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2004

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Articles 31 - 60 of 3411

Full-Text Articles in Life Sciences

Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 2, Robert E. Woodruff, Milton W. Sanderson Dec 2004

Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 2, Robert E. Woodruff, Milton W. Sanderson

Insecta Mundi

With this study, the fauna of Hispaniolan Phyllophaga is now composed of 48 species, all of which are endemic (precinctive), including 22 new species described herein (4 attributed to Woodruff and Sanderson: approxima, bonfils, jimenezi, rex; 18 to Woodruff: aceitillar, alcoa, androw, baoruco, carnegie, davidsoni, eladio, haitiensis, jaragua, larimar, marcano, nunezi, ortizi, pedernales, rawlinsi, rustica, santachloe, toni). Additionally, allotypes are described for 7 species with previously unknown males (aliada, canoa) or females (esquinada, fossoria, imprima, kenscoffi, panicula), and 6 new country records (Dominican Republic) are provided (aliada, leptospica, minutissima, panicula, permagna, recorta). Of the 48, only 1 male remains unknown ...


Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 1, Robert E. Woodruff, Milton W. Sanderson Dec 2004

Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 1, Robert E. Woodruff, Milton W. Sanderson

Insecta Mundi

With this study, the fauna of Hispaniolan Phyllophaga is now composed of 48 species, all of which are endemic (precinctive), including 22 new species described herein (4 attributed to Woodruff and Sanderson: approxima, bonfils, jimenezi, rex; 18 to Woodruff: aceitillar, alcoa, androw, baoruco, carnegie, davidsoni, eladio, haitiensis, jaragua, larimar, marcano, nunezi, ortizi, pedernales, rawlinsi, rustica, santachloe, toni). Additionally, allotypes are described for 7 species with previously unknown males (aliada, canoa) or females (esquinada, fossoria, imprima, kenscoffi, panicula), and 6 new country records (Dominican Republic) are provided (aliada, leptospica, minutissima, panicula, permagna, recorta). Of the 48, only 1 male remains unknown ...


Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 5, Robert E. Woodruff, Milton W. Sanderson Dec 2004

Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 5, Robert E. Woodruff, Milton W. Sanderson

Insecta Mundi

With this study, the fauna of Hispaniolan Phyllophaga is now composed of 48 species, all of which are endemic (precinctive), including 22 new species described herein (4 attributed to Woodruff and Sanderson: approxima, bonfils, jimenezi, rex; 18 to Woodruff: aceitillar, alcoa, androw, baoruco, carnegie, davidsoni, eladio, haitiensis, jaragua, larimar, marcano, nunezi, ortizi, pedernales, rawlinsi, rustica, santachloe, toni). Additionally, allotypes are described for 7 species with previously unknown males (aliada, canoa) or females (esquinada, fossoria, imprima, kenscoffi, panicula), and 6 new country records (Dominican Republic) are provided (aliada, leptospica, minutissima, panicula, permagna, recorta). Of the 48, only 1 male remains unknown ...


Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 3, Robert E. Woodruff, Milton W. Sanderson Dec 2004

Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 3, Robert E. Woodruff, Milton W. Sanderson

Insecta Mundi

With this study, the fauna of Hispaniolan Phyllophaga is now composed of 48 species, all of which are endemic (precinctive), including 22 new species described herein (4 attributed to Woodruff and Sanderson: approxima, bonfils, jimenezi, rex; 18 to Woodruff: aceitillar, alcoa, androw, baoruco, carnegie, davidsoni, eladio, haitiensis, jaragua, larimar, marcano, nunezi, ortizi, pedernales, rawlinsi, rustica, santachloe, toni). Additionally, allotypes are described for 7 species with previously unknown males (aliada, canoa) or females (esquinada, fossoria, imprima, kenscoffi, panicula), and 6 new country records (Dominican Republic) are provided (aliada, leptospica, minutissima, panicula, permagna, recorta). Of the 48, only 1 male remains unknown ...


Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 4, Robert E. Woodruff, Milton W. Sanderson Dec 2004

Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 4, Robert E. Woodruff, Milton W. Sanderson

Insecta Mundi

With this study, the fauna of Hispaniolan Phyllophaga is now composed of 48 species, all of which are endemic (precinctive), including 22 new species described herein (4 attributed to Woodruff and Sanderson: approxima, bonfils, jimenezi, rex; 18 to Woodruff: aceitillar, alcoa, androw, baoruco, carnegie, davidsoni, eladio, haitiensis, jaragua, larimar, marcano, nunezi, ortizi, pedernales, rawlinsi, rustica, santachloe, toni). Additionally, allotypes are described for 7 species with previously unknown males (aliada, canoa) or females (esquinada, fossoria, imprima, kenscoffi, panicula), and 6 new country records (Dominican Republic) are provided (aliada, leptospica, minutissima, panicula, permagna, recorta). Of the 48, only 1 male remains unknown ...


Cases, Regulations, And Statutes, Robert P. Achenbach Jr Dec 2004

Cases, Regulations, And Statutes, Robert P. Achenbach Jr

Agricultural Law Digest

No abstract provided.


Index To Volume 15, Nos. 1-24, Agricultural Law Digest Dec 2004

Index To Volume 15, Nos. 1-24, Agricultural Law Digest

Agricultural Law Digest

No abstract provided.


New Limits On “Reverse” Like-Kind Exchanges, Neil E. Harl Dec 2004

New Limits On “Reverse” Like-Kind Exchanges, Neil E. Harl

Agricultural Law Digest

In 2000, the Internal Revenue Service announced a safe harbor for “reverse” like-kind exchanges of eligible property.1 On July 20, 2004, the IRS narrowed the scope of the safe harbor created in 2000.2


Multiple Testing Procedures: R Multtest Package And Applications To Genomics, Katherine S. Pollard, Sandrine Dudoit, Mark J. Van Der Laan Dec 2004

Multiple Testing Procedures: R Multtest Package And Applications To Genomics, Katherine S. Pollard, Sandrine Dudoit, Mark J. Van Der Laan

U.C. Berkeley Division of Biostatistics Working Paper Series

The Bioconductor R package multtest implements widely applicable resampling-based single-step and stepwise multiple testing procedures (MTP) for controlling a broad class of Type I error rates, in testing problems involving general data generating distributions (with arbitrary dependence structures among variables), null hypotheses, and test statistics. The current version of multtest provides MTPs for tests concerning means, differences in means, and regression parameters in linear and Cox proportional hazards models. Procedures are provided to control Type I error rates defined as tail probabilities for arbitrary functions of the numbers of false positives and rejected hypotheses. These error rates include tail probabilities ...


Lhx9 And Lhx9alpha: Differential Biochemical Properties And Effects On Neuronal Differentiation, Bertrand Molle, Stephane Pere, Vieri Failli, Ingolf Bach, Sylvie Retaux Dec 2004

Lhx9 And Lhx9alpha: Differential Biochemical Properties And Effects On Neuronal Differentiation, Bertrand Molle, Stephane Pere, Vieri Failli, Ingolf Bach, Sylvie Retaux

Program in Gene Function and Expression Publications and Presentations

The Lhx9 LIM-homeodomain transcription factor and its truncated isoform Lhx9alpha are generated by alternative splicing of the Lhx9 gene. Here we investigated the differential functional properties of these two isoforms. Lhx9alpha, which lacks parts of the homeodomain, was unable to bind DNA in EMSA experiments, but was able to associate with CLIM cofactors in GST pull-down assays. In transfection experiments in PC12 cells, Lhx9alpha fusion constructs systematically showed a nuclear localization, as opposed to Lhx9 fusion constructs, which also localized to the cytoplasm. Moreover, Lhx9 increased NGF-induced neuronal differentiation of PC12 cells. Lhx9alpha, on the other hand, did not significantly ...


Plag1 And Plagl2 Are Oncogenes That Induce Acute Myeloid Leukemia In Cooperation With Cbfb-Myh11, Sean F. Landrette, Ya-Huei Kuo, Karen Hensen, Sahar Barjesteh Van Waalwijk Van Doorn-Khosrovani, Paola N. Perrat, Wim J. M. Van De Ven, Ruud Delwel, Lucio H. Castilla Dec 2004

Plag1 And Plagl2 Are Oncogenes That Induce Acute Myeloid Leukemia In Cooperation With Cbfb-Myh11, Sean F. Landrette, Ya-Huei Kuo, Karen Hensen, Sahar Barjesteh Van Waalwijk Van Doorn-Khosrovani, Paola N. Perrat, Wim J. M. Van De Ven, Ruud Delwel, Lucio H. Castilla

Open Access Articles

Recurrent chromosomal rearrangements are associated with the development of acute myeloid leukemia (AML). The frequent inversion of chromosome 16 creates the CBFB-MYH11 fusion gene that encodes the fusion protein CBFbeta-SMMHC. This fusion protein inhibits the core-binding factor (CBF), resulting in a block of hematopoietic differentiation, and induces leukemia upon the acquisition of additional mutations. A recent genetic screen identified Plag1 and Plagl2 as CBF beta-SMMHC candidate cooperating proteins. In this study, we demonstrate that Plag1 and Plagl2 independently cooperate with CBF beta-SMMHC in vivo to efficiently trigger leukemia with short latency in the mouse. In addition, Plag1 and Plagl2 increased ...


Allele Specific Synthetic Lethality Between Pric And Dnaats Alleles At The Permissive Temperature Of 30°C In E. Coli K-12, Steven Sandler, Tania Hinds Dec 2004

Allele Specific Synthetic Lethality Between Pric And Dnaats Alleles At The Permissive Temperature Of 30°C In E. Coli K-12, Steven Sandler, Tania Hinds

Steven Sandler

Background DnaA is an essential protein in the regulation and initiation of DNA replication in many bacteria. It forms a protein-DNA complex at oriC to which DnaC loads DnaB. DNA replication forks initiated at oriC by DnaA can collapse on route to the terminus for a variety of reasons. PriA, PriB, PriC, DnaT, Rep and DnaC form multiple pathways to restart repaired replication forks. DnaC809 and dnaC809,820 are suppressors of priA2::kan mutant phenotypes. The former requires PriC and Rep while the latter is independent of them. RnhA339::cat mutations allow DnaA-independent initiation of DNA replication. Results It is ...


Distance Between Pollen Donor And Recipient Influences Fruiting Success In Slickspot Peppergrass, Lepidium Papilliferum, Ian C. Robertson, Amy C. Ulappa Dec 2004

Distance Between Pollen Donor And Recipient Influences Fruiting Success In Slickspot Peppergrass, Lepidium Papilliferum, Ian C. Robertson, Amy C. Ulappa

Biology Faculty Publications and Presentations

Plant populations are often spatially structured owing to limited dispersal of pollen and seed. Mating between neighboring individuals in such populations often leads to reduced reproductive performance relative to matings between distant individuals. This response, which may be a result of inbreeding depression or prezygotic mating barriers, was investigated for slickspot peppergrass, Lepidium papilliferum L. (Brassicaceae), a rare insect-pollinated mustard endemic to sagebrush–steppe habitat in southwestern Idaho. Through hand pollination experiments we found that individual plants receiving pollen from distant sources (75–100 m and 6.5–20 km away) had significantly higher percent fruit sets than those relying ...


Knowing The Risk Of Soybean Rust By Comparison With Brazil, X. B. Yang, Emerson M. Del Ponte, Ana Paula Dias Dec 2004

Knowing The Risk Of Soybean Rust By Comparison With Brazil, X. B. Yang, Emerson M. Del Ponte, Ana Paula Dias

Integrated Crop Management News

One of the common questions we receive is whether to move away from soybean because of the risk of soybean rust (SBR). Although studies indicate that the U.S. soybean production region is suitable to this disease, many experts believe outbreaks of the disease are likely to be sporadic.


Isu Introduces The Corn And Soybean Initiative, Brian Gene Meyer Dec 2004

Isu Introduces The Corn And Soybean Initiative, Brian Gene Meyer

Integrated Crop Management News

The Corn and Soybean Initiative is a new effort at Iowa State University to better serve the needs of Iowa's number-one-in-the-nation corn and soybean growers. "Iowa has the best crop producers in the country and they just keep getting better," said Greg Tylka, coordinator of the initiative and a professor of plant pathology. "Iowa State's Corn and Soybean Initiative will work to make sure that trend continues by providing a central access point for research-based production information and education.


Workshop In Using Living Mulch Systems For Grain Crop Production, Palle Pedersen, Jodee Roland Dec 2004

Workshop In Using Living Mulch Systems For Grain Crop Production, Palle Pedersen, Jodee Roland

Integrated Crop Management News

Incorporation of perennial legumes and cover crops into our row cropping systems and reduction of tillage will reduce soil erosion and concurrent loss of phosphorous and nitrogen to the surface water. Kura clover (Trifolium ambiguum) is a relatively new forage legume in North America that can be used in a living mulch system. It has an excellent forage yield and is persistent under a wide range of soil and climatic environments. Iowa Department of Agriculture and Land Stewardship, and Integrated Farm/Livestock Management Demonstration Program, with the assistance of Iowa State University Extension, are currently funding a large on-farm demonstration ...


Commercial Pesticide Applicator Training Sessions For Spring 2005, James A. Fawcett, Virgil L. Schmitt Dec 2004

Commercial Pesticide Applicator Training Sessions For Spring 2005, James A. Fawcett, Virgil L. Schmitt

Integrated Crop Management News

With the arrival of Asian soybean rust in this country, many commercial applicators are adding agricultural diseases (category 1C) to their certification so that they can apply fungicides. Most agricultural commercial applicators are certified in Ag Weeds (category 1A), and many are certified in Ag Insects (category 1B), but not very many are certified in Ag Diseases (category 1C).


Translational Regulation Of Gene Expression, Stephanie Kervestin, Nadia Amrani Dec 2004

Translational Regulation Of Gene Expression, Stephanie Kervestin, Nadia Amrani

Open Access Articles

A report on the Cold Spring Harbor Laboratory meeting 'Translational Control', Cold Spring Harbor, USA, 7-12 September 2004.


Small Grains: 2005 Variety Recommendations (2004 Crop Performance Results), Cooperative Extension Service, South Dakota State University Dec 2004

Small Grains: 2005 Variety Recommendations (2004 Crop Performance Results), Cooperative Extension Service, South Dakota State University

SDSU Extension Circulars

Variety selection is a fundamental element in a sound crop production program. This report contains variety recommendations, descriptions, and yield data for the spring-seeded small grains – hard red spring wheat, oat, and barley, along with the fall-seeded small grain –hard red winter wheat. Key factors in variety selection include yield, yield stability, maturity, straw strength, height, test weight, quality, and disease resistance. Yield is an important factor; however, a variety with good disease resistance, straw strength, and high grain quality may be more profitable in some cases than the highest yielding variety. Disease resistance information is based on reactions to ...


The Phosphorus Index, U.S. Department Of Agriculture Dec 2004

The Phosphorus Index, U.S. Department Of Agriculture

Proceedings of the Integrated Crop Management Conference

The Phosphorus Index is a tool used to assess the potential for phosphorus (P) to move from agricultural fields to surface water. It uses an integrated approach that considers soil and landscape features as well as soil conservation and P management practices in individual fields. These characteristics include source factors such as soil test P; total soil P; rate, method, and timing of P application from commercial fertilizer, manure, and other organic sources; and erosion. Transport factors include sediment delivery, relative field location in the watershed, soil conservation practices, precipitation, runoff, and tile flow/subsurface drainage. Erosion, runoff and drainage ...


Marketing Opportunities For Organic And Non-Gmo Crops, Kathleen Delate, Robert Turnbull, Jerry Dewitt Dec 2004

Marketing Opportunities For Organic And Non-Gmo Crops, Kathleen Delate, Robert Turnbull, Jerry Dewitt

Proceedings of the Integrated Crop Management Conference

According to the USDA Economic Research Service, Iowa ranks fifth in the U.S. in terms of organic production acres (USDA-ERS, 2004). The U.S. organic industry continues to grow at a rate of 20% annually (OTA, 2004) and is currently a $13 billion industry. Projected growth puts U.S. organic sales at $20 billion by 2006. There were approximately 100,000 acres of organic production reported to the Iowa Department of Agriculture and Land Stewardship (IDALS, 2003). This figure reflects only acreage reported by those farmers who returned their survey; thus, more acres are believed to go unreported. This ...


With High Fertilizer Prices Is It Business As Usual Or Should Fertilization Practices Change?, John E. Sawyer Dec 2004

With High Fertilizer Prices Is It Business As Usual Or Should Fertilization Practices Change?, John E. Sawyer

Proceedings of the Integrated Crop Management Conference

After the spike in natural gas price in the winter of 2000-2001 the price of natural gas and N fertilizers have fluctuated, but remained above previous historic levels. Seasonal trends have also resulted in both N product availability and high cost issues, including this fall. Recently, similar problems have hit phosphate and potash fertilizers where world demand and production problems (hurricanes affecting phosphate production in Florida) have negatively affected product price and supply in the United States. With these trends, are there fertilizer use practices that should change, or does crop response to fertilization pay no matter the cost? Crop ...


Iron Deficiency Chlorosis: Management For Hot Spots And Whole Fields, Seth Naeve Dec 2004

Iron Deficiency Chlorosis: Management For Hot Spots And Whole Fields, Seth Naeve

Proceedings of the Integrated Crop Management Conference

Iron Deficiency Chlorosis impacts soybean yields primarily in the Western Corn Belt. Iron Deficiency Chlorosis (more commonly iron chlorosis) is a complex plant disorder that is driven primarily by a nutrient deficiency (iron), usually manifested where soil pH is greater than 7.5. Although Midwestern soils are abundant in iron, higher pH soils cause iron to be in a form that is less available to plants, i.e. it cannot be absorbed. Iron chlorosis, however, does not occur in all high pH soils. A multitude of other soil factors interact to impact iron chlorosis in soybean. Soil chemical properties such ...


Soybean Aphid Management Update: What To Select From A Variety Of Pest Management Tools?, Matt O'Neal, Kevin Johnson Dec 2004

Soybean Aphid Management Update: What To Select From A Variety Of Pest Management Tools?, Matt O'Neal, Kevin Johnson

Proceedings of the Integrated Crop Management Conference

Soybean aphid experience in Iowa: Like most of the Midwest, Iowa soybean growers were introduced to a new pest when the soybean aphid, Aphis glycines Matsumura (Homoptera: Aphididae), arrived in 2000. And like many other states, Iowa has experienced large populations of aphids (>2,000/plant) in two of the past five years that the aphid has been in the state (Lang 2003, M. O'Neal unpublished). Although not well understood, there is an apparent oscillation in aphid populations between years with large populations occurring in 2001 and 2003, and low populations (<500 aphids per plant) occurring in 2002 and 2004.


Do We Really Need To Inoculate Our Fields?, Palle Pedersen Dec 2004

Do We Really Need To Inoculate Our Fields?, Palle Pedersen

Proceedings of the Integrated Crop Management Conference

Currently, there is a lot of interest in soybean seed inoculation. Several new products have entered the market and created a renewed interest in seed inoculation even on fields that have a history of soybean production. As a result of this renewed interest and the lack of information from Iowa, a soybean inoculant evaluation trial was initiated this year in Iowa to evaluate these products. Our objective was to determine if we need to adjust our current recommendations when using inoculants. Twelve different inoculants were tested at two locations (Ames and Vincent) in Iowa. Averaged across locations, none of the ...


Renewed Interest In Foliar Fungicide Use On Field Crops, Laura E. Sweets Dec 2004

Renewed Interest In Foliar Fungicide Use On Field Crops, Laura E. Sweets

Proceedings of the Integrated Crop Management Conference

Although the use of chemicals or fungicides to control plant diseases can be traced back as far as 1000 B.C., it was not until the 1930's- 1960's that substantial efforts were devoted to the development of non-corrosive and non-phytotoxic fungicides. Among the first of the "modern" fungicides were the dithiocarbamate fungicides such as thiram, maneb, and zineb. These materials have broad-spectrum activity but are contact, protectant fungicides. Dithiocarbamate fungicides were used for control of field crop diseases and there still are several formulations labeled for use on field crops. Their use has declined because they are protectants ...


Poulty Manure Impacts On Water Quality, Melissa R. Cheatham, R. S. Kanwar, J. Lorimor, H. Xin, C. Pedersen Dec 2004

Poulty Manure Impacts On Water Quality, Melissa R. Cheatham, R. S. Kanwar, J. Lorimor, H. Xin, C. Pedersen

Proceedings of the Integrated Crop Management Conference

Iowa's egg industry continues to grow each year. In 2001, Iowa became the number one egg producing state in the US, producing 8.69 billion eggs (USDA, 2003; USDA 2002). Iowa broke its record the following year producing 10.1 billion eggs which it topped again in 2003 producing 10.1 billion eggs, thus maintaining its position as number one egg producing state in the US (USDA, 2003; USDA, 2004). With this success comes the added weight of maintaining this status, as well as, managing for all the manure that is generated by being the number one producer. Poultry ...


Ecology And Management Of Diseases Of Soybean That Occurred In Iowa During The 2004 Season. Part Ii: Stem And Root Diseases, Alison Robertson, X. B. Yang Dec 2004

Ecology And Management Of Diseases Of Soybean That Occurred In Iowa During The 2004 Season. Part Ii: Stem And Root Diseases, Alison Robertson, X. B. Yang

Proceedings of the Integrated Crop Management Conference

The 2004 season growing season had cooler than normal temperatures associated with frequent rainfalls. The weather conditions were favorable for the occurrence of many soybean diseases. This season, we saw the worst ever outbreaks of white mold and sudden death syndrome, which resulted in considerable damage for many soybean producers. Both diseases were reported in two-to-three weeks earlier in the growing season than usual. Severe white mold outbreaks were found in eastern Iowa, especially from Interstate 80 north. Our quick-and-dirty survey indicates about 20% of soybean fields were affected with white mold in that region, and some fields were up ...


Pesticide Use And Water Quality, Rich Pope, Mary Skopec, Jim Ellerhoff Dec 2004

Pesticide Use And Water Quality, Rich Pope, Mary Skopec, Jim Ellerhoff

Proceedings of the Integrated Crop Management Conference

Understanding use rates and use patterns of pesticides is valuable to the agricultural industry for manufacturers, registrants, regulatory agencies, environmental interests and pesticide end-users. There are several sources of data, including surveys of pesticide users, monitoring of pesticide detections in the environment, and indirect measures including tracking pesticide sales. The Iowa Groundwater Protection Act of 1987 directed the Iowa Department of Agriculture and Land Stewardship (IDALS) to collect pesticide sales data from pesticide dealers. The dollar sales data, which is confidential business information, is being used to calculate approximate pounds of active ingredients for pesticides which might impact surface or ...


Helping Your Livestock Clients Meet Dnr's New Mmp And Phosphorus Requirements, Jeremy Klatt Dec 2004

Helping Your Livestock Clients Meet Dnr's New Mmp And Phosphorus Requirements, Jeremy Klatt

Proceedings of the Integrated Crop Management Conference

The DNR recently revised its manure management plan (MMP) content requirements to implement the phosphorus (P) index for determination of application rates as required by Iowa law. This presentation will help you assist your clients who are required by state law to have an MMP confinement animal feeding operations with more than 500 animal units.