Digital Commons Network^™

Duration Analysis Of Technology Adoption Effects Of Dissemination Pathways: A Case Of 'Push-Pull' Technology For Control Of Striga Weeds And Stemborers In Western Kenya, A. W. Murage, G. Obare, J. Chianu, D. M. Amudavi, J. Pickett, Z. R. Khan

All Peer-Reviewed Publications

Since its introduction, the 'push-pull' technology (PPT) has been promoted as an innovative approach for addressing yield losses caused by Striga weeds and stemborer infestations on farmers' maize fields in western Kenya. The technology has been disseminated through different pathways each of which might have different uptake enhancement capabilities. This study was concerned with how different dissemination pathways impacted on farmers' time to adoption while controlling the effects of selected socio-economic and regional factors. This assessment was necessary in order to recommend which dissemination pathway or combination of pathways that could provide an effective dissemination strategy that speed up adoption, …

Pathogen Induced Hypersensitive Response And Systemic Acquired Resistance In The Moss Amblystegium Serpens, Collin Elliot Bowman

Undergraduate Honors Thesis Collection

The moss Amblystegium serpens and the pathogenic fungus Pythium irregulare were used to study plant-pathogen interactions in a non-vascular plant. The major findings in this report include that P. irregulare does infect A. serpens but entire moss death was not noted, 25°C is the optimum temperature for P. irregulare appressoria formation, most appressoria were found on A. serpens leaves, and the SAR response within A. serpens seems to be reducing the number of P. irregulare penetrated moss cells. Future research on the pathogen defense mechanisms of A. serpens is important and promising. When we elucidate these complex chemical processes in …

An Exploration Of Pharmacognosy And Its Potential In The Multi-Faceted Solution Required To Address Hiv/Aids In Sub-Saharan Africa, Alexandra Sassi

Pell Scholars and Senior Theses

This work has both both biological and anthropoligcal foci. It addresses research done on the medicinal properties of plants and how this research could make positive contributions to the current social and biological issues surrounding the HIV/AIDS epidemic in sub-Saharan Africa.

Integrated Soil–Crop System Management For Food Security, Xin-Ping Chen, Zhen-Ling Cui, Peter M. Vitousek, Kenneth Cassman, Pamela A. Matson, Jin-Shun Bai, Qing-Feng Meng, Peng Hou, Shan-Chao Yue, Volker Römheld, Fu-Suo Zhang

Department of Agronomy and Horticulture: Faculty Publications

China and other rapidly developing economies face the dual challenge of substantially increasing yields of cereal grains while at the same time reducing the very substantial environmental impacts of intensive agriculture. We used a model-driven integrated soil–crop system management approach to develop a maize production system that achieved mean maize yields of 13.0 t ha−1 on 66 on-farm experimental plots—nearly twice the yield of current farmers’ practices—with no increase in N fertilizer use. Such integrated soil–crop system management systems represent a priority for agricultural research and implementation, especially in rapidly growing economies.

Desarrollo De Líneas In Situ De Sorgo Por Pequeños Productor@S En La Región Norte De Nicaragua Mediante Los Métodos De Fitomejoramiento Participativo, Silvio Aguirre A., Orlando Gómez, Blanca Castro, Rolando Herrera

INTSORMIL Presentations

El sorgo de grano blanco (Sorghum bicolor [L.] Moench), juega un papel importante de bido a su adaptación, consumo humano y animal.

En 2003 el proyecto CIAT-CIRAD, en Nicaragua y los productores fitomejoradores de Madriz, realizaron cruzas de variedades locales, por líneas africanas.

En 2005 el CIPRES continúo los procesos de selección in-situ en las poblaciones segregantes derivadas de estas cruzas.

Para responder a la demanda de variedades mejoradas. Paralelamente se llevo por el científico en la estación experimental.

A partir del 2006 se realizaron evaluaciones de rendimiento, con el propósito de comprobar la eficiencia de selección por productores, …

The Role Of Sorghum In Food Security In Central America, Lloyd W. Rooney

INTSORMIL Presentations

Discusses the qualities of sorghum that make it suitable for human consumption, with a focus on its use in Central America.

Growing South Dakota (Spring 2011), College Of Agriculture &. Biological Sciences

Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)

[Page] 2 Classroom to Careers: An Optimistic Outlook Awaits Ag & Biological Sciences Graduates
[Page] 5 New Opportunities: Intro Ag Courses To Be Offered in Rapid City
[Page] 6 Budget Reality: Funding Cuts Prompt Structure and Staff Changes
[Page] 7 Gearing Up for DakotaFest: Replicated SDSU Campus, Educational Forums and Fundraising Auction Planned
[Page] 8 Continuing a Legacy: &1 Million Livestock Judging Endowment Being Established
[Page] 10 4-H Fun: Unique 4-H Activities Spark Student Interest in Science
[Page] 12 Innovative Outreach: BBQ Boot Camp Connect Consumers to Meat Industry
[Page] 13 College News
[Page] 14 Relevant Research: New, More Efficient …

Review Of The Ecology And Management Of Prairies In The Central United States. By Chris Helzer., David J. Gibson

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

This relatively short book is an informative and easyto- read account of the author's philosophy and advice on how to manage prairies in the Central U.S., an area corresponding to the eastern portion of the Great Plains where tall- and mixed-grass prairie occurred. With fragmentation and huge losses of this region's natural prairie habitat, there is a growing appreciation for active management of remnants and prairie restoration. This book provides an excellent introduction to this topic.

Review Of The Tallgrass Prairie Center Guide To Prairie Restoration In The Upper Midwest. By Daryl Smith, Dave Williams, Greg Houseal, And Kirk Henderson., Gerry Steinauer

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Tallgrass prairie restoration in the Upper Midwest is the focus of this guide. Its geographic area of coverage includes the eastern fifth of South Dakota and Nebraska and northeast Kansas, a region some ascribe to the eastern Great Plains. Two types of prairie restoration are dealt with: prairie reconstruction, which the authors define as creating prairie from scratch on sites where prairie plants no longer exist; and prairie remnant restoration, defined as upgrading degraded existing prairies. The book comprises five sections: "Reconstruction Planning," "Implementing Reconstruction," "Prairie Restoration and Management," "Special Cases," and "Native Seed Production." There are 16 chapters, each …

Do Invasive Riparian Woody Plants Affect Hydrology And Ecosystem Processes?, Julie Huddle, Tala Awada, Derrel Martin, Xinhua Zhou, Sue Ellen Pegg, Scott Josiah

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

© 2011 Copyright by the Center for Greot Plains Studies, University of Nebraska-Lincoln

Vegetation Classification And Mapping Of Homestead National Monument Of America, Project Report, Kelly Kindscher, Hayley Kilroy, Jennifer Delisle, Quinn Long, Hillary Loring, Kevin Dobbs, Jim Drake

United States National Park Service: Publications

Executive Summary

Homestead National Monument (HOME) was created at the to celebrate the significance of the Homestead Act of 1862 which granted 160 acres of free land to claimants and was one of the most significant and enduring events in the westward expansion of the United States. The National Monument encompasses 184 acres in Gage County, west of Beatrice, Nebraska. This unique site also hosts the oldest prairie restoration in the National Park system, and the second-oldest tallgrass prairie restoration known. This park unit also has a small remnant of native tallgrass prairie and remnants of bur-oak forest.

A three-year …

Nebline, April 2011

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Feature: Supplemental Kits Make Learning Nutrition Fun

Farm Views

Horticulture

Food & Fitness

Home & Family Living

Environmental Focus

Urban Agriculture

4-H & Youth

Community Focus

Extension Calendar

Nutrition Education Program

Family and Community Education (FCE) Clubs

and other extension news and events

Sfa Gardens Newsletter, Spring 2011, Sfa Gardens, Stephen F. Austin State University

SFA Gardens Newsletters

No abstract provided.

Argonaute10 And Argonaute1 Regulate The Termination Of Floral Stem Cells Through Two Micrornas In Arabidopsis, Lijuan Ji, Xigang Liu, Jun Yan, Wenming Wang, Rae Eden Yumul, Yun Ju Kim, Thanh Theresa Dinh, Jun Liu, Xia Cui, Binglian Zheng, Manu Agarwal, Chunyan Liu, Xiaofeng Cao, Guiliang Tang, Xuemei Chen

Plant and Soil Sciences Faculty Publications

Stem cells are crucial in morphogenesis in plants and animals. Much is known about the mechanisms that maintain stem cell fates or trigger their terminal differentiation. However, little is known about how developmental time impacts stem cell fates. Using Arabidopsis floral stem cells as a model, we show that stem cells can undergo precise temporal regulation governed by mechanisms that are distinct from, but integrated with, those that specify cell fates. We show that two microRNAs, miR172 and miR165/166, through targeting APETALA2 and type III homeodomain-leucine zipper (HD-Zip) genes, respectively, regulate the temporal program of floral stem cells. In particular, …

Dose–Sensitivity, Conserved Non-Coding Sequences, And Duplicate Gene Retention Through Multiple Tetraploidies In The Grasses, James C. Schnable, Brent S. Pedersen, Sabarinath Subramaniam, Michael Freeling

Department of Agronomy and Horticulture: Faculty Publications

Whole genome duplications, or tetraploidies, are an important source of increased gene content. Following whole genome duplication, duplicate copies of many genes are lost from the genome. This loss of genes is biased both in the classes of genes deleted and the subgenome from which they are lost. Many or all classes are genes preferentially retained as duplicate copies are engaged in dose sensitive protein–protein interactions, such that deletion of any one duplicate upsets the status quo of subunit concentrations, and presumably lowers fitness as a result. Transcription factors are also preferentially retained following every whole genome duplications studied. This …

Wood Anatomy Of Family Salvadoraceae From The Indian Subcontinent With Special Reference To The Ultrastructure Of The Vessel Wall, Vishakha Saxena, Sangeeta Gupta

Aliso: A Journal of Systematic and Floristic Botany

The present study describes the wood microstructure of Azima tetracantha, Salvadora oleoides, and S. persica, the members of family Salvadoraceae represented in the Indian Subcontinent. An identification key based on wood anatomical features has been developed for the separation of the species. SEM studies revealed the presence of vesturing in intervessel pits of Salvadora.

Plants Of The Colonet Region, Baja California, Mexico, And A Vegetation Map Of Colonet Mesa, Alan B. Harper, Sula Vanderplank, Mark Dodero, Sergio Mata, Jorge Ochoa

Aliso: A Journal of Systematic and Floristic Botany

The Colonet region is located at the southern end of the California Floristic Province, in an area known to have the highest plant diversity in Baja California. A preliminary list of vouchered specimens is developed for the area, and a vegetation map for Colonet Mesa is presented. The Colonet region has at least 435 vascular plant taxa, of which 383 are native to Baja California, and 52 are endemic or nearly endemic. This list includes five local endemic taxa known only from the Colonet region, 18 taxa on the California Native Plant Society List 1B of taxa that are "rare, …

Distribution And Regional Ecology Of Californian Palm Oases Interpreted From Google Earth Images, Richard A. Minnich, Ernesto Franco-Vizcaíno, Mario Salazar-Ceseña

Aliso: A Journal of Systematic and Floristic Botany

The native fan palms of the Baja California peninsula (Mexico) and neighboring southern California (USA) comprise two species each in Washingtonia and Brahea. While these are among the most familiar ornamental palms in the world, many features of their taxonomy, distribution, and environmental relationships remain unresolved. We utilized Google Earth Digital Globe imagery (and limited surveys by air and land) to develop the first map detailing the geographic distribution of palm populations in the Peninsular Range Province (PRP) and used these data to formulate new hypotheses on their biotic and abiotic relationships. We inventoried 15,216 populations covering an area …

Inta Segovia, A New Sorghum Variety For The Dry Zones Of Nicaragua, Intsormil

INTSORMIL Impacts and Bulletins

The Sandanista Government through the Instituto Nicaraguense de Tecnologia (INTA) officially released the new improved sorghum variety, INTA Segovia on January 14, 2011. This improved variety will benefit the resource-poor farmers that grow sorghum on the hillsides (see photo) in dry zones (40 percent of the land area in Nicaragua). This variety will have a significant economic impact in Nicaragua and in neighboring countries as it produces well in drought prone areas which lack sufficient rainfall for growing maize. INTA Segovia, under drought conditions, produces higher yields than currently grown sorghum varieties. Drought tolerance is due to the large root …

Forage News [2011-03], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Kentucky Alfalfa Awards
• KFGC Update
• Grazing School Offers Classroom and Field (Hands-on) Activities
• Roundup Ready® Alfalfa
• Ash Content in Hay
• Caution Advised with Grazing & Cutting Heights of Orchardgrass
• Heart of America Grazing Conference Proceedings and Photos
• Agriculture Returns as a Bright Spot in the Economic Recovery

Nebline, March 2011

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Feature: Connect, Learn, and Share With Extension

Farm Views

Horticulture

Food & Fitness

Home & Family Living

Environmental Focus

Urban Agriculture

4-H & Youth

Community Focus

Extension Calendar

Nutrition Education Program

Family and Community Education (FCE) Clubs

and other extension news and events

Weed Awareness Insert

Hybrid Oaks: Full Of Vexation And Wonder, W. John Hayden

Biology Faculty Publications

Distinguishing different species of oak in the forests of eastern North America can be challenging. For one thing, there are simply a lot of different species to sort out. A recent reference (Stein et al. 2003), describes 50 species in the genus Quercusoccurring naturally east of the 100th meridian, and 90 species are distinguished for all of North America north of Mexico (Nixon 1997). With so many species to parse, confident identification requires careful study of leaves, stem and leaf hairiness, and fully mature acorns with their caps. But care is not always enough, because in addition to the …

What Is The Potential Of Substituting Legumes For Synthetic Nitrogen In Warm Season Perennial Grasses Used For Stocker Cattle Grazing?, J. Biermacher, John A. Guretzky, Ryan Reuter, Maru Kering, Twain Butler, Job Springer, James Rogers, John Blanton, Joe Bouton

Department of Agronomy and Horticulture: Faculty Publications

Stocker cattle grazing warm season perennial grasses is an important economic activity in the southern Great Plains. Substantial increases in the price of nitrogen fertilizer is negatively affecting forage producers’ profitability. Two alternative nitrogen management systems that use annual and perennial legumes have been developed for bermudagrass pastures. The goal of the study is to determine if the legumes systems are more profitable than the conventional practice of applying synthetic sources of nitrogen. Enterprise budgeting techniques were employed to compare the economics of the legume systems relative to the common practice. Results of the two-year grazing study show that the …

Comparison Of Various Configurations Of Cdc-Type Traps For The Collection Of Phlebotomus Papatasi Scopoli In Southern Israel, Daniel L. Kline, Jerome Hogsette, Gunter Muller

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

We conducted two experiments to determine the best CDC-trap configuration for catching male and female Phlebotomus papatasi. First, visual features were evaluated. Standard CDC traps were modified to have black or white catch bags, black or white lids, or no lids and these were tried in different combinations. Significantly more male sand flies were caught by darker traps; significantly more females were captured by traps with either all black or a combination of black and white features. Attraction may be due to dark color or contrast in colors. CDC traps with suction and the following features were also evaluated: …

Wayne E. Sabbe Arkansas Soil Fertility Studies 2010, Nathan A. Slaton

Arkansas Agricultural Experiment Station Research Series

Rapid technological changes in crop management and production require that the research efforts be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops.

The Fundamentals Of Nutrient Management, Rhonda Miller, Clark Israelsen, Jim Bowcutt, Neils Hansen

All Current Publications

This publication gives best management practices of nutrient management in livestock and dairy facilities.

What's New In Forage Equipment?, Dan Undersander

Kentucky Alfalfa and Stored Forage Conference

The forage equipment industry is changing in response to farmers’ needs. These changes consist of innovations to increase capacity, to improve the usability of the machine, and to improve the quality of the product. Most changes are occurring with existing equipment, but some totally new product innovations are occurring.

Alfalfa Hay For Horses: Myths Vs. Reality, Laurie Lawrence

Kentucky Alfalfa and Stored Forage Conference

Does it really matter if hay has some mold in it?

Hay that is high in dust or mold can irritate the horse’s respiratory tract. Optimum athletic performance depends on a healthy respiratory tract, therefore dusty/moldy hay should never be fed to horses used (or intended for) athletic events. A chronic respiratory disease commonly called “heaves” can be aggravated by moldy and dusty hay. Horses with heaves can have so much difficulty breathing that even mild exercise is impossible. In addition, moldy hay may contain toxins that could affect the horse if they are ingested.

Horse owners should not rely …

Hay Drying, Preservatives, Conditioning, Ash Content, Dan Undersander

Kentucky Alfalfa and Stored Forage Conference

Drying forage for hay has always been a challenge. While we cannot control the weather we can manage cut forage to maximize drying. The purpose of this paper is to give a few principles of hay and silage making and discuss machinery available relative to these principles. Then we will also talk about minimizing ash in hay to optimize the total digestible nutrients of the forage.

Crop Updates 2011 - Pests And Diseases, Jeff Russell, Paul Umina, Svetlana Micic, Laura Fagan, Mark Seynour, Tony Dore, Pam Burgess, John Majewski, Manisha Shankar, Rob Loughman

Crop Updates

This session covers four papers from different authors:

1. Grains biosecurity – everyone’s business, Jeff Russell, Department of Agriculture and Food

2. Control of insect and mite pests in grains – insecticide resistance and integrated pest management (IPM), Paul Umina¹, Svetlana Micic² and Laura Fagan³, ¹CESAR and The University of Melbourne, ²Department of Agriculture and Food, ³University of Western Australia

3. Effect of cropping rotations on pest mites of broadacre agriculture, Svetlana Micic, Mark Seymour, Tony Dore and Pam Burgess, Department of Agriculture and Food

4. Common bunt resistance in …