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2008

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Articles 241 - 270 of 326

Full-Text Articles in Agriculture

2008 Weed Science Research Report – Pink Section, Ndsu Weed Science, Dept. Of Plant Sciences Jan 2008

2008 Weed Science Research Report – Pink Section, Ndsu Weed Science, Dept. Of Plant Sciences

Plant Sciences Weed Science Reports

The Weed Science team at North Dakota State University conduct field research in the State of North Dakota. This specific document reports on field research conducted in 2008. It includes work on Canada thistle, leafy spurge, purple loosestrife in North Dakota.

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2008 Weed Science Research Report – Tan Section, Ndsu Weed Science, Dept. Of Plant Sciences Jan 2008

2008 Weed Science Research Report – Tan Section, Ndsu Weed Science, Dept. Of Plant Sciences

Plant Sciences Weed Science Reports

The Weed Science team at North Dakota State University conduct field research in the State of North Dakota. This specific document reports on field research conducted in 2008. It includes work on adjuvants and formulations in North Dakota.

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2008 Weed Science Research Report – Yellow Section, Ndsu Weed Science, Dept. Of Plant Sciences Jan 2008

2008 Weed Science Research Report – Yellow Section, Ndsu Weed Science, Dept. Of Plant Sciences

Plant Sciences Weed Science Reports

The Weed Science team at North Dakota State University conduct field research in the State of North Dakota. This specific document reports on field research conducted in 2008. It includes work on minor crops and the management of several weeds in North Dakota.

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Content Preparation Of Pre-Service Agricultural Education Teachers And Its Influence On Their Content Knowledge, Amber Houck Jan 2008

Content Preparation Of Pre-Service Agricultural Education Teachers And Its Influence On Their Content Knowledge, Amber Houck

University of Kentucky Master's Theses

Content knowledge preparation for teachers is a crucial component of the modal curriculum model for education. The purpose of this study was to determine if the amount and quality of coursework preparation of pre-service University of Kentucky agriculture teachers influences their content knowledge as defined by the Praxis II agriculture exam scores. This study concluded that there was variability in coursework preparation of pre-service agriculture teachers at the University of Kentucky. Praxis II exam scores of pre-service teachers indicated that most students are meeting an adequate content knowledge level based on the exam material. It can also be concluded that …

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Omtvedt Innovation Award Winners, John Owens Jan 2008

Omtvedt Innovation Award Winners, John Owens

John Owens: Speeches and Appearances

It is a wonderful pleasure to have this opportunity today to present, two Omtvedt Innovation Awards to Institute colleagues whose outstanding work is a source of tremendous pride and inspiration for us all.

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Contents, Discovery Editors Jan 2008

Contents, Discovery Editors

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

No abstract provided.

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Letter From The Dean, Lalit R. Verma Jan 2008

Letter From The Dean, Lalit R. Verma

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

No abstract provided.

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Instructions For Authors, Discovery Editors Jan 2008

Instructions For Authors, Discovery Editors

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

No abstract provided.

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Native Perennial Grasses In Highway Medians: Pre- And Postplant Techniques For Establishment In A Mediterranean Climate, Stephen L. Young, Victor P. Claassen Jan 2008

Native Perennial Grasses In Highway Medians: Pre- And Postplant Techniques For Establishment In A Mediterranean Climate, Stephen L. Young, Victor P. Claassen

West Central Research and Extension Center, North Platte

Within highway rights-of-way, native perennial grasses provide desirable services to support natural and human constructed ecosystems. However, native perennial grass establishment in annual grass dominated roadsides of semiarid and Mediterranean climates of the western United States requires specific cultural and chemical management treatments to control weeds. In 2004, field studies were conducted in Sacramento Valley, California to determine the effect of herbicide, disc cultivation, and species selection on native perennial grass establishment and annual weed persistence. Perennial grass species mixes common to drier and wetter upland areas in northern California were drill seeded at two sites (I-5 North and I-5 …

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Colloid Mediated Transport Of Heavy Metals In Soils Following Reclamation With And Without Biosolid Application, Jarrod O. Miller Jan 2008

Colloid Mediated Transport Of Heavy Metals In Soils Following Reclamation With And Without Biosolid Application, Jarrod O. Miller

University of Kentucky Doctoral Dissertations

Soils disturbed by strip mining practices may have increased colloid loads moving to groundwater resources, also enhancing the transport of contaminants into our water resources. We hypothesize that contaminant transport within soils following mining is enhanced by colloid mobility. Two sites were chosen for this study, a 30-year old reclaimed strip mine in southwest Virginia and a recently mined area from eastern Kentucky. Intact reclaimed soil monoliths were retrieved from sandstone derived soils in southwestern Virginia. Reclaimed monoliths from eastern Kentucky were recreated in the lab. Intact undisturbed (native) soil monoliths representing the soils before mining were also sampled for …

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Map-Based Cloning Of An Anthracnose Resistance Gene In Medicago Truncatula, Shengming Yang Jan 2008

Map-Based Cloning Of An Anthracnose Resistance Gene In Medicago Truncatula, Shengming Yang

University of Kentucky Doctoral Dissertations

Anthracnose, caused by the fungal pathogen Colletotrichum trifolii, is one of the most destructive diseases of alfalfa worldwide. Cloning and characterization of the host resistance (R) genes against the pathogen will improve our knowledge of molecular mechanisms underlying host resistance and facilitate the development of resistant alfalfa cultivars. However, the intractable genetic system of cultivated alfalfa, owing to its tetrasomic inheritance and outcrossing nature, limits the ability to carry out genetic analysis in alfalfa. Nonetheless, the model legume Medicago truncatula, a close relative of alfalfa, provides a surrogate for cloning the counterparts of many agronomically important genes in …

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The Role Of Spiders In The Detrital Food Web Of An Eastern Deciduous Forest, Erin Elizabeth Hladilek Jan 2008

The Role Of Spiders In The Detrital Food Web Of An Eastern Deciduous Forest, Erin Elizabeth Hladilek

University of Kentucky Doctoral Dissertations

Historically, terrestrial food web research has focused on describing the structure of aboveground grazing webs, and determining how interactions among plants, herbivores and higher trophic levels influence primary productivity. Detrital food webs however, play a significant role in regulation of ecosystem dynamics through direct impacts on decomposition. Unraveling the complex nature of detrital food web structure is critical to developing a better understanding of ecosystem function. Therefore the primary objective of this research was to describe the structure of the leaf-litter food web in a temperate deciduous forest, with emphasis on interactions between a community of generalist predators, the forest-floor …

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Optimum Stand Density Of Spring Triticale For Grain Yield And Alfalfa Establishment, Lance R. Gibson, Jeremy W. Singer, Ronald Vos, Brock C. Blaser Jan 2008

Optimum Stand Density Of Spring Triticale For Grain Yield And Alfalfa Establishment, Lance R. Gibson, Jeremy W. Singer, Ronald Vos, Brock C. Blaser

Faculty Work Comprehensive List

Triticale (×Triticosecale Wittmack) has potential as a feed crop in the north central United States and could also function as a companion crop for alfalfa (Medicago sativa L.) establishment. The objectives of this research were to assess the suitability of a short-statured spring triticale as a companion crop and determine optimum triticale seeding rates for grain yield and alfalfa establishment. Spring triticale ‘Trimark 37812’ and alfalfa were grown in companion at Ames and Sioux Center, IA during 2004 and 2005. Triticale was seeded at 198, 297, 396, 495, and 594 pure live seeds (PLS) m−2 and alfalfa …

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2008 Weed Science Research Report – Gold Section, Ndsu Weed Science, Dept. Of Plant Sciences Jan 2008

2008 Weed Science Research Report – Gold Section, Ndsu Weed Science, Dept. Of Plant Sciences

Plant Sciences Weed Science Reports

The Weed Science team at North Dakota State University conduct field research in the State of North Dakota. This specific document reports on field research conducted in 2008. It includes work on sugarbeet and the management of several weeds in North Dakota.

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2008 Weed Science Research Report – Green Section, Ndsu Weed Science, Dept. Of Plant Sciences Jan 2008

2008 Weed Science Research Report – Green Section, Ndsu Weed Science, Dept. Of Plant Sciences

Plant Sciences Weed Science Reports

The Weed Science team at North Dakota State University conduct field research in the State of North Dakota. This specific document reports on field research conducted in 2008. It includes work on small grains and the management of several weeds in North Dakota.

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Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 9 2008, Several Authors Jan 2008

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 9 2008, Several Authors

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

No abstract provided.

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Nebraska Winery And Grape Growers Forum And Trade Show, John Owens Jan 2008

Nebraska Winery And Grape Growers Forum And Trade Show, John Owens

John Owens: Speeches and Appearances

Good afternoon, everyone, and welcome to this 11th annual Nebraska Winery and Grape Growers Forum and Trade Show. I'm John Owens, University of Nebraska Vice President and Harlan Vice Chancellor of the Institute of Agriculture and Natural Resources. I'm delighted to be with you on this second day of a very fine and informative conference.

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Nebraska Urban Pest Management Conference, John Owens Jan 2008

Nebraska Urban Pest Management Conference, John Owens

John Owens: Speeches and Appearances

It is my very great pleasure to welcome each of you to this 16th Annual Nebraska Urban Pest Management Conference here in Lincoln. I'm John Owens, University of Nebraska Vice President and Harlan Vice Chancellor of the Institute of Agriculture and Natural Resources, and I am so glad to be here with you this morning. As an entomologist, this conference certainly is one for which I have great affinity and much interest.

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Carl Albin Spader Leadership Luncheon, John Owens Jan 2008

Carl Albin Spader Leadership Luncheon, John Owens

John Owens: Speeches and Appearances

In the past two years you've had a number of opportunities to explore and strengthen your own, personal leadership abilities. You've also been able to observe and study the leadership styles of people working at the state, national, and international levels.

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Casnr Salute To Graduates, John Owens Jan 2008

Casnr Salute To Graduates, John Owens

John Owens: Speeches and Appearances

We appreciate your being with us this afternoon as we celebrate the accomplishments of tomorrow's graduates from the University of Nebraska-Lincoln. Thank you for attending and, congratulations to the class of 2008! This ceremony has become both a fixture and a tradition in the College of Agricultural Sciences and Natural Resources. As a matter of fact, it took the national "First Place Award" in a 2006 competition that was open to all universities in the United States.

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Louv Presentation, John Owens Jan 2008

Louv Presentation, John Owens

John Owens: Speeches and Appearances

Good evening everyone, and welcome to this highly anticipated presentation by Richard Louv, author of "Last Child in the Woods: Saving our Children from Nature Deficit Disorder."

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Master Conservationist Presentations 2008, John Owens Jan 2008

Master Conservationist Presentations 2008, John Owens

John Owens: Speeches and Appearances

Our first Master Conservationist award this evening goes to Curtis and Sandi Roth of Gordon, in the Panhandle, District A. Would Curtis and Sandi please come forward? When Roth decided to change his 2,030 dryland corn acres from a conventional to a no-till system in 1993, most of the information came from newsletters and magazines about experiences farther east. He began by adapting methods and equipment to the climate and soils of northwestern Nebraska. Today Curtis uses no till exclusively and follows a rotation of winter and spring wheat, sunflowers, corn, alfalfa, and millet. This no-till system has allowed Roth …

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Ianr Research And Extension Centers And Their Associated Districts, John Owens Jan 2008

Ianr Research And Extension Centers And Their Associated Districts, John Owens

John Owens: Speeches and Appearances

It's a pleasure to have this opportunity to speak with you about the University’s four strategically placed Research and Extension Centers and their associated extension districts, all part of the Institute of Agriculture and Natural Resources at the University of Nebraska-Lincoln.

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Krvn - Gudmundsen Field Day, John Owens Jan 2008

Krvn - Gudmundsen Field Day, John Owens

John Owens: Speeches and Appearances

John, the Institute of Agriculture and Natural Resources has various locations throughout Nebraska for research and educational purposes. One such location is the Gudmundsen Sandhills Laboratory, which this past week was the site for the annual Youth Field Day.

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Presentation Remarks: Gamma Sigma Delta Award Of Merit, John Owens Jan 2008

Presentation Remarks: Gamma Sigma Delta Award Of Merit, John Owens

John Owens: Speeches and Appearances

I am really pleased to have this opportunity to present the 2008 Gamma Sigma Delta Award of Merit to Alan Baquet. Being here to say "Congratulations, Alan," is a special treat for me - and I do say, "Congratulations, Alan." You are very deserving of this honor.

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Bullets For Casnr Faculty Meeting Remarks, John Owens Jan 2008

Bullets For Casnr Faculty Meeting Remarks, John Owens

John Owens: Speeches and Appearances

No abstract provided.

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National Science Foundation - 4-H Robotics Grant Announcement, John Owens Jan 2008

National Science Foundation - 4-H Robotics Grant Announcement, John Owens

John Owens: Speeches and Appearances

Bullets for announcement of the nearly $2.5 million grant to 4-H from the National Science Foundation to take its robotics curriculum national.

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Chemical Control Of Septoria Blight Of Parsley Caused By Septoria Petroselini, Fati̇h Mehmet Tok Jan 2008

Chemical Control Of Septoria Blight Of Parsley Caused By Septoria Petroselini, Fati̇h Mehmet Tok

Turkish Journal of Agriculture and Forestry

The effects of various fungicides on spore germination, mycelial growth, seed transmission, and infection by Septoria petroselini Desm., the causal agent of Septoria blight of parsley, were determined in this study. Eleven fungicides (azoxystrobin, benomyl, captan, copper oxychloride, kresoxim-methyl mancozeb, maneb, propineb, tebuconazole, thiram, and trifloxystrobin) were tested at various concentrations ranging from 0.025 to 50 mg l^{-1} in spore germination and mycelial growth assays. Tebuconazole was the most effective fungicide in all the experiments, with an EC_{50} value < 0.052 mg l^{-1}, followed by azoxystrobin, captan, and trifloxystrobin, with EC_{50} values of 0.053, 0.06, and 0.066 mg l^{-1}, respectively. Many of the fungicides were effective on spore germination in PDA medium at concentrations ranging from 0.052 mg l^{-1} (Tebuconazole) to 23.032 mg l^{-1} (copper oxychloride). Captan, mancozeb, maneb, and thiram were very effective at reducing spore germination, but were less effective at reducing mycelial growth, for which their EC_{50} values were up to 735-, 192-, 192-, and 191-fold higher, respectively. Seed transmission of Septoria blight of parsley was controlled by tebuconazole, benomyl, azoxystrobin, kresoxim-methyl, and captan, which had inhibition rates of up to 95%, 93%, 93%, and 66%, respectively. Azoxystrobin, benomyl, kresoxim-methyl, trifloxystrobin, and tebuconazole inhibited Septoria blight in vivo, but captan, mancozeb, and maneb were effective at reducing the number of lesions only when they were applied before inoculation. Copper oxychloride, the most extensively used fungicide for controlling Septoria blight by parsley growers, was surprisingly the least effective in all the experiments.

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Production Potential Of A Natural Pasture Compared To A Wheat Pasture, Both Grazed By Lactating Goats Under Mediterranean Climate Conditions, Basri̇ Hakan Hakyemez, Ahmet Gökkuş, İsmai̇l Yaman Yurtman, Türker Savaş Jan 2008

Production Potential Of A Natural Pasture Compared To A Wheat Pasture, Both Grazed By Lactating Goats Under Mediterranean Climate Conditions, Basri̇ Hakan Hakyemez, Ahmet Gökkuş, İsmai̇l Yaman Yurtman, Türker Savaş

Turkish Journal of Agriculture and Forestry

The aim of this study was to extend the grazing period using a wheat pasture that produced high quality forage, and to compare the productivity of natural and wheat pastures for grazing goats during a 3-year period (2003-2005) in a Mediterranean zone of Turkey. Twelve 3-4-year-old Saanen goats were allocated to each pasture (10 goats ha^{-1}). Pastures were grazed for 2 months (May and June) in 2003 and for 3 months (April, May, and June) in 2004 and 2005. In the study, pasture yield and hay intake, crude protein (CP), neutral detergent fiber (NDF), and acid detergent fiber (ADF) content …

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Effect Of Different Planting Dates On Yield And Yield Components Of Peanut (Arachis Hypogaea L.), Öner Canavar, Mustafa Ali̇ Kaynak Jan 2008

Effect Of Different Planting Dates On Yield And Yield Components Of Peanut (Arachis Hypogaea L.), Öner Canavar, Mustafa Ali̇ Kaynak

Turkish Journal of Agriculture and Forestry

This study was conducted in the experiment fields at the Field Crops Department of the Faculty of Agriculture at Adnan Menderes University in 2004-2005. The experiment was performed in a split-plot design with 3 replications. The goals of this study were to determine the appropriate planting date for peanut under the ecological conditions of Aydın and to investigate the effect of different planting dates on some agronomic traits, yield, and yield components of 3 commercial peanut cultivars (Gazipaşa, Florispan, and NC-7) and the local cultivar. It was determined that the planting date had a statistically significant effect on pod yield, …

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