Index Catalog // ScholarsArchive@OSU

Cyperus esculentus control with glyphosate : time of application and addition of ammonium sulfate

Creator:: Costa, Jaime
Abstract:: Cyperus esculentus L. var. esculentus is a serious weed problem in northwest Spain. Long-term control from glyphosate and other herbicides has been inconsistent. Field, greenhouse, and laboratory studies were conducted on factors influencing the activity of glyphosate on C. esculentus. In field studies, glyphosate controlled foliage growth at most growth...
Resource Type:: Dissertation
Full Text:: Gloria M. Foster for Jaime Costa ACKNOWLEDGMENTS My most sincere appreciation to Dr. Arnold P

Possible association between grain protein content and yield as influenced by harvest index and biological yield in selected hard red winter wheat (Triticum aestivum L.) crosses

Creator:: Costa, José María
Abstract:: Grain yield and grain protein are often negatively associated in wheat. When yield increases and grain protein decreases, there can be an adverse effect on the milling and baking quality if the desired end product is bread flour. It has been suggested that this inverse association is the result of...
Resource Type:: Masters Thesis
Full Text:: aestivum L.) crosses AN ABSTRACT OF THE THESIS OF Jose M. Costa for the degree of Master of Science in

Studies on resistance of rice to Sogatodes oryzicola (Muir) and a parasitoid, Haplogonatopus sp., in Costa Rica

Creator:: Alvarez B., Francisco
Abstract:: Twenty-one rice cultivars were evaluated to determine the difference between populations of Sogatodes oryzicola (Muir) (Homoptera: Delphacidae) in Costa Rica and Colombia, Survival, mortality and population development of S. oryzicola on five selected cultivars was used to determine levels of plant resistance. The importance and potential of the parasitoid-predator Haplogonatopus...
Resource Type:: Masters Thesis
Full Text:: ) and a parasitoid, Haplogonatopus sp., in Costa Rica AN ABSTRACT OF THE THESIS OF Francisco Alvarez

The effect of major environmental factors on growth rates of five important tree species in Costa Rica

Creator:: Camacho, Pablo
Abstract:: The growth of Alnus acuminata (HBK) 0. Ktze, Cupressus lusitanica Mill., Gmelina arborea Roxb, Pinus caribaea var. hondurensis Barr. & Golf., and Tectona grandis L. in Costa Rica and twenty seven soil and climatic factors were analyzed to determine the relationship between major environmental factors and growth rates of these...
Resource Type:: Masters Thesis

An analysis of Costa Rican export earnings under the Caribbean Basin Economic Recovery Act (CBERA)

Creator:: Murillo-Martinez, Carlos G.
Abstract:: This Thesis explores the possibility of increased export and export earnings stability for Costa Rica after the implementation of the Caribbean Basin Economic Recovery Act (CBERA) or Caribbean Basin Initiative (CBI). It was expected that this policy would not only increase trade and exports for some developing nations in the...
Resource Type:: Masters Thesis
Full Text:: ) (Date) Title: AN ANALYSIS OF COSTA RICAN EXPORT EARNINGS UNDER THE CARIBBEAN BASIN ECONOMIC

Modelling tidal circulation and dispersion in the Gulf of Nicoya, Costa Rica

Creator:: Murillo, Luis
Resource Type:: Masters Thesis
Full Text:: &, Costa Rica; 10. 26. 1979. 0 p p / A / 'Td -I.',' UflOH c Iz 81 LI 91 SI I ei II 01 6 9

Saudi and non-Saudi Arab male students' attitudes toward science and science achievement in secondary schools, Riyadh, Saudi Arabia

Creator:: Al-Shargi, Mohammed Rashed
Abstract:: The purpose of this study was (a) to develop a valid and reliable attitude toward science instrument for use with Arabic male students at the secondary school level, (b) to determine the differences in their attitudes toward science and in their achievement, and (c) to determine the relationship between measures...
Resource Type:: Dissertation
Full Text:: Achievement in Secondary Schools, Riyadh, Saudi Arabia Redacted for privacy Abstract approved: Thomas P

Non-herbicidal effects of dinoseb on winter wheat yields

Creator:: Valverde, Bernal E.
Abstract:: A series of experiments were conducted from 1983 to 1985 to determine the effects of dinoseb [2-(1-methylpropyl)-4,6-dinitrophenol] on winter wheat (Triticum aestivum L. em Thell) yields. Field trials on dinoseb timing and dinoseb plus supplemental pesticides were established in an effort to elucidate the possible factors involved in the yield...
Resource Type:: Masters Thesis
Full Text:: financial support and counseling. I am indebted to the Universidad Nacional, Costa Rica, who submitted my

Influence of ethylene treatments or ethephon dips on bulbous iris forcing

Creator:: Cascante Herrera, Xenia
Abstract:: A series of 3 experiments was conducted from 1984 to 1986 to determine the influence of ethylene gas treatments and ethephon [(2-chloroethyl) phosphonic acid] dips, in combination with several heat curing durations, on the performance of greenhouse-forced Blue Ribbon and Ideal iris. In the first study which examined the effects...
Resource Type:: Masters Thesis
Full Text:: Ethylene Treatments or Ethephon Dips on Bulbous Iris Forcing Abstract approved: Dr. Robert P. Doss

Forestry theses accepted by colleges and universities in the United States : July 1976 - June 1981

Creator:: Kinch, Michael P.
Abstract:: This is a listing of both PhD and Master's· theses relating to the areas of forestry issued during the period from July 1976 to June 1981. The list is arranged first by state, then by college or university within each state. Authors of theses are arranged alphabetically under each of...
Resource Type:: Book
Full Text:: States July L976-June 198 1 Compiled by Michael P. Kinch Assisted by Polli Butzner and Alison Thomas

ScholarsArchive@OSU

Cyperus esculentus control with glyphosate : time of application and addition of ammonium sulfate

Possible association between grain protein content and yield as influenced by harvest index and biological yield in selected hard red winter wheat (Triticum aestivum L.) crosses

Studies on resistance of rice to Sogatodes oryzicola (Muir) and a parasitoid, Haplogonatopus sp., in Costa Rica

The effect of major environmental factors on growth rates of five important tree species in Costa Rica

An analysis of Costa Rican export earnings under the Caribbean Basin Economic Recovery Act (CBERA)

Modelling tidal circulation and dispersion in the Gulf of Nicoya, Costa Rica

Saudi and non-Saudi Arab male students' attitudes toward science and science achievement in secondary schools, Riyadh, Saudi Arabia

Non-herbicidal effects of dinoseb on winter wheat yields

Influence of ethylene treatments or ethephon dips on bulbous iris forcing

Forestry theses accepted by colleges and universities in the United States : July 1976 - June 1981

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