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Soil Organic Carbon Content And Composition Of 130-Year Crop, Pasture And Forest Land-Use Managements, Dean A. Martens, Thomas E. Reedy, David T. Lewis (Retired)

Department of Agronomy and Horticulture: Faculty Publications

Conversion of former agricultural land to grassland and forest ecosystems is a suggested option for mitigation of increased atmospheric CO₂. A Sharpsburg prairie loess soil (fine, smectitic, mesic Typic Argiudoll) provided treatments to study the impact of long-term land use on soil organic carbon (SOC) content and composition for a 130-year-old cropped, pasture and forest comparison. The forest and pasture land use significantly retained more SOC, 46% and 25%, respectively, compared with cropped land use, and forest land use increased soil C content by 29% compared with the pasture. Organic C retained in the soils was a function …

Northeast Research Station Watertown, South Dakota Annual Progress Report, 2003, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 2003 annual progress report for the Northeast Research Station in Watertown, South Dakota. This report is issued by the South Dakota Agricultural Experiment Station and the South Dakota State University Plant Science Department. This report includes weather data, yield comparisons, crop performance trials, corn trials, soybean trials, winter wheat performance testing, Barley Foliar information, weed and pest control, herbicide demonstrations, canola and flax variety trials and more.

West River Ag Center Crops And Soils Research Annual Progress Report, 2003, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This is the 2003 progress report of the West River Crops and Soils Research Projects, South Dakota Agricultural Experiment Station. This document includes reports on: weather and climate, wheat and grain variety trials, management and tillage, and weed and pest control.

Central Crops And Soils Research Station Highmore, South Dakota: Annual Progress Report, 2003, Agricultural

Agricultural Experiment Station and Research Farm Annual Reports

This report of the Central Crops and Soils Research Station at Highmore, South Dakota reflects the 2003 growing season. This document includes data on: temperatures and precipitation, field evaluation of woody plant materials, alfalfa production, winter wheat, oat research, spring wheat breeding, resistance of sunflower germplasm to the red sunflower seed weevil, flax variety test, weed control, fertilizer and soil test on soybeans, aphid infestations, small grain variety test, and corn breeding.

The Prairie Naturalist Volume 35, No.4 December 2003

The Prairie Naturalist

HOME RANGE AND MOVEMENTS OF EASTERN AND RIO GRANDE WILD TURKEY FEMALES IN NORTHEASTERN

SOUTH DAKOTA ▪ C. P. Lehman, L. D. Flake, and A. P. Leif

THE BAT FAUNA OF SOUTHEASTERN SOUTH DAKOTA . J. E. Lane, C. L. Buck, and R. M. Brigham

FIRST REPORT OF THE NORTH DAKOTA RARE BIRD COMMITTEE ▪ D. Svingen and R. E. Martin

BREEDING CHRONOLOGY OF DABBLING DUCKS IN MINNEDOSA, MANITOBA ▪ A. M. Wells and H. H. Prince

A LIVE COLLECTION OF A PISTOLGRIP FROM NEBRASKA ▪ S. C. Schainost

NEW NESTING DATES FOR SOME BREEDING BIRDS IN NORTH DAKOTA ▪ …

Sp341-V-Sampling Stored Grain For Insects, Molds And Related Problems, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

The periodic and timely sampling of stored grains can detect existing or potential problems before considerable damage has occurred. Proper sampling of stored grain can reveal increases in moisture or temperature and insect or mold problems in the grain.

It is important to be aware of the potential hazards of sampling inside a grain bin. Suffocation can occur in grain bins, and sampling should be done with caution.

Sp290-F Maple Leaf Pouch Galls, The University Of Tennessee Agricultural Extension Service

Forestry, Trees, and Timber

Eriophyid mite species cause a variety of pouch galls on red, sugar and silver maples. Pouch gall formation, a localized growth reaction of the infested plant, occurs as a result of mite feeding activity. The species of mite can be identified by the specific characteristics of the gall on the host plant.

Pb1770-A Guide For Considering And Developing A Farmers Market In Tennessee, The University Of Tennessee Agricultural Extension Service

Marketing, Finances and Value-Added Agriculture

Soybean farmers face a variety of marketing alternatives each year. Selling to a grain buyer at harvest is one way to sell soybeans. Another alternative is to store soybeans (either commercially or on-farm) and sell them later. Farmers may also set a price for their soybeans before harvest by signing a cash-forward contract with a grain buyer. The contract specifi es the quantity, price, grade, quality and date of delivery. Because prices have been historically lowest during harvest, storing and cash-forward contracting are ways to price soybeans before or after the harvest season, in hopes of achieving higher prices.

Arkansas Corn And Grain Sorghum Performance Tests 2003, D. G. Dombek, D. K. Ahrent, R. D. Bond, I. L. Eldridge

Arkansas Agricultural Experiment Station Research Series

Corn and grain sorghum performance tests are conducted each year in Arkansas by the University of Arkansas Division of Agriculture. The tests provide information to companies marketing seed within the state, and aid the Arkansas Cooperative Extension Service in formulating recommendations for producers.

Southeast South Dakota Experiment Farm Annual Progress Report, 2003, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This document highlights 27 crop and livestock research and demonstration reports from projects conducted at Southeast Research Farm in 2003. It is published by the South Dakota Agricultural Experiment Station and Cooperative Extension Service at South Dakota State University in cooperation with the Southeast South Dakota Experiment Farm Corporation. Reports in this document include information on: temperatures and precipitation data, corn production and performance, soybean research and planting, soil testing, alfalfa yield test, fertilizer testing, herbicide research, crop rotation, sorghum, small grains, livestock research, and pest and weed control.

Center For Grassland Studies Newsletter, Winter 2003, Volume 9, No. 1

Center for Grassland Studies: Newsletters

Planning for Bison Grazing on Native Rangeland by Kristin Miller, USDA Natural Resources Conservation Service

Pooled Sales Add Value to Cull Cows by Rebekka Martin and Jana Beckman

The Grass Dance

UNL Offers Online Course in Turf Diseases

Second National Conference on Grazing Lands

Seed Dormancy – the Uncertainty in Native Grass Seeding

Prairie Pines to Benefit UNL Programs by Steven Ress, Water Center, UNL

Platte River Trust Begins Study of Birds Breeding in Grasslands by Felipe Chavez-Ramirez, Platte River Whooping Crane Maintenance Trust

Grape Tomato Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Midwest Vegetable Trial Reports

Four grape tomato varieties were evaluated in a replicated trial at the Pinney-Purdue Agricultural Center in Wanatah, Indiana. A fifth grape variety and one cherry variety were observed in unreplicated plots. Yield, plant, and fruit characteristics are reported.

Pumpkin Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Midwest Vegetable Trial Reports

Pumpkin varieties and experimental lines were evaluated at the Kurtz Farm in Allen County, Indiana. Twenty-two jack-o-lantern types, 4 pie types, and 4 mini-pumpkins were included in the trial. Yield and fruit characteristics are reported.

Grape Tomato Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Purdue Fruit and Vegetable Research Reports

Four grape tomato varieties were evaluated in a replicated trial at the Pinney-Purdue Agricultural Center in Wanatah, Indiana. A fifth grape variety and one cherry variety were observed in unreplicated plots. Yield, plant, and fruit characteristics are reported.

Jalapeño Pepper Cultivar Observation In Northern Indiana, 2003, Mario R. Morales, Elizabeth Maynard

Purdue Fruit and Vegetable Research Reports

This article reports on an observation trial of standard Jalapeño cultivars. Yield, fruit size, and plant size are reported.

Sugar-Enhanced Sweet Corn Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Purdue Fruit and Vegetable Research Reports

Twenty-two sweet corn cultivars including homozygous se, heterozygous se, and mixed se and sh2 genetics were evaluated at the Pinney-Purdue Ag Center, Wanatah, IN. Yield and ear quality characteristics are reported.

Pumpkin Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Purdue Fruit and Vegetable Research Reports

Pumpkin varieties and experimental lines were evaluated at the Kurtz Farm in Allen County, Indiana. Twenty-two jack-o-lantern types, 4 pie types, and 4 mini-pumpkins were included in the trial. Yield and fruit characteristics are reported.

Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Purdue Fruit and Vegetable Research Reports

Sixteen sweet corn cultivars including standard and modified supersweets were evaluated at the Pinney-Purdue Ag. Center, Wanatah, IN. Yield and ear quality characteristics are reported.

Jalapeño And Banana Pepper Cultivar Trials In Northern Indiana, 2003, Mario R. Morales, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

This article reports on the evaluation of standard and new experimental cultivars of jalapeno and banana peppers. Yield, fruit size, and plant size are reported.

Muskmelon Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Purdue Fruit and Vegetable Research Reports

Muskmelon varieties were evaluated at Garwood Orchards in LaPorte County. Six experimental hybrids were compared to the cultivar Vienna. Yield and fruit characteristics are reported.

Muskmelon Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Midwest Vegetable Trial Reports

Muskmelon varieties were evaluated at Garwood Orchards in LaPorte County. Six experimental hybrids were compared to the cultivar Vienna. Yield and fruit characteristics are reported.

Jalapeño And Banana Pepper Cultivar Trials In Northern Indiana, 2003, Mario R. Morales, Elizabeth T. Maynard

Midwest Vegetable Trial Reports

This article reports on the evaluation of standard and new experimental cultivars of jalapeno and banana peppers. Yield, fruit size, and plant size are reported.

Jalapeño Pepper Cultivar Observation In Northern Indiana, 2003, Mario R. Morales, Elizabeth Maynard

Midwest Vegetable Trial Reports

This article reports on an observation trial of standard Jalapeño cultivars. Yield, fruit size, and plant size are reported.

Sugar-Enhanced Sweet Corn Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Midwest Vegetable Trial Reports

Twenty-two sweet corn cultivars including homozygous se, heterozygous se, and mixed se and sh2 genetics were evaluated at the Pinney-Purdue Ag Center, Wanatah, IN. Yield and ear quality characteristics are reported.

Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Midwest Vegetable Trial Reports

Sixteen sweet corn cultivars including standard and modified supersweets were evaluated at the Pinney-Purdue Ag. Center, Wanatah, IN. Yield and ear quality characteristics are reported.

Forage News [2003-12], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Forage at KCA
• KFGC Awards
• 4^TH Kentucky Grazing Conference
• Characteristics Typical of Profitable Dairy Graziers in Wisconsin
• Alfalfa Average Increase
• Opportunities for Warm Season Grasses
• Costs of Maintaining a Beef Cow in Kentucky, Illinois or Michigan
• Upcoming Events

Gaca, The Response Regulator Of A Two-Component System, Acts As A Master Regulator In Pseudomonas Syringae Pv. Tomato Dc3000 By Controlling Regulatory Rna, Transcriptional Activators, And Alternate Sigma Factors, Asita Chatterjee, Yaya Cui, Hailian Yang, Alan Collmer, James R. Alfano, Arun K. Chatterjee

Department of Plant Pathology: Faculty Publications

Concerted investigations of factors affecting host-pathogen interactions are now possible with the model plant Arabidopsis thaliana and its model pathogen Pseudomonas syringae pv. tomato DC3000, as their whole genome sequences have become available. As a prelude to analysis of the regulatory genes and their targets, we have focused on GacA, the response regulator of a two-component system. The DC3000 gene was cloned by testing for the reversal of phenotypes of an Erwinia GacA– mutant. A GacA– mutant of DC3000 constructed by marker exchange produces much-reduced levels of transcripts of three alternate sigma factors: HrpL, required for the production of effector …

Activation Of A Coi1-Dependent Pathway In Arabidopsis By Pseudomonas Syringae Type Iii Effectors And Coronatine, Ping He, Satya Chintamanani, Zhongying Chen, Lihuang Zhu, Barbara N. Kunkel, James R. Alfano, Xiaoyan Tang, Jian-Min Zhou

Center for Plant Science Innovation: Faculty and Staff Publications

Gram-negative bacteria use a variety of virulence factors including phytotoxins, exopolysaccharides, effectors secreted by the type III secretion system, and cell-wall-degrading enzymes to promote parasitism in plants. However, little is known about how these virulence factors alter plant celluar responses to promote disease. In this study, we show that virulent Pseudomonas syringae strains activate the transcription of an Arabidopsis ethylene response factor (ERF) gene, RAP2.6, in a coronatine insensitive 1 (COI1)-dependent manner. A highly sensitive RAP2.6 promoter-firely luciferase (RAP2.6-LUC) reporter line was developed to monitor activities of various bacterial virulence genes. Analyses of P. syringae pv. tomato DC3000 mutants indicated …

Phenological Responses Of Wheat And Barley To Water And Temperature: Improving Simulation Models, G. S. Mcmaster, Wally Wilhelm

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

Understanding and predicting small-grain cereal development is becoming increasingly important in enhancing management practices. Recent efforts to improve phenology submodels in crop simulations have focused on incorporating developmental responses to water stress and interpreting and understanding thermal time. The objectives of the present study were to evaluate data from three experiments to (a) determine the qualitative and quantitative response of wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.) to water stress and (b) ascertain where in space to measure temperature, to provide information required to improve phenological submodels. The first experiment tested the phenological responses of 12 …

Comparative Pathogenicity Of Escherichia Coli O157 And Intimin-Negative Non-O157 Shiga Toxin-Producing E. Coli Strains In Neonatal Pigs, Evelyn A. Dean-Nystrom, Angela R. Melton-Celsa, Joachim F. L. Pohlenz, Harley W. Moon, Alison D. O’Brien

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

We compared the pathogenicity of intimin-negative non-O157:H7 Shiga toxin (Stx)-producing Escherichia coli (STEC) O91:H21 and O104:H21 strains with the pathogenicity of intimin-positive O157:H7 and O157:H^- strains in neonatal pigs. We also examined the role of Stx2d-activatable genes and the large hemolysinencoding plasmid of O91:H21 strain B2F1 in the pathogenesis of STEC disease in pigs. We found that all E. coli strains that made wild-type levels of Stx caused systemic illness and histological lesions in the brain and intestinal crypts, whereas none of the control Stx-negative E. coli strains evoked comparable central nervous system signs or intestinal lesions. By contrast, …