Life Sciences Commons^™

Population Structuring And Patterns Of Morphological Variation In Californian Styrax (Styracaceae), Peter Fritsch

Aliso: A Journal of Systematic and Floristic Botany

Recent studies of genetic variation within and among populations and phylogenetic estimates have provided evidence bearing on the evolutionary history and taxonomy of Styrax in California (S. redivivus). In this paper, data from these studies are further analyzed and integrated with new data from morphology to gain insight into the nature and taxonomic significance of character variation within this species. Six morphological characters thought to be important in the delimitation of infraspecific taxa within S. redivivus were measured on 52 herbarium specimens and analyzed with Pearson correlations and multivariate methods. Five characters are significantly associated with latitude and …

Potential For Crop Residue To Restrict Herbicide Movement In Surface From Water Corn And Soybean Fields, William W. Witt

KWRRI Research Reports

As no-tillage and other conservation tillage practices continue to increase, it is important to have knowledge of herbicide adsorption on crop residue with regard to the potential for the herbicide to be removed from the residue and move with runoff water from the field into nearby surface waters. Previous research had compared herbicide adsorption to various residues, but it was difficult to make comparisons among these studies because the residues were from different crops or the amount of residue decomposition was different. The amount of "weathering" or "aging" of the residue at the time of herbicide treatment could alter the …

Ec96-142 Conservation Reserve Program: Crp Land Use Guide, Douglas Anderson

University of Nebraska-Lincoln Extension: Historical Materials

Conservation Reserve Program (CRP) contracts held by Nebraska producers will begin to expire in 1996. Thousands of acres of grassland will be eligible for haying, grazing or to be returned to other uses. Land-use decisions made by owners and operators will impact the economic viability and long-term productivity of individual farms, as well as the region as a whole.

The intent of the CRP Land Use Guide is not to provide all of the answers, in many instances we don't even know the questions. It is, however, intended to provide an outline of the key issues you will face when …

Ec96-142 Crp Land Use Guide (Conservation Reserve Program), Douglas Anderson

University of Nebraska-Lincoln Extension: Historical Materials

Conservation Reserve Program (CRP) contracts held by Nebraska producers will begin to expire in 1996. Thousands of acres of grassland will be eligible for haying, grazing or to be returned to other uses. Land-use decisions made by owners and operators will impact the economic viability and long-term productivity of individual farms, as well as the region as a whole.

The intent of the CRP Land Use Guide is not to provide all the asnwers - in many instances we don't even know the questions. It is however, intended to provide an outline of the key issues you will face when …

G96-1311 Global Warming: What Is Known And Why Nebraska Agriculture Should Care, William E. Easterling, Cynthia Hayes

University of Nebraska-Lincoln Extension: Historical Materials

The purpose of this NebGuide is to review the facts of global warming, to point out what is sheer speculation, and to suggest why Nebraska agriculture should care about global warming.

Climatologists talk about global warming one year and the next year they talk about global cooling! Depending on the time periods involved, both views may be correct. Over the next few hundred years, the earth may undergo a general cooling trend. This trend is consistent with the regular shifts into and out of ice age conditions that have characterized the earth's climate history of the last 50,000 years. However, …