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Full-Text Articles in Life Sciences
Seed Rain Patterns During Early Recovery On A Strip-Mined Site In Southwestern Wyoming, Hal W. Gordon
Seed Rain Patterns During Early Recovery On A Strip-Mined Site In Southwestern Wyoming, Hal W. Gordon
Undergraduate Honors Capstone Projects
Revegetating surface-mined soils of the western United States is a major problem facing natural resource managers today. The Surface Mine Reclamation and Conservation Act (SMRCA, Public Law 95-87) requires that the opera tor: "… establish on the regraded areas, and all other lands affected, a diverse, effective and permanent vegetative cover of the same seasonal variety native to the area of land to be affected and capable of self-regeneration and plant succession at least equal in extent of cover to the natural vegetation of the area ... "
Historically, most of the coal produced in the U.S. came from the …
Forage Utilization Estimated By Height-Weight And Grazed-Plant Methods, Joann Clark
Forage Utilization Estimated By Height-Weight And Grazed-Plant Methods, Joann Clark
Undergraduate Honors Capstone Projects
Determining utilization has been one of the most difficult tasks required of range scientists down through the years (Pieper 1973). Utilization is defined as the portion of the current year's growth of the plant that the animal consumes or destroys. For this reason it is difficult to measure utilization because you are trying to measure something that no longer exists.
Numerous methods have been developed for determining utilization. Some methods are rapid while others are more detailed and time consuming, but may give greater accuracy.
This study was done to see how well utilization estimates made by the grazed-plant method …
The Role Of Plant Hormones In Grass Tiller Development, Marit Snow
The Role Of Plant Hormones In Grass Tiller Development, Marit Snow
Undergraduate Honors Capstone Projects
Two bunchgrass species commonly found in the Intermountain West, Agropyron spicatum and A. desertorum, are morphologically similar but respond to defoliation very differently. A. desertorum produces more daughter tillers and is more hardy than A. spicatum. Hormones were applied to experimental plants to observe changes in tillering rates, growth rates, and response of plants to the stress of exogenous hormone application. Gibberellic acid treatments were related to increased tiller height in both species, but also a decrease in daughter tiller production in A. desertorum and an increase in senescence in A. spicatum. Kinetin increased senescence in A. desertorum. Auxin showed …