Index Catalog // ScholarsArchive@OSU

Crop and tree response to planting patterns in alley cropping systems

Creator:: Seiter, Stefan
Abstract:: Growing trees as a green manure crop together with an annual food crop is a new technology for farmers in Oregon. To promote farmer participation and to acquire a broad knowledge of the processes involved in species interactions, three feasible alley cropping and two sweet corn monocrop planting patterns were...
Resource Type:: Masters Thesis
Full Text:: trees for soil productivity and conservation. For example, in Indonesia and the Philippines, there

Crop rotation effects on the seed bank and population dynamics of annual bluegrass (Poa annua)

Creator:: Sardar, Farid M.
Abstract:: Field studies were conducted to evaluate the effect of crop rotation on annual bluegrass plant population dynamics, seed rain, and seed bank in 1996 and 1997 at two sites. Growth-chamber studies were conducted to determine the influence of the mother plant environment on annual bluegrass germination. The change in population,...
Resource Type:: Masters Thesis
Full Text:: environmental quality and the long term 2 productivity of agroecosystems emphasize the need for alternative

Remote sensing of radiation intercepted by vegetation to estimate aboveground net primary production across western Oregon

Creator:: Law, Beverly E.
Abstract:: Remote sensing of variables necessary to estimate net primary production of vegetation over large temporal and spatial scales has been a goal of climate change research. This thesis consists of two studies that address the reliability of satellite and airborne sensors to quantify a basic component of all production models,...
Resource Type:: Dissertation

Statistical comparison of methods used in harvesting work studies

Creator:: Olsen, Eldon D., Hossain, Mohammad M., Miller, Mark E., and Oregon State University. Forest Research Laboratory
Abstract:: Work-study guidelines were developed using field data from thinning sites in the Oregon Cascade Range. Regression of detailed time study and shift-level data predicted harvesting production rates. Statistical analysis showed the relative difference in the discriminating power between shift-level studies versus detailed time studies. Indicator variables tested if there were...
Resource Type:: Technical Report
Full Text:: among the observed alternatives. Even with standardization, productivity of the individual alternatives

Evaluation of productivity and cost of chain saw vs manual tools in the Chir pine forests of Pakistan

Creator:: Siddiqui, Asif Kamal
Abstract:: To improve the present state of Forestry and the condition of forest workers is an important goal to be achieved in developing countries. With the growth of population, demand for wood products is increasing tremendously. Prices have gone up manyfold. One way to meet this demand is to increase productivity...
Resource Type:: Capstone Project

Contending with risk in the seafood processing industry : a bioeconomic portfolio analysis of the Pacific whiting fishery

Creator:: Tuininga, Chris R
Abstract:: Since harvest levels of many of the world's fisheries are not likely to increase in the foreseeable future, resource managers and seafood processors need to develop improved strategies to maximize the utilization and benefits of current catches. In addition to increasing utilization and benefits, seafood processors are subject to the...
Resource Type:: Masters Thesis
Full Text:: other food processors. The productivity of a fishery, like an agricultural crop, is subject to

The impact of basic industries on regional economic growth : a case study of Oregon's agricultural sector

Creator:: Is-hak, Abdulbasit A
Abstract:: The purpose of this study is to evaluate the role of the agricultural sector's output and trade on the economic growth and development of the State of Oregon. Economic base theory is applied in the analysis of Oregon's Gross State Product (GSP) between 1977 and 1991. The basic sector is...
Resource Type:: Masters Thesis
Full Text:: Gross State Product (Output): 38 Exports, Productivity, and GSP: 45 Employment: 48 SUMMARY AND

Long-term management effects on soil productivity and crop yield in semi-arid regions of Eastern Oregon

Creator:: Oregon State University. Agricultural Experiment Station, United States. Agricultural Research Service, Columbia Basin Agricultural Research Center, Rasmussen, Paul E., Collins, Harold P., and Smiley, Richard W.
Abstract:: Long-term experiments were started at Pendleton and Moro, Oregon in the 1930's to evaluate the effects of tillage, fertilizer, and residue management on crop productivity in non-irrigated semi-arid regions. Coupled with multi-year varietal improvement, rotation, and green manure studies, they define those practices which sustain soil productivity and improve crop...
Resource Type:: Technical Report
Full Text:: Management Effects on Soil Productivity and Crop Yield in Semi-Arid Regions of Eastern Oregon ,, 1 ,f

Habitat use and productivity of harlequin ducks in the central Cascade Range of Oregon

Creator:: Bruner, Howard J.
Abstract:: The specific habitat requirements of harlequin ducks (Histrionicus histrionicus Linnaeus 1758), which breed in the Pacific Northwest, are largely unknown. I captured and attached radio transmitters to 42 female harlequins (36 paired and 6 unpaired) in the central Cascade Range of Oregon in 1994 and 1995. Breeding pairs used 3rd...
Resource Type:: Masters Thesis

Influence of channel constraint on primary production, preiphyton biomass, and macroinvertebrate biomass in streams of the Oregon Coast Range

Creator:: Zucker, Steven J.
Abstract:: Differences in primary production and periphyton and macroinvertebrate biomass between pairs of constrained (valley floor width of less than twice the active channel width) and unconstrained reaches were investigated in Elk River and four tributaries in southwest Oregon. In August 1991, macroinvertebrates were sampled from individual cobbles, and rocks were...
Resource Type:: Masters Thesis
Full Text:: primary intermediate through which channel constraint influences the productivity of a stream. The wider

ScholarsArchive@OSU

Crop and tree response to planting patterns in alley cropping systems

Crop rotation effects on the seed bank and population dynamics of annual bluegrass (Poa annua)

Remote sensing of radiation intercepted by vegetation to estimate aboveground net primary production across western Oregon

Statistical comparison of methods used in harvesting work studies

Evaluation of productivity and cost of chain saw vs manual tools in the Chir pine forests of Pakistan

Contending with risk in the seafood processing industry : a bioeconomic portfolio analysis of the Pacific whiting fishery

The impact of basic industries on regional economic growth : a case study of Oregon's agricultural sector

Long-term management effects on soil productivity and crop yield in semi-arid regions of Eastern Oregon

Habitat use and productivity of harlequin ducks in the central Cascade Range of Oregon

Influence of channel constraint on primary production, preiphyton biomass, and macroinvertebrate biomass in streams of the Oregon Coast Range

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