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Nebraska Agricultural Experiment Station: Historical Research Bulletins

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Pollination Cycles And Pollen Dispersal In Relation To Grass Improvement, Melvin D. Jones, L. C. Newell Oct 1946

Pollination Cycles And Pollen Dispersal In Relation To Grass Improvement, Melvin D. Jones, L. C. Newell

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The plant breeder is initially concerned with gaining a knowledge of the breeding behavior of his plant materials in order that improvement may be undertaken effectively. It is important to know the different characteristic pollination habits of these plants. To develop and apply techniques applicable to the improvement of a given grass crop, it is desirable to know the time of day and the number of days that the grass sheds pollen. The effects of temperature, humidity, light, and wind on pollination must be considered. Once superiority of germplasm is obtained, the most important consideration is the maintenance of this …

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Pig Typhus (Salmonellosis Suis), L. Van Es Aug 1946

Pig Typhus (Salmonellosis Suis), L. Van Es

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Salmonellosis suis or pig typhus, also designated as pig typhoid, infectious necrotic enteritis, or "necro," is an infectious disease among young pigs. It constitutes a major factor in the mortality of juvenile swine, and as such must be regarded as a more or less perennial hazard in swine production. Infectious necrotic enteritis caused by Salmonella suipestifer is the subject of the present publication.

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The Utilization Of Food Elements By Growing Chicks. Xi. A Comparison Of Ground Wheat And Ground Rye In Rations For Growing Chicks, C. W. Ackerson, W. E. Ham, F. E. Mussehl Jun 1946

The Utilization Of Food Elements By Growing Chicks. Xi. A Comparison Of Ground Wheat And Ground Rye In Rations For Growing Chicks, C. W. Ackerson, W. E. Ham, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. The effect of replacing the shorts and bran of a standard ration by ground wheat or ground rye was studied with two lots of newly hatched chicks. 2. Comparisons were made on the basis of equal intakes of dry matter and nitrogen by all chicks. 3. The wheat-fed lot made a significantly greater gain than the rye-fed lot. 4. Several cases of curled-toe paralysis occurred in the two lots, and a tendency to cannibalism appeared in the rye-fed lot.

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The Utilization Of Food Elements By Growing Chicks. X. A Comparison Of Open-Pollinated And Hybrid Corn In A Ration For Growing Chicks, C. W. Ackerson, W. E. Ham, F. E. Mussehl Apr 1946

The Utilization Of Food Elements By Growing Chicks. X. A Comparison Of Open-Pollinated And Hybrid Corn In A Ration For Growing Chicks, C. W. Ackerson, W. E. Ham, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. The effect of replacing the open-pollinated corn with hybrid corn in an otherwise complete ration was studied in a growth and body analysis experiment with two lots of newly hatched chicks. 2. The pelleted rations were consumed in identical amounts by all chicks of both lots. 3. There were significant differences in the growth rate of the chicks at the end of a six-weeks feeding trial in favor of the lot fed open-pollinated corn.

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Distillers' By-Products And Soybean Meal In Dry Calf Starters For Calves On Limited Quantities Of Milk, H. P. Davis, G. W. Trimberger Mar 1946

Distillers' By-Products And Soybean Meal In Dry Calf Starters For Calves On Limited Quantities Of Milk, H. P. Davis, G. W. Trimberger

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Whole milk is recognized to be very satisfactory as the principal source of nutrients for young growing calves. But the price of milk and its importance as food for human beings has tended to introduce the use of substitutes. Skim milk has been demonstrated to be a satisfactory substitute when fed with grain after the first few weeks of feeding; but since skim milk, too, has become of increased usefulness for human nutrition, this experiment, one of a series, was designed to determine whether or not combinations of various grains, when fortified with vitamins, could be substituted for the solids …

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Influence Of Food Plants On Fecundity, Larval Development And Abundance Of The Tuber Flea Beetle In Nebraska, Roscoe E. Hill Feb 1946

Influence Of Food Plants On Fecundity, Larval Development And Abundance Of The Tuber Flea Beetle In Nebraska, Roscoe E. Hill

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Laboratory and field tests were conducted to determine the effects of different food plants on fecundity, adult longevity and larval development of the tuber flea beetle, Epitrix tuberis Gentner. All food plants tested were those upon which the overwintered beetles commonly feed in the spring following emergence from hibernation.

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The Effects Of Penicillin On E. Rhusiopathiae Infected Pigeons, L. Van Es, J. F. Olney, I. C. Blore Oct 1945

The Effects Of Penicillin On E. Rhusiopathiae Infected Pigeons, L. Van Es, J. F. Olney, I. C. Blore

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Advantage was taken of an opportunity to study the effects of penicillin on Erysipelothrix rhusiopathiae, the causative organism of swine erysipelas. Owing to the fact that swine cannot readily be infected with erysipelas by artificial methods, pigeons which are highly susceptible to the disease, were selected to serve as experimental animals. It was the purpose of these studies to ascertain whether or not the swine erysipelas bacillus is sensitive to the drug and incidentally to determine the possibility of finding application of penicillin in the treatment of swine.

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Carotene Content Of Native Nebraska Grasses, I. L. Hathaway, H. P. Davis, F. D. Keim Oct 1945

Carotene Content Of Native Nebraska Grasses, I. L. Hathaway, H. P. Davis, F. D. Keim

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The carotene content of twenty-four grasses native to Nebraska were determined at approximately monthly intervals from June to November. While the carotene concentration of most of the grasses was moderately high during the growing season, it declined to a rather low point by late November. With the exception of Switchgrass, Hairy Grama, Little Bluestem and Prairie Dropseed, all of the grasses contained enough carotene to supply the needs of range cattle until late November. However, only eighteen of the grasses still contained enough carotene by the latter part of September to furnish the carotene required by dairy cows. Even as …

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Effects Of Ddt And Other Insecticides On Several Species Of Potato Insects, Roscoe E. Hill Jun 1945

Effects Of Ddt And Other Insecticides On Several Species Of Potato Insects, Roscoe E. Hill

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Field and laboratory tests conducted in Nebraska showed DDT to be more effective than any other material yet tested against potato insect pests. Records were obtained on tuber flea beetles, Epitrix tuberis, potato psyllids, Paratrioza cockerelli, potato leafhoppers, Empoasca fabae, green peach aphids, Myzus persicae, Lygus elisus, Chlamydatus associatus, Aceratagallia uhleri and Macrosteles divisus. DDT remained effective against potato psyllids and potato leafhoppers under field conditions for a relatively long period of time. Populations of certain beneficial insects, such as Nabis spp., Orius spp. and lady beetles were found to be significantly reduced …

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Charcoal Rot Of Corn And Sorghum, J. E. Livingston Apr 1945

Charcoal Rot Of Corn And Sorghum, J. E. Livingston

Nebraska Agricultural Experiment Station: Historical Research Bulletins

In Nebraska, the charcoal rot caused considerable damage to the 1940 grain sorghum crop in the south central counties, and the following year it caused serious lodging and reduction of yield in both corn and sorghum in all sections of the state. Field observations indicated that some varieties of sorghum were damaged less than others; thus it appeared desirable to test thoroughly all varieties to determine whether any were sufficiently resistant to be recommended for field planting or to be used in a breeding program. It seemed desirable to study the influence of soil environment on infection and the development …

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Protein Supplements In Dry Calf Starters For Calves On Limited Quantities Of Milk, George W. Trimberger, Herbert Perry Davis Aug 1944

Protein Supplements In Dry Calf Starters For Calves On Limited Quantities Of Milk, George W. Trimberger, Herbert Perry Davis

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This experiment was undertaken to determine the usefulness of various high protein concentrates of animal and plant sources in comparison with dried skim milk in calf starters during the early stages of calf growth.

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The Mosquitoes Of Nebraska, H. Douglas Tate, Doris B. Gates Jun 1944

The Mosquitoes Of Nebraska, H. Douglas Tate, Doris B. Gates

Nebraska Agricultural Experiment Station: Historical Research Bulletins

A survey of mosquitoes in Nebraska was conducted by the Nebraska Agricultural Experiment Station during 1942 and 1943. The object of the study was to determine the species, relative abundance, seasonal occurrence, and principal breeding places of mosquitoes in representative areas of the state. This report presents the results of the survey, and, in addition, some records and observations made in Nebraska by other workers during and previous to initiation of the project.

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The Use Of Dried Whey And Blood Meal In The Raising Of Calves On Limited Amounts Of Milk, I. L. Hathaway, G. W. Trimberger, H. P. Davis Oct 1943

The Use Of Dried Whey And Blood Meal In The Raising Of Calves On Limited Amounts Of Milk, I. L. Hathaway, G. W. Trimberger, H. P. Davis

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The use of substitutes for milk in the raising of calves is always of interest to the progressive dairyman, since there are a number of circumstances in which it is advantageous to reduce the milk feeding period. Producers of market milk often desire to raise their calves on as little milk as possible in order to have more milk available for market. When the demand for milk is good, dairymen who usually market cream only may prefer to sell milk and raise their calves on starters or other milk substitutes. Dairy farmers may wish to use the skim milk generally …

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Nitrate Production As Affected By Grain-Crop Residues On The Surface Of The Soil, T. M. Mccalla, J. C. Russel Aug 1943

Nitrate Production As Affected By Grain-Crop Residues On The Surface Of The Soil, T. M. Mccalla, J. C. Russel

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The purpose of this bulletin is to present the data on nitrate contents and nitrate production in tests where straw or stalk residues were left on the surface through subsurface tillage, as compared with check treatments where these residues were plowed under or were absent. Nine of these tests were at Lincoln, Nebraska, and one was at the Hastings, Nebraska, Hydrological Project. Two tests were conducted in 1939, four in 1941, and four in 1942.

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Conception Rate In Dairy Cattle By Artificial Insemination At Various Stages Of Estrus, George W. Trimberger, H. P. Davis Apr 1943

Conception Rate In Dairy Cattle By Artificial Insemination At Various Stages Of Estrus, George W. Trimberger, H. P. Davis

Nebraska Agricultural Experiment Station: Historical Research Bulletins

A breeding experiment with 295 dairy cows and heifers of the Jersey, Guernsey, Ayrshire, and Holstein breeds was conducted in the University of Nebraska dairy herd. The females were given artificial services at various stages of estrus to determine the effect of time of service upon conception. The results obtained indicate the potential benefits in higher percentage of conception in females bred during the middle of estrus, toward the end of estrus, and those bred in full heat and rebred in 24 hours. The latter is usually not very practical, especially in artificial breeding rings, but there are occasions when …

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Alfalfa Breeding, H. M. Tysdal, T. A. Kiesselbach, H. M. Westover Jun 1942

Alfalfa Breeding, H. M. Tysdal, T. A. Kiesselbach, H. M. Westover

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Interest in the principles of alfalfa breeding has increased greatly with the growing "forage consciousness" of the country at large and the more specific interest developed through cooperation in the Alfalfa Improvement Conference. As is true of many other forage crops, information on the breeding behavior of alfalfa is meager. During the past few years, however, the genetics and principles of reproduction of this crop have come to be better understood and it is the purpose of this paper to bring together the available information pertaining to the improvement of alfalfa and to add certain suggestions with respect to future …

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The Relations Of Vegetative Composition And Cattle Grazing On Nebraska Range Land, T. E. Brinegar, F. D. Keim Mar 1942

The Relations Of Vegetative Composition And Cattle Grazing On Nebraska Range Land, T. E. Brinegar, F. D. Keim

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The objectives of the studies reported in this paper were: (1) to obtain an analysis of the vegetation in tall and short grass range lands, (2) to observe the activities of cattle on the range, and (3) to determine the effects of grazing upon vegetation.

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The Geographic Distribution Of Azotobacter And Rhizobium Meliloti In Nebraska Soils In Relation To Certain Environmental Factors, H. B. Peterson, T. H. Goodding Jun 1941

The Geographic Distribution Of Azotobacter And Rhizobium Meliloti In Nebraska Soils In Relation To Certain Environmental Factors, H. B. Peterson, T. H. Goodding

Nebraska Agricultural Experiment Station: Historical Research Bulletins

In this investigation a survey of Nebraska soils has been made in order to determine the distribution of the aerobic nonsymbiotic and symbiotic nitrogen fixers of the genera Azotobacter and Rhizobium respectively. In connection with this survey, some of the characteristics of the soils which may bring about this distribution were studied. Up to this time practically no research has been reported on the microflora of the soils of Nebraska. Hence there is little basis for predicting the activity of these organisms under environmental conditions as they exist here. It is hoped that this work will not only supply some …

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The Utilization Of Food Elements By Growing Chicks. Ix. The Nitrogen Of Urea, C. W. Ackerson, W. E. Ham, F. E. Mussehl Aug 1940

The Utilization Of Food Elements By Growing Chicks. Ix. The Nitrogen Of Urea, C. W. Ackerson, W. E. Ham, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. The effect of replacing one-third of the concentrate of a ration for growing chicks with a mixture of starch and urea that contained an amount of nitrogen equal to that contained in the concentrate withdrawn from the ration was studied with two lots of chicks. 2. All chicks of both lots consumed equal amounts of nitrogen during the experiment. 3. Conclusions were based on increases in body weight and content of nitrogen, calcium and phosphorus at slaughter.

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The Influence Of Whole Wheat, Bran And Shorts On Body Weight And Feather Growth In Chicks, F. E. Mussehl, C. W. Ackerson, M. J. Blish May 1940

The Influence Of Whole Wheat, Bran And Shorts On Body Weight And Feather Growth In Chicks, F. E. Mussehl, C. W. Ackerson, M. J. Blish

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The proteins of the entire wheat kernel and of the bran and shorts are apparently utilized with equal efficiency by growing chicks when used with a base of corn, barley, oats, meat scraps, fish meal, and soybean meal. The relatively higher protein levels of bran and shorts, as compared to ground wheat, should be considered by the poultry producer in deciding which product or products can be used with greatest economy. A good concentration of a feather-growth factor is found in wheat bran. Other common feedstuffs carry the same essential, and the amount of bran which should be used in …

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An Inquiry Into The Influence Of Environment On The Incidence Of Poultry Diseases, L. Van Es, J. F. Olney Mar 1940

An Inquiry Into The Influence Of Environment On The Incidence Of Poultry Diseases, L. Van Es, J. F. Olney

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The principal purpose of the investigation reported here was to evaluate, if possible, hygienic measures, and in addition to gather whatever information might become available pertaining to the relation of certain disorders to a given poultry population after its exposure to their specific etiologic factors. The experiments were conducted on a piece of ground upon which poultry had not been maintained for many years, if ever.

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Vegetative Composition And Grazing Capacity Of A Typical Area Of Nebraska Sandhill Range Land, A. L. Frolik, W. O. Shepherd Mar 1940

Vegetative Composition And Grazing Capacity Of A Typical Area Of Nebraska Sandhill Range Land, A. L. Frolik, W. O. Shepherd

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The sandhill area of Nebraska occupies approximately 20,000 square miles of the central portion of the state. Being unadapted to cultivation, the land is for the most part still covered with native vegetation. It is utilized primarily for the production of livestock, chiefly cattle. During the period 1931 to 1938 the sandhills carried annually an average of 1,041,000 cattle, which amounted to 31 per cent of the total number in the state. The management practices used in the Nebraska sandhills have gained national recognition as a good example of range conservation in the United States. The purpose of this study …

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The Utilization Of Food Elements By Growing Chicks. Viii. A Comparison Of Alfalfa Meal And Artificially Dried Sudan Grass Meal In Rations For Growing Chicks, C. W. Ackerson, M. J. Blish, F. E. Mussehl Dec 1939

The Utilization Of Food Elements By Growing Chicks. Viii. A Comparison Of Alfalfa Meal And Artificially Dried Sudan Grass Meal In Rations For Growing Chicks, C. W. Ackerson, M. J. Blish, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. The effect of replacing the ten parts of alfalfa meal in a ration with artificially dried Sudan-grass meal on an equivalent protein basis was studied in a growth and body-analysis experiment with two lots of day-old chicks. 2. The chicks of both lots consumed equal amounts of dry matter during the feeding trial. 3. There were no significant differences in the growth rate or composition of the chicks at the end of a six weeks' feeding trial.

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The Effects Of Stinking Smut (Bunt) And Seed Treatment Upon The Yield Of Winter Wheat, T. A. Kiesselbach, W. E. Lyness Apr 1939

The Effects Of Stinking Smut (Bunt) And Seed Treatment Upon The Yield Of Winter Wheat, T. A. Kiesselbach, W. E. Lyness

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The depreciating effects of bunt or stinking smut (Tilletia levis Kuhn and tritici [Bjerk.] Wint.) upon the yield and quality of winter wheat in Nebraska and many other states are well known. The practical control of this disease through seed treatment has also been established and is being extensively practiced by growers. At the time these experiments were initiated in 1923, formaldehyde was the most commonly used disinfectant, while copper carbonate was just gaining recognition following its introduction by Darnell-Smith in 1915. It has been the chief purpose of the investigations herein reported to study the relative merits of …

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The Utilization Of Food Elements By Growing Chicks. Vii. A Comparison Of Corn And Kalo In A Ration For Growing Chicks, C. W. Ackerson, M. J. Blish, F. E. Mussehl Mar 1939

The Utilization Of Food Elements By Growing Chicks. Vii. A Comparison Of Corn And Kalo In A Ration For Growing Chicks, C. W. Ackerson, M. J. Blish, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. The effect of replacing 31 per cent of ground corn in a ration by 31 per cent of ground kalo was studied in a growth and body-analysis experiment with two lots of newly hatched chicks. 2. The amounts of feed consumed by all chicks of both lots were kept identical by hand-feeding equal amounts of the pelleted rations daily. 3. There were no significant differences in the growth rate or composition of the chicks at the end of a six weeks' feeding trial.

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The Utilization Of Food Elements By Growing Chicks. Vi. The Influence Of The Protein Level Of The Ration On The Growth Of Chicks, C. W. Ackerson, M. J. Blish, F. E. Mussehl Feb 1939

The Utilization Of Food Elements By Growing Chicks. Vi. The Influence Of The Protein Level Of The Ration On The Growth Of Chicks, C. W. Ackerson, M. J. Blish, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. Two rations containing 16 and 22 per cent of protein respectively were fed to newly hatched chicks in two series of feeding trials. In one series the lower protein level was secured by diluting the higher with 30 parts of starch so that the amount but not the quality of the protein was changed. In the other series the amount and quality of the protein both varied since the two rations were mixed by using different proportions of the base and concentrate to yield the 16 and 22 per cent levels in the finished rations. 2. Comparisons were made …

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Land Transfers In Twelve Counties In Nebraska, 1928-1933, L. F. Garey Nov 1938

Land Transfers In Twelve Counties In Nebraska, 1928-1933, L. F. Garey

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The land transfers in twelve counties in Nebraska for the period 1928 to 1933 have been studied and the findings are submitted in this bulletin. The data on which the study is based were obtained from records in the office of the Register of Deeds in each county and from other sources and include transfers which occurred during the period indicated. The counties included in the study are Boone, Cass, Cuming, Dakota, Dawes, Frontier, Gage, Hamilton, Harlan, Lancaster, Nuckolls, and Valley.

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The Tax System Of Nebraska With Special Reference To Its Relation To Agriculture, L. B. Snyder Oct 1938

The Tax System Of Nebraska With Special Reference To Its Relation To Agriculture, L. B. Snyder

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Progress in governmental affairs calls for constant study of matters pertaining to government. The recent agitation for moratoria on debts and taxes and the many tax reforms suggested are evidence of the need for such study. Before satisfactory reforms can be made, information on receipts and expenditures by governmental agencies must be secured. The expense connected with collecting, tabulating, and analyzing such data has prevented private agencies of the state from doing this. Because it was felt that such information would be useful and could be obtained by the College of Agriculture, this study was undertaken.

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Influence Of Age Of Dairy Cattle And Season Of The Year On The Sex Ratio Of Calves And Services Required For Conception, R. F. Morgan, H. P. Davis Aug 1938

Influence Of Age Of Dairy Cattle And Season Of The Year On The Sex Ratio Of Calves And Services Required For Conception, R. F. Morgan, H. P. Davis

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The present study was based on records of the dairy herd of the University of Nebraska for the period 1896 to 1934, and covers five breeds, Holsteins, Jerseys, Guernseys, Ayrshires, and milking Shorthorns. In all, 2,090 cows have been included. The purpose was to determine the influence of the age of the bull, the age of the cow, and the season of the year upon the number of services required for conception, and to determine also the influence of these factors upon the sex ratio of calves born, number of twins born, and the percentage of abortion.

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Wound Healing In Potatoes (Triumph Variety) As Influenced By Type Of Injury, Nature Of Initial Exposure, And Storage Conditions, H. O. Werner Jul 1938

Wound Healing In Potatoes (Triumph Variety) As Influenced By Type Of Injury, Nature Of Initial Exposure, And Storage Conditions, H. O. Werner

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Tubers of the Triumph variety of potatoes, the one most extensively grown in western Nebraska, are more susceptible than those of other varieties to the various types of injury that occur at harvest time. This greater susceptibility is chiefly the result of long stolons, unusual tenderness of skin, and ease with which the tubers crack. The two latter characteristics have been accentuated by the custom of late planting adopted generally throughout the region in recent years. Many of the difficulties could be avoided by growing another variety. However, as there now seems to be no other variety as well adapted …

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