Agronomy and Crop Sciences Commons^™

Arkansas Cotton Variety Test 2009, Fred M. Bourland, A. B. Beach, D. P. Roberts Jr.

Arkansas Agricultural Experiment Station Research Series

The primary goal of the Arkansas Cotton Variety Test is to provide unbiased data regarding the agronomic performance of cotton varieties and advanced breeding lines in the major cotton-growing areas of Arkansas. This information helps seed companies establish marketing strategies and assists producers in choosing varieties to plant.

Coupling Of Carbon Dioxide And Water Vapor Exchanges Of Irrigated And Rainfed Maize–Soybean Cropping Systems And Water Productivity, Andrew E. Suyker, Shashi B. Verma

School of Natural Resources: Faculty Publications

Continuous measurements of CO₂ and water vapor exchanges made in three cropping systems (irrigated continuous maize, irrigated maize–soybean rotation, and rainfed maize–soybean rotation) in eastern Nebraska, USA during 6 years are discussed. Close coupling between seasonal distributions of gross primary production (GPP) and evapotranspiration (ET) were observed in each growing season. Mean growing season totals of GPP in irrigated maize and soybean were 1738 ± 114 and 996 ± 69 g C m⁻², respectively (±standard deviation). Corresponding mean values of growing season ET totals were 545 ± 27 and 454 ± 23 mm, respectively. Irrigation affected GPP …

Growing Season Definition And Use In Wetland Delineation, Karen Malone, Hans Williams

eBooks

The definition of growing season in the 1987 U.S. Army Corps of Engineers Wetland Delineation Manual is derived from the soil biological-zero temperature concept. Lacking direct information on soil temperatures, minimum air temperature thresholds are used as indicators of the beginning and ending dates for the growing season. The 1987 Manual regional supplements allow for field observations of above-ground plant growth to estimate the growing season period. Since acceptance of the 1987 Manual, the growing season concept has been controversial. Soil biological zero does not apply to large areas of the continental United States, minimum air temperature thresholds appear inconsistent …

Sorghum: An Ancient, Healthy And Nutritious Old World Cereal, United Sorghum Checkoff Program, John Lindsay

INTSORMIL Scientific Publications

Sorghum is Africa’s contribution to the small number of elite grains that supply about 85% of the world’s food energy. Only four other foods rice, wheat, maize, and potatoes are consumed in greater amounts by the human race. Sorghum is the dietary staple of more than 500 million people in more than 30 countries of the semi arid tropics, thus being one of the most familiar foods in the world (Board on Science and Technology for International Development, 1996). Sorghum is a truly ancient grain. Dahlberg and Wasylikowa (1996) reported on sorghum remains found in the Nabta Playa archaeological site …

“Comportamiento De Los Sorgos Híbridos Para Grano Dentro De Los Ensayos Uniformes Del Pccmca 2010” = “Performance Of The Hybrid Sorghums For Grain In The Uniform Trials Of Pccmca 2010”, René Clará Valencia, Rafael Obando, Nury Gutiérrez, Fabricio Dolmus, Marvin Jiménez, Ricardo Estebez, Alberto Morán, Norman Danilo Escoto Gudiel, Roman Gordón Mendoza

INTSORMIL Scientific Publications

Los ensayos uniformes de sorgo del PCCMCA, son el medio regionalizado para evaluar y seleccionar los mejores sorgos híbridos comerciales y pre-comerciales de las empresas productoras de semillas y programas nacionales de la región. Esta actividad ha sido la base para que los agricultores reciban las mejores semillas que les aseguren buena rentabilidad y estabilidad del cultivo. En el 2010 este ensayo fue formado por un total de 8 híbridos, de los cuales el DKS-46, MSH-551 y MSI-560 son de la empresa MONSANTO; 85P-20 y 85P-36 de PINEER y ESHG-3 del INTA Nicaragua; como testigo común se utilizó el AMBAR …

Parametros De Calidad De Grano De Sorgo Para La Elaboración De Alimentos Y Harinas, Vilma Calderón De Zacatares

INTSORMIL Scientific Publications

La determinación de los parámetros de calidad en los cereales es importante para evaluar la funcionalidad de los atributos del grano y determinar su uso final (Waniska et al., 1982). El término calidad incluye un amplio rango de propiedades que pueden ser definidas en términos: físicos, microbiológicos e intrínsecos.

Marketing Options For Grapes And Grape Products, Pamela Brady, Michael Thomsen, Justin R. Morris

AAES Research Reports and Research Bulletins

Many owners of small- and medium-size farms in Arkansas and across the U.S. have begun to explore the potential of juice and wine grapes as an alternative crop to increase the profitability and stability of their farming operations. Grapes are unique in that they are not only well-suited for marketing through traditional commercial channels but also are popular in direct marketing venues such as produce stands, farmers markets, community sponsored agricultural ventures, and pick-your-own operations. This publication provides an overview of the various types of market channels available for grape growers and explores their potential as outlets for regional grape …

2010 Fall Seed Book, Nebraska Crop Improvement Association

Nebraska Crop Improvement Association Seed Guides

FOUNDATION SEED

PLANT VARIETY PROTECTION ACT and HOW IT BENEFITS YOU!

WHEAT VARIETY SELECTION & COMPLEMENTATION

WINTER WHEAT VARIETY CHARACTERISTICS - 2010

HARD RED WINTER WHEAT

HARD WHITE WINTER WHEAT

TRITICALE

TURFGRASSES

PERENNIAL FORAGE GRASSES

APPROVED SEED CONDITIONERS

CUSTOM CERTIFIED CONDITIONERS

2010 NCIA MEMBERS

An Integrative Approach To Genomic Introgression Mapping, Andrew J. Severin, Gregory A. Peiffer, Wayne W. Xu, D. L. Hyten, Bruna Bucciarelli, Jamie A. O'Rourke, Yung-Tsi Bolon, David Grant, Andrew Farmer, Gregory D. May, Carroll P. Vance, Randy C. Shoemaker, Robert M. Stupar

Department of Agronomy and Horticulture: Faculty Publications

Near-isogenic lines (NILs) are valuable genetic resources for many crop species, including soybean (Glycine max). The development of new molecular platforms promises to accelerate the mapping of genetic introgressions in these materials. Here, we compare some existing and emerging methodologies for genetic introgression mapping: single-feature polymorphism analysis, Illumina GoldenGate single nucleotide polymorphism (SNP) genotyping, and de novo SNP discovery via RNA-Seq analysis of next-generation sequence data. We used these methods to map the introgressed regions in an iron-inefficient soybean NIL and found that the three mapping approaches are complementary when utilized in combination. The comparative RNA-Seq approach offers …

Soydb: A Knowledge Database Of Soybean Transcription Factors, Zheng Wang, Marc Libault, Trupti Joshi, Babu Valliyodan, Henry T. Nguyen, Dong Xu, Gary Stacey, Jianlin Cheng

Department of Agronomy and Horticulture: Faculty Publications

Background: Transcription factors play the crucial rule of regulating gene expression and influence almost all biological processes. Systematically identifying and annotating transcription factors can greatly aid further understanding their functions and mechanisms. In this article, we present SoyDB, a user friendly database containing comprehensive knowledge of soybean transcription factors.

Description: The soybean genome was recently sequenced by the Department of Energy-Joint Genome Institute (DOE-JGI) and is publicly available. Mining of this sequence identified 5,671 soybean genes as putative transcription factors. These genes were comprehensively annotated as an aid to the soybean research community. We developed SoyDB - a knowledge database …

Transgenic Maize Lines With Cell-Type Specific Expression Of Fluorescent Proteins In Plastids, Amir Sattarzadeh, Jonathan Fuller, Salvador Moguel, Katia Wostrikoff, Shirley Sato, Sarah Covshoff, Tom Clemente, Maureen Hanson, David Stern

Department of Agronomy and Horticulture: Faculty Publications

Plastid number and morphology vary dramatically between cell types and at different developmental stages. Furthermore, in C4 plants such as maize, chloroplast ultrastructure and biochemical functions are specialized in mesophyll and bundle sheath cells, which differentiate acropetally from the proplastid form in the leaf base. To develop visible markers for maize plastids, we have created a series of stable transgenics expressing fluorescent proteins fused to either the maize ubiquitin promoter, the mesophyll-specific phosphoenolpyruvate carboxylase (PepC) promoter, or the bundle sheath-specific Rubisco small subunit 1 (RbcS) promoter. Multiple independent events were examined and revealed that maize codon-optimized versions of YFP and …

Laboratory Performance Of A Mass Flow Sensor For Dry Edible Bean Harvesters, Rodrigo S. Zandonadi, Timothy S. Stombaugh, Scott A. Shearer, Daniel M. Queiroz, Michael P. Sama

Biosystems and Agricultural Engineering Faculty Publications

Due to the importance of yield monitoring, researchers have been developing systems for crops such as tomatoes, forage, sugar cane, citrus, and coffee. A yield monitoring system for pull type dry edible beans harvester has not yet been developed. The goal of this project was to design and test a drive torque measurement device on a clean grain bucket elevator of a dry bean harvester, and evaluate its potential to be used as a mass flow sensor. Tests were conducted in the Yield Monitor Test Facility (YMTF) of University of Kentucky following the recommendation of ASABE Standard S578 (2007) The …

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Letter From The Dean, Michael Vayda

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Instructions For Authors, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

‘Food For Life’: Looking Beyond The Horizon, Charles A. Francis, John W. Doran

Department of Agronomy and Horticulture: Faculty Publications

Our real challenge appears to be anticipating what the major challenges and constraints will be to food production and distribution a decade or more into the future. This could be called ‘Beyond the Horizon’ thinking. Today there is little disagreement over the massive depletion on a global scale of two essential inputs to agriculture: fossil fuels and fresh water. We also recognize that phosphorus is found in concentrated form in only a few deposits in nature, and that agriculture is rapidly using this limited resource and dispersing it through harvested products and soil loss from fields in forms that make …

Structural And Functional Divergence Of A 1-Mb Duplicated Region In The Soybean (Glycine Max) Genome And Comparison To An Orthologous Region From Phaseolus Vulgaris, Jer-Young Lin, Robert M. Stupar, Christian Hans, D. L. Hyten, Scott A. Jackson

Department of Agronomy and Horticulture: Faculty Publications

Soybean (Glycine max) has undergone at least two rounds of polyploidization, resulting in a paleopolyploid genome that is a mosaic of homoeologous regions. To determine the structural and functional impact of these duplications, we sequenced two ~1-Mb homoeologous regions of soybean, Gm8 and Gm15, derived from the most recent ~13 million year duplication event and the orthologous region from common bean (Phaseolus vulgaris), Pv5. We observed inversions leading to major structural variation and a bias between the two chromosome segments as Gm15 experienced more gene movement (gene retention rate of 81% in Gm15 versus 91% in …

Whole Genome Wide Expression Profiles Of Vitis Amurensis Grape Responding To Downy Mildew By Using Solexa Sequencing Technology, Jiao Wu, Yali Zhang, Huiqin Zhang, Hong Huang, Kevin M. Folta, Jiang Lu

School of Information Faculty Publications

Background: Downy mildew (DM), caused by pathogen Plasmopara viticola (PV) is the single most damaging disease of grapes (Vitis L.) worldwide. However, the mechanisms of the disease development in grapes are poorly understood. A method for estimating gene expression levels using Solexa sequencing of Type I restriction-endonuclease-generated cDNA fragments was used for deep sequencing the transcriptomes resulting from PV infected leaves of Vitis amurensis Rupr. cv. Zuoshan-1. Our goal is to identify genes that are involved in resistance to grape DM disease.

Results: Approximately 8.5 million (M) 21-nt cDNA tags were sequenced in the cDNA library derived from PV pathogen-infected …

Nebraska Seed Focus March 2010, Nebraska Crop Improvement Association

Nebraska Seed Focus

Seed Improvement Conference

The Distinguished Service Award

Correction to Seed Book

Nebraska Crop Improvement Association Annual Meeting Minutes

NCIA Board Reorganizes

Nebraska Seed Focus June 2010, Nebraska Crop Improvement Association

Nebraska Seed Focus

Wheat Seed Testing

Maps for Field Inspections

2010 Nebraska Winter Wheat Field Days