Date of Award:

8-2012

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Plants, Soils, and Climate

Committee Chair(s)

Corey V Ransom

Committee

Corey V Ransom

Committee

Blair L. Waldron

Committee

Dale R. ZoBell

Abstract

Forage kochia (Bassia prostrata, [L.] A. J. Scott) (Synonym = Kochia prostrata [L.] Schrad.) is a perennial semi-shrub that is valued for its forage quality and ability to restore degraded rangeland. However, establishment success of forage kochia plantings in western North America has been erratic. These failures leave the land vulnerable to erosion and invasion of undesirable plants. This research focused on the germination dynamics of forage kochia accessions as it relates to harvest date, planting date, age of seed, and environmental conditions. The effect of planting date, age of seed, and environmental conditions on forage kochia germination was elucidated by planting recently harvested (2010) and year-old, cold-stored seed (2009) monthly, during a four-month period at two locations. Two entries were tested, Immigrant, the standard subspecies virescens cultivar, and an experimental line, Sahsel, of subspecies grisea. Regardless of planting date, location, or age of seed, Sahsel exhibited higher germination percentages than Immigrant. The age of the seed lots used also significantly affected (P

Checksum

88dd1cebdabb2f926ef0cdc849594202

Comments

This work made publicly available electronically on July 31, 2012.

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