Life Sciences Commons^™

Factors Affecting Insecticide-Induced Resurgence Of The Brown Planthopper, Nilaparvata Lugens On Rice, S. Chelliah, E. A. Heinrichs

Department of Entomology: Faculty Publications

Resurgence of the brown planthopper, Nilaparvata lugens (Stål) on rice was induced by applications of decamethrin, methyl parathion, and diazinon. Differential mortality of predators and hoppers did not appear to be the primary factor for resurgence. Hoppers appeared to be attracted to methyl parathion and decamethrin treated plants because of plant growth. Improved plant growth, however, did not compensate for the increased feeding of the insecticide-treated hopper population, and plants treated with resurgence-causing insecticides succumbed to feeding injury earlier than untreated plants. Population increases were due in part to stimulation of reproduction of the hopper, either by contact action of …

The Interrelationship Between Household Food Expenditure And Fixed Expenses, University Of Tennessee Agricultural Experiment Station, John R. Brooker, Roger A. Hinson

Bulletins

No abstract provided.

A Technique For Physiologically Age-Grading Female Stable Flies, Stomoxys Calcitrans (L.), P. J. Scholl

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

A method of dissection followed by staining was initiated to allow physiological age- grading based on ovarian development in order to more completely describe the physiological development of adult female stable flies [Stomoxys calcitrans (L. )]. The gonotrophic developmental continuum from a non-differentiated cell in teneral females to mature eggs at the time of oviposition was first arbitrarily divided into six stages by using distinct landmarks within the developing oocyte . Then, nulliparous, uniparous, and biparous+ females were differentiated on the basis of the presence or absence of stained follicular relics in the ovariole sheaths. The combination of the …

Agricultural Experiment Station News December 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
FUNDING
FAREWELL AND BEST WISHES TO MRS. DELORES SORENSEN
RECEPTION
Sahs Sez
GRANTS AND CONTRACTS
PROJECTS APPROVED
CURRENT RESEARCH INFORMATION SYSTEM
Animal Science Departmental Review
Energy Farm
PERSONNEL

Agricultural Experiment Station News November/December 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
FAREWELL AND BEST WISHES TO MRS. DELORES SORENSEN
RECEPTION
GRANTS AND CONTRACTS
PROJECTS APPROVED
CURRENT RESEARCH INFORMATION SYSTEM
FEATURE ARTICLES

Growth And Survival Of Nebraska Panhandle Wheat Farms Under Selected Financial Conditions, Larry J. Held, Glenn A. Helmers

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Simulation was used to analyze impact of land expansion alternatives, self-imposed borrowing limits, starting equity conditions, and land appreciation upon a firm concurrently seeking growth and survival over a projected 15-year period (1976-1990). An average-sized 960-acre (389 ha) Nebraska Panhandle wheat-fallow farm served as the representative firm. Standard production practices and technologies were used for computing costs. Machinery and operating costs were assumed to inflate five percent annually. Dryland wheat acreage was valued at $375 per acre ($926.63 per ha) in 1976 and was allowed to appreciate at an annual rate of four percent. A hypothetical series of three cyclical …

Farm And Home Bulletin November 1980, Tennessee State University

Farm and Home Bulletin

No abstract provided.

Performance Of Soybean Varieties In 1980, University Of Tennessee Agricultural Experiment Station, Charles R. Graves

Research Reports

No abstract provided.

Performance Of Corn Hybrids In 1980, University Of Tennessee Agricultural Experiment Station, Charles R. Graves

Research Reports

No abstract provided.

Decedent Estates: Selected Guidelines For Administering Estates In Tennessee, University Of Tennessee Agricultural Experiment Station, Ronald W. Todd

Bulletins

No abstract provided.

Farm Home And Ministers' Institute Program November 7 1980, Tennessee State University

Farm Home and Ministers' Institute Program

No abstract provided.

Agricultural Experiment Station News October 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE ACTING DIRECTOR'S DESK
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – September 1980

Agricultural Experiment Station News October 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
GRANTS AND CONTRACTS
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - September 1980

The Beef Delivery System: Optimal Plant Sizes, Locations And Product Flows, J. C. Hafer, J. G. Kendrick

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The United States beef delivery system is composed of three stages: procurement, processing, and distribution. Minimization of costs associated with these stages can be accomplished best by identification of optimal plant sizes and locations. Research was directed toward an analytical approach that could be used to minimize total costs of the U.S. beef delivery system. This report will discuss the grid system used to divide the · United States into study units, describe features of the model used, discuss research results, and offer conclusions.

Soybean-Wheat Cropping Systems: Evaluation Of Planting Methods, Varieties, Row Spacings, And Weed Control, University Of Tennessee Agricultural Experiment Station, Charles R. Graves, Tom Mccutchen, Larry S. Jeffery, Joseph R. Overton, Robert M. Hayes

Bulletins

No abstract provided.

Agricultural Experiment Station News September 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE ACTING DIRECTOR'S DESK
SOME OBSERVATIONS ABOUT RESEARCH
ACTIVITIES UPDATE
UPCOMING EVENTS
SAHS SEZ
GRANTS AND CONTRACTS
FOOD FOR THOUGHT

Agricultural Experiment Station News September 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
ACTIVITIES UPDATE
UPCOMING EVENTS
SAHS SEZ
GRANTS AND CONTRACTS
FOOD FOR THOUGHT

Muskrat Population Dynamics And Vegetation Utilization: A Management Plan, Thomas R. Mccabe, Michael L. Wolfe

Aspen Bibliography

Muskrat (Ondatra zibethicus) populations are located in extensive marshes that are managed either privately or by state or federal refuge personnel. Maintenance of a balanced muskrat population is important to marsh management, therefore necessitating accurate density estimates. Feasibility of a vegetational utilization index as a reliable population indicator is being tested at Fish Springs NWR, Utah.

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 …

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 …

Alfalfa Insect Management Studies 1971-77, G. R. Manglitz, W. R. Kehr, D. L. Keith, J. M. Mueke, J. B. Campbell, R. L. Ogden, T. P. Miller

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Three tests in southwestern Nebraska during 1971 and 1972 evaluated insecticides against the army cutworm. Adult alfalfa weevils did not damage new second growth alfalfa in a small plot study during a 3-year period (1973-1975) at Gothenburg, NE. However, excellent control of larval alfalfa weevils was obtained. These results indicated a need to establish economic threshold levels for the alfalfa weevil in Nebraska to prevent unnecessary use of insecticides. Four tests to control the alfalfa weevil with registered insecticides verified the efficacy of these materials under Nebraska conditions. A series of tests conducted during 1975 at the Mead Field Laboratory …

Agricultural Experiment Station News August 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE ACTING DIRECTOR'S DESK
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GRANTSMANSHIP
PROJECTS APPROVED
THE BIOMETRICS AND INFORMATION SYSTEMS CENTER
NO TILLAGE AGRICULTURE
PERSONNEL ACTION
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - August 1980
BULLETINS PRINTED

Agricultural Experiment Station News August 1980 (Summer Issue)

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE ACTING DIRECTOR'S DESK
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GRANTSMANSHIP
PROJECTS APPROVED
THE BIOMETRICS AND INFORMATION SYSTEMS CENTER
NO TILLAGE AGRICULTURE
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - August 1980
BULLETINS PRINTED

Tennessee Fencing And Animal Restraint Laws, University Of Tennessee Agricultural Experiment Station, Ronald W. Todd

Research Reports

No abstract provided.

Farm, Ranch And Home Quarterly Institute Of Agriculture And Natural Resources, University Of Nebraska- Lincoln

Farm, Ranch and Home Quarterly

In this issue:

Facilities, Staff Benefit State......................... 2

Questions and Answers On Divorce....................... 3

Hassle-Free Guide to a Better Diet-Five Groups Aid in Wise Food Choices....................... 7

Enders Reservoir-Inflow Decline Poses Problem................ 8

Research Digest............................. 10

WEEDS-Identification Aids in Control ................... 12

1920-1980-60 Years of Tractor Testing ................... 14

Waste Recycling-A' Mountain' of Resources for Soil Improvement...................................... 18

Curriculum-Decision Making in Education........................ 22

New Directions in Research .............................. 24

Agricultural Experiment Station News July 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – June 1980

Agricultural Experiment Station News July 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – June 1980

Influence Of Fertilizer Nitrogen And Sulfur On Production Of Malting Barley, G. W. Rehm, R. S. Moomaw

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Studies in north-central Nebraska from 1975 through 1977: 1. Evaluated the malting barley production potential of the irrigated sandy soils of the region. 2. Measured the effect of application of N and S on yield and quality of barley grown for malting purposes. 3. Investigated the ability of N analysis of barley in the vegetative stage to predict protein content of grain at harvest. Data gathered lead to the following conclusions: 1. The potential for production of malting barley on irrigated sandy soils of north-central Nebraska is limited. 2. Yields increased with the application of fertilizer N throughout the study …

Leaf Diffusive Resistance And Relative Water Content As Indications Of Varietal Sensitivity To Drought In Potatoes, Darlene A. Wilcox, Richard A. Ashley

Storrs Agricultural Experiment Station

No abstract provided.

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. …