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

Digital Commons Network™

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

South Dakota State University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 1981 - 2010 of 3639

Full-Text Articles in Entire DC Network

Forage Nitrate Poisoning (A Summary), Cooperative Extension South Dakota State University Jan 1988

Forage Nitrate Poisoning (A Summary), Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

Occasionally forages accumulate nitrates in quantities that are toxic to some farm animals. As long ago as 1895, the literature reported cases of this. In the 1930's heavy cattle losses from what was then termed "oat hay poisoning" were reported in the Great Plains and Rocky Mountain areas. These losses were found to result from the high nitrate content of the hay. It has now been well established that several forage plants and weeds accumulate nitrates in toxic amounts under certain soil and environmental conditions.

Go to article

Hard Water : Occurrence, Health Effects, And Consumer Drinking Practices In Brookings And Sioux Falls, South Dakota, Hock Chin Wong Jan 1988

Hard Water : Occurrence, Health Effects, And Consumer Drinking Practices In Brookings And Sioux Falls, South Dakota, Hock Chin Wong

Electronic Theses and Dissertations

In light of the probable benefits of drinking hard water, it would be anticipated that wherever hard water is available, dwellings would be plumbed to provide this water to the drinking tap. However, casual surveys in certain South Dakota communities had revealed that the plumbing is arranged in some dwellings so that drinking water available at the tap has been subjected to on-site softening. As a result, the water consumer has not only been deprived of the benefits of drinking hard water, but also subjected to the health hazards of drinking high-sodium water from ion­exchange softeners. The primary objective of …

Go to article

Reproductive Performance Of Anestrous Crossbred Ewes Subjected To Artificial Photoperiod Or Melatonin, Kelly Ann Weiskircher Jan 1988

Reproductive Performance Of Anestrous Crossbred Ewes Subjected To Artificial Photoperiod Or Melatonin, Kelly Ann Weiskircher

Electronic Theses and Dissertations

Sheep are seasonal breeders exhibiting estrus in the fall with the decreasing daylength. This characteristic limits the reproductive performance of the ewe. With the decreasing daylength, melatonin is produced by the pineal gland. This hormone is thought to trigger the onset of estral activity. The study herein attempted to alter this seasonal fertility pattern by subjecting ewes to artificial photoperiod and through the oral administration of melatonin and a melatonin ear implant. The lambs in this experiment were born during late fall which is more favorable than the normal lambing season for the survival rate and growth performance of the …

Go to article

Production Of Triploid Rainbow Trout For Evaluation In South Dakota Waters, Jeff C. Dillon Jan 1988

Production Of Triploid Rainbow Trout For Evaluation In South Dakota Waters, Jeff C. Dillon

Electronic Theses and Dissertations

In September 1986, approximately 50,000 rainbow trout (Salmo gairdneri) eggs were fertilized and subjected to heat shocks to prevent expulsion of the second polar body, theoretically resulting in triploid embryos. Heat shocks were at 26 and 28°c, began 10, 20, 30, or 40 min after fertilization, and lasted for 10 or 20 min for a total of 16 treatments. Another 25,000 eggs served as controls and were handled identically but at a normal water temperature of 12°c. Cumulative hatching rates for eggs that were heat-shocked at 26 and 28° were 64 and 50%, respectively, compared to control eggs which had …

Go to article

The Effect Of Application Variables On Tank Mixtures Of Quizalofop And Bentazon, Eirc L. Larson Jan 1988

The Effect Of Application Variables On Tank Mixtures Of Quizalofop And Bentazon, Eirc L. Larson

Electronic Theses and Dissertations

Selective herbicides are highly specific chemicals. They must control weeds at rates which do not injure crops, they must leave no residue in the soil to injure succeeding crops, and they must leave no hazardous residue on crops. It has been extremely difficult for researchers to develop selective herbicides that adequately meet all of these goals. For example, an ideal herbicide spray effectively controls grass and broadleaf weeds simultaneously. Therefore, when farmers are plagued with a variety of weeds including both annual grasses and broadleaf weeds, there is seldom a single economical herbicide available that will completely control the weed …

Go to article

The Effect Of Participation In A Wellness Program On Cardiovascular Function And Self-Concept In Middle Aged Men And Women, Marvin R. Jones Jan 1988

The Effect Of Participation In A Wellness Program On Cardiovascular Function And Self-Concept In Middle Aged Men And Women, Marvin R. Jones

Electronic Theses and Dissertations

The purpose of this study was to examine the effects of participating for 16 weeks in the Brookings Wellness Program on cardiovascular function and self-concept in 35-55 year old men and women. Forty-nine volunteer men and women participated in the study. The experimental group consisted of 24 subjects who enrolled in the Brookings Wellness Program between June 1, 1987 and February 19, 1988. Twenty-five matched control subjects who were similar in age and lifestyle were also secured for this study. The experimental and control groups were pre and post tested to determine initial and final values for maximal oxygen consumption …

Go to article

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.

Go to article

South Dakota State University Graduation Exercises, December 12, 1987, Brookings, South Dakota, South Dakota State University Dec 1987

South Dakota State University Graduation Exercises, December 12, 1987, Brookings, South Dakota, South Dakota State University

Commencement Programs

Please be advised that the individuals listed in the program do not represent an official confirmation of having met the graduation requirements. The Fall 1987 Graduation Exercises will commence with introductions by University President Robert T. Wagner. Serving as honorary marshals are Mary Frances Lyle, Professor of Extension Service, and J. Walters McCarty, Professor of Animal Science. The commencement address, titled "On Being A Person With A Future," will be delivered by Dr. Lois I. Widvey, Professor of Education. Dr. Carol J. Peterson, Vice President for Academic Affairs, will acknowledge honor students. Commissioning of Air Force officers will be conducted …

Go to article

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.

Go to article

Sdsu Collegian, October 28, 1987, Student Association Of South Dakota State University Oct 1987

Sdsu Collegian, October 28, 1987, Student Association Of South Dakota State University

The Collegian Archive : 1980 to 1989

Vol. 96, No. 8

Go to article

Sdsu Collegian, October 7, 1987, Student Association Of South Dakota State University Oct 1987

Sdsu Collegian, October 7, 1987, Student Association Of South Dakota State University

The Collegian Archive : 1980 to 1989

Vol. 96, No. 5

Go to article

Sdsu Collegian, September 9, 1987, Student Association Of South Dakota State University Sep 1987

Sdsu Collegian, September 9, 1987, Student Association Of South Dakota State University

The Collegian Archive : 1980 to 1989

Vol. 96, No. 1

Go to article

Aid For Third World Agricultural Development: Help Or Hindrance To U.S. Agriculture, Thomas L. Dobbs Aug 1987

Aid For Third World Agricultural Development: Help Or Hindrance To U.S. Agriculture, Thomas L. Dobbs

Economics Commentator (1972- 2016)

No abstract provided.

Go to article

Fertilizing For Grass Seed Production, R. Gelderman, P. Carson, J. Gerwing Aug 1987

Fertilizing For Grass Seed Production, R. Gelderman, P. Carson, J. Gerwing

Agricultural Experiment Station Circulars (1920-1915)

Seed production from grass is highly dependent upon favorable moisture and good soil fertility. Both moisture and fertility must be present; one does little good without the other. A good grass seed crop needs about the same amounts of nutrients as either corn or oats. Table 1 shows relative comparisons of nutrients taken up by comparable-yielding crops. Successful grass seed production also requires an adequate stand, weed control, and use of adapted varieties. These are discussed in C 244, "Grass Seed Production: Guidelines," available from your county Extension agent.

Go to article

For Beef And Sheep: Implants And Feed Additives, Cooperative Extension South Dakota State University Jul 1987

For Beef And Sheep: Implants And Feed Additives, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

This publication provides information on implants and feed additives for beef and sheep. The type of implant, dosage, withdrawal before slaughter, re-implant interval, and type of animal is included, and well as instructions on their use. Six broad categories of feed additives are described: ionosphores, antibiotics, coccidiostats, estrus suppressants, buffers, and others.

Go to article

South Dakota State University One-Hundred First Annual Commencement, May 2, 1987, Brookings, South Dakota, South Dakota State University May 1987

South Dakota State University One-Hundred First Annual Commencement, May 2, 1987, Brookings, South Dakota, South Dakota State University

Commencement Programs

Please be advised that the individuals listed in the program do not represent an official confirmation of having met the graduation requirements. The 101st Annual Commencement ceremony will commence with introductions by University President Robert T. Wagner. Serving as honorary marshals are Dr. Harold S. Bailey, Jr., Vice President for Academic Affairs Emeritus/Distinguished Professor of Education, and Louise P. Guild, Professor Emeritus of Nutrition Research/Nutrition and Food Science. The commencement addresses will be delivered by Sue T. Wika and Donald A. Ufford, candidates for graduation. The commissioning of Air Force and Army officers will be conducted by Lt. Col. Danny …

Go to article

American Indians In South Dakota: A Profile, L. L. Baer, M. A. Bennett Mar 1987

American Indians In South Dakota: A Profile, L. L. Baer, M. A. Bennett

Agricultural Experiment Station Circulars (1920-1915)

Life is changing for the American Indians of South Dakota and the United States.* Nationally, the population is young, growing, and becoming more urban. The South Dakota population exhibits these same trends except that it remains predominantly rural. The number of American Indians in the U. S. grew from half a million in 1960 to 760,000 in 1970 and to 1,420,400 in 1980. The percentage living in rural areas declined from over 70% in 1960 to 55% in 1970 and 48% in 1980 (Johnson, 1975; U. S. Census Bureau, 1980).

Go to article

Effects Of Body Condition On Reproductive Performance Of Range Beef Cows, R.J. Pruitt, P.A. Momont Jan 1987

Effects Of Body Condition On Reproductive Performance Of Range Beef Cows, R.J. Pruitt, P.A. Momont

South Dakota Beef Report, 1987

Simnental-Angus crossbred cows were fed differing Levels of nutrition from December to May in each of 3 years to create a wide range in cow body condition or fleshiness at the beginning of the calving season (beginning mid-March) and when turned to summer pasture (early May) 1 month prior to the beginning of the breeding season (early June). Cows that were fleshier in March, May or June cycled earlier. Cows that were fleshier at the beginning of the breeding season calved earlier the following years. For cows that calved Late in the calving season, body condition prior to calving, in …

Go to article

Sdsu Dairy Digest, South Dakota State University Dairy Club Jan 1987

Sdsu Dairy Digest, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.

Go to article

1987 South Dakota Beef Report, Department Of Animal And Range Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University Jan 1987

1987 South Dakota Beef Report, Department Of Animal And Range Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University

South Dakota Beef Report, 1987

This is the complete 1987 South Dakota Beef Report.

Go to article

Parenting On Your Own : When There's Not Enough Time, Cooperative Extension, South Dakota State University Jan 1987

Parenting On Your Own : When There's Not Enough Time, Cooperative Extension, South Dakota State University

SDSU Extension Circulars

This publication discusses ways for single parents to manage their time. It includes guidance and strategies to set goals and priorities, inventory resources, use community resources, overcome management barriers, make the most of their time, make and control plans, and evaluate their time management skills.

Go to article

South Dakota Soybean Production Yield And Land Use Trends 1961-1986, D.D. Malo, M.E. Juba Jan 1987

South Dakota Soybean Production Yield And Land Use Trends 1961-1986, D.D. Malo, M.E. Juba

Agricultural Experiment Station Technical Bulletins (1939-2011)

Since 1960 major changes in management practices (row spacing, fertilization, new varieties, herbicides, new crops, fewer general farms, more mechanization, new tillage systems) climatic shifts, economic factors, and government programs have caused dramatic shifts in the acreage planted, yield, market demand, and total production of soybeans. As a result, a study was initiated to identify changes in yield, lan4 use, and total soybean production by county in South Dakota. The objectives of this study were to:
1. prepare and develop a data base of country soybean acreage (planted and harvested) and soybean yield information;
2. Calculate long term averages for …

Go to article

Parenting On Your Own : Feeling Good About Yourself, Cooperative Extension, South Dakota State University Jan 1987

Parenting On Your Own : Feeling Good About Yourself, Cooperative Extension, South Dakota State University

SDSU Extension Circulars

This publication discusses ways single parents can build self-esteem and a sense of worthiness. It includes guidance for parents to develop a personal sense of control, feel morally or ethically sound, and develop a sense of being worthy of love.

Go to article

South Dakota Farm And Home Research, South Dakota State University Jan 1987

South Dakota Farm And Home Research, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

Director’s comment: Our Station, born in political uproar, celebrates its centennial of services. Our horizons are as broad as in 1887 [p] 2
The Peoria connection: If marketing products is the roadblock, call in the experts. Our NRRC partner specializes in new-product ag research [p] 5
Answer to silica stones: Damned if you do and damned if you don’t? Recommendations don’t clash; one’s for feedlot cattle, the other for range [p] 10
Behind the statistics: They are real people with real debts. Chapter 11 fliers had been farming an average 19 years, 25% for more than 30 [p] 13
Farm …

Go to article

Rainbow Trout Cage Culture Utilizing Different Strains, Stocking Densities, And Feeding Methods In Eastern South Dakota Dugout Ponds, Jay Patrick Maher Jan 1987

Rainbow Trout Cage Culture Utilizing Different Strains, Stocking Densities, And Feeding Methods In Eastern South Dakota Dugout Ponds, Jay Patrick Maher

Electronic Theses and Dissertations

Rainbow trout (Salmo gairdneri) cage culture techniques were investigated in dugouts as part of a continuing program to evaluate the potential of small-scale, landowner-based aquaculture operations. Trout raised in the study did not reach a marketable size (200 g) due to the short growing season and small size at stocking. No significant (P >0.05) differences in growth were detected between stocking densities of 60, 80, 100, and 120 fish/m³. Demand feeding resulted in significantly greater length (P≤0.01), weight (P≤0.01), and relative weight (P≤0.05) than hand feeding in both years tested. Rainbow trout of the Hildebrand strain reached a significantly greater …

Go to article

Reciprocal Ovary Transplantation As A Means To Study Reproductive Function In Female Lethal Yellow Mice (A̲Y̲/A̲: C57bl/6j), Gerald Alan Dickens Jan 1987

Reciprocal Ovary Transplantation As A Means To Study Reproductive Function In Female Lethal Yellow Mice (A̲Y̲/A̲: C57bl/6j), Gerald Alan Dickens

Electronic Theses and Dissertations

The first study was conducted to determine whether the previously observed reproductive failures in aging obese lethal yellow (AY/a) females are due primarily to: (1) intrinsic defects within AY/a ovaries or (2) systemic defects extrinsic to AY/a ovaries such as sites within the hypothalamus or pituitary gland. A second experiment was conducted to assess uterine capacity in AY/a females. In order to accurately measure uterine capacity in AY/a females, it was necessary to separate uterine effects from embryo (AY/a) effects. Thus by conducting the appropriate ovary transplantations, one could test uterine capacity in AY/a females in the absence of AY/a …

Go to article

Effect Of Preconditioning On Performance And Health Of Feeder Steers, Janie Katrin Swann Jan 1987

Effect Of Preconditioning On Performance And Health Of Feeder Steers, Janie Katrin Swann

Electronic Theses and Dissertations

Ranchers are continuously looking for ways to produce heavier, healthier calves at sale time. There are many on-ranch management practices performed to accomplish this, including early weaning, creep feeding, preconditioning and implanting. However, over time results may be variable. Before deciding on a certain method for handling a calf crop, ranchers must carefully evaluate their own situation, including facilities, labor, feed and pasture conditions. Feedlot operators should also be aware of previous management of calves since preshipment practices may affect performance in the feedlot. In an effort to evaluate the preconditioning program in South Dakota, performance of preconditioned and nonpreconditioned …

Go to article

The Effect Of Photoperiod And Melatonin On Reproductive Performance Of Anestrous Ewes, Anthony Martin Wolf Jan 1987

The Effect Of Photoperiod And Melatonin On Reproductive Performance Of Anestrous Ewes, Anthony Martin Wolf

Electronic Theses and Dissertations

Seasonal fertility has been known to exist in the sheep industry for hundreds of years. The inability to control this seasonality has restricted year-round lamb production. Only recently has man attempted to alter this unfertile period of the year, through the use of different stimuli. The ewe produces the hormone "melatonin" in response to a dark photoperiod. In the fall, when the daily dark phase increases, one sees an increase in duration of the ewe's serum melatonin level. It is this increased melatonin during the fall that has been hypothesized to signal the onset of estrus in the ewe. Artificial …

Go to article

Studies Of The Prevention Of Silica Urolithiasis, Dong-Hao Lu Jan 1987

Studies Of The Prevention Of Silica Urolithiasis, Dong-Hao Lu

Electronic Theses and Dissertations

Urethral obstruction by silica calculi is a major cause of death of cattle and sheep grazing western ranges of the United States. Similar calculi problems have been found in several other countries including Canada, U.S.S.R. and Australia. Range grasses having silica contents of 4 to 7% (dry basis) appear to be the silica source. In addition, silica urinary calculi have been reported to occur in dogs from silicon of unknown origin, humans consuming large quantities of silicate antacids and rats and guinea pigs experimentally fed tetraethylorthosilicate (TES). Emerick and coworkers have found that supplemental dietary phosphate and acid-forming salts provide …

Go to article

Determining Green Needlegrass (Stipa Viridula Trin.) Seed Germination And Viability, Alan Lee Rubida Jan 1987

Determining Green Needlegrass (Stipa Viridula Trin.) Seed Germination And Viability, Alan Lee Rubida

Electronic Theses and Dissertations

Green needlegrass (Stipa viridula Trin.) is a native, cool season perennial bunchgrass common to the northern Great Plains, Good seedling vigor, rapid recovery after defoliation, high forage yields, nutritive quality, and palatability give green needlegrass potential use in range reclamation. Green needlegrass seed dormancy can cause problems to spring field establishment problems. To alleviate field establishment problems, dormant (fall) plantings have replaced spring plantings. Seed dormancy can be completely overcome in the laboratory by a 12-week viability test (12-week stratification period); however, this is impractical as a normal procedure. Currently, the Association of Official Seed Analysts (AOSA) procedure for determining …

Go to article

First Prev Next Last