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Central Crops And Soils Research Station Highmore, South Dakota: Annual Progress Report, 1975, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1975 progress report for the Central Crops and Soils Research Station at Highmore, South Dakota State College. This document represents the research conducted at the Station during the 1975 crop season including: weather data, tillage and fertility experiments, spring wheat yields, sorghum testing, horticulture, sunflowers, and experiments conducted in 1975.

West River Agricultural Research And Extension Center Progress Report, 1975, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1975 annual progress report of the West River Crops Soils Research and Extension Center, South Dakota Agricultural Experiment Station. This report includes: a weather summary, small grain variety trials, specialty crop variety trials, sorghum variety testing, irrigated alfalfa trials, water management trials, management, tillage and cultural practices, fertilizer studies on winter wheat, crop diseases and their control, and plot information.

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 …

Southeast South Dakota Experiment Farm Annual Progress Report, 1975, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This fifteenth annual report of the research program at the Southeast South Dakota Experiment Farm has special significance for those engaged in agriculture and the agriculturally related businesses in the nine county area of southeast South Dakota. Reports in this document include information on: temperatures and precipitation data, corn breeding and performance, rootworm control soybean research and planting, crop rotation, grain trials, and swine production.

Contents Of Chlorophylls A And B In Chlorophyll-Deficient Mutants Of Sweetclover, James E. Specht, Francis A. Haskins, H. J. Gorz

Department of Agronomy and Horticulture: Faculty Publications

Leaf extracts from twelve chlorophyll-deficient mutants of sweetclover (Melilotus alba Desr.) were compared spectrophotometrically and chromatographically with extracts from normal plants to determine contents of chlorophylls a and b Total chlorophyll contents in cotyledons and leaves of all mutants were significantly lower than those in corresponding tissues of normal plants. Chlorophyll contents were generally higher in later emerging leaves of both normal and mutant plants. Chlorophyll alb ratios in first trifoliolate leaves were similar to normal in mutants ch₇ and ch₈, higher in mutants ch₈, ch₉, ch₁₀, and ch_{11 …}

Tobacco Farming: The Persistence Of Tradition, Eugene Umberger Jr.

Masters Theses & Specialist Projects

The culture of tobacco has been associated with the history of Kentucky almost from the beginning and remains to this day a vital force in the state’s economy. In this age of scientific and technological advances – of increasing automation – we find that in tobacco farming, hand labor still figures prominently in the production of a major staple crop. This has resulted in the retention of traditional method, technology and terminology, long since lost in the culture of other crops which lent themselves more easily to mechanization.

The study is divided into three parts. Chapter I deals briefly with …

The Prairie Naturalist Vol. 7, No.4. December 1975

The Prairie Naturalist

COMPARISON OF FLOWERING RECORDS FROM KANSAS AND NORTH DAKOTA ▪ O. A. Stevens

REPAIRED BONE BREAK IN A HOUSE SPARROW ▪ C. L. Cink and T. K. Broschat

A LARGE RACOON LITTER ▪ E. K. Fritzell and J. W. Matthews

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA –1975 ▪ R. N. Randall

BOOK REVIEW

Autumn Hawk Migrations ▪ P. B. Hofslund

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 …

Isolation And Identification Of Mycoplasma Agalactiae Subsp. Bovis From Arthritic Cattle In Iowa And Nebraska, O.H. V. Stalheim, S.S. Stone

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Two strains of Mycoplasma were isolated from synovial fluids of arthritic feeder cattle and were identified as Mycoplasma agalactiae subsp. bovis by growth inhibition and fluorescent antibody tests. The strains (Iowa 1136 and Nebraska 2) could not be distinguished from known strains (Donetta and California 01) by immunoelectrophoresis or by agar gel precipitation.

The Prairie Naturalist Vol. 7 , Nos. 2 And 3. June-September, 1975

The Prairie Naturalist

VASCULAR FLORA OF EMMONS COUNTY, NORTH DAKOTA ▪ R. P Williams and W. T. Barker

NOTES

Unusual Nesting Site of Barn Swallows ▪ W. A. Buresh

Summer Tanager in Burleigh County, North Dakota ▪ W. A. Buresh

Additional Record of Summer Tanager in North Dakota ▪ J. F. Cassel

Snowy Owl in McHenry County, North Dakota, in May ▪ W. A. Buresh

Seedling Growth Of Three Switchgrass Strains, L. J. Perry Jr., Lowell E. Moser

Department of Agronomy and Horticulture: Faculty Publications

Seedlings of Pathfinder, Nebr. 28, and experimental ey switchgrass (Panicum virgatum L.) strains were grown in a growth chamber and harvested 1, 2, 3, 4, 6, 8, and 10 weeks following emergence for detection of seedling growth differences among strains. Leaf areas and dry weights of leaf blade and stem axis (stem and leaf sheath) generally increased significantly with each harvest from 4 to 10 weeks. Stem axis and leaf blade dry weights were significantly greater with Pathfinder and ey, respectively, than with Nebr. 28. Final leaf area was significantly greater with ey than with the other strains. Thus, …

Pollution Of Surface Irrigation Waters By Plant Pathogenic Organisms, James R. Steadman, C. R. Maier, H. F. Schwartz, E. D. Kerr

Department of Plant Pathology: Faculty Publications

Systematic sampling of waterways and irrigation runoff from agricultural lands in the North Platte Project of Nebraska in July and August of 1972–1974 demonstrated that phytopathogenic organisms were disseminated. The organisms monitored included the bean common blight bacterium Xanthomonas phaseoli, the bean white mold fungus Whetzelinia sclerotiorum and various nematodes. Although many types of nematodes often were recovered from irrigation water, Heterodera sp. cysts which cause significant disease problems in the valley were found infrequently. Patterns of movement of the bacterial and fungal organisms were correlated with previous or current season infection of bean plants. The short-term survival of X. …

Forestry Report, P. Sims, G. Steneker, K. Fronting, C. Kirby, P. Van Eck, H. Johnson, N. Walker, R. Bohning, L. Carlson, I. Bella, W. Johnstone, R. Waldron, L. Brace

Aspen Bibliography

No abstract provided.

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.

Bulletin No. 21: Energy Conservation On The Home Grounds: The Role Of Naturalistic Landscaping, William A. Niering, Richard H. Goodwin

Bulletins

No abstract provided.

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 …

Structure & Composition Of A Climax Forest System In Boone County, Kentucky, Michael Held

Masters Theses & Specialist Projects

The structure and composition of a 52 hectare mature mesic hardwood forest in Boone County, Kentucky was studied during 1973-74. Acer saccharum was the dominant tree species of the entire forest, with Fraxinus americana as the subdominant. In the understory vegetation, Acer and Fraxinus were among the dominant genera, thus this forest system can be described as being at the climax stage of development. A previously cleared area in the forest was also analyzed. It was found that the dominant tree species of the canopy were also dominant in the genera of the understory in the disturbed area, indicating a …

Resistance Of Red Clover To The Clover Leaf Weevil, H. J. Gorz, G. R. Manglitz, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

Red clover (Trifolium pretense L.) varieties in the third season of growth, that had been exposed to a heavy infestation of larvae of the clover leaf weevil [Hypera punctata (Fabricius)], differed significantly in percentage defoliation, feeding injury score, plant height, and forage production. Based on these four characters, 'Mammoth,' 'Lakeland,' 'Dollard,' and 'LaSalle' were highly resistant to larval feeding; 'Kenland,' 'Common,' and 'Pennscott' were highly susceptible. Long term second-season yield tests including six of these varieties indicated no con• sistent superiority of any of the varieties in the absence of weevil feeding.

Inheritance Of Seed And Seedling Color In Sweetclover, H. J. Gorz, James E. Specht, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

Eight seed colors, conditioned by two independent pairs of genes, were identified in sweetclover (Melilotus alba Desr.). The seed colors resulted from all combinations of two embryo and four seed coat phenotypes. Only four of the seed colors were recoverable in true-breeding form. Conventional genetic tests revealed that Y /y alleles determined the absence or presence, respectively, of green pigmentation in both the embryo and seed coat of fully mature seeds. Absence of green was dominant in both seed parts. The C/c alleles conditioned the presence or absence, respectively, of brownish pigmentation in the seed coat and red pigmentation …

Genetic Studies Of Induced Mutants In Melilotus Alba. Iv. Inheritance And Complementation Of Six Additional Chlorophyll-Deficient Mutants, R. R. Ronnenkamp, H. J. Gorz, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

Six ethyl methanesulfonate-induced chlorophyll-deficient mutants of Melilotus alba Desr. were studied. Each of the mutants behaved as a monogenic recessive. Complementation analysis revealed that the genes from five of the mutants were nonallelic to each other and to the previously reported mutants ch₄, ch₅, ch₆, and ch₇ Proposed symbols for the five genes are ch₈, ch₉, ch₁₀, ch₁₁, and ch₁₂. No linkage was detected between ch₅ and ch₇, ch₇ and M_f, (multifoliolate leaf), ch₈ and ch …

James Valley Agricultural Research And Extension Center Annual Progress Report, 1975, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1975 progress report for the James Valley Agricultural Research and Extension Center. The reports in this document represent the research conducted at the Center during 1974. The report includes weather data, information on crop production, irrigation, performance and variety test, and fertilizer usage.

Intermediates In The Biosynthesis Of Double-Stranded Ribonucleic Acids Of Bacteriophage Φ6, D. L. Coplin, James L. Van Etten, James A. Koski, A. K. Vidaver

Department of Plant Pathology: Faculty Publications

Pseudomonas phaseolicola infected with bacteriophage φ6 synthesized all three viral double-stranded RNA segments, three single-stranded RNAs, and three replicative intermediate-like RNAs in the presence of rifampin. The single-stranded RNA intermediates sedimented and electrophoresed along with melted viral double-stranded RNA, annealed with melted viral double-stranded RNA, and were transient in nature. The relative amounts of the single-stranded RNA intermediates varied during the infection cycle and were altered in the presence of chloramphenicol. The replicative intermediate-like RNAs sedimented faster than double-stranded RNA, failed to enter 2.5% polyacrylamide gels, eluted with double-stranded RNA from a CF-11 cellulose column, were precipitated with single-stranded RNA …

Influence Of Time Of Application Of Nitrogen Fertilizer On Corn Yields, Harold F. Miller, Kenneth Wells, Morris J. Bitzer, G. W. Thomas, R. E. Phillips

Agronomy Notes

Soil moisture conditions can have a large effect on crop responses to nitrogen fertilization. Kentucky's usual climatic pattern of periods of heavy rainfall and relatively warm temperatures during the winter and spring seasons influences expected yield responses of corn to applied nitrogen. If nitrogen fertilizer is applied in late winter or early spring, some of it may be lost before the plants have made sufficient growth to take up appreciable quantities. The amount of loss that might be expected will be influenced by the amount of rainfall, temperature, amount of organic matter and drainage of the soil.

The Prairie Naturalist Volume 7, No.1. March 1975

The Prairie Naturalist

MIGRATION OF BIRDS IN NORTH DAKOTA DURING FAll 1974 ▪ J. T. Lokemoen & D. H. Johnson.

REPRODUCTION AND DEVELOPMENT OF FOUR MALLARD LINES ▪ R. J. Greenwood

Genetic Studies Of Induced Mutants In Melilotus Alba. Iv. Inheritance And Complementation Of Six Additional Chlorophyll-Deficient Mutants, R. R. Ronnenkamp, Herman J. Gorz, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

Six ethyl methanesulfonate-induced chlorophyll-deficient mutants of Melilotus alba Desr. were studied. Each of the mutants behaved as a monogenic recessive. Complementation analysis revealed that the genes from five of the mutants were nonallelic to each other and to the previously reported mutants ch₄, ch₅, ch₆, and ch₇. Proposed symbols for the five genes are ch₈, ch₉, ch₁₀, ch₁₁, and ch₁₂. No linkage was detected between ch₅ and ch₇, ch₇, and M_f, (multifoliolate leaf), ch_{8 …}

Summary Of 1974 Dock Control Field Trials, J M. Allen

Experimental Summaries - Plant Research

Dock control - Spray graze evaluations - 73BY8, 73HA4, 73BU5, 73MA6, 73DE6 Dicamba in pastures - 73AL38, 73BU9, 73AR9

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.

1974 Seed Yield Of Early Maturing Crossbreds Under Wheatbelt Conditions, C. M. Francis

Experimental Summaries - Plant Research

Small plot trials sited at Merredin, Bencubbin and Bungil again demonstrated the 'bred' varieties to be at least the equal of Geraldton or Northam A under wheatbelt conditions. Growing season conditions at Bencubbin were the best for pasture in recent years. Merredin and Bungil also received above average rainfall but encountered dry conditions in September. Predictably the coarse siliceous nature of the Wodgil soil at Bungil in conjunction with the dry period produced very low seed yields. Crossbred 175.1.3 the leading crossbred at Merredin in 1973, was again significantly better than Geraldton or Northam A at Merredin and Bungil (Table …

Summary Of Trial Results - 1974, N R. Mckeown

Experimental Summaries - Plant Research

Observations and measurements were made on 10 grazing trials and 11 small-plot legume species trials in 1974. Three of the grazing trials were under crop, two of them concluding low oestrogen species trials which had been grazed since 1969, and one of them, 68M023, West Moora, as an interval between pasture phases. The small-plot trials dated from 1970 or later and on most of them half of each plot could be grazed by sheep and half was protected. These trials have continued to supply useful information on the suitabiliy of cultivars to soil and climate and will be the subject …

Ipomoea Carnea Jacq. (Convolvulaceae) In Costa Rica, Kathleen H. Keeler

School of Biological Sciences: Faculty Publications

This is the first report of Ipomoea carnea (Convolvulaceae) from lowland Costa Rica. These populations are unusual for the species in flower color, flowering season and pollinator. Other aspects of the biology of the species in Guanacaste, especially pollination, flower robbing and extrafloral nectary visitors, are discussed.