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South Dakota State University

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Articles 2431 - 2460 of 3961

Full-Text Articles in Life Sciences

Alfalfa Seed Production, Lyle A. Derscheid, Robert J. Walstrom Jan 1981

Alfalfa Seed Production, Lyle A. Derscheid, Robert J. Walstrom

SDSU Extension Circulars

Alfalfa seed has high market value: producing certified adapted seed can become a more important enterprise for some South Dakota farmers. Around 100,000 acres are harvested for seed each year, but tho yield per acre is relatively low. Most producers harvest seed on a hit-and-miss basis. Only a few treat alfalfa seed as a major crop. Much of the alfalfa seed planted in South Dakota is raised in southern Idaho, eastern Oregon, southeastern Washington, and the San Joaquin Valley of California. But the acreage of certified seed of varieties recommended for South Dakota is gradually shrinking in western states. These …

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Plant Science : Agronomy, Plant Pathology, Entomology At South Dakota State University : A Centennial Report, Lyle A. Derscheid Jan 1981

Plant Science : Agronomy, Plant Pathology, Entomology At South Dakota State University : A Centennial Report, Lyle A. Derscheid

State, University and Departmental Histories

Subject Headings:
 South Dakota State University. Plant Science Department -- History South Dakota State University -- History Agricultural education -- South Dakota -- Brookings -- History Agriculture -- Research -- South Dakota -- History Agronomy -- Research -- South Dakota -- History Plant diseases -- Research -- South Dakota -- History Entomology -- Research -- South Dakota -- History Agriculturists -- South Dakota -- Biography Botanists -- South Dakota -- Biography


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South Dakota Farm And Home Research, South Dakota State University Jan 1981

South Dakota Farm And Home Research, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

Money in the bank [p] 3 “Soil analysis –it’s basic. The Soil Lab provides the services for your minimum effort, your maximum profit”
Cottonwood [p] 7 “scientists enthusiastic about research with potential to double range carrying capacity”
Measuring biomass [p] 11 “developing new instruments and techniques could speed research results. Answer ‘down the road’
Manageable shelterbelts [p] 12 “Twin row-high density design promises maximum access, height, and ground level density”
Dawn and Rita [p] 14 “New hard winter wheats show promise for disease resistance and high yield”
Long-term solutions [p] 17 “Success in corn breeding is hard won. Developing population …

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Preservative Effects Of Covering And Propionic Acid On Alfalfa Haylage In Bunker Silos, Thomas Jonathan Oelberg Jan 1981

Preservative Effects Of Covering And Propionic Acid On Alfalfa Haylage In Bunker Silos, Thomas Jonathan Oelberg

Electronic Theses and Dissertations

The preservation efficiency of covering alfalfa haylage with black plastic (polyethylene) and/or treating haylage with propionic acid was studied in two trials. Experiment 1 was designed to evaluate the influence of both covering and treatment with propionic acid on haylage chemical composition and heifer growth. In experiment 1, prop ionic acid was administered to the haylage at the chopper at 0.02% of the fresh forage weight. Chemical composition and ensiling temperature of the haylage were monitored and animal growth was measured with 16 Holstein heifers. Covered haylage was superior to treated haylage in quality as measured by chemical analyses and …

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Studies On Beneficial And Adverse Effects Of Dietary Buffers For Lambs, Jong Kyu Ha Jan 1981

Studies On Beneficial And Adverse Effects Of Dietary Buffers For Lambs, Jong Kyu Ha

Electronic Theses and Dissertations

Experiments using lambs were conducted to study the effects of buffers or roughages against acidosis occurring during rapid dietary changes. Experiments using rats were conducted to investigate vitamin A and thiamin stability and/or utilization as influenced by bentonite. Incubating rumen fluid in vitro at a pH lower than 6 reduced volatile fatty acid (VFA) production and increased lactate accumulation. Limestone or bentonite at levels of 2% in 92% concentrate diets had little effect on feed intake or rumen and blood parameters during a 7-day treatment period using rumen-canulated sheep. However, 2% NaHCO3 increased rumen pH and feed intake on …

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Lactase Activity In Steers Fed Large Amounts Of Dried Whey, Kenneth J. King Jan 1981

Lactase Activity In Steers Fed Large Amounts Of Dried Whey, Kenneth J. King

Electronic Theses and Dissertations

Large amounts of dried whole whey (86% of concentrate mix, 60% of total dry matter intake) were fed to four Holstein steers in place of corn and soybean meal in the control diet to evaluate the extent and site of lactose digestion in the ruminant's digestive tract. Diets consisted of 70% of the dry matter as concentrate mix and 30% as corn silage fed ad libitum as a total mixed ration. Weight gains and dry matter intakes were similar for steers fed dried whole whey or control diets. Samples of rumen contents from steers fed dried whole whey contained more …

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The Effects Of Rancid Milk On Cheddar Cheese, Shane Thomas Mcdonald Jan 1981

The Effects Of Rancid Milk On Cheddar Cheese, Shane Thomas Mcdonald

Electronic Theses and Dissertations

One of the most serious defects .of fluid milk is hydrolytic rancidity. Although not a new problem, recent practices in the dairy industry have increased its incidence. On the farm, the use of pipeline milking and transferring systems, in conjunction with bulk cooling and storage, involves excessive agitation and foaming of the raw milk. Both agitation and foaming enhance the development of rancidity. Additional agitation occurs when milk is pumped into storage silos, and pumped about the plant f or processing. Dairy processing facilities are becoming more centralized. Hence, raw milk must be transported longer distances to the dairy plants. …

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Hydrolyzed-Lactose Whey And Nonfat Dry Milk In Ice Cream, Mohammed Serajul Islam Jan 1981

Hydrolyzed-Lactose Whey And Nonfat Dry Milk In Ice Cream, Mohammed Serajul Islam

Electronic Theses and Dissertations

Sweet dry whey was used to replace 25% and 50% of nonfat dry milk solids in ice cream mix. Forty-five batches experimental and control lots of vanilla ice cream were manufactured. A commercial lactase was used to hydrolyze lactose to over 90% conversion and the lactase was inactivated after hydrolysis. The extent of lactose hydrolysis in the mix was adjusted to 50% or 75% by blending non-hydrolyzed nonfat dry milk and whey solids with hydrolyzed preparations. Extra sweetness of the conversion products permitted reduction of sucrose by 6.25% and 12.5%, respectively, in the 50% and 75% hydrolyzed lactose ice cream …

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Dye Marking Of Antibiotics Used In Treatment Of Mastitis, Nancy Fairbank Novak Jan 1981

Dye Marking Of Antibiotics Used In Treatment Of Mastitis, Nancy Fairbank Novak

Electronic Theses and Dissertations

The National Mastitis Council, Inc. defines mastitis as the infection of udder tissues (74). Mastitis is the most costly disease affecting dairy cows; many people do not realize the considerable losses due to mastitis (6). A reasonable estimate of the prevalence of mastitis is 50% of cows infected at any time (62); cows in the average herd contract clinical mastitis 1.5 times per year (74). The minimum antibiotic treatments per case of mastitis is two; with approximately 11 million dairy cows in the United States, the annual minimum number of antibiotic treatments is 33 million. In South Dakota, with nearly …

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Northeast Research Station Watertown, South Dakota Annual Progress Report, 1980, Agricultural Experiment Station, Plant Science Department Dec 1980

Northeast Research Station Watertown, South Dakota Annual Progress Report, 1980, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1980 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 1980 crop season, crop history for sunflowers, sunflower variety trials, sunflower population study, hay, silage, sorghum, and a soybean variety study.

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Southeast South Dakota Experiment Farm Annual Progress Report, 1980, Agricultural Experiment Station Dec 1980

Southeast South Dakota Experiment Farm Annual Progress Report, 1980, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This twentieth 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 breeding and performance, soybean research and planting, crop rotation, and pest control and other topics.

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Central Crops And Soils Research Station Highmore, South Dakota: Annual Progress Report, 1980, Agricultural Experiment Station Dec 1980

Central Crops And Soils Research Station Highmore, South Dakota: Annual Progress Report, 1980, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1980 progress report for the Central Crops and Soils Research Station at Highmore, South Dakota State College. This document represents the research conducted at the Station during the 1980 crop season including: weather data, crop rotation, hay, haylage, and silage production, small grain trials, spring wheat breeding, forage experiments, garden information, sunflower research, fodder beets, soybean trials, sheep-ram testing.

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West River Agricultural Research And Extension Center Progress Report, 1980, Agricultural Experiment Station Dec 1980

West River Agricultural Research And Extension Center Progress Report, 1980, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1980 annual progress report of the West River Crops Soils Research and Extension Center, South Dakota Agricultural Experiment Station. This report includes: a weather summary, small grain variety trials, sunflower variety testing, sorghum variety testing, and management, tillage and cultural practices.

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South Dakota Farm And Home Research, South Dakota State University Oct 1980

South Dakota Farm And Home Research, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

Director’s Comments [p] 2
The Human Factor [p] 4
Beyond Our Borders [p] 6
Barleys Just for Us [p] 9
Bread and Butter [p] 13
Outreach [p] 15
A Day’s Work [p] 18
A Great Combination [p] 20
IPM [p] 23
93rd Annual Report [p] 25

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Implementation Of A Microprocessor Based Accounting System For Agricultural Uses, Herbert Allen, Duane Sander, James Beals Aug 1980

Implementation Of A Microprocessor Based Accounting System For Agricultural Uses, Herbert Allen, Duane Sander, James Beals

Economics Research Reports

This study has demonstrated the feasibility of using microcomputers on the farm or in the home to solve problems involving manipulation of large quantities of data or detailed mathematical procedures. A microcomputer with at least 32,000 words of memory and magnetic disk storage is recommended for efficient data processing. This capacity is required for programs of the type presented in this publication. A printer with at least an 80 character line is an essential feature. It is frequently necessary to have hard copy printouts of financial statements or cash flows in order to document the farm financial position. Programs may …

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Dimensions And Characteristics Of The Retail Market For The City Of Brookings, South Dakota, A. Vollmers, Rodney L. Linafelter, Dean Tucker Aug 1980

Dimensions And Characteristics Of The Retail Market For The City Of Brookings, South Dakota, A. Vollmers, Rodney L. Linafelter, Dean Tucker

Economics Research Reports

This study was designed to examine the 1978 retailing environment in the City of Brookings, South Dakota. A survey of over 1,000 consuming households within the Brookings area was conducted in 1978 in establishing a data base from which this analysis proceeded. The basic purpose of this consumer survey study was to help establish the extent and trends in the Brookings retail and service market. It is the purpose of this report to provide the merchants of Brookings with infonnation which will assist them in improving their operations and to help the~ to be better able to serve and meet …

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South Dakota Farm And Home Research, South Dakota State University Jul 1980

South Dakota Farm And Home Research, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

Director’s Comments [p] 2
Irrigation: Who Profits? [p] 3 New N Test in the Works [p] 7
“Faked Steaks” [p] 11
The New Owners [p] 14
Seed Testing Lab [p] 19
James [p] 22
Algal Bloom [p] 25

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1979 Financial Analysis South Dakota Farm Panel Records Program, Herbert R. Allen Jun 1980

1979 Financial Analysis South Dakota Farm Panel Records Program, Herbert R. Allen

Agricultural Experiment Station Agricultural Economics Pamphlets (1941-1991)

The data in this report have been obtained from a selected number of farms located in Central South Dakota. It is a summary of data gained in a limited participation program for the development of a computerized farm financial information system. For this reason, the data in this report cannot be interpreted as representative of all farms or areas in South Dakota. However, it can serve as a guide to those persons with farm operations similar to the ones included in this report. Data is presented in this report on the average for all participating farms in one geographic location. …

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Public Provision Of Transportation Equipment: Some Long Term Economic Impacts, A. Vollmers May 1980

Public Provision Of Transportation Equipment: Some Long Term Economic Impacts, A. Vollmers

Economics Research Reports

Periodic shortages of rail equipment have freqnetly imposed marketing problems and costs upon the grain industry. For exumple, one study estimated the total cost due to the lack of transportation equipment was $2.36 million dollars for Iowa elevators in 1969. In spite of efforts to resolve the equipment problem through the private sector, these costs have persisted and led to attempts to seek relief through government intervention. During the 1980 legislative session, the South Dakota Governor suggested a new approach; the purchase of rail cars by the State to supplement railroad and elevator fleets. South Dakota is not alone in …

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South Dakota Farm And Home Research, South Dakota State University Apr 1980

South Dakota Farm And Home Research, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

Director’s Comments [p] 2
Plugged Plastic [p] 3
Sensing R-value in Walls [p] 5
No Overnight Answers [p] 7
Update: Alcohol Fuels [p] 10
Counterattack on Hessians [p] 12
Analytical Services [p] 14
Enzyme Inquiries [p] 18

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Economics Outlook For The 1980s In South Dakota : Highlights Of Papers Presented At Eighteenth Agri-Business Day, South Dakota Agricultural Experiment Station, Department Of Economics, South Dakota State University Mar 1980

Economics Outlook For The 1980s In South Dakota : Highlights Of Papers Presented At Eighteenth Agri-Business Day, South Dakota Agricultural Experiment Station, Department Of Economics, South Dakota State University

Agricultural Experiment Station Agricultural Economics Pamphlets (1941-1991)

Contents: Basis for Economic Survival and Growth Improving Farm Business Management Skills Training in Enterprise Selection and Planning Management Alternatives for Low-Resource Farmers Presentation of Honored Agri-Business Person of 1980 Comments by Honored Agri-Business Person of 1980 Agriculture Outlook for 1980 Livestock Marketing in the 1980's-AN OVERVIEW Small Town Viability and High Energy Prices South Dakota as Viewed by the Traveling Public Some Political Economics of Public Revenue System in South Dakota: A Look Into the 1980's. Wrap-up

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1980 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University Mar 1980

1980 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University

Little International Agricultural Exposition Catalogs

No abstract provided.

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James Valley Agricultural Research And Extension Center Annual Progress Report, 1980, Agricultural Experiment Station, Plant Science Department Mar 1980

James Valley Agricultural Research And Extension Center Annual Progress Report, 1980, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1980 progress report for the James Valley Agricultural Research and Extension Center. The reports in this document represent the research conducted at the Center during 1979. The report includes weather data, information on crop production, soil tillage, irrigation, soil reclamation, performance and variety test, herbicide performances and testing, and other experiments conducted at the Center in Redfield, South Dakota.

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Irrigating Alfalfa In South Dakota, James R. Johnson, Charles R. Krueger, Lyle A. Derscheid, Darrel D. Pehl, Paul L. Carson Jan 1980

Irrigating Alfalfa In South Dakota, James R. Johnson, Charles R. Krueger, Lyle A. Derscheid, Darrel D. Pehl, Paul L. Carson

SDSU Extension Circulars

Alfalfa performs admirably an irrigated crop in South Dakota-so well that it is often neglected. When given attention, it can realistically maintain irrigated yields of 6 to 7 TIA each year in most of South Dakota where 1 to 2 T are produced on dryland. Irrigated land that will produce 100-130 bu corn will produce 5-7 T alfalfa. On poorer irrigated land that produces 50-70 hu corn, one can expect 3-5 T alfalfa. Alfalfa has higher water requirements for peak yields than most other crops. It may not reach its full potential yield in any part of the stale without …

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South Dakota Farm And Home Research, South Dakota State University Jan 1980

South Dakota Farm And Home Research, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

Director’s Comments [p] 2
Direct Beef Marketing [p] 3
Selenium: Villain or Hero? [p] 7
Excellence that Won’t Quit [p] 11
Flax: A Crop to Watch [p] 13
Insect Watchers [p] 16

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Duration Of Antibiotic Residues In Milk From Cows Treated Via Intrauterine And Intramammary Infusion, Elias Abdurahman Jan 1980

Duration Of Antibiotic Residues In Milk From Cows Treated Via Intrauterine And Intramammary Infusion, Elias Abdurahman

Electronic Theses and Dissertations

Antibiotics have been employed by farmers and veterinarians for treatment of infectious cattle diseases for over 3 decades. The most common of these diseases in dairy cows is mastitis. Mastitis is defined by the National Mastitis Council (NMC) (49) as an inflammation of the mammary gland. It is the most prevalent and most costly disease .of dairy cattle. It is estimated that at least 50% of all cows are infected with some form of mastitis at any one time in one or more quarters; cows in the average herd contract clinical mastitis one and one-half times per yr (49) which …

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A Computerized Planning Model For Small Farms In Southeastern South Dakota, Rodney Gene De Smet Jan 1980

A Computerized Planning Model For Small Farms In Southeastern South Dakota, Rodney Gene De Smet

Electronic Theses and Dissertations

Structural changes in agriculture resulting in fewer and larger farms carries strong implications for smaller farms. Included in the small farm group are small, low-resource, and part-time farmers, some of which are unable to generate an adequate income due to limited resources. This research study has developed a managerial tool for assisting low-resource farmers in developing optimal farm plans. The planning model is an interaction of familiar components (budgets) with a complex mathematical model (linear progra111T1ing) to provide an efficient analytical tool for use by farmers to aid in their managerial process. This study has placed emphasis upon the development …

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Feeding Value Of High Protein Oat Silage Versus Corn Silage For Dairy Cows, Tilahun Sahlu Jan 1980

Feeding Value Of High Protein Oat Silage Versus Corn Silage For Dairy Cows, Tilahun Sahlu

Electronic Theses and Dissertations

Corn accounts for 80% of the total silage production in the United States while oats ranks second as a feed grain crop. Oats are a major crop in areas of the world where temperatures are cool and short growing seasons are not well suited for corn production. South Dakota is the leading oat producing state in the nation with 1. 68 million kilograms of oats produced annually. Oats play an important roll as animal feed because among common cereals in the United States it ranks highest in both protein and lysine content. Due to the wide genetic diversity of oat …

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Heat-Treated Soybean Proteins For Lactating Dairy Cattle, Clayton D. Mielke Jan 1980

Heat-Treated Soybean Proteins For Lactating Dairy Cattle, Clayton D. Mielke

Electronic Theses and Dissertations

The value of heat treatment of protein supplements to reduce protein solubility and increase protein utilization was studied in two lactation trials. Experiment I was designed to study the utilization of heat-treated soybean meal (HSBM) by cows in early lactation. An extrusion process with moist heat was used to produce HSBM - a product with lower protein solubility than regular soybean meal (SBM). Ten cows, 3 wks post-partum, were assigned to treatments of HSBM or SBM. Due to a problem in feed bag labeling the concentrate mix containing SBM and corn was not as formulated. A large amount of ground …

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Soil Microfungal Relationships Associated With Grassland Reestablishment, Dennis C. Clarke Jan 1980

Soil Microfungal Relationships Associated With Grassland Reestablishment, Dennis C. Clarke

Electronic Theses and Dissertations

The mixed prairie association has a characteristic soil microfungal flora associated with the cover vegetation (Clarke and Christensen, 1980). Rhizosphere organisms are correlated with the cover vegetation (Christensen, 1969) and a change in the cover vegetation should be accompanied by a change in the organisms in the rhizosphere. Some disturbances that may lead to change in the cover vegetation are tillage, grazing, interseeding, mowing and fires. Christensen's (1980) review of species diversity and dominance in fungal communities indicates that in general these disturbances tend to reduce soil microfungal diversity while increasing the frequency of the remaining species. Other studies have …

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