was applied as a nitrogen fertilizer in August

Ammonia Volatilization from Nitrogen Fertilizers and Wastewater Reuse in the Columbia Basin

Creator:: Del Moro, Sarah K.
Abstract:: Ammonia (NH₃) volatilization and loss from nitrogen (N) fertilizer in agriculture negatively impacts crops, farm profitability, human health and surrounding ecosystems where it is deposited. A significant source of NH₃ volatilization occurs from surface application of urea on sandy soils with low pH buffering capacity such as those in the...
Resource Type:: Masters Thesis
Full Text:: that use urea as a primary N fertilizer source. Ammonia volatilization is also an important loss

The effect of varying levels of readily available carbohydrates on urea utilization

Creator:: Wright, Rodney Joseph
Abstract:: The object of this research was to study the effect of readily available carbohydrates (RAC) upon the utilization of urea in fattening rations and to determine the effect upon carcass characteristics that determine quality and yield grades. A 2 x 2 latin square designed feedlot trial comparing urea at 0.5%...
Resource Type:: Masters Thesis
Full Text:: proving urea could be used as protein replacement to study of the nutritive factors that affect the

Incinerated sewage sludge use as a soil amendment for sweet corn (Zea mays L.)

Creator:: Mellbye, Mark Edward
Abstract:: Field and greenhouse experiments were conducted to determine the suitability of using incinerated sewage sludge ash as a soil amendment for sweet corn production on Willamette silt loam. In 1977, field plots were treated with 0, 11, 22, and 43 mt/ha of ash containing lime, in factorial combination with a...
Resource Type:: Masters Thesis
Full Text:: evaluating sludge ash as a fertilizer are scant, although one report from Iran where Parsa and Lindsay (1972

Daily and alternate day supplementation of urea of biuret to ruminants consuming low-quality forage

Creator:: Currier, Thomas A.
Abstract:: Data is limited evaluating infrequent supplementation of urea or biuret to ruminants consuming low-quality forage (<6% crude protein). Therefore, a series of experiments were designed to compare the effects of daily (D) and alternate day (2D) supplementation of two non-protein nitrogen (NPN) sources (urea or biuret) to ruminants consuming low-quality...
Resource Type:: Masters Thesis
Full Text:: for urea as SF decreased compared with biuret. Ruminal NH3-N on the day only daily supplements were

The effect of dried sulfite waste liquor on certain properties of two western Oregon soils

Creator:: Goertzen, Jack Oliver
Resource Type:: Masters Thesis
Full Text:: fertilized as were the remaining three replications in which sunflower seeds nere planted. Yields were

Soil and rumen microbial responses to photooxidized grass straw

Creator:: Park, Jerry Eugene
Abstract:: Straw has many uses, as feed, roughage, animal bedding, but these requirements are not sufficient to utilize the available production. In areas where grasskseed is produced, post-harvest straw is burned in the field to help prevent crop disease the following year. This treatment is very wasteful in terms of straw...
Resource Type:: Masters Thesis
Full Text:: PHOTOOXIDIZEASS,STRAW Redacted for Privacy Abstract approved: Dr. A. Klein Straw has many uses, as feed

Sulfur fertilization of legumes in relation to animal nutrition

Creator:: Day, Wylie Ford
Resource Type:: Masters Thesis
Full Text:: and sulfur compounds. The need and value of sulfur as a fertilizer was established by the Orecon

ScholarsArchive@OSU

Influence of canopy orientation on fruiting of 'Ànjou' pears and postharvest urea spray on ovule longevity and fruit set of 'C̀omice' pears

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

Effects of nitrogen source, rate and a nitrification inhibitor on soil nitrogen status and mineral composition of strawberry

Ammonia Volatilization from Nitrogen Fertilizers and Wastewater Reuse in the Columbia Basin

The effect of varying levels of readily available carbohydrates on urea utilization

Incinerated sewage sludge use as a soil amendment for sweet corn (Zea mays L.)

Daily and alternate day supplementation of urea of biuret to ruminants consuming low-quality forage

The effect of dried sulfite waste liquor on certain properties of two western Oregon soils

Soil and rumen microbial responses to photooxidized grass straw

Sulfur fertilization of legumes in relation to animal nutrition

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