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Chemical And Non-Chemical Control Of Potato Pink Rot, Xuemei (Missi) Zhang

Electronic Theses and Dissertations

Pink rot of potato (Solanum tuberosum) is a widespread soilborne disease that causes significant losses in the field and storage. It is caused by Phytophthora erythroseptica (Pethybr.), an oomycete pathogen that produces sexual spores that can survive in soil for years. The management of pink rot mainly relies on chemical control. However, the most effective chemical in pink rot control, mefenoxam, is losing its efficacy owing to the development of mefenoxam resistance in P. erythroseptica. To evaluate alternative fungicides (including chemical and biological fungicides) to mefenoxam in pink rot control, two greenhouse experiments and three field trials …

Highly Seasonal Reproduction In Desmophyllum Dianthus From The Northern Patagonian Fjords, Keri Feehan

Electronic Theses and Dissertations

The purpose of this study was to determine the basic reproductive biology and seasonality of the Patagonian fjord coral Desmophyllum dianthus. Desmophyllum dianthus is a deep-sea solitary scleractinian found throughout the world’s oceans and an important benthic habitat builder. The Chilean Patagonian fjords are the only known location where this species occurs >50 m and thus are the only place to collect samples efficiently, effectively and economically. Corals were collected via SCUBA approximately every three months (when conditions permitted) from August 2012 to September 2013 from three sites within the Northern Patagonian fjords – Lilihuape (n=76) and Punta Huinay …

Thoreau Fellowship Records, 1960-, Special Collections, Raymond H. Fogler Library, University Of Maine

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Records of the Thoreau Fellowship, a society with its headquarters in Maine. The society encourages publication and activity in the fields of history, conservation, preservation of natural resources, and other interests of Henry David Thoreau. Included are manuscripts of writings, publications, pamphlets, reprints, and photos.

Mendall (Howard Lewis) Ornithology Papers, 1898-1984, Special Collections, Raymond H. Fogler Library, University Of Maine

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Professor Howard L. Mendall was appointed to the University of Maine faculty in Wildlife Resources in 1937. He was a leader in the Cooperative Wildlife Research Unit and was affiliated with the U.S. Department of the Interior.

The papers of Professor Mendall concern primarily his research on birds and in particular ducks. The collection consists mainly of publications (articles, reprints, journals). Some manuscript materials are present along with field note cards.