Index Catalog // ScholarsArchive@OSU

Do lagoon physiography and hydrology determine the physico-chemical properties and trophic status of coastal lagoons? A comparative approach

Creator:: Roselli, L., Canedo-Argueelles, M., Costa Goela, P., Cristina, S., Rieradevall, M., D'Adamo, R., and Newton, A.
Abstract:: Coastal lagoons are very heterogeneous systems covering a wide range of physiographical and hydrological characteristics. The hypothesis of the present investigation was to test physiographical and hydrological characteristics of coastal lagoons affecting their physico-chemical properties and their buffer capacity against nutrient enrichment. We compared data collected during a whole annual...
Resource Type:: Article
Full Text:: (UB), Diagonal 645, 08028 12 Barcelona, Spain 13 14 Costa Goela P. 15 CIMA – Centro de

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

Comparisons of morphology and susceptibility to herbicides of two yellow nutsedge (Cyperus esculentus L.) varieties

Creator:: Costa, Jaime
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF JAIME COSTA for the degree

The agronomic, economic and social effects of the availability of new weed control treatments to small corn farmers in the North Atlantic Zone of Costa Rica

Creator:: McCarty, Thomas Vere
Abstract:: The North Atlantic zone of Costa Rica is an alluvial plain, whose fairly good soils and warm, extremely wet climate generate serious weed problems in cultivated crops and pastureland. Basic foods - corn, beans, rice and yuca - are important small farm crops. New land is still being opened for...
Resource Type:: Masters Thesis
Full Text:: THE NORTH ATLANTIC ZONE OF COSTA RICA - Abstract approved: Dr. Frank S. Con in The North Atlantic

The fertilizer value of shrimp and crab processing wastes

Creator:: Costa, Robert Edward
Abstract:: The Federal Water Pollution Control Act Amendments of 1972 prohibits the discharge of seafood processing solid wastes into navigable waters after July 1, 1977. Oregon shrimp and crab processors must use other methods of disposal for the 15 to 30 million pounds of solid waste generated annually. The application of...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Robert Edward Costa Jr. for the degree of Master of Science in Soil

The preparation and heats of formation of some nickel and cobalt complex salts with certain organic bases

Creator:: Costa, Albert B.
Resource Type:: Masters Thesis
Full Text:: S0A NICKEL AND COBALT COMPLEX SALTS WITH CERTAIN ORGANIC BASES by ALBERT BERNARD COSTA A

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

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

Possible association of grain protein content, harvest index and biological yield in winter wheat populations

Creator:: Costa, Jose Maria
Abstract:: A negative relation between grain protein content and grain yield is frequently observed in wheat (Triticum aestivum L. em Thell) i.e. as grain yield increases, grain protein decreases. It has been suggested that the inverse relation between grain yield and protein is in part the result of developing high yielding...
Resource Type:: Dissertation
Full Text:: index and biological yield in winter wheat populations AN ABSTRACT OF THE THESIS OF Jose Maria Costa

Inoculum potential of vesicular-arbuscular mycorrhizal fungi in two Costa Rican soils with different vegetation covers

Creator:: Fischer, Christine R.
Abstract:: Mycorrhizae are important for plant growth, particularly in nutritionally poor soils. Vesicular-arbuscular mycorrhizae (VAM) are the primary form of mycorrhizae found in tropical plants, and their persistence in the soil as colonizing fungal propagules following deforestation cannot be directly measured. Utilizing the "most probable number" (MPN) method for estimating infective...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Do lagoon physiography and hydrology determine the physico-chemical properties and trophic status of coastal lagoons? A comparative approach

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

Comparisons of morphology and susceptibility to herbicides of two yellow nutsedge (Cyperus esculentus L.) varieties

The agronomic, economic and social effects of the availability of new weed control treatments to small corn farmers in the North Atlantic Zone of Costa Rica

The fertilizer value of shrimp and crab processing wastes

The preparation and heats of formation of some nickel and cobalt complex salts with certain organic bases

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

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

Possible association of grain protein content, harvest index and biological yield in winter wheat populations

Inoculum potential of vesicular-arbuscular mycorrhizal fungi in two Costa Rican soils with different vegetation covers

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