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

Agriculture Commons™

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

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Articles 91 - 120 of 271

Full-Text Articles in Agriculture

Profit Maximizing Farm Plans For Farms In Southeastern Nebraska: By Type And Size Of Farm, M. D. Skold, A. W. Epp, H. W. Hughes Apr 1965

Profit Maximizing Farm Plans For Farms In Southeastern Nebraska: By Type And Size Of Farm, M. D. Skold, A. W. Epp, H. W. Hughes

Nebraska Agricultural Experiment Station: Historical Research Bulletins

There are many forces operating in today's agricultural economy which cause farmers to examine carefully their patterns of resource allocation. Rising production costs coupled with downward tendencies in product prices focuses attention on efficient patterns of resource allocation. Technical change and changing resource and product price relationships affect efficient resource allocation patterns. This study considers possible efficient farm organizations available to farmers in southeastern Nebraska with given resources. The study determines profit maximizing farm plans for farm classes with different complements of resources and at alternative product price levels. Both crop and livestock enterprises are considered. Investment activities that generate …

Go to article

Irrigation And Fertilization Practices For Seed Production From Established Stands Of Side-Oats Grama, D. E. Smika, L. C. Newell Mar 1965

Irrigation And Fertilization Practices For Seed Production From Established Stands Of Side-Oats Grama, D. E. Smika, L. C. Newell

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The objectives of this study of grass seed production were to determine the response of an established stand of a warm-season grass to irrigation and fertilizer practices with regard to the specific practices needed to produce maximum quantity of adequate quality seed per acre. Side-oats grama was chosen for the study because of the availability of adapted varieties.

Go to article

Appraisal For Combined Pea Aphid And Spotted Alfalfa Aphid Resistance In Alfalfa, W. L. Howe, W. R. Kehr, C. O. Calkins Feb 1965

Appraisal For Combined Pea Aphid And Spotted Alfalfa Aphid Resistance In Alfalfa, W. L. Howe, W. R. Kehr, C. O. Calkins

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Sources of combined resistance to spotted alfalfa and pea aphids were found in Ranger alfalfa and its parental strains, foreign plant introductions, clones and their progenies. Ranger alfalfa appeared to be a good source for selection of plants with resistance to both aphids.

Go to article

Seed And Phenological Studies With Shattercane, O. C. Burnside Feb 1965

Seed And Phenological Studies With Shattercane, O. C. Burnside

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This research deals with the phenology and life history of shattercane, studies on seed dormancy and germination characteristics, and a description of the natural variability that occurs within this weedy species. Detailed information is needed on this weed before an intelligent approach can be made toward its control. These studies also may serve to familiarize people with shattercane and make them cognizant of its potential as a weed.

Go to article

Seasonal Population Fluctuations And Natural Control Of The Sweetclover Aphid, G. R. Manglitz, R. E. Hill Jul 1964

Seasonal Population Fluctuations And Natural Control Of The Sweetclover Aphid, G. R. Manglitz, R. E. Hill

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Because the potential of the sweetclover aphid for damaging sweetclover is well documented, yet damage occurs only occasionally under field conditions, it would appear that natural factors which depress midsummer populations are important in preventing greater damage and worthy of detailed study. Thus, this study was begun early in 1959 to investigate the natural factors which generally keep populations of this aphid below levels causing economic damage.

Go to article

Use Of Farm Resources As Conditioned By Tenure Arrangements, Virgil L. Hurlburt Apr 1964

Use Of Farm Resources As Conditioned By Tenure Arrangements, Virgil L. Hurlburt

Nebraska Agricultural Experiment Station: Historical Research Bulletins

How do tenure arrangements affect organization and use of resources within farm firms? Do lease terms and arrangements affect quantities and kinds of inputs? Does the tenant and the landlord each receive full earnings of the resources he contributes to the farm business? Which of the strictly tenure-oriented characteristics of farms, as contrasted with the general economic problems of all farms, help to explain differences between and within owner-operated, cropshare cash tenant-operated and livestock-share tenant-operated farms? These are the major questions to which answers were sought in the research reported here.

Go to article

Depletion Of Subsoil Moisture By Apple Trees And Other Woody Species, C. C. Wiggans Apr 1964

Depletion Of Subsoil Moisture By Apple Trees And Other Woody Species, C. C. Wiggans

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This project began in 1934 and ended in 1955. The work of Kiesselbach, Russel and Anderson indicated that depleted subsoil moisture might be the reason for the loss of many orchards and the injurious effects noted on native woody forest species. Most of the work in apple orchards was done at the University Fruit Farm at Union, Nebraska. Samples were also secured from commercial plantings of apples and other woody species in areas ranging from Rulo, near the Kansas-Nebraska border, to Florence, just north of Omaha, to Lincoln and several points in central Nebraska.

Go to article

Sulfur Fertilizers For Alfalfa Production In Nebraska, R. L. Fox, A. D. Flowerday, F. W. Hosterman, H. F. Rhoades, R. A. Olson Jan 1964

Sulfur Fertilizers For Alfalfa Production In Nebraska, R. L. Fox, A. D. Flowerday, F. W. Hosterman, H. F. Rhoades, R. A. Olson

Nebraska Agricultural Experiment Station: Historical Research Bulletins

In order to elaborate all aspects of the sulfur problem in alfalfa production, a series of field, greenhouse and laboratory experiments was initiated to determine: 1. The influence of sulfur fertilization on the yield of alfalfa in Nebraska. 2. The influence of sulfur fertilization on the protein, vitamin A, and sulfur contents of alfalfa. 3. The sulfur supplying capacities of various soils under field and greenhouse conditions. 4. The sulfur content of precipitation at widely scattered points in Nebraska. 5. Soil properties associated with sulfur deficiency. 6. Optimum methods for estimating the sulfur status of soils by soil testing. The …

Go to article

The Influence Of Acreage And Yield Changes On Crop Production In Nebraska, Robert M. Finley Oct 1963

The Influence Of Acreage And Yield Changes On Crop Production In Nebraska, Robert M. Finley

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The general purpose of the study is to assess the impact of acreage and yield changes on total production of important Nebraska crops. A secondary purpose is to examine two different methods of imputing the influence of changes of yield and acreage on production changes.

Go to article

Performance Of Alfalfas Under Five Management Systems, W. R. Kehr, E. C. Conard, M. A. Alexander, F. G. Owen Jul 1963

Performance Of Alfalfas Under Five Management Systems, W. R. Kehr, E. C. Conard, M. A. Alexander, F. G. Owen

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This bulletin reports stands, forage yields, and other agronomic data on alfalfas of diverse origin or type tested under five management systems at Lincoln, Nebraska. Narrow-crowned and broad-crowned types were tested. The management systems involved non-irrigated alfalfa-bromegrass tests (a) continuously grazed with steers, (b) cut for hay, and (c) rotationally grazed with sheep; an irrigated alfalfa-bromegrass test rotationally grazed with dairy cattle; and irrigated tests of alfalfas in pure stands cut for hay.

Go to article

The Economics Of Classifying Farmland Between Alternative Uses, Roger H. Willsie Mar 1963

The Economics Of Classifying Farmland Between Alternative Uses, Roger H. Willsie

Nebraska Agricultural Experiment Station: Historical Research Bulletins

At present some farm programs are aimed at reducing the acreage of land used for crop production. These programs have the objectives of reducing quantities of certain farm commodities and conserving land resources. By shifting land from the production of certain farm commodities to other commodities or to grass, total farm income may be raised and the costs of farm price support and storage programs reduced. In programs to shift land use a classification of land based on economic criteria would be useful. The primary concern of this study was with methods for identifying the economic margin between land uses; …

Go to article

Studies Of The Mechanisms And Sources Of Spotted Alfalfa Aphid Resistance In Ranger Alfalfa, W. L. Howe, W. R. Kehr, M. E. Mcknight, G. R. Manglitz Mar 1963

Studies Of The Mechanisms And Sources Of Spotted Alfalfa Aphid Resistance In Ranger Alfalfa, W. L. Howe, W. R. Kehr, M. E. Mcknight, G. R. Manglitz

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Mechanisms and sources of spotted alfalfa aphid resistance in Ranger alfalfa and its five parental strains were investigated during 1957-1960.

Go to article

Relationship Of Self-Fertility, Pollen Abortion, And Micronuclei Number To Agronomic Performance In Alfalfa, P. P. Rotar, W. R. Kehr Feb 1963

Relationship Of Self-Fertility, Pollen Abortion, And Micronuclei Number To Agronomic Performance In Alfalfa, P. P. Rotar, W. R. Kehr

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The purpose of this investigation was to study self-fertility, pollen abortion, and meiosis in a randomly selected population of Ranger alfalfa clones and their polycross progenies, and to relate such information to agronomic data obtained on the same materials.

Go to article

The U.S. Feed Concentrate-Livestock Economy's Demand Structure, 1949-1959 (With Projections For 1960-70), James B. Hassler Oct 1962

The U.S. Feed Concentrate-Livestock Economy's Demand Structure, 1949-1959 (With Projections For 1960-70), James B. Hassler

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Several years ago, members of the NCM-19 Technical Committee on grain marketing research decided to do more detailed research on the spatial aspects of the livestock-feed economy. The major objectives of this study are (1) to quantify the demand functions for the major animal products of agriculture at the retail level, (2) to derive the demand functions for the unprocessed forms at the farm level, (3) to derive the equilibrium demand functions for feed concentrates at the farm level, (4) to estimate the separate annual impact rates of trends in per capita income, marketing costs, conversion rates, and population on …

Go to article

Side-Oats Grama In The Central Great Plains, L. C. Newell, R. D. Staten, E. B. Jackson, E. C. Conard Apr 1962

Side-Oats Grama In The Central Great Plains, L. C. Newell, R. D. Staten, E. B. Jackson, E. C. Conard

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Side-oats grama, Bouteloua curtipendula (Michx.) Torr., is a warm-season grass distributed widely in the native grasslands of continental United States. It has long been considered a valuable forage grass. Its habit of growth and favorable seed-producing qualities have suggested its suitability for domestication as a pasture crop. Investigations which contributed to the domestication of side-oats grama were conducted at the Nebraska Agricultural Experiment Station in a 12-year period, 1948 to 1960. Field trials were carried on to evaluate forage and seed yields of selected strains and varieties from different regions. The photoperiodic responses of these strains were studied under controlled …

Go to article

The Bumblebees Of Nebraska, Wallace E. Laberge, Morgan C. Webb Mar 1962

The Bumblebees Of Nebraska, Wallace E. Laberge, Morgan C. Webb

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The purpose of this paper is to provide a ready means of identifying bumblebees found in Nebraska. It is for both amateur and professional entomologists. Included are an annotated list of the bumblebees found in Nebraska, artificial keys for species determination, a glossary for those not acquainted with the terminology used in the keys, a list of flower preferences and biological notes pertaining to bumblebees in Nebraska. The keys for identification include a few species of bumblebees which have not yet been collected in Nebraska but which may occur in the state.

Go to article

A Soil And Vegetation Inventory And Analysis Of Three Nebraska Sandhills Range Sites, Donald F. Burzlaff Mar 1962

A Soil And Vegetation Inventory And Analysis Of Three Nebraska Sandhills Range Sites, Donald F. Burzlaff

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This study was undertaken to inventory the soils and vegetation of certain areas of the Sandhills and to seek edaphic characteristics that may be the limiting factor in the distribution of various plant species. Information of this nature will permit formulation of more accurate management practices because of a refinement in delineation of range sites.

Go to article

Factors Affecting The Financial Progress Of Dryland Farmers In Central Nebraska, 1924 To 1956, Roger H. Willsie, H. W. Ottoson Dec 1961

Factors Affecting The Financial Progress Of Dryland Farmers In Central Nebraska, 1924 To 1956, Roger H. Willsie, H. W. Ottoson

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The financial progress of farmers is affected by many factors. Some of these factors were examined for their effects on farmers in the Nebraska Plains-Cornbelt Transition Area. Factors studied were: an index of opportunity to save, size of farm, size of livestock enterprise and education.

Go to article

The Effects Of Irradiating Dormant Maize Seeds With Xrays And Thermal Neutrons, Rosalind Morris, E. F. Frolik Dec 1961

The Effects Of Irradiating Dormant Maize Seeds With Xrays And Thermal Neutrons, Rosalind Morris, E. F. Frolik

Nebraska Agricultural Experiment Station: Historical Research Bulletins

In 1951 a research program was started at the University of Nebraska to compare the developmental effects of thermal neutrons and X rays on different crop seeds. Three crops, barley, tomato and maize, were chosen for additional information involving induced chromosomal aberrations and seedling mutations. The maize investigations are presented in this bulletin, along with a comparison among the three crops with respect to irradiation effects.

Go to article

The Performance Of Alfalfa Synthetics In The First And Advanced Generations, W. R. Kehr, H. O. Graumann, C. C. Lowe, C. O. Gardner Oct 1961

The Performance Of Alfalfa Synthetics In The First And Advanced Generations, W. R. Kehr, H. O. Graumann, C. C. Lowe, C. O. Gardner

Nebraska Agricultural Experiment Station: Historical Research Bulletins

During alfalfa breeding investigations conducted at the Nebraska Agricultural Experiment Station, numerous superior clones were selected and tested as clones, and in polycross progeny tests. Information was needed on the performance of synthetic varieties in the first and advanced generations, on the optimum number of clones to include in a synthetic variety, and on parent-progeny relationships. Clones with high general combining ability for forage yield as measured by polycross progeny tests, and in certain instances specific combining ability based on single-cross tests, were intercrossed in various ways to produce synthetic varieties. A group of synthetics varying in number of parents …

Go to article

Improvement Of Beef Cattle Through Breeding Methods. Summary Of Results From Regional Project Nc-1, Keith E. Gregory Jul 1961

Improvement Of Beef Cattle Through Breeding Methods. Summary Of Results From Regional Project Nc-1, Keith E. Gregory

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The major purpose of this project is to obtain information that beef cattle breeders can use to make maximum genetic improvement in all traits of economic value in beef cattle. The major objectives of NC-1 are the following: (1) to determine the traits of economic importance in beef cattle: (2) to assess their relative value; (3) to develop reliable methods and procedures for measuring and evaluating them; (4) to obtain estimates of their heritabilities; (5) to obtain estimates of the genetic and phenotypic correlations among all economically important traits; (6) to evaluate the effects and uses of inbreeding and heterosis; …

Go to article

Progress From Recurrent Selection Procedures For The Improvement Of Corn Populations, John H. Lonnquist Jul 1961

Progress From Recurrent Selection Procedures For The Improvement Of Corn Populations, John H. Lonnquist

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The possibilities of developing synthetic varieties suitable for the fringe areas of the corn belt, where cost of hybrid seed is high relative to the value of the expected crop, and in areas where hybrid corn might not be a feasible approach for other reasons, made it seem a worthwhile objective for study. Effort has been made in recent years to increase the productivity of hybrid combinations through selection of new superior lines using standard breeding procedures. The limited progress realized has resulted in an increased interest in the possible use of alternate methods for the development of superior germplasm …

Go to article

A Histological Study Of The Postnatal Development Of The Bovine Testis, R. G. Fossland, A. B. Schultze May 1961

A Histological Study Of The Postnatal Development Of The Bovine Testis, R. G. Fossland, A. B. Schultze

Nebraska Agricultural Experiment Station: Historical Research Bulletins

A limited number of detailed studies on the development of the bovine testis from birth to sexual maturity have been reported. Further study of bovine testis development appears desirable to furnish additional observations and to note variations that may occur during the developmental process. Information on the process of spermatogenesis should furnish a basis for experimental work designed to promote increased spermatogenic activity in the postpubertal testis as well as for work directed toward promoting complete spermatogenesis at an earlier than usual age. This report is a study of the histological picture of the testes from 56 bulls varying from …

Go to article

Relation Of Heart Girth To Weight In Holsteins And Jerseys, H. P. Davis, W. W. Swett, W. R. Harvey Jan 1961

Relation Of Heart Girth To Weight In Holsteins And Jerseys, H. P. Davis, W. W. Swett, W. R. Harvey

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Body weight is the one measurement most extensively used to evaluate growth, condition, and value for beef, and as a basis for calculating feed requirements for cattle. Weight can be determined readily by scales but unfortunately scales of a capacity adequate for weighing cattle are not always available. Thus there is a real need for a basis of estimating weight from some body measurement that can be obtained easily and at a minimum of cost and time. It is the aim of this study to utilize additional data now available to increase further the accuracy and reliability of estimating weight …

Go to article

Genetic Studies Of Winter Hardiness In Barley, C. R. Rohde, C. F. Pulham Dec 1960

Genetic Studies Of Winter Hardiness In Barley, C. R. Rohde, C. F. Pulham

Nebraska Agricultural Experiment Station: Historical Research Bulletins

An important obstacle toward the development of winter barley varieties with a higher level of winter hardiness has been the deficiency of genetic information on this character. The primary objective of these studies was to obtain information on the genetics of the winter hardiness of a group of 18 winter barley varieties which originated from widely different geographic areas of the world. It was hoped that this information might be helpful in determining whether or not it would be possible for barley breeders to combine different genetic sources of winter hardiness and attain a higher level of hardiness than presently …

Go to article

The Significance Of Xenia Effects On The Kernel Weight Of Corn, T. A. Kiesselbach Jun 1960

The Significance Of Xenia Effects On The Kernel Weight Of Corn, T. A. Kiesselbach

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The purpose of this paper is to appraise the xenia effects of the pollen parent on the kernel weight of corn (Zea mays L.), and to interpret so far as possible their genetic, physiologic and applied significance. The conclusions will be based on local experiments and a review of the literature.

Go to article

Yields In Different Cropping Systems And Fertilizer Tests Under Stubble Mulching And Plowing In Eastern Nebraska, F. L. Duley Jan 1960

Yields In Different Cropping Systems And Fertilizer Tests Under Stubble Mulching And Plowing In Eastern Nebraska, F. L. Duley

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The material in this report will be confined chiefly to studies on crop production with stubble-mulching compared with plowing. Major cash crops have been studied in different rotations including legumes and non-legume crops. In all tests, plowing has been compared with subsurface tillage. Different types of equipment have been devised and tested for the various operations during the course of these studies.

Go to article

Growth Measurements Of Holstein, Ayrshire, Guernsey And Jersey Males, H. P. Davis, I. L. Hathaway Jul 1959

Growth Measurements Of Holstein, Ayrshire, Guernsey And Jersey Males, H. P. Davis, I. L. Hathaway

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This study was based on monthly observations of all Holstein, Ayrshire, Guernsey and Jersey males born in the University of Nebraska dairy herd between 1922 and 1942. There were varying numbers of animals for the different months of age for the several breeds. Measurements of weight, slope of the rump, thickness of skin, and 13 linear measurements were taken monthly, from birth to disposal of the animals. The linear measurements were of heights at withers, hooks and rump; of lengths-diagonal (shoulder point to pinbone), body and rump; of widths at chest, hooks and pinbones; of depths at chest and barrel; …

Go to article

Origin And Performance Of Ranger Alfalfa, W. R. Kehr May 1959

Origin And Performance Of Ranger Alfalfa, W. R. Kehr

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Ranger alfalfa was developed through the cooperative efforts of personnel of the United States Department of Agriculture and the Nebraska Agricultural Experiment Station and released for seed increase in 1940. It is a winter-hardy, bacterial wilt resistant variety synthesized from five basic strains selected from Cossack, Turkistan and Ladak. Breeding methods used in the development of this variety were described in detail. Research results obtained on the performance of the basic strains and on the seed lots, produced under certification procedures, in controlled wilt and cold tests and forage yield trials under field conditions at the Nebraska station were presented …

Go to article

Evaluation Of Ground Corncobs And Corncob Components As Nutritive Materials In Rations For Beef Cattle, J. Matsushima, T. W. Dowe, V. H. Arthaud Dec 1957

Evaluation Of Ground Corncobs And Corncob Components As Nutritive Materials In Rations For Beef Cattle, J. Matsushima, T. W. Dowe, V. H. Arthaud

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Two feeding trials were conducted to (1) determine the comparative feeding values of ground corncobs with two fractions of the corncobs--namely, the beeswing and woodyring, and (2) to compare different factors that might affect the utilization of ground corncobs and cob fractions in wintering rations for beef cattle.

Go to article

First Prev Next Last