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Articles 1 - 18 of 18
Full-Text Articles in Life Sciences
Pesticide Use On Broccoli, Cabbage, Cauliflower And Peppers Grown In Connecticut: 1991, James J. Turner Ii, Candace L. Bartholomew
Pesticide Use On Broccoli, Cabbage, Cauliflower And Peppers Grown In Connecticut: 1991, James J. Turner Ii, Candace L. Bartholomew
Storrs Agricultural Experiment Station
No abstract provided.
Arkansas Rice Research Studies 1992, B. R. Wells
Arkansas Rice Research Studies 1992, B. R. Wells
Arkansas Agricultural Experiment Station Research Series
The research reports in this publication represent one year of results; therefore, these results should not be used as a basis for longterm recommendations. Several research reports in this publication dealing with soil fertility also appear in Arkansas Soil Fertility Studies 1992, Arkansas Agricultural Experiment Station Research Series 425. This duplication is the result of the overlap in research coverage between the two series and our effort to inform Arkansas rice producers of all the research being conducted with funds from the rice check-off.
Life History And Description Of Immature Stages Of Procecidochares Stonei Blanc & Foote On Viguiera Spp. In Southern California (Diptera: Tephritidae), John F. Green, David H. Headrick, Richard D. Goeden
Life History And Description Of Immature Stages Of Procecidochares Stonei Blanc & Foote On Viguiera Spp. In Southern California (Diptera: Tephritidae), John F. Green, David H. Headrick, Richard D. Goeden
Horticulture and Crop Science
Procecidochares stonei Blanc & Foote is a facultatively multivoltine, stenophagous, gall-forming fruit fly on Viguiera laciniata Gray and V. deltoidea Gray var. parishii (Greene) Vasey and Rose (Asteraceae) in southern California. The latter host record is new; other published host records are questioned. Eggs, first through third instar larvae, and puparia are described for the first time. Galls formed on both host plants are described. The severe drought in southern California during the last 5 years has reduced the densities of P. stonei on V. d. var. parishii. Fly reproduction was restricted to one generation per year on the few …
Life History And Description Of Immature Stages Of Aciurina Thoracica (Diptera: Tephritidae) On Baccharis Sarothroides In Southern California, David H. Headrick, Richard D. Goeden
Life History And Description Of Immature Stages Of Aciurina Thoracica (Diptera: Tephritidae) On Baccharis Sarothroides In Southern California, David H. Headrick, Richard D. Goeden
Horticulture and Crop Science
Aciurina thoracica Curran forms galls on branches of at least three species of Baccharis in southern California. The egg, second and third instars, and puparium obtained from B. sarothroides Gray are described and illustrated. Aciurina thoracica's median oral lobe is described and illustrated. The egg is inserted singly into branch tips of B. sarothroides in early spring. Gall and larval growth continue through summer and fall, and pupariation occurs in early winter. Adults emerge in late winter or early spring, mate, and oviposit into newly forming branch tips. Adult behavior including courtship and copulation is described and compared with other …
Important Pests Of Ornamental Aspen, F. A. Baker, Karen Shotwell, Diane Alston, Sherman Thomson
Important Pests Of Ornamental Aspen, F. A. Baker, Karen Shotwell, Diane Alston, Sherman Thomson
All Archived Publications
No abstract provided.
Sodic Soils Are Occurring More Frequently In Utah. How Should They Be Managed?, D. W. James
Sodic Soils Are Occurring More Frequently In Utah. How Should They Be Managed?, D. W. James
All Archived Publications
No abstract provided.
Diagnostic Testing For Nitrogen Soil Fertility, D. W. James
Diagnostic Testing For Nitrogen Soil Fertility, D. W. James
All Archived Publications
No abstract provided.
Utah Fertilizer Guide, D. W. James, K. F. Topper
Utah Fertilizer Guide, D. W. James, K. F. Topper
All Archived Publications
No abstract provided.
The Russian Wheat Aphid In Utah, Jay B. Karren
The Russian Wheat Aphid In Utah, Jay B. Karren
All Archived Publications
No abstract provided.
Pea Aphid Outbreaks Associated With Spraying For The Alfalfa Weevil In Utah, Ted Evans, Jay B. Karren, Clyde Hurst
Pea Aphid Outbreaks Associated With Spraying For The Alfalfa Weevil In Utah, Ted Evans, Jay B. Karren, Clyde Hurst
All Archived Publications
No abstract provided.
Breeding Systems For Cross-Pollinated Perennial Grasses, K. P. Vogel, Jeffrey F. Pedersen
Breeding Systems For Cross-Pollinated Perennial Grasses, K. P. Vogel, Jeffrey F. Pedersen
Department of Agronomy and Horticulture: Faculty Publications
I. Introduction
II. Reproductive and Breeding Characteristics
III. Breeding Systems
A. Ecotype Selection
B. Recurrent, RestricteclPhenotypic Selection
C. Half-sib Progeny Test
D. Between and Within Family Selection
E. Recurrent Multistep Family Selection
IV. Gains From Selection
A. Time Interval per Cycle
B. Potential Gain per Cycle .
C. Potential Inbreeding per Cycle
V. Polycrossing
VI. Hybrid Cultivars
VII. Conclusions
Literature Cited
Genetic Manipulation Of Tall Fescue, Jeffrey F. Pedersen, D. A. Sleper
Genetic Manipulation Of Tall Fescue, Jeffrey F. Pedersen, D. A. Sleper
Department of Agronomy and Horticulture: Faculty Publications
Genetic manipulation of tall fescue (Festuca arnndinacea Schreb.) has not been altered by the discovery of the Acremonium coenophialum (Morgan-Jones and Gams) / grass interaction. However, tall fescue breeding programs have been affected greatly. The basic methods for genetically manipulating the grass have remained static. Tall fescue is an obligate out-crossing species, and most improvements are, therefore, captured in the form of an improved population developed through some form of mass or recurrent selection. What has changed is the breeder's ability to recognize genetic differences in the grass because of the confounding effect of A. coenophialum on plant phenotype. It …
Developmental Morphology Of Tropical Sorghum And Sorghum X Sudangrass, R. B. Mitchell, K. J. Moore, Jeffrey F. Pedersen, T. A. Peterson, L. E. Moser, D. D. Redfearn
Developmental Morphology Of Tropical Sorghum And Sorghum X Sudangrass, R. B. Mitchell, K. J. Moore, Jeffrey F. Pedersen, T. A. Peterson, L. E. Moser, D. D. Redfearn
Department of Agronomy and Horticulture: Faculty Publications
Tropical sorghum and sorghum x sudangrass are known to be efficient scavengers of soil nitrogen and are important forage crops in the U.S. Nitrate contamination of groundwater due to disposal of organic wastes and excessive fertilization is a major concern in the Central Great Plains. A common disposal method of municipal wastes is application to fallow cropland. Quantification of the developmental morphology of tropical sorghum and sorghum x sudangrass is important to developing management strategies that allow multiple applications of organic wastes to optimize nitrogen removal and dry matter production. The objective of this study was to quantify the developmental …
Comparison Of Sorghum And Indiangrass Chloroplast Genomes Using Rflps, Jeffrey F. Pedersen, R. D. Lee, D. J. Lee, K. P. Vogel
Comparison Of Sorghum And Indiangrass Chloroplast Genomes Using Rflps, Jeffrey F. Pedersen, R. D. Lee, D. J. Lee, K. P. Vogel
Department of Agronomy and Horticulture: Faculty Publications
Sorghum (Sorghum bicolor (L.) Moench) and indiangrass (Sorghastrum nutans (L.) Nash) appear closely related based on morphological and chemotaxonomic characters. Each species could potentially provide desirable traits to the other. However, traditional breeding techniques have been unsuccessful in hybridizing these two species. The objective of this study was to determine the relatedness of sorghum and indiangrass chloroplast DNA using RFLPs. Eleven sorghum lines in several cytoplasms, two indiangrass popu1ations, and a corn line were studied using 60 proberestriction enzyme combinations. Principal component analysis of the results showed sorghum to be as closely related to corn as to indiangrass, with no …
Ash/Lilac Borer, Jay B. Karren
What Are The Indirect Costs Of Pesticide Use?, Ted Evans
What Are The Indirect Costs Of Pesticide Use?, Ted Evans
All Archived Publications
No abstract provided.
Cereal Leaf Beetle, Jay B. Karren
Assassin Bug, Alan H. Roe