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 …

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 …

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.

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

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

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 …

Agricultural Experiment Station News June 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
GRANTS AND CONTRACTS
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – May 1980
BULLETINS PRINTED

Agricultural Experiment Station News June 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
PERSONNEL ACTIONS
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – May 1980
BULLETINS PRINTED

Agricultural Experiment Station News May 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
GRANTS AND CONTRACTS
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – April 1980

Agricultural Experiment Station News May 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
GRANTS AND CONTRACTS
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – April 1980

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

Farm, Ranch and Home Quarterly

In this issue:

IANR Energy Concerns..................... 2

Rust, Leaf Spot- Winter Wheat's Costly Foe..................... 3

The Swift Fox- An Endangered Species.................... 6

The Role of Women in Public Affairs..................... 8

Soybean Applicators- New Weapons Against Weeds................ 10

Close-up- Roller Herbicide Applicator................... 12

Research Digest.................. 14

Human Development and the Family- A Career to Touch All Ages, Areas of Family Life................... 16

Land Use- Nebraska's Changing Profile..................... 18

Energy Management- Best Weapons Against Rising Fuel Costs...................... 22

Agricultural Experiment Station News April 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
PERSONNEL ACTION FROM JANUARY THROUGH MARCH 1980
GENERAL NOTES
GRANTS AND CONTRACTS
PROJECTS APPROVED FROM JANUARY THROUGH MAY 1980
Agricultural Mechanization - Who Wins? Who Loses? By W.E. Splinter
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - March 1980
BULLETINS PRINTED

Agricultural Experiment Station News April 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S OFFICE
1972-73 ENROLLMENTS
PROJECTS APPROVED FROM JANUARY THROUGH MAY 1980
GRANTS AND CONTRACTS
PERSONNEL ACTION FROM JANUARY THROUGH MARCH 1980
FEATURE ARTICLE: AGRICULTURAL MECHANIZATION – WHO WINS? WHO LOSES?
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - March 1980
BULLETINS PRINTED

Agricultural Experiment Station News March 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
PERSONNEL ACTION
GRANTS & CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - February 1980
BULLETINS PRINTED

Agricultural Experiment Station News February 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
GENERAL NOTES
NEWSLETTER READER INPUT NEEDED
REMINDER TO STAFF
GRANTS
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - January 1979
BULLETINS PRINTED

Agricultural Experiment Station News February 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR’S DESK
GENERAL NOTES
NEWSLETTER READER INPUT NEEDED
REMINDER TO STAFF
GRANTS
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - January 1979
BULLETINS PRINTED

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

Farm, Ranch and Home Quarterly

In this issue

: Market Center Proposed...................................... 2

Founder-Researchers Seek Baseline Information .......................... 3

Research Digest .......................................... 4

'Technical Assistance is Key In Food Production Development ......................... 6

Botulism-A Big Problem in a Small Package ........................ 8

Pen of Three-Youth Experience in Beef Production ...................................... 11

Applicators Tested for Soybean Herbicide Control ...................................... 12

Fuel Survey-Keeping Tabs on Energy Use ................... 14

Creativity in Young Children .............................. 16

Education Importance and Satisfaction- QUALITY OF LIFE................................ 18

Alexandria: A Study in Community Development .......................................... 22

G80-503 Vegetable Garden Seed Storage And Germination Requirements, Dale T. Lindgren

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide has information on the selection and storage of vegetable garden seed.

A successful garden begins with the selection and use of high quality seed of adapted superior varieties. Start by purchasing seed from a reputable seed company. Save records of your seed orders, so if you do have a complaint you can contact the sales company. Saving records of your seed orders is also useful for keeping track of the varieties you planted.

Honeydew Excretion Measurement Techniques For Determining Differential Feeding Activity Of Biotypes Of Nilaparvata Lugens On Rice Varieties, P. Paguia, M. D. Pathak, E. A. Heinrichs

Department of Entomology: Faculty Publications

Techniques to quantify the feeding activity of Nilaparvata lugens (Stål) on rice varieties as based on honeydew excretion are described, and their potential as a bioassay for biotype identification are discussed. Honeydew, excreted on filter paper, was stained with ninhydrin and quantified by measuring the area (mm²) or by weighing. Results were satisfactory but the methods were extremely tedious. Volumetric measurement of honeydew with micropipettes was less sensitive. The color intensity of one μliter honeydew streaked on filter paper and treated with 0.001% ninhydrin was determined with a Fujiox Densitometer. The method was relatively simple and rapid …