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The Prairie Naturalist Volume 24, No.4 December 1992

The Prairie Naturalist

NEW VASCULAR PLANT RECORDS FOR NORTIl DAKOTA ▪ B. L. Heidel, A. J. Duxbury, W.T. Barker, and J. R. Challey

GROWTH OF BLUEGILLS AND YELLOW PERCH IN SOUTH DAKOTA WATERS ▪ D.w. Willis, J.P. Lott, C.S. Guy, and D.O. Lucchesi

SEASONAL VARIATION IN SAMPLING DATA FOR WALLEYE AND SAUGER COLLECTED WITH GILL NETS FROM LAKE SAKAKAWEA, NORTH DAKOTA ▪ S.W. Mero andD.W. Willis

OBSERVATIONS ON NESTING OF THE AMERICAN BITTERN IN NORTIlWEST MINNESOTA ▪ W D. Svedarsky

FOOD HABITS OF MOURNING DOVES IN EAST CENTRAL SOUTH DAKOTA ▪ J.T. Van't Hul and J.A. Jenks

DISTRIBUTION OF TIlE PYGMY SHREW IN …

Nebline, December 1992

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Simulating Winter Wheat Shoot Apex Phenology , G. S. Mcmaster, Wallace Wilhelm, J. A. Morgan

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

Simulation models are heuristic tools for integrating diverse processes and help to increase our understanding of complex processes and systems. Models that predict crop development can serve as decision-support tools in crop management. This paper describes a phenology simulation model for the winter wheat shoot apex and reports validation and sensitivity analysis results.

The complete developmental sequence of the winter wheat shoot apex is quantitatively outlined and correlated with commonly recognized phenological growth stages. The phyllochron is used to measure the thermal time between most phenological growth stages, thereby increasing the flexibility over the growing degree-day (GDD) and photothermal approaches. …

Low Pressure Center Pivot And Soil Management Effects On Runoff, L. N. Mielke, J. R. Gilley, Wallace Wilhelm

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

The objective of this research was to determine the influence center-pivot sprinkler irrigation methods in combination with tillage practices for corn (Zea mays L.) have on surface runoff of irrigation and rainfall. A center pivot irrigation machine was redesigned to apply water by high-pressure-impact (HPI), low-pressure-impact (LPI), and low-pressure-spray (LPS) nozzles. The center-pivot was a standard 10-tower machine, 395 meters in length and 38.4 meters tower spacing. Three tillage systems were used -- till-plant (T), disk (D), and subtill (S) which was till-plant with subsoiling between rows with straight single shanks, 360 mm deep, after last cultivation. The soil …

Simulating Winter Wheat Spike Development And Growth, Gregory S. Mcmaster, Jack A. Morgan, Wallace Wilhelm

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

Mechanistic crop simulation models can aid in integrating and directing research, and in improving farm management strategies. Information derived from recent research on spike development and growth of winter wheat (Triticum aestivum L.) was incorporated into a submodel, SPIKEGRO, and added to an existing model called SHOOTGRO. This manuscript discusses the SPIKEGRO submodel.

SPIKEGRO emphasizes the reproductive functioning of the shoot apex. The complete developmental sequence of the shoot apex is outlined and quantified. All developmental events and growth stages are predicted, most using the phyllochron approach. Spikelet and floret primordium initiation, growth, and abortion; ovule fertilization and growth; …

Nebline, November 1992

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Nebline, October 1992

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Weed Awareness

A Homolog Of Escherichia Coli Reca Protein In Plastids Of Higher Plants, H. Osman, P. Grandoni, Heriberto D. Cerutti, André Jagendorf

Center for Plant Science Innovation: Faculty and Staff Publications

Studies of chloroplast DNA variations, and several direct experimental observations, indicate the existence of recombination ability in algal and higher plant plastids. However, no studies have been done of the biochemical pathways involved. Using a part of a cyanobacterial recA gene as a probe in Southern blots, we have found homologous sequences in total DNA from Pisum sativum and Arabidopsis thaliana and in a cDNA library from Arabidopsis. A cDNA was cloned and sequenced, and its predicted amino acid sequence is 60.7% identical to that of the cyanobacterial RecA protein. This finding is consistent with our other results showing …

The Prairie Naturalist Volume 24, No.3 September 1992

The Prairie Naturalist

VESICULAR-ARBUSCULAR MYCORRHIZAE IN BLOWOUT PENSTEMON ▪ T. R. Flessner and J. Stubbendieck

STATUS OF HAPLOPAPPUS FREMONTII A. GRAY SSP. MONOCEPHALUS (A. NELSON) HALL [ASTERACEAE] IN COLORADO ▪ K.A. Schulz and R.B. Shaw

HABITAT CHANGES ABOVE AND BELOW WATER PROJECTS ON THE NORTH PLATTE AND SOUTH PLATTE RIVERS IN NEBRASKA ▪ P. M. McDonald and J.G. Sidle

INSECT FLORAL VISITORS TO FOUR SPECIES OF TALL-GRASS PRAIRIE COMPOSITE (ASTERACEAE: HELIANTHEAE) ▪ J. A. Dickinson and M. J. McKone

SUMMER BIRD USE OF KANSAS WINDBREAKS ▪ T.T. Cable, R.L. Schroeder, V. Brack, Jr., and P.S. Cook

RING-NECKED PHEASANTS AND FOOD PLOT SIZE (GALLIFORMES: …

Nebline, September 1992

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Nebline, August 1992

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County Fair Special Edition

Nebline, July 1992

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Proceedings Of The Workshop Social Science Research And The Crsps, C. Milton Coughenour, John M. Yohe, Anne E. Ferguson, Jere L. Gilles, Jo Purcell

INTSORMIL Impacts and Bulletins

Contents

Executive Summary: A New Agenda for CRSP Social Science Research - C. Milton Coughenour . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Session 1

Developing a Strategic Research Agenda David G. Cummins, Chair

Framing a Strategic Research Agenda.-John Yohe ................ 3

Social Sciences and Collaborative Research: Toward an Agenda for the Social Sciences in Agriculture -Jere Lee Gilles ............... 7

Session 2

Technology Development and Sustaining Household Food Security Kathleen DeWalt, Chair

Technology Development and Household Food Security - …

Book Review: Genetically Engineered Organisms: Benefits And Risks, Anne K. Vidaver

Department of Plant Pathology: Faculty Publications

In the continuing debate on the introduction into the environment of genetically modified organisms, particularly those modified by recombinant DNA, there are few books suitably written for policymakers, the lay public and scientists in other fields. This book describes the current state of the science and art of genetic engineering, potential uses (particularly outside the laboratory), and the benefits that can be expected. It is particularly pertinent for examining potential risk and management of risk from the perspective of the United Kingdom.

Performance Of Green And Blanched Asparagus Cultivars In Nebraska [Abstract], Laurie Hodges, Roger Uhlinger, Ernesto Brovelli, Susan Cuppett, Anne Parkhurst

Department of Agronomy and Horticulture: Faculty Publications

Fourteen asparagus cultivars were established in 1988 in eastern Nebraska on a heavy silty clay soil to determine suitability for Nebraska production.

The Prairie Naturalist Volume 24. No.2 June 1992

The Prairie Naturalist

FIRST FLOWERING DATES AND FLOWERING PERIODS OF PRAIRIE PLANTS AT WOODWORTH. NORTH DAKOTA ▪ J. M. Callow, J A. Kanlrud, and K.F. Higgins

PROBABLE DISTRIBUTION OF THE WOODCHUCK IN NORTH CENTRAL KANSAS ▪ J.R. Choate and T. W. Haner

NEST AND NEST SITE CHARACTERISTICS OF SOME GROUND-NESTING NON-PASSERINE BIRDS OF NORTHERN GRASSLANDS ▪ H A. Kantrud and K.F. Higgins

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

COMPARISON OF SIZE STRUCfURE AND CATCH RATE FOR LARGEMOUTH BASS SAMPLES COLLECTED BY ELECTROFlSHING AND ANGLING ▪ DJ. Isaak, T.D. Hill, and D.W. Willis

MULE DEER HABITAT USE IN THE NORTH DAKOTA …

Nebline, June 1992

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Response Of Central Plains Taligrass Prairies To Fire, Fertilizer, And Atrazine, Robert A. Masters, Kenneth P. Vogel, Robert B. Mitchell

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

Tallgrass prairies are an important forage resource in the eastern Central Great Plains. The effect of spring burning, fertilization, and atrazine [6-chloro-N-ethyl-N'-(1-methylethyl)-1,3,5-triazine- 2,4-diamine] on standing crop of selected herbaceous species and categories of vegetation was determined in 6 tallgrass prairie environments located near Lincoln and Virginia, Neb., from 1987 through 1989 and 1 site near Bloomfield, Neb., in 1987. The grasslands were in good to excellent condition at the time these studies were conducted. Portions of each site were burned in mid-to late spring, atrazine was applied at a rate of 2.2 kg a.i. ha^-1 in late April to …

Simulating Winter Wheat Production In Three Tillage Systems Using The Nitrogen Tillage Residue Management Model, B. Davidoff, Wallace Wilhelm, Joseph M. Skopp

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

Crop production system analysis is necessary to identify tillage and residue management practices that affect crop production. The objective of this study was to evaluate the potential of using the Nitrogen Tillage Residue Management (NTRM) model to evaluate the influence of tillage practices on winter wheat (Triticum aestivum L.) yield. Modifications of the NTRM model were required to simulate winter wheat production. The model was calibrated using site-specific information obtained from a tillage-nitrogen rate experiment conducted at the High Plains Agricultural Laboratory near Sidney, NE, on an Alliance silt loam (fine silty, mixed, mesic Aridic Argiustoll). Model output was …

Nebline, May 1992

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Nebline, April 1992

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In Situ Ruminal Protein Degradation Of Switchgrass And Smooth Bromegrass, J. J. Mullahey, Steven S. Waller, K. J. Moore, Lowell E. Moser, Terry J. Klopfenstein

Department of Agronomy and Horticulture: Faculty Publications

Performance of livestock grazing warm-season, perennial grasses is generally greater than would be expected given their relatively low protein concentrations. Two experiments were conducted to assess ruminal escape protein using an in situ rumen technique for switchgrass (Panicum virgatum L.) and smooth bromegrass (Bromus inennis Leyss.). Whole-plant, leaf, and stem samples were harvested at specific stages of maturity in 1987. Duplicate samples of each grass were incubated for 12 h in situ. Escape protein values were expressed as concentration [grams escape protein per kilogram dry matter (DM) adjusted for acid detergent insoluble nitrogen (ADIN)] and as a percentage …

Registration Of N27 Sweetclover Germplasm, Herman J. Gorz, Francis A. Haskins, G. R. Manglitz, R. R. Smith, K. P. Vogel

Department of Agronomy and Horticulture: Faculty Publications

N27 Sweetclover [Melilotus officinalis (L.) Lam.] (Reg. no. GP-l, PI 552552) is a biennial, yellow-flowered, high-coumarin strain that was selected for large seed size and for resistance to the sweetclover aphid [,i>Therioaphis riehmi (Bornerj]. N27 was developed cooperatively by the USDA-ARS and the Nebraska Agricultural Research Division and was released in February 1991.

Registration Of N28 And N29 Sweetclover Germplasms, Herman J. Gorz, Francis A. Haskins, G. R. Manglitz, R. R. Smith, K. P. Vogel

Department of Agronomy and Horticulture: Faculty Publications

Two sweetclover [Melilotus officinalis (L.) Lam.] germplasms, N28 (Reg. no. GP-2, PI 552553) and N29 (Reg. no. GP-3, PI 552554), are improved biennial, yellow-flowered strains selected for low coumarin content (or, more accurately, for low content of o-hydroxycinnamic acid β-D-glucoside; [1]) and for resistance to the sweetclover aphid (Therioaphis riehmi Bomer). N28 and N29 were developed cooperatively by the USDA-ARS and the Nebraska Agricultural Research Division and were released in February 1991.

The Prairie Naturalist Volume 24, No.1 March 1992

The Prairie Naturalist

HABITAT CONSERVATION FOR NESTING LEAST TERNS AND PIPING PLOVERS ON THE PLATTE RIVER, NEBRASKA ▪ J. W. Ziewitz, J. G. Sidle, and J. J. Dinan

DIURNAL FLIGHT TIME OF WINTERING CANADA GEESE: CONSIDERATION OF REFUGES AND FLIGHT ENERGETICS ▪ J. E. Austin and D. D. Humburg

MYCOTOXIN OCCURRENCE IN WASTE FIELD CORN AND INGESTA OF WILD GEESE IN THE NORTHERN GREAT PLAINS ▪ K. F. Higgins, R. M. Barta, R. G. Neiger, G. E. Rottinghaus, and R. I. Sterry

NOTES

Cost of Nest Reuse by Western Kingbirds ▪ T. M. Bergin

A New Record for Falcate Spurge in the Midwest …

Nebline, March 1992

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Proceedings Of The 19th Annual Meeting, Southern Soybean Disease Workers (February 19-20, 1992, St. Louis, Missouri), J. Allen Wrather, Patrick D. Colyer, Glenn R. Bowers Jr., Brian M. Anderson, Glenn G. Hammes

Southern Soybean Disease Workers: Conference Proceedings

Contents

Southern Soybean Disease Workers 1991-1992 officers

1991-1992 Program Committee

Graduate student competition

Interactions of Macrophomina phaseolina with two soybean cultivars under four irrigation regimes. SR Kendig and JC Rupe

Influence of soybean planting dates on the incidence and severity of Sudden Death Syndrome. SS Alghamdi, PT Gibson, and MA Shenaut

The interrelationship of Heterodera glycines and Fusarium solani in sudden death syndrome of soybean. KS McLean and GW Lawrence

Frogeye leaf spot of soybean: evaluation of cultivars and isolates. PF Pace, DB Weaver, and LD Ploper

Soybean cyst nematode race symposium

SCN race scheme: a historical perspective. JA Fox …

Nebline, February 1992

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Soil Science Research Report - 1992

Soil Science Research Reports

Weather Data - 1992 .......... 1

Influence of Anhydrous Ammonia Band Spacing on Irrigated Corn Grain Yield and Band Persistence .......... 9

Variable Rate Nitrogen Fertilization with Furrow Irrigation - Milton Ruhter Farm .......... 17

Burlington Northern Nitrogen Management Study .......... 25

The Effects of a Urease Inhibitor on Volatile Ammonia Loss and Urea Hydrolysis on Irrigated, Ridge Till Com .......... 37

Nitrogen Fertilization of Smooth Brome .......... 43

Evaluation of Soil Testing for Nitrate-Nitrogen .......... 47

Horizontal Sampling to Assess Agrichemical Movement .......... 55

Water Movement in Soils and Porous Media .......... 57

A Natural Gradient Transport Study of …

Determination Of Root Biomasses Of Three Species Grown In A Mixture Using Stable Isotopes Of Carbon And Nitrogen, H. Wayne Polley, Hyrum B. Johnson, Herman S. Mayeux

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

A method is evaluated that employs variation in stable C and N isotopes from fractionations in C and N acquisition and growth to predict root biomasses of three plant species in mixtures. Celtis laevigata Willd. (C₃), Prosopis glandulosa Torr. (C₃, legume) and Schizachyrium scoparium (Michx.) Nash (C₄), or Gossypium hirsutum L. (C₃), Glycine max (L.) Merr. (C₃ legume), and Sorghum bicolor (L.) Moench (C₄) were grown together in separate, three-species combinations.