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Historical Research Bulletins of the Nebraska Agricultural Experiment Station

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Forage Quality Evaluations Of Twelve Grasses In Relation To Season For Grazing, L. C. Newell, W. J. Moline Aug 1978

Forage Quality Evaluations Of Twelve Grasses In Relation To Season For Grazing, L. C. Newell, W. J. Moline

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

A study of forage quality in relation to seasonal yield of important perennial forage grasses was initiated to provide information and to promote a better understanding of their best use for grazing. This information should be particularly valuable in planning seasonal use of pure stands or mixtures of grasses.

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Results Of The Eighth International Winter Wheat Performance Nursery Grown In 1976, K. D. Wilhelmi, S. L. Kuhr, V. A. Johnson, P. J. Mattern, J. W. Schmidt Jul 1978

Results Of The Eighth International Winter Wheat Performance Nursery Grown In 1976, K. D. Wilhelmi, S. L. Kuhr, V. A. Johnson, P. J. Mattern, J. W. Schmidt

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This is the eighth report of results from an International Winter Wheat Performance Nursery (IWWPN) organized in 1968 by the Nebraska Agricultural Experiment Station and the Science and Education Administration (SEA), U.S. Department of Agriculture, under a contract with the Agency for International Development, U.S. Department of State. The Nursery was designed to (1) test the adaptation and stability of winter wheat cultivars in a range of latitudes, daylengths, fertility conditions, water management regimes, and disease complexes; (2) identify superior winter cultivars to serve as recipient genotypes for high protein and high lysine genes, (3) test the degree of expression …

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Sulfur Fertilization Of Alfalfa And Corn On The Sandy Soils Of Nebraska, G. W. Rehm Jul 1978

Sulfur Fertilization Of Alfalfa And Corn On The Sandy Soils Of Nebraska, G. W. Rehm

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Objectives of these studies were: 1. To determine the effect of various S fertilizers and rates of S application on the yield of both alfalfa and corn grown on sandy soils. 2. To determine the residual effects of a single application of S fertilizer on the production of alfalfa. 3. To measure the influence of S fertilizers and the rate of S applied on the S content of corn and alfalfa tissue and S uptake by these two crops. 4. To develop a soil testing procedure which accurately predicts the requirement for the application of S fertilizers to alfalfa and …

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Results Of The First High Protein-High Lysine Wheat Observation Nursery Grown In 1975, K. D. Wilhelmi, S. L. Kuhr, V. A. Johnson, P. J. Mattern Apr 1978

Results Of The First High Protein-High Lysine Wheat Observation Nursery Grown In 1975, K. D. Wilhelmi, S. L. Kuhr, V. A. Johnson, P. J. Mattern

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This is the first report of results from a high protein-high lysine observation (HP-HL) nursery organized in 1974 by the Nebraska Agricultural Experiment Station and the Agricultural Research Service, U.S. Department of Agriculture, under a contract with the Agency for International Development, U.S. Department of State. Primary objectives of this nursery are to: (1) Systematically provide breeders and cooperators with superior genetic germplasm for elevated levels of protein and/or lysine. (2) Test the degree of expression of the high protein and high lysine traits in a diverse array of environments.

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Results Of The Seventh International Winter Wheat Performance Nursery Grown In 1975, K. D. Wilhelmi, S. L. Kuhr, V. A. Johnson, P. J. Mattern, J. W. Schmidt Oct 1977

Results Of The Seventh International Winter Wheat Performance Nursery Grown In 1975, K. D. Wilhelmi, S. L. Kuhr, V. A. Johnson, P. J. Mattern, J. W. Schmidt

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This is the seventh report of results from an International Winter Wheat Performance Nursery (IWWPN) organized in 1968 by the Nebraska Agricultural Experiment Station and the Agricultural Research Service, U.S. Department of Agriculture, under a contract with the Agency for International Development, U.S. Department of State. The Nursery was designed to (1) test the adaptation of winter wheat cultivars in a range of latitudes, daylengths, fertility conditions, water management regimes, and disease complexes; (2) identify superior winter cultivars to serve as recipient genotypes for high protein and high lysine genes, and (3) test the degree of expression and stability of …

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Growing Degree Days Predictions For Corn And Sorghum Development And Some Applications To Crop Production In Nebraska, R. E. Neild, M. W. Seeley Mar 1977

Growing Degree Days Predictions For Corn And Sorghum Development And Some Applications To Crop Production In Nebraska, R. E. Neild, M. W. Seeley

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The concept of growing degree days (GDD) originated with observations by Reamur (1735) that plant development is more closely related to the temperature accumulated to a given stage than with time alone. It was not until nearly 200 years later, however, that Merriam (1894), Livingston (1916) and Klages (1942) began to use temperature accumulations in plant distribution studies and in crop geography. In the early 1950's, a system involving growing degree days became widely used in the canning industry to schedule plantings and thus control time of harvest of rapidly maturing vegetables. This system provided a more precise control of …

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Results Of The Sixth International Winter Wheat Performance Nursery Grown In 1974, K. D. Wilhelmi, S. L. Kuhr, V. A. Johnson, P. J. Mattern, J. W. Schmidt Dec 1976

Results Of The Sixth International Winter Wheat Performance Nursery Grown In 1974, K. D. Wilhelmi, S. L. Kuhr, V. A. Johnson, P. J. Mattern, J. W. Schmidt

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This is the sixth report of results from an International Winter Wheat Performance Nursery (IWWPN) organized in 1968 by the Nebraska Agricultural Experiment Station and the Agricultural Research Service, U. S. Department of Agriculture, under a contract with the Agency for International Development, U.S. Department of State. The Nursery was designed to (1) test the adaptation of winter wheat cultivars in a range of latitudes, daylengths, fertility conditions, water management, and disease complexes; (2) identify superior winter cultivars to serve as recipient genotypes for high protein and high lysine genes, and (3) test the degree of expression and stability of …

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Performance Of Certified Seed Lots Of Dawson Alfalfa, W. R. Kehr, G. R. Manglitz Aug 1976

Performance Of Certified Seed Lots Of Dawson Alfalfa, W. R. Kehr, G. R. Manglitz

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Breeder, foundation, and certified seed lots of Dawson alfalfa, Medicago sativa L., were tested to determine stability in performance during three generations of seed increase under certification. Two field experiments were conducted, a seeded forage yield test and a space-planted test. Greenhouse experiments included separate tests for resistance to pea aphids, spotted alfalfa aphids, and bacterial wilt. Results obtained on certified Dawson alfalfa seed classes in field and greenhouse experiments were in agreement with the original variety description.

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Results Of The Fifth International Winter Wheat Performance Nursery Grown In 1973, J. E. Stroike, K. D. Wilhelmi, V. A. Johnson, J. W. Schmidt, P. J. Mattern Apr 1976

Results Of The Fifth International Winter Wheat Performance Nursery Grown In 1973, J. E. Stroike, K. D. Wilhelmi, V. A. Johnson, J. W. Schmidt, P. J. Mattern

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This is the fifth report of results from an International Winter Wheat Performance Nursery (IWWPN) organized in 1968 by the Nebraska Agricultural Experiment Station and the Agricultural Research Service, U. S. Department of Agriculture, under a contract with the Agency for International Development, U. S. Department of State. The Nursery was designed to (1) test the adaptation of winter wheat cultivars in a range of latitudes, daylengths, fertility conditions, water management, and disease complexes; (2) identify superior winter cultivars to serve as recipient genotypes for high protein and high lysine genes, and (3) test the degree of expression and stability …

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Management Of Four Alfalfa Varieties To Control Damage From Potato Leafhoppers, W. R. Kehr, R. L. Ogden, J. D. Kindler Dec 1975

Management Of Four Alfalfa Varieties To Control Damage From Potato Leafhoppers, W. R. Kehr, R. L. Ogden, J. D. Kindler

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The main purpose of this study was to obtain information on forage yield and quality of four alfalfa (Medicago sativa L.) varieties that differed in level of resistance to potato leafhopper (Empoasca fabae Harris) yellowing, when cut at three stages of growth in the second and third cuttings in field plots, with and without insecticide application. The stages of growth were bud, 1/10, and full bloom. Other purposes included study of the same varieties in field cages manually infested at 20, 40, and 60 adult leafhoppers/square yard, and in supplemental cuttings of field plots under high natural infestation …

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Reevaluation Of Common Wheats From The Usda World Wheat Collection For Protein And Lysine Content, K. P. Vogel, V. A. Johnson, P. J. Mattern Nov 1975

Reevaluation Of Common Wheats From The Usda World Wheat Collection For Protein And Lysine Content, K. P. Vogel, V. A. Johnson, P. J. Mattern

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The protein and lysine content of wheat can be altered by breeding only if genetic variability exists for these traits. Lysine is a nutritionally limiting amino acid in wheat protein. Protein and lysine analyses of the common wheats of the USDA World Wheat Collection indicated that variability does exist for these traits. Some of the variability for protein and lysine among wheats of the World Collection may not be genetic in origin, because all the 12,000 wheats analyzed were not grown in the same environment. The purpose of this study was to reevaluate selected lines from the World Wheat Collection …

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An Economic Information Program For The U.S. Beef And Pork Sectors, N. A. Aulaqi, J. B. Hassler Aug 1975

An Economic Information Program For The U.S. Beef And Pork Sectors, N. A. Aulaqi, J. B. Hassler

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Major objectives of the study were: first, to review present public data programs and to indicate areas of inefficient performance in the production and marketing of beef and pork that still exist under the present data system; second, to simulate an operational information service program for the beef and pork sectors based on programmed solutions for industry allocations and activities; and third, to outline possible implementation procedures for the information service programs and to indicate the role of each of the participants in making it successful.

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Physical And Chemical Properties Of Outdoor Beef Cattle Feedlot Runoff, C. B. Gilbertson, J. R. Ellis, J. A. Nienaber, T. M. Mccalla, T. J. Klopfenstein Aug 1975

Physical And Chemical Properties Of Outdoor Beef Cattle Feedlot Runoff, C. B. Gilbertson, J. R. Ellis, J. A. Nienaber, T. M. Mccalla, T. J. Klopfenstein

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Within the past decade, emphasis has been placed on the quality of our environment. Beef cattle feedlots have been singled out as a significant source of environmental pollution. Environmental protection provided by control facilities requires basic knowledge of the physical and chemical properties of feedlot runoff. This bulletin summarizes studies of physical and chemical properties of beef cattle feedlot runoff completed from August, 1968 through December, 1972.

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Bionomics Of Insects Associated With Corn In The Nebraska Sandhills, J. L. Wedberg, J. B. Campbell, T. J. Helms Jul 1975

Bionomics Of Insects Associated With Corn In The Nebraska Sandhills, J. L. Wedberg, J. B. Campbell, T. J. Helms

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Investigations were conducted in the Nebraska Sandhills to determine the impact of transition from grassland to irrigated corn on selected insect species, to identify indigenous species that may be economically important to corn production, and to provide a point of reference for future development of pest management programs for irrigated corn.

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Leaf Freckles And Wilt Of Corn Incited By Corynebacterium Nebraskense Schuster, Hoff, Mandel, Lazar, 1972, M. L. Schuster May 1975

Leaf Freckles And Wilt Of Corn Incited By Corynebacterium Nebraskense Schuster, Hoff, Mandel, Lazar, 1972, M. L. Schuster

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The new bacterial disease Leaf Freckles and Wilt (LFW) of corn (Zea mays L.) was first observed in 1969 on two farms in southcentral Nebraska. Since then it has spread to other areas in the state. LFW is a serious disease on farms in six Nebraska counties (Clay, Custer, Dawson, Furnas, Hall and Phelps) and has been found in isolated cases in at least 28 other counties. In 1971 LFW was found in a seedcorn field in western Iowa, in 1973 in two Kansas counties, and in 1974 in South Dakota and Colorado. Because of its explosive nature, several …

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A Rate/Cost Analysis Of Nebraska Meat Trucking Activities With Livestock Trucking Cost Comparisons, Dale G. Anderson, Wayne W. Budt Mar 1975

A Rate/Cost Analysis Of Nebraska Meat Trucking Activities With Livestock Trucking Cost Comparisons, Dale G. Anderson, Wayne W. Budt

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This study was designed to measure costs of long-distance shipment of meat by motor carrier. Costs were compared with published rates for meat shipments by truck, rail and trailer-on-flatcar (TOFC). Finally, meat trucking costs were compared with costs of trucking meat-equivalent amounts of livestock. Results of the study provide a partial basis for evaluating the economic merits of expanded livestock production activities in grain-surplus Great Plains locations. Such an expansion might aid in the economic development of the region and ease the chronic problem of rail freight-car supply. Proposals ranging from extension of present regulation to cover livestock trucking to …

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Survival Factors Of Plant Pathogenic Bacteria, M. L. Schuster, D. P. Coyne Feb 1975

Survival Factors Of Plant Pathogenic Bacteria, M. L. Schuster, D. P. Coyne

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The research works discussed in this review were selected to provide a cross section of the phenomenon of survival of plant pathogenic bacteria.

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Growth Potential Of Sandhills Ranches Through Irrigation, R. D. Carver, G. A. Helmers Jan 1975

Growth Potential Of Sandhills Ranches Through Irrigation, R. D. Carver, G. A. Helmers

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The purpose of this study was to compare extensive and intensive growth strategies of a typical Nebraska Sandhills ranch in a dynamic and uncertain environment. Study objectives were to: (1) Analyze growth of an average ranch firm of 450 animal units as it grows to 600-900 animal units. (2) Study the effects of an uncertain environment on the long-run growth opportunities of a ranch firm. (3) Compare extensive and intensive growth of a ranch firm.

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Results Of The Fourth International Winter Wheat Performance Nursery, J. E. Stroike, V. A. Johnson, J. W. Schmidt, P. J. Mattern, K. D. Wilhelmi Oct 1974

Results Of The Fourth International Winter Wheat Performance Nursery, J. E. Stroike, V. A. Johnson, J. W. Schmidt, P. J. Mattern, K. D. Wilhelmi

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The Fourth International Winter Wheat Performance Nursery was grown in 1972 at 44 sites in 27 countries. Data were reported from 40 sites. The 30 cultivars grown in the nursery included 15 new entries. Twenty-nine cultivars were winter wheats; one was a spring wheat. Data are reported on grain yield, test weight, plant maturity, plant height, lodging, shattering, winter survival, 1000 kernel weight, frost damage, plant diseases, grain protein and lysine content. Two-year mean data summaries also are reported. Supplemental nursery management information is reported for each nursery site.

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Structural And Operational Characteristics Of Nebraska And Kansas Feeder-Cattle Growing Operations, J. L. Jorgensen, J. G. Kendrick, A. C. Wellman, J. H. Mccoy, J. W. Koudele, Q. C. Smith Aug 1974

Structural And Operational Characteristics Of Nebraska And Kansas Feeder-Cattle Growing Operations, J. L. Jorgensen, J. G. Kendrick, A. C. Wellman, J. H. Mccoy, J. W. Koudele, Q. C. Smith

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The beef cattle industry is experiencing a significant increase in demand for feeder cattle. Current difficulties in obtaining sufficient numbers of feeder cattle on a continuing basis have put pressures on the feeder cattle marketing system that did not exist in the past. Feedlot operators, growers (backgrounders), and cow-herd operators are looking for ways and means of improving the system. Innovations are being tested. Those circumstances prompted personnel of the Agricultural Experiment Stations of Kansas and Nebraska to undertake a joint study of cattle marketing under a Regional Research Project.

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Nutrient And Energy Composition Of Beef Cattle Feedlot Waste Fractions, C. B. Gilbertson, J. A. Nienaber, J. R. Ellis, T. M. Mccalla, T. J. Klopfenstein, S. D. Farlin Jul 1974

Nutrient And Energy Composition Of Beef Cattle Feedlot Waste Fractions, C. B. Gilbertson, J. A. Nienaber, J. R. Ellis, T. M. Mccalla, T. J. Klopfenstein, S. D. Farlin

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This bulletin describes nutrient and energy composition of beef cattle waste fractions as a function of the ration roughage level and type of feedlot. Results can be used to plan engineering system approaches and research to develop handling and processing equipment necessary for recovery of the most valuable portion of waste.

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Economies Of Size, Volume And Diversification In Retail Grain And Farm Supply Businesses, D. G. Anderson, D. L. Helgeson Apr 1974

Economies Of Size, Volume And Diversification In Retail Grain And Farm Supply Businesses, D. G. Anderson, D. L. Helgeson

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This study revealed substantial cost savings could accrue to grain and farm supply businesses from plants of larger size. Given sufficient competitive pressures, farmers and consumers might benefit as well from these savings. A continuation of the present trend toward larger, more diverse firms seems likely. Existing firms of sub-optimum size and product structures will probably remain in operation until they are depreciated out. Relatively modest savings from diversified structures make any rapid trend toward one-stop centers unlikely.

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The Effect Of 2,4-D, Grazing Management And Nitrogen Fertilizer On Pasture Production, M. K. Mccarty, M. L. Cox, D. L. Linscott Mar 1974

The Effect Of 2,4-D, Grazing Management And Nitrogen Fertilizer On Pasture Production, M. K. Mccarty, M. L. Cox, D. L. Linscott

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Many pastures in eastern Nebraska and surrounding areas have gradually decreased in productivity. Over a long period of heavy grazing, native warm-season grasses have been largely replaced with Kentucky bluegrass, other less desirable grasses, and broadleaf weeds. A program was started in 1949 to study the effectiveness of protection from grazing in changing the botanical composition and yield of a pasture where the predominant forage was Kentucky bluegrass. Several weed control treatments were included in this experiment to determine if mowing or spraying would hasten the return of more desirable forage. After weed control and differential grazing treatments had been …

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A Mode Of Action Of Herbicides: Inhibition Of The Normal Process Of Nitrite Reduction, Lowell Klepper Feb 1974

A Mode Of Action Of Herbicides: Inhibition Of The Normal Process Of Nitrite Reduction, Lowell Klepper

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Herbicides were shown to interfere in the normal process of enzymatic nitrite reduction by the plant in photosynthetic and nonphotosynthetic plant tissues with little effect on nitrate reduction. This preferential inhibition caused nitrite to accumulate. The occurrence of free nitrite within the plant can help to explain the toxicity symptoms, nastic growth reactions, abnormal metabolism and rapid death due to herbicide action. This blockage of nitrite reduction was shown with all photosynthetic inhibitor herbicides tested and with numerous other herbicides. The effect was demonstrated using an in vivo assay, intact green plants and germinating seedlings. A basic in vivo method …

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Results Of The Third International Winter Wheat Performance Nursery, J. E. Stroike, V. A. Johnson, J. W. Schmidt, P. J. Mattern, K. D. Wilhelmi Nov 1973

Results Of The Third International Winter Wheat Performance Nursery, J. E. Stroike, V. A. Johnson, J. W. Schmidt, P. J. Mattern, K. D. Wilhelmi

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This is the third report of results from an International Winter Wheat Performance Nursery (IWWPN) organized in 1968 by the Nebraska Agricultural Experiment Station and the Agricultural Research Service, U.S. Department of Agriculture, under a contract with the Agency for International Development, U.S. Department of State. The nursery was designed to (1) test the adaptation of winter wheat varieties in a range of latitudes, daylengths, fertility conditions, water management, and disease complexes; (2) identify superior winter varieties to serve as recipient genotypes for high protein and high lysine genes, and (3) test the degree of expression and stability of the …

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Results Of Systematic Analyses For Protein And Lysine Composition Of Common Wheats (Triticum Aestivum L.) In The Usda World Collection, K. P. Vogel, V. A. Johnson, P. J. Mattern Nov 1973

Results Of Systematic Analyses For Protein And Lysine Composition Of Common Wheats (Triticum Aestivum L.) In The Usda World Collection, K. P. Vogel, V. A. Johnson, P. J. Mattern

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Protein and lysine contents of 12,613 common wheats of the USDA World Wheat Collection were determined in order to identify wheats that may be sources of genes for high protein and high lysine. Results indicate that significant genetic differences in protein and lysine content probably exist among world collection common wheats. Selection criteria have been developed for further evaluation of World Collection lines high in protein and lysine content.

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Polyperiod Analyses Of Investment Strategy For Nebraska Grain-Livestock Farms, Glenn A. Helmers, Gary W. Lentz Oct 1973

Polyperiod Analyses Of Investment Strategy For Nebraska Grain-Livestock Farms, Glenn A. Helmers, Gary W. Lentz

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This study is directed toward investment strategies farm firms in the Great Plains may utilize to achieve their individual goals. Farm firm growth is considered important to the extent that firm growth represents movement toward meeting the behavioral goals of farm operators.

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Beef Cattle - At What Weight Should They Be Sold?, Franz Schwarz, J. B. Hassler Jul 1973

Beef Cattle - At What Weight Should They Be Sold?, Franz Schwarz, J. B. Hassler

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Specific objectives of this study are: (1) To evaluate the recent historical price relationships of the beef sector indicative of profit and loss conditions caused by disorderly aggregate performance in production and marketing. (2) To analyze the risks involved at various positions in the chain of production and marketing activities. (3) To suggest information and action programs which could reduce the amount of disorderly production and marketing.

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Seasonal Abundance Of The European Corn Borer Ostrinia Nubilalis (Hbn.) Within The North Central United States, R. E. Hill, H. C. Chiang, A. J. Keaster, W. B. Showers, G. L. Reed Jul 1973

Seasonal Abundance Of The European Corn Borer Ostrinia Nubilalis (Hbn.) Within The North Central United States, R. E. Hill, H. C. Chiang, A. J. Keaster, W. B. Showers, G. L. Reed

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Annual changes in corn borer populations in the North Central States were measured as a phase of a Regional Project, NC-20, entitled "Factors Influencing Corn Borer Populations" in Minnesota, Iowa, Kansas, Nebraska, Missouri and Ohio over a period of years. Standardized procedures were followed to estimate the seasonal abundance of the European corn borer, Ostrinia nubilalis (Hbn.), under cropping procedures in different locations within the North Central States. The primary purpose of the present bulletin is to present results for the 1965 to 1969 period and to compare these results with the previous 10 years and thus attempt to analyze …

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Motion And Time Studies Of Milking Parlors And Routines, R. D. Appleman, C. F. Micke Mar 1973

Motion And Time Studies Of Milking Parlors And Routines, R. D. Appleman, C. F. Micke

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This study defines and describes the parameters of milking in both the elevated side-opening and herringbone style milking parlor. Included in this "motion and time" study are measurements of differences in milking routines or techniques, as well as the probable contribution of certain mechanical aids, including both crowd gates and group-washing systems. Milker (men) differences are also identified. Detailed measurements of time requirements for specific milking activities or chores are expensive to obtain. Very limited data are found in the scientific literature. This bulletin is published to supply resource data which may be used in planning milking parlors or as …

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