Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 30 of 32

Full-Text Articles in Life Sciences

Ua66/5 Newsletter, Vol. I, Issue 1, Wku Agriculture Oct 2006

Ua66/5 Newsletter, Vol. I, Issue 1, Wku Agriculture

WKU Archives Records

Newsletter created by WKU Agriculture Department re: faculty/staff, students/alumni, student organizations and clubs and donors.


Frozen Beetle Treats Are Environmentally Friendly, W. John Hayden Aug 2006

Frozen Beetle Treats Are Environmentally Friendly, W. John Hayden

Biology Faculty Publications

At my rural household, the most vexatious insect pest has got to be the ubiquitous Japanese beetle. Native to Japan, these pests have infested most of eastern North America, with isolated infestations appearing in some western states. One reason that Japanese beetles are so bad is that they deliver a double-whammy: the larvae (grubs) consume roots and are particularly destructive of turf and pasture grasses while the adults consume leaves and flowers of a wide variety of plants, leaving behind skeletonized versions of the plant parts consumed.


Field Evaluation Of Herbicides On Rice 2005, Drew T. Ellis, Ronald E. Talbert, Marilyn R. Mcclelland Jul 2006

Field Evaluation Of Herbicides On Rice 2005, Drew T. Ellis, Ronald E. Talbert, Marilyn R. Mcclelland

Arkansas Agricultural Experiment Station Research Series

Field studies to evaluate herbicides in rice weed management systems were conducted in 2005 at the Rice Research and Extension Center near Stuttgart, Arkansas. New herbicides, herbicide mixtures, and application timings were evaluated for weed control efficacy and rice tolerance. Results of these studies, in part, provide useful information to producers, fellow researchers, and the crop protection industry for the most effective, economical herbicide programs for successful rice production in Arkansas.


Pb1589-Commercial Insect And Mite Control For Trees, Shrubs And Flowers, The University Of Tennessee Agricultural Extension Service Apr 2006

Pb1589-Commercial Insect And Mite Control For Trees, Shrubs And Flowers, The University Of Tennessee Agricultural Extension Service

Commercial Horticulture

No abstract provided.


The Physiology Of Cranberry Yield, Teryl Roper Jan 2006

The Physiology Of Cranberry Yield, Teryl Roper

Cranberry Station Fact Sheets

No abstract provided.


Research Update Meeting 2006 - Sare Project, Water And Plant Canopy Management: Sanding, Pruning, Irrigation, Drainage, Carolyn J. Demoranville, Hilary A. Sandler, Frank Caruso, Anne L. Averill, Justine Vanden Heuvel, Martha Sylvia Jan 2006

Research Update Meeting 2006 - Sare Project, Water And Plant Canopy Management: Sanding, Pruning, Irrigation, Drainage, Carolyn J. Demoranville, Hilary A. Sandler, Frank Caruso, Anne L. Averill, Justine Vanden Heuvel, Martha Sylvia

Cranberry Station Extension meetings

No abstract provided.


Research Update Meeting 2006 - Insect Management 2006, Anne L. Averill Jan 2006

Research Update Meeting 2006 - Insect Management 2006, Anne L. Averill

Cranberry Station Extension meetings

No abstract provided.


Pesticide Safety 2006 - Best Management Practices 2006, Carolyn J. Demoranville Jan 2006

Pesticide Safety 2006 - Best Management Practices 2006, Carolyn J. Demoranville

Cranberry Station Extension meetings

No abstract provided.


Dynamic Modeling Of Microclimate And Environmental Control Strategies In A Greenhouse Coupled With A Heat Pump System, Ilhami Yildiz, D. P. Stombaugh Jan 2006

Dynamic Modeling Of Microclimate And Environmental Control Strategies In A Greenhouse Coupled With A Heat Pump System, Ilhami Yildiz, D. P. Stombaugh

BioResource and Agricultural Engineering

The purpose of this study was to develop and validate a dynamic simulation model to be employed in accurate prediction of microclimate in a greenhouse as a function of dynamic environmental factors. The model has options to evaluate the effects of location, time of the year, orientation, single and double polyethylene glazings, conventional and heat pump heating and cooling systems, open and confined greenhouse systems, CO2 enrichment, variable shading, and the use of night curtains. Conventional gas furnace and evaporative cooling, respectively, provided heating and cooling in the conventional system. In the heat pump systems, gas-fired heat pump units …


Simulated Performances Of A Heat Pump System For Energy And Water Conservation In Open And Confined Greenhouse Systems, Ilhami Yildiz, D. P. Stombaugh Jan 2006

Simulated Performances Of A Heat Pump System For Energy And Water Conservation In Open And Confined Greenhouse Systems, Ilhami Yildiz, D. P. Stombaugh

BioResource and Agricultural Engineering

The purpose of this study was to determine and compare the performances of conventional and heat pump systems for energy and water conservation in open and confined greenhouse systems. Conventional gas furnaces and evaporative cooling, respectively, provided heating and cooling in the conventional system. In the heat pump systems, gas-fired heat pump units provided both heating and cooling. The greenhouse with heat pump units also had an option to be operated as a completely confined system, using one of the heat pump units as a dehumidifier. Average energy consumption in winter was 56.9, 23.5, and 11.3 MJ/day.m² in the conventional, …


Sugar-Enhanced Sweet Corn Cultivar Evaluation For Northern Indiana, 2006, Elizabeth T. Maynard Jan 2006

Sugar-Enhanced Sweet Corn Cultivar Evaluation For Northern Indiana, 2006, Elizabeth T. Maynard

Midwest Vegetable Trial Reports

The Indiana Agricultural Statistics Service reported sweet corn for fresh market sales was harvested from 5,200 acres in Indiana in 2005 and had a total value of $7.6 million. Sweet corn fields are located throughout the state. In Northern Indiana bicolor corn is most commonly grown. Varieties with improved eating quality are of interest to both producers and consumers. Producers are also interested in yield, ear size and appearance, and agronomic characteristics. This paper reports on eighteen sweet corn cultivars with homozygous se or mixed se and sh2 (synergistic) genetics that were evaluated at the Pinney-Purdue Ag Center, Wanatah, IN.


Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2006, Elizabeth T. Maynard Jan 2006

Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2006, Elizabeth T. Maynard

Midwest Vegetable Trial Reports

The Indiana Agricultural Statistics Service reported sweet corn for fresh market sales was harvested from 5,200 acres in Indiana in 2005 and had a total value of $7.6 million. Sweet corn fields are located throughout the state. In Northern Indiana bicolor corn is most commonly grown. Varieties with improved eating quality are of interest to both producers and consumers. Producers are also interested in yield, ear size and appearance, and agronomic characteristics. This paper reports on twenty sh2 sweet corn cultivars known as ‘supersweet’ or ‘enhanced’ or ‘augmented supersweet’ that were evaluated at the Pinney-Purdue Ag Center, Wanatah, IN.


Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2006, Elizabeth T. Maynard Jan 2006

Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2006, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

The Indiana Agricultural Statistics Service reported sweet corn for fresh market sales was harvested from 5,200 acres in Indiana in 2005 and had a total value of $7.6 million. Sweet corn fields are located throughout the state. In Northern Indiana bicolor corn is most commonly grown. Varieties with improved eating quality are of interest to both producers and consumers. Producers are also interested in yield, ear size and appearance, and agronomic characteristics. This paper reports on twenty sh2 sweet corn cultivars known as ‘supersweet’ or ‘enhanced’ or ‘augmented supersweet’ that were evaluated at the Pinney-Purdue Ag Center, Wanatah, IN.


Sugar-Enhanced Sweet Corn Cultivar Evaluation For Northern Indiana, 2006, Elizabeth T. Maynard Jan 2006

Sugar-Enhanced Sweet Corn Cultivar Evaluation For Northern Indiana, 2006, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

The Indiana Agricultural Statistics Service reported sweet corn for fresh market sales was harvested from 5,200 acres in Indiana in 2005 and had a total value of $7.6 million. Sweet corn fields are located throughout the state. In Northern Indiana bicolor corn is most commonly grown. Varieties with improved eating quality are of interest to both producers and consumers. Producers are also interested in yield, ear size and appearance, and agronomic characteristics. This paper reports on eighteen sweet corn cultivars with homozygous se or mixed se and sh2 (synergistic) genetics that were evaluated at the Pinney-Purdue Ag Center, Wanatah, IN.


Pumpkin Cultivar Evaluation, Northern Indiana, 2006, Elizabeth T. Maynard Jan 2006

Pumpkin Cultivar Evaluation, Northern Indiana, 2006, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

"Pumpkins grown for Halloween and other decorative purposes continue to be an important crop for many Midwestern vegetable farmers. Breeders are developing new varieties with improved appearance and disease resistance. A trial was conducted to evaluate varieties."


On-Farm Evaluation Of Tomato Cultivars For Disease Resistance, 2006, Dan Egel, Butch Zandstra, Elizabeth T. Maynard Jan 2006

On-Farm Evaluation Of Tomato Cultivars For Disease Resistance, 2006, Dan Egel, Butch Zandstra, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

Bacterial spot of tomatoes (Xanthomonas campestris pv. vesicatoria) causes lesions on leaves, stems and fruit. Under conditions of hot, humid, rainy weather, defoliation can result in a loss of yield. In addition, lesions on fruit result in a direct loss of marketability. This disease is managed primarily with applications of fixed copper bactericides, crop rotations, greenhouse sanitation and healthy seed/transplants. Even in properly managed commercial fields, however, bacterial spot can cause yield losses. Although there are no varieties with complete resistance to bacterial spot, we report here the results of an on-farm trial that indicates some varieties may have partial …


Pumpkin Cultivar Evaluation, Northern Indiana, 2006, Elizabeth T. Maynard Jan 2006

Pumpkin Cultivar Evaluation, Northern Indiana, 2006, Elizabeth T. Maynard

Midwest Vegetable Trial Reports

"Pumpkins grown for Halloween and other decorative purposes continue to be an important crop for many Midwestern vegetable farmers. Breeders are developing new varieties with improved appearance and disease resistance. A trial was conducted to evaluate varieties."


On-Farm Evaluation Of Tomato Cultivars For Disease Resistance, 2006, Dan Egel, Butch Zandstra, Elizabeth T. Maynard Jan 2006

On-Farm Evaluation Of Tomato Cultivars For Disease Resistance, 2006, Dan Egel, Butch Zandstra, Elizabeth T. Maynard

Midwest Vegetable Trial Reports

Bacterial spot of tomatoes (Xanthomonas campestris pv. vesicatoria) causes lesions on leaves, stems and fruit. Under conditions of hot, humid, rainy weather, defoliation can result in a loss of yield. In addition, lesions on fruit result in a direct loss of marketability. This disease is managed primarily with applications of fixed copper bactericides, crop rotations, greenhouse sanitation and healthy seed/transplants. Even in properly managed commercial fields, however, bacterial spot can cause yield losses. Although there are no varieties with complete resistance to bacterial spot, we report here the results of an on-farm trial that indicates some varieties may have partial …


Introduction To Edible Crops, Larry A. Sagers Jan 2006

Introduction To Edible Crops, Larry A. Sagers

All Archived Publications

No abstract provided.


Pesticide Safety 2006 - Insecticides Update 2006, Anne L. Averill Jan 2006

Pesticide Safety 2006 - Insecticides Update 2006, Anne L. Averill

Cranberry Station Extension meetings

No abstract provided.


Pesticide Safety 2006 - Groundwater Protection And Water Regulations 2006, Brian Wick Jan 2006

Pesticide Safety 2006 - Groundwater Protection And Water Regulations 2006, Brian Wick

Cranberry Station Extension meetings

No abstract provided.


Pesticide Safety 2006 - Ir-4 Program 2006, Hilary A. Sandler Jan 2006

Pesticide Safety 2006 - Ir-4 Program 2006, Hilary A. Sandler

Cranberry Station Extension meetings

No abstract provided.


Pesticide Safety 2006 - Pesticide Safety 2006, Martha Sylvia Jan 2006

Pesticide Safety 2006 - Pesticide Safety 2006, Martha Sylvia

Cranberry Station Extension meetings

No abstract provided.


Research Update Meeting 2006 - Osc Nitrogen Rate And Pruning Intensity 2006, Hilary A. Sandler Jan 2006

Research Update Meeting 2006 - Osc Nitrogen Rate And Pruning Intensity 2006, Hilary A. Sandler

Cranberry Station Extension meetings

No abstract provided.


Evaluation Of The Single Kernel Characterization System (Skcs) For Measurement Of Sorghum Grain Attributes, S. R. Bean, O. K. Chung, M. R. Tuinstra, Jeffrey F. Pedersen, J. Erpelding Jan 2006

Evaluation Of The Single Kernel Characterization System (Skcs) For Measurement Of Sorghum Grain Attributes, S. R. Bean, O. K. Chung, M. R. Tuinstra, Jeffrey F. Pedersen, J. Erpelding

Department of Agronomy and Horticulture: Faculty Publications

The single kernel characterization system (SKCS) has been widely used in the wheat industry, and SKCS parameters have been linked to end-use quality in wheat. The SKCS has promise as a tool for evaluating sorghum grain quality. However, the SKCS was designed to analyze wheat, which has a different kernel structure from sorghum. To gain a better understanding of the meaning of SKCS predictions for grain sorghum, individual sorghum grains were measured for length, width, thickness (diameter), and weight by laboratory methods and by the SKCS. SKCS predictions for kernel weight and thickness were highly correlated to laboratory measurements. However, …


Chemical Composition And Response To Dilute-Acid Pretreatment And Enzymatic Saccharification Of Alfalfa, Reed Canarygrass, And Switchgrass, Bruce S. Dien, Hans-Joachim G. Jung, Kenneth P. Vogel, Michael D. Casler, Joann F. S. Lamb, Loren Iten, Robert C. Mitchell, Gautum Sarath Jan 2006

Chemical Composition And Response To Dilute-Acid Pretreatment And Enzymatic Saccharification Of Alfalfa, Reed Canarygrass, And Switchgrass, Bruce S. Dien, Hans-Joachim G. Jung, Kenneth P. Vogel, Michael D. Casler, Joann F. S. Lamb, Loren Iten, Robert C. Mitchell, Gautum Sarath

Department of Agronomy and Horticulture: Faculty Publications

Alfalfa stems, reed canarygrass, and switchgrass; perennial herbaceous species that have potential as biomass energy crops in temperate regions; were evaluated for their bioconversion potential as energy crops. Each forage species was harvested at two or three maturity stages and analyzed for carbohydrates, lignin, protein, lipid, organic acids, and mineral composition. The biomass samples were also evaluated for sugar yields following pretreatment with dilute sulfuric followed by enzymatic saccharification using a commercial cellulase preparation. Total carbohydrate content of the plants varied from 518 to 655 g kg-1 dry matter (DM) and cellulose concentration from 209 to 322 g kg …


Mutations In Arabidopsis Yellow Stripe-Like1 And Yellow Stripe-Like3 Reveal Their Roles In Metal Ion Homeostasis And Loading Of Metal Ions In Seeds, Brian M. Waters, Heng-Hsuan Chu, Raymond J. Didonato, Louis A. Roberts, Robynn B. Eisley, Brett Lahner, David E. Salt, Elsbeth L. Walker Jan 2006

Mutations In Arabidopsis Yellow Stripe-Like1 And Yellow Stripe-Like3 Reveal Their Roles In Metal Ion Homeostasis And Loading Of Metal Ions In Seeds, Brian M. Waters, Heng-Hsuan Chu, Raymond J. Didonato, Louis A. Roberts, Robynn B. Eisley, Brett Lahner, David E. Salt, Elsbeth L. Walker

Department of Agronomy and Horticulture: Faculty Publications

Here, we describe two members of the Arabidopsis (Arabidopsis thaliana) Yellow Stripe-Like (YSL) family, AtYSL1 and AtYSL3. The YSL1 and YSL3 proteins are members of the oligopeptide transporter family and are predicted to be integral membrane proteins. YSL1 and YSL3 are similar to the maize (Zea mays) YS1 phytosiderophore transporter (ZmYS1) and the AtYSL2 iron (Fe)-nicotianamine transporter, and are predicted to transport metal-nicotianamine complexes into cells. YSL1 and YSL3 mRNAs are expressed in both root and shoot tissues, and both are regulated in response to the Fe status of the plant. β-Glucuronidase reporter expression, driven by …


Application Of Machine Learning In Snp Discovery, Lakshmi K. Matukumalli, John J. Grefenstette, David L. Hyten, Ik-Young Choi, Perry B. Cregan, Curtis P. Van Tassell Jan 2006

Application Of Machine Learning In Snp Discovery, Lakshmi K. Matukumalli, John J. Grefenstette, David L. Hyten, Ik-Young Choi, Perry B. Cregan, Curtis P. Van Tassell

Department of Agronomy and Horticulture: Faculty Publications

Background: Single nucleotide polymorphisms (SNP) constitute more than 90% of the genetic variation, and hence can account for most trait differences among individuals in a given species. Polymorphism detection software PolyBayes and PolyPhred give high false positive SNP predictions even with stringent parameter values. We developed a machine learning (ML) method to augment PolyBayes to improve its prediction accuracy. ML methods have also been successfully applied to other bioinformatics problems in predicting genes, promoters, transcription factor binding sites and protein structures. Results: The ML program C4.5 was applied to a set of features in order to build a SNP classifier …


Snp-Phage – High Throughput Snp Discovery Pipeline, Lakshmi K. Matukumalli, John J. Grefenstette, David L. Hyten, Ik-Young Choi, Perry B. Cregan, Curt P. Van Tassell Jan 2006

Snp-Phage – High Throughput Snp Discovery Pipeline, Lakshmi K. Matukumalli, John J. Grefenstette, David L. Hyten, Ik-Young Choi, Perry B. Cregan, Curt P. Van Tassell

Department of Agronomy and Horticulture: Faculty Publications

Background: Single nucleotide polymorphisms (SNPs) as defined here are single base sequence changes or short insertion/deletions between or within individuals of a given species. As a result of their abundance and the availability of high throughput analysis technologies SNP markers have begun to replace other traditional markers such as restriction fragment length polymorphisms (RFLPs), amplified fragment length polymorphisms (AFLPs) and simple sequence repeats (SSRs or microsatellite) markers for fine mapping and association studies in several species. For SNP discovery from chromatogram data, several bioinformatics programs have to be combined to generate an analysis pipeline. Results have to be stored in …


Impacts Of Genetic Bottlenecks On Soybean Genome Diversity, D. L. Hyten, Qijian Song, Youlin Zhu, Ik-Young Choi, Randall L. Nelson, Jose M. Costa, James E. Specht, Randy C. Shoemaker, Perry B. Cregan Jan 2006

Impacts Of Genetic Bottlenecks On Soybean Genome Diversity, D. L. Hyten, Qijian Song, Youlin Zhu, Ik-Young Choi, Randall L. Nelson, Jose M. Costa, James E. Specht, Randy C. Shoemaker, Perry B. Cregan

Department of Agronomy and Horticulture: Faculty Publications

Soybean has undergone several genetic bottlenecks. These include domestication in Asia to produce numerous Asian landraces, introduction of relatively few landraces to North America, and then selective breeding over the past 75 years. It is presumed that these three human-mediated events have reduced genetic diversity. We sequenced 111 fragments from 102 genes in four soybean populations representing the populations before and after genetic bottlenecks. We show that soybean has lost many rare sequence variants and has undergone numerous allele frequency changes throughout its history. Although soybean genetic diversity has been eroded by human selection after domestication, it is notable that …