Index Catalog // ScholarsArchive@OSU

Start Over

Filtering by: Creator Schulthess, J. Decade 2000-2009

Responses and relationships among Fusarium species, sweet corn, and western spotted cucumber beetles

Creator:

Miller, Nathan L. (Nathan Louis)

Abstract:

Sweet corn (Zea mays L.) yields in the Willamette Valley of Oregon have been declining since the early 1990’s. Studies were done to determine if there is a relationship between ear weight and several disease parameters including necrotic crowns or stalk nodes, nodal root rot, radicle root rot, and sub-crown...

Resource Type:

Dissertation

Full Text:

Press. 101 pp. 3. Shane, M. W., McCully, M. E., and Canny, M. J. 2000. The vascular system of maize
The effect of climate variation on agro-pastoral production in Africa

Creator:

Stige, Leif Christian, Stave, Jørn, Chan, Kung-Sik, Ciannelli, Lorenzo, Pettorelli, Nathalie, Glantz, Michael, Herren, Hans R., and Stenseth, Nils Chr.

Abstract:

Using national crop and livestock production records from 1961–2003 and satellite-derived data on pasture greenness from 1982–2003 we show that the productivity of crops, livestock, and pastures in Africa is predictably associated with the El Niño Southern Oscillation and the North Atlantic Oscillation. The causal relations of these results are...

Resource Type:

Article

Full Text:

type in country i in year j; e1 and e2 are threshold values of the ENSO index; n1 and n2 are threshold
Karl Jordan : a life in systematics

Creator:

Johnson, Kristin Renee

Abstract:

Karl Jordan (1861-1959) was an extraordinarily productive entomologist who influenced the development of systematics, entomology, and naturalists' theoretical framework as well as their practice. He has been a figure in existing accounts of the naturalist tradition between 1890 and 1940 that have defended the relative contribution of naturalists to the...

Resource Type:

Dissertation

Full Text:

problems that arise when historians unduly 19 Mayr, "Prologue," p. 6. 20 Daniel J. Kevies. "Genetics in