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Articles 10441 - 10470 of 10753

Full-Text Articles in Botany

Comptonia Peregrina (L.) J.M. Coult., Tom Clark Jul 1950

Comptonia Peregrina (L.) J.M. Coult., Tom Clark

Specimens by Name

No abstract provided.


Myrica Gale L., Tom Clark Jul 1950

Myrica Gale L., Tom Clark

Specimens by Name

No abstract provided.


Acer Pensylvanicum L., Tom Clark Jun 1950

Acer Pensylvanicum L., Tom Clark

Specimens by Name

No abstract provided.


Acer Rubrum Wats., Tom Clark Jun 1950

Acer Rubrum Wats., Tom Clark

Specimens by Name

No abstract provided.


Lippia, J. E. Montes Jun 1950

Lippia, J. E. Montes

Specimens by Name

No abstract provided.


Cypripedium Reginae Walter, Virginus H. Chase Jun 1950

Cypripedium Reginae Walter, Virginus H. Chase

Specimens by Name

No abstract provided.


An Etiological And Host Range Study Of Celery Mosaic In Utah, Dennis H. Hall May 1950

An Etiological And Host Range Study Of Celery Mosaic In Utah, Dennis H. Hall

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Celery mosaic is a virus disease of major economic importance in Utah. In years of severe epiphytotics, it has been a limiting factor in celery production. In 1947 losses due to this disease were estimated to exceed 8 per cent of the total crop. This estimate does not include losses resulting from reduction in grade or from plants discarded in the packing sheds. The celery acreage in Utah dropped from a high of 950 acres in 1946 to 750 acres in 1947 and dropped again in 1948 to 420 acres. Leaders in the industry attributed this reduction in acreage, in …


Microorganisms And Soil Structure, T. M. Mccalla Mar 1950

Microorganisms And Soil Structure, T. M. Mccalla

Department of Agronomy and Horticulture: Faculty Publications

SUMMARY

Laboratory tests were made to determine the effectiveness of different compounds and microbial groups in increasing the stability of Peorian loess lumps against the action of falling water drops. The influence of these on percolation tests in the laboratory was also determined.

Many organic substances-dextrose, sucrose, starch, peptone, cullulose, and gum arabic-did not themselves contribute directly to soil-structure stability, though these substances do furnish energy material for soil microorganisms, which can convert them readily into either microbial tissue or decomposition products that increase soil-structure stability. Lignin, proteins, oils, fats, waxes, resin, and paraffin increased the stability of lumps of …


Verbena Hastata L., T. Clark Jan 1950

Verbena Hastata L., T. Clark

Specimens by Name

No abstract provided.


Chromosome Numbers Of Some Western American Plants, I, Lee W. Lenz Jan 1950

Chromosome Numbers Of Some Western American Plants, I, Lee W. Lenz

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


The Californian Penstemons, Percy C. Everett Jan 1950

The Californian Penstemons, Percy C. Everett

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Some Pacific Coast Plants Seen In England And Scotland, Alice Eastwood Jan 1950

Some Pacific Coast Plants Seen In England And Scotland, Alice Eastwood

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


California Plant Communities-Supplement, Philip A. Munz, David D. Keck Jan 1950

California Plant Communities-Supplement, Philip A. Munz, David D. Keck

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


California Miscellany Ii, Philip A. Munz, John C. Roos Jan 1950

California Miscellany Ii, Philip A. Munz, John C. Roos

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Genetic And Taxonomic Studies In Gilia: I. Gilia Capitata, Verne Grant Jan 1950

Genetic And Taxonomic Studies In Gilia: I. Gilia Capitata, Verne Grant

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Native Trees And Shrubs In Home Landscaping, Guy L. Fleming Jan 1950

Native Trees And Shrubs In Home Landscaping, Guy L. Fleming

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Mimulus Guttatus And Related Species, Gloria R. Campbell Jan 1950

Mimulus Guttatus And Related Species, Gloria R. Campbell

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Some Suggestions For Rock Gardens In Southern California, Edward K. Balls Jan 1950

Some Suggestions For Rock Gardens In Southern California, Edward K. Balls

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Pugillus Astragalorum Xii: Some Problems In California, R. C. Barneby Jan 1950

Pugillus Astragalorum Xii: Some Problems In California, R. C. Barneby

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Lespedezas Of Northwest Arkansas, Orrin J. Henbest Jan 1950

Lespedezas Of Northwest Arkansas, Orrin J. Henbest

Journal of the Arkansas Academy of Science

No abstract provided.


History Of The Introduction Of Three California Natives, Theodore Payne Jan 1950

History Of The Introduction Of Three California Natives, Theodore Payne

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


One Of California's Rare Endemics, Robert Casamajor Jan 1950

One Of California's Rare Endemics, Robert Casamajor

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Three California Natives For Gardens, Gloria R. Campbell Jan 1950

Three California Natives For Gardens, Gloria R. Campbell

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Notes On The Horticultural History Of California Irises, Lee W. Lenz Jan 1950

Notes On The Horticultural History Of California Irises, Lee W. Lenz

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Summer-Holly (Comarostaphylis Diversifolia), Philip A. Munz Jan 1950

Summer-Holly (Comarostaphylis Diversifolia), Philip A. Munz

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Tetramerism In Narcissus, Dwight M. Moore Jan 1950

Tetramerism In Narcissus, Dwight M. Moore

Journal of the Arkansas Academy of Science

No abstract provided.


New Fern Record For Arkansas, Dwight M. Moore Jan 1950

New Fern Record For Arkansas, Dwight M. Moore

Journal of the Arkansas Academy of Science

No abstract provided.


Preliminary Report On The Arkansas Bryophytes, Eugene B. Wittlake Jan 1950

Preliminary Report On The Arkansas Bryophytes, Eugene B. Wittlake

Journal of the Arkansas Academy of Science

No abstract provided.


Grassy Lake: A Biologist's Paradise, Dwight M. Moore Jan 1950

Grassy Lake: A Biologist's Paradise, Dwight M. Moore

Journal of the Arkansas Academy of Science

No abstract provided.


Bryophytes Of Spy Rock Hollow, Eugene B. Wittlake Jan 1950

Bryophytes Of Spy Rock Hollow, Eugene B. Wittlake

Journal of the Arkansas Academy of Science

No abstract provided.