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1987

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Full-Text Articles in Life Sciences

Ec88-116 Universal Soil Loss Equation: A Handbook For Nebraska Producers, A. J. Jones, D. Walters, W. G. Hance, Elbert C. Dickey, J.R. Culver Dec 1987

Ec88-116 Universal Soil Loss Equation: A Handbook For Nebraska Producers, A. J. Jones, D. Walters, W. G. Hance, Elbert C. Dickey, J.R. Culver

Historical Materials from University of Nebraska-Lincoln Extension

Tons of soil are lost from agricultural fields in Nebraska each year as a result of water erosion. The accelerated loss of topsoil reduces the availability of plant nutrients and water needed for optimum crop production. In addition, the eroded soil frequently moves into surface waters causing sediment to be deposited in streams and reservoirs and nutrients to be released into other biological systems. The purposes of this workbook are to provide an understandng of how soil erosion estimates are determined, to estimate erosion control resulting from numerous cropping systems, and to inform the producer of alternative practices which may ...


Nucleotide Sequence And Characterization Of The Transcript Of A Dictyostelium Ribosomal Protein Gene, Laura F. Steel, A. Smyth, Allan Jacobson Dec 1987

Nucleotide Sequence And Characterization Of The Transcript Of A Dictyostelium Ribosomal Protein Gene, Laura F. Steel, A. Smyth, Allan Jacobson

Open Access Articles

Dictyostelium ribosomal protein mRNAs are subject to developmental regulation of both their translation and their stability. In order to consider whether such post-transcriptional regulation can be attributed to structural features of the mRNAs, we have cloned and sequenced a 1.9 kb EcoRI genomic DNA fragment which contains the gene for the Dictyostelium ribosomal protein 1024 (rp1024). The rp1024 gene contains a single intron of 350 bp which begins just after the fourth codon of protein coding sequence. Transcription begins 11 to 28 bp upstream from the initiator ATG in a pyrimidine rich region which is preceded by an oligo ...


Northeast Research Station Watertown, South Dakota Annual Progress Report, 1987, Agricultural Experiment Station, Plant Science Department Dec 1987

Northeast Research Station Watertown, South Dakota Annual Progress Report, 1987, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1987 annual progress report for the Northeast Research Station in Watertown, South Dakota. This report is issued by the South Dakota Agricultural Experiment Station and the South Dakota State University Plant Science Department. This report includes information on the 1987 crop season, including precipitation data, grain and wheat research and disease control, corn breeding, sunflower breeding, insect control, alfalfa test, oats research, and information on the economics of alternative farming.


Oyster Spatfall In Virginia Rivers: 1987 Annual Summary, James Whitcomb Dec 1987

Oyster Spatfall In Virginia Rivers: 1987 Annual Summary, James Whitcomb

Reports

The Virginia Institute of Marine Science (VIMS) conducts weekly surveys from June through early October to obtain oyster spatfall information. Spat counts are made on oyster shells strung on wire and suspended from stakes on public and private beds. The number of spat on shells is counted each week of the spawning season to determine the potential of a particular area for receiving a strike and to predict the most likely period the strikes will occur.


Bibliography Of Agricultural Climatology: Part Ii, University Of Tennessee Agricultural Experiment Station, Joanne Logan Dec 1987

Bibliography Of Agricultural Climatology: Part Ii, University Of Tennessee Agricultural Experiment Station, Joanne Logan

Research Reports

No abstract provided.


Soil Solution: Documentation, Source Code, And Program Key Version 1.4, University Of Tennessee Agricultural Experiment Station, Jeff Wolt Dec 1987

Soil Solution: Documentation, Source Code, And Program Key Version 1.4, University Of Tennessee Agricultural Experiment Station, Jeff Wolt

Research Reports

No abstract provided.


An Economic Analysis Of The Optimum Number, Sizes And Locations Of Livestock Auction Markets In Tennessee, University Of Tennessee Agricultural Experiment Station, Dan L. Mclemore, Emily A. Mcclain, Emmit L. Rawls Dec 1987

An Economic Analysis Of The Optimum Number, Sizes And Locations Of Livestock Auction Markets In Tennessee, University Of Tennessee Agricultural Experiment Station, Dan L. Mclemore, Emily A. Mcclain, Emmit L. Rawls

Research Reports

No abstract provided.


Soybean Variety Tests, 1987, University Of Tennessee Agricultural Experiment Station, Charles R. Graves, Albert Y. Chambers, Melvin A. Newman Dec 1987

Soybean Variety Tests, 1987, University Of Tennessee Agricultural Experiment Station, Charles R. Graves, Albert Y. Chambers, Melvin A. Newman

Research Reports

No abstract provided.


Book Review- Nebraska Bird Review (December 1987) Dec 1987

Book Review- Nebraska Bird Review (December 1987)

Nebraska Bird Review

A Field Guide to Hawks of North America, William S. Clark. Illustrations by Brian K. Wheeler. 1987. Number 35 in The Peterson Field Guide Series. edited by Roger Tory Peterson. Houghton Mifflin Co., Boston. xii + 198 pp., 24 color plates. 2 black-and-white plates, 241 photographs. 6 figures. 32 maps. ISB N 0- 395-36001 - 3 (hardcover) $19.95, ISBN 0-395-44112-9 (softcover) $13.95.

The softcover is a mere 4.5 x 7.25 inches, and less than 0.75 inches thick, but the wealth of information concerning the field identification of diurnal raptors is enormous. William S. Clark, from Arlington, VA ...


Eskimo Curlew Sighted Dec 1987

Eskimo Curlew Sighted

Nebraska Bird Review

When Craig Faanes, Grand Island, went to the Mormon Island Crane Meadows 16 April 1987 to watch Sandhill Cranes at night he saw a bird that he first took for a Whimbrel. He was familiar with Whimbrels on both coasts, but the more he studied the bird the more he was convinced that the bird was an Eskimo Curlew. After he had gone to the natural history museum at UNL and studied a stuffed Eskimo Curlew be was convinced that that was what he had seen. After the date of this sighting Eskimo Curlews were reported from "the Sabine and ...


Early Fall Migration Of Sedge Wrens, Paul A. Bedell Dec 1987

Early Fall Migration Of Sedge Wrens, Paul A. Bedell

Nebraska Bird Review

Johnsgard (1980) lists the Sedge Wren (Cistothorus platensis) as an uncommon spring and fall migrant in eastern Nebraska, and a rare summer resident in eastern Nebraska, mostly east of a line from Knox to Gage counties. Half of the initial spring records occur between 1 and 12 May, with the latest 3 June. Half of the final fal1 records occur between 11 Sept. and 9 Oct., with the earliest 29 July. This paper presents observations of Sedge Wrens during 1987 in southcentral Nebraska, west of the line.

I found Sedge Wrens to be local1y common in grassy or marshy areas ...


Research Report No. 17, Stand Structure And Yield Of Slash Pine Plantations In East Texas, Update: 1987, J. David Lenhart Dec 1987

Research Report No. 17, Stand Structure And Yield Of Slash Pine Plantations In East Texas, Update: 1987, J. David Lenhart

Informal Project Reports

An updated diameter distribution yield prediction system is Presented for slash pine ( Pinus elliottii Engelm. ) plantations on non-old-fields in East Texas. The new revised system was developed using data from initial measurement ( 1982- 84) and first remeasurement ( 1985-87) of the East Texas Pine Plan tat ion Research Project permanent Plots.


Research Report No. 16, Stand Structure And Yield Of Loblolly Pine Plantations In East Texas, Update: 1987, J. David Lenhart Dec 1987

Research Report No. 16, Stand Structure And Yield Of Loblolly Pine Plantations In East Texas, Update: 1987, J. David Lenhart

Informal Project Reports

An updated diameter distribution yield prediction system is presented for loblolly pine ( Pinus taeda L. ) plantations on non- old-fields in East Texas. The new revised system was developed using data from initial measurement ( 1982-84) and f irst remeasurement ( 1985-87) of the East Texas Pine Plan tat ion Research Project permanent plots.


A New Subspecies Of The Free-Tailed Bat, Molossops Greenhalli, From Western Mexico (Mammalia: Chiroptera), J. Knox Jones Jr., Hugh H. Genoways Dec 1987

A New Subspecies Of The Free-Tailed Bat, Molossops Greenhalli, From Western Mexico (Mammalia: Chiroptera), J. Knox Jones Jr., Hugh H. Genoways

Mammalogy Papers: University of Nebraska State Museum

In June of 1964, field parties from the Museum of Natural History, the University of Kansas, collected two specimens of a unique free-tailed bat in Mexico, one in the state of Guerrero and the other in Oaxaca. These proved to be the first specimens of Molossops greenhalli taken outside of Trinidad and the first bats of the genus to be reported from north of Panama. Subsequently, Percy L. Clifton obtained, in the state of Jalisco, three more individuals of M. greenhalli, including the first male from the North American mainland.

Comparison with material from Trinidad indicates that the Mexican bats ...


Southeast South Dakota Experiment Farm Annual Progress Report, 1987, Agricultural Experiment Station Dec 1987

Southeast South Dakota Experiment Farm Annual Progress Report, 1987, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This twenty-seventh annual report of the research program at the Southeast South Dakota Experiment Farm has special significance for those engaged in agriculture and the agriculturally related businesses in the nine county area of southeast South Dakota. Reports in this document include information on: temperatures and precipitation data, corn production and performance, soybean research and planting, soil testing, fertilizer testing, herbicide research, crop rotation, sorghum, small grains, livestock research, and pest and weed control.


Obstructing Giant Pseudopolyposis Of The Colon In Ulcerative Colitis, Roberta E. Sonnino, Farouck N. Obeid Dec 1987

Obstructing Giant Pseudopolyposis Of The Colon In Ulcerative Colitis, Roberta E. Sonnino, Farouck N. Obeid

Henry Ford Hospital Medical Journal

Pseudopolyposis of the colon is a well-recognized local complication of ulcerative colitis. Giant pseudopolyposis is uncommon, and its presentation as a complete obstruction of the colon is a rare occurrence. We report such a case, where retrograde flow of barium on double-contrast barium enema was completely obstructed at midtransverse colon. After resection by total abdominal colectomy, pathology examination ofthe specimen confirmed massive pseudopolyposis without malignancy. A brief review of the pathology and current literature is presented.


Naltrexone Does Not Affect Adrenal Steroidogenesis In Women With Hirsutism/Oligomenorrhea, Jeffrey A. Jackson, Thomas J. Wincek, Jose F. Pliego Dec 1987

Naltrexone Does Not Affect Adrenal Steroidogenesis In Women With Hirsutism/Oligomenorrhea, Jeffrey A. Jackson, Thomas J. Wincek, Jose F. Pliego

Henry Ford Hospital Medical Journal

We studied the effects of the oral opiate receptor antagonist naltrexone on basal and ACTH-stimulated adrenal steroid levels in six women with hirsutism/oligomenorrhea and preexisting elevation of serum dehydroepiandrosterone sulfate. One of the six patients met the criteria for partial 3-β-hydroxysteroid dehydrogenase deficiency. No statistical differences were detected in steroid levels or ratios before and after 14 days of 50 mg/day of naltrexone. Thus, we find no support for the hypothesis that opioid peptides acting through opiate receptors (predominantly μ subtype) modulate the abnormal adrenal androgen secretion seen in these women with hirsutism/oligomenorrhea.


Diet-Selection Ecology Of Tropically And Temperately Adapted Honey Bees, Robert G. Danka, Richard L. Hellmich, Thomas E. Rinderer, Anita M. Collins Dec 1987

Diet-Selection Ecology Of Tropically And Temperately Adapted Honey Bees, Robert G. Danka, Richard L. Hellmich, Thomas E. Rinderer, Anita M. Collins

Richard L Hellmich

Colonies of tropically adapted (Africanized) honey bees had greater numbers and higher percentages of pollen foragers than did temperately adapted (European) honey bees. European colonies had greater overall foraging activity. The number of pollen gatherers in Africanized nests was greater throughout the daily foraging cycle, and was especially high early in the morning when pollen was most abundant. Africanized colonies fielded more pollen collectors even when levels of stimuli which are known to regulate pollen foraging were altered experimentally. Collectively, the foraging patterns resulted in larger stores of pollen in Africanized honey bee nests, while European bee nests typically had ...


Factors Affecting Frost Damage To Wheat In Western Australia, S P. Loss Dec 1987

Factors Affecting Frost Damage To Wheat In Western Australia, S P. Loss

Division of Plant Research : Technical Report Series

It may at first seem strange that precious research funds are being channelled into a project concerned with frost damage in a country where high temperatures and moisture stress limit the growth of plants for a large portion of the year. But cereal crops are only grown in the temperate zones of the continent during winter and spring when they may be exposed to low diurnal temperatures. In many areas cold damage is irregular and rare,however it limits yields not only by causing actual damage but also by restricting the most effective period for flowering. For muck of the ...


Disease And Insect Resistance Screening Of The National Subterranean Clover Collection, D J. Gillespie, M J. Barbetti Dec 1987

Disease And Insect Resistance Screening Of The National Subterranean Clover Collection, D J. Gillespie, M J. Barbetti

Division of Plant Research : Technical Report Series

This project commenced in May 1981 primarily to identify sources of resistance to clover scorch (Kabatiella caulivora), root rots (Pythium, Fusarium and Rhizoctonia spp.), and bluegreen aphid (Acyrthospihon kondoi) in the National Subterranean Clover Collection. Screening for resistance to red legged earthmite (Halotydeus destructor) was initiated part way through the project. Since commencement approximately 5,250 introductions and crossbred clover shave been tested for resistance to clover scorch, 420 for resistance to rootrots, 690 for resistance to blue green aphid and 160 for resistance to redlegged earth mite (R.L.E.M.). A large number of clovers possessing resistance to ...


The 1987 Iowa Corn Yield Test Report, District 5, K.E. Ziegler Dec 1987

The 1987 Iowa Corn Yield Test Report, District 5, K.E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting corn hybrids. This is the sixty-eighth consecutive year for the test. The presentation of data for the hybrids tested does not imply approval or endorsement by the authors or by the agencies sponsoring or conducting the test. Entries in tables I and 2 are designated by brand name and variety.


The 1987 Iowa Corn Yield Test Report, District 4, K.E. Ziegler Dec 1987

The 1987 Iowa Corn Yield Test Report, District 4, K.E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com hybrids . This is the sixty-eighth consecutive year for the test. The presentation of data for the hybrids tested does not imply approval or endorsement by the authors or by the agencies sponsoring or conducting the test. Entries in tables land 2 are designated by brand name and variety.


The 1987 Iowa Corn Yield Test Report, District 1, K.E. Ziegler Dec 1987

The 1987 Iowa Corn Yield Test Report, District 1, K.E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com hybrids. This is the sixty-eighth consecutive year for the test. The presentation of data for the hybrids tested does not imply approval or endorsement by the authors or by the agencies sponsoring or conducting the test. Entries in tables I and 2 are designated by brand name and variety.


The 1987 Iowa Corn Yield Test Report, District 2, K.E. Ziegler Dec 1987

The 1987 Iowa Corn Yield Test Report, District 2, K.E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com hybrids. This is the sixty-eighth consecutive year for the test. The presentation of data for the hybrids tested does not imply approval or endorsement by the authors or by the agencies sponsoring or conducting the test. Entries in tables land 2 are designated by brand name and variety.


The 1987 Iowa Corn Yield Test Report, District 7, K.E. Ziegler Dec 1987

The 1987 Iowa Corn Yield Test Report, District 7, K.E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Corn Yield Test are published to aid Iowa farmers in selecting corn hybrids . This is the sixty-eighth consecutive year for the test. The presentation of data for the hybrids tested does not imply approval or endorsement by the authors or by the agencies sponsoring or conducting the test. Entries in tables 1 and 2 are designated by brand name and variety.


The 1987 Iowa Corn Yield Test Report, District, 6, K.E. Ziegler Dec 1987

The 1987 Iowa Corn Yield Test Report, District, 6, K.E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com hybrids. This is the sixty-eighth consecutive year for the test. The presentation of data for the hybrids tested does not imply approval or endorsement by the authors or by the agencies sponsoring or conducting the test. Entries in tables 1 and 2 are designated by brand name and variety.


The 1987 Iowa Corn Yield Test Report, District 3, K.E. Ziegler Dec 1987

The 1987 Iowa Corn Yield Test Report, District 3, K.E. Ziegler

Iowa Corn Yield Tests

Results of the Iowa Corn Yield Test are published to aid Iowa farmers in selecting corn hybrids . This is the sixty-eighth consecutive year for the test . The presentation of data for the hybrids tested does not imply approval or endorsement by the authors or by the agencies sponsoring or conducting the test. Entries in tables 1 and 2 are designated by brand name and variety.


Isolation And Identification Of The Major Component Of Setal Exudate From Corythucha Ciliate, William Lusby, James Oliver, John W. Neal Jr., Robert Heath Dec 1987

Isolation And Identification Of The Major Component Of Setal Exudate From Corythucha Ciliate, William Lusby, James Oliver, John W. Neal Jr., Robert Heath

Publications from USDA-ARS / UNL Faculty

Clear microdroplets are associated with secretory, abdominal setae on nymphs of the sycamore lace bug Corythucha ciliata. The major component of this exudate material has been identified as 3,6-dihydroxy-2-[1-oxo- lO(E)-terradecenyl]cyclohex-2-en- 1-one [1]. Preliminary observations of these insects suggest a defensive function for these exudate droplets.


1987 Fall Field Day Dec 1987

1987 Fall Field Day

Nebraska Bird Review

The weather was bright and clear for the 75 people who attended some part of the 1987 Fall Field Day at the 4-H Camp at Halsey National Forest 3 and 4 October. It was nice to have Mrs. Gross, who broke her leg at the Valentine meeting, among those attending. Her leg was progressing according to schedule, although she still used a crutch, There was the usual slide show Saturday night, the rest of the time was for birding, including banding. The Executive Board decided to have the terms of members of the Records Committee start and expire with the ...


Notes- Nebraska Bird Review (December 1987), Charles Lesick Sr., Graham Chisholm, Bill Garthright, John Row, R. G. Cortelyou Dec 1987

Notes- Nebraska Bird Review (December 1987), Charles Lesick Sr., Graham Chisholm, Bill Garthright, John Row, R. G. Cortelyou

Nebraska Bird Review

YELLOW RAILS. On 21 September 1986, while conducting a waterfowl survey on the Jack Senn WMA, near Ceresco, Lancaster Co., I flushed a small rail-like bird, which flew a short distance before landing in heavy grass. Although its flight was very similar to the Virginia Rail and the Sora, which I was accustomed to seeing, the light color and white wing patches were very distinctive. Later I checked a field guide and found that the description most closely matching this bird was that of the very secretive Yellow Rail.

I had planned to do some rail and snipe hunting the ...