Digital Commons Network^™

Propagation Of Woody Plants, Larry A. Sagers

All Archived Publications

No abstract provided.

The Effect Of Ginseng On Biofilm Formation By Wild Type And Mutant Strains Of Pseudomonas Aeruginosa, Premi Shekar

Morehead State Theses and Dissertations

A thesis presented to the faculty of the College of Science and Technology at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science by Premi Shekar on June 25, 2008.

Wholetree Substrate And Fertilizer Rate In Production Of Greenhouse-Grown Petunia (Petunia ×Hybrida Vilm.) And Marigold (Tagetes Patula L.), Glenn B. Fain, Charles H. Gilliam, Jeff L. Sibley, Cheryl R. Boyer, Anthony L. Witcher

Agricultural and Environmental Sciences Faculty Research

A substrate component (WholeTree) made from loblolly pine (Pinus taeda L.) was evaluated along with starter fertilizer rate in the production of greenhouse-grown petunia (Petunia ×hybrida Vilm. ‘Dreams Purple’) and marigold (Tagetes patula L. ‘Hero Spry’). Loblolly pine from a 12-year-old plantation were harvested at ground level, chipped, and further processed through a hammer mill to pass a 0.64-cm screen. The resulting WholeTree (WT) substrate was used alone or combined with 20% (WTP2) or 50% (WTP5) (by volume) Canadian sphagnum peatmoss and compared with an industry standard peat-lite (PL) mix of 8 peatmoss : 1 vermiculite : 1 perlite (by …

Soil Morphology, Depth And Grapevine Root Frequency Influence Microbial Communities In A Pinot Noir Vineyard, Rebecca E. Drenovsky, K. L. Steenwerth, J. J. Lambert, D. A. Kluepfel, K. M. Scow, D. R. Smart

Biology

The composition of microbial communities responds to soil resource availability, and has been shown to vary with increasing depth in the soil profile. Soil microorganisms partly rely on root-derived carbon (C) for growth and activity. Roots in woody perennial systems like vineyards have a deeper vertical distribution than grasslands and annual agriculture. Thus, we hypothesized that vineyard soil microbial communities along a vertical soil profile would differ from those observed in grassland and annual agricultural systems. In a Pinot noir vineyard, soil pits were excavated to ca. 1.6–2.5m, and microbial community composition in ‘bulk’ (i.e., no roots) and ‘root’ (i.e., …

Variation In Resource Acquisition And Utilization Traits Between Native And Invasive Perennial Forbs, Rebecca E. Drenovsky, Christina E. Martin, Molly R. Falasco, Jeremy J. James

Biology

Understanding the functional traits that allow invasives to outperform natives is a necessary first step in improving our ability to predict and manage the spread of invaders. In nutrient-limited systems, plant competitive ability is expected to be closely tied to the ability of a plant to exploit nutrient-rich microsites and use these captured nutrients efficiently. The broad objective of this work was to compare the ability of native and invasive perennial forbs to acquire and use nutrients from nutrient-rich microsites. We evaluated morphological and physiological responses among four native and four invasive species exposed to heterogeneous (patch) or homogeneous (control) …

B.R. Wells Rice Research Studies 2007, R. J. Norman, J. F. Meullenet, K. A.K. Moldenhauer

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

Evaluation Of Pearl Millet For Yield And Downy Mildew Resistance Across Seven Countries In Sub-Saharan Africa, J. P. Wilson, M. D. Sanogo, S. K. Nutsugah, I. Angarawai, A. Fofana, H. Traore, I. Ahmadou, F. P. Muuka

INTSORMIL Scientific Publications

Forty pearl millet germplasms consisting of traditional and improved open pollinated varieties, hybrids, and inbreds were selected to represent diversity for grain yield or quality, fertility restoration for specific cytoplasms, resistance to diseases or pests, variation in height and maturity, and origin. Evaluations were conducted in field trials in Ghana, Mali, Nigeria, and Senegal in 2003 and 2004 and in Burkina Faso, Niger, and Zambia in 2004. Data were collected on yield, downy mildew incidence, maturity, plant height, and panicle length. Variation occurred for all traits across locations and genotypes. Across locations and years, Sosat-C88, ICMV IS 89305, Gwagwa, NKK, …

Nebline, May 2008

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

The Ants Go Marching...
What’s Good About Ants?
Pond Measurements
Establishing a Commercial Vineyard
Tips For Handling Pesticides Safely
It’s Spring: Watch for Signs of Termites
Everything Homeowners Need to Know About Termite Control
Reduce Your Risk of Rabies Exposure
Rabies Symptoms
Put Your Hummingbird Feeders Out Now
$tretch Your Food Dollar by Buying Fruits and Vegetables in Season
Orange Pork Chops Recipe
Basic Foods for Cupboard, Fridge & Freezer: Create Your Own List!
Presidents’ Notes—Bonnie’s Bits
Household Hints: Many uses for Baking Soda
FCE News & Events
Clean Up of Compact Fluorescent Light Bulbs
It’s About Time (Management)
Strengthening …

Physiological Response And Nutrient Recovery Of Cool-Season Turfgrasses Under Various Environmental Stresses, William Sarvis

All Theses

Potassium (K) is an essential plant nutrient commonly applied to increase creeping bentgrass tolerance to environmental stresses and maintain overall turfgrass stand health. Limited research defining the K requirement of creeping bentgrass under heat and drought stress exists. Furthermore, research investigating K, calcium (Ca), and magnesium (Mg) recovery under abiotic stress has been inconsistent. To build on previous research and investigate the differences between liquid and granular K fertilization, experiments were conducted to evaluate the performance of liquid and granular K carriers in conjunction with liquid calcium and magnesium on their ability to suppress summer bentgrass decline of creeping bentgrass …

In Vitro And In Vivo Techniques For Screening New Natural Product-Based Fungicides For Control Of Strawberry Anthracnose, Maritza Abril

Dissertations

Seven plant pathogenic fungi (Botrytis cinerea, Colletotrichum acutatum, C. fragariae, C. gloeosporioides, Fusarium oxysporum, Phomopsis obscurans, and P. viticola) valuable in screening fungicide efficacy were tested. Optimal and reproducible conditions for germination of these selected fungi were established by incorporating Roswell Park Memorial Institute 1640 (RPMI) as a medium of known composition and washing conidia to remove innate germination inhibitors. This step reduced average fungal germination times between 3.5 h and 21.2 h. The natural product-based fungicide, sampangine, seven sampangine analogs (4-bromo-sampangine, 4-methoxysampangine, benzo[4,5]sampangine, liriodenine Mel AMC-XIII-103, onychine, cryptolepine, and liriodenine CDH-II-37), plus seven conventional fungicides (benomyl, captan, cyprodinil, fenbuconazole, …

Root Disease Under Intensive Cereal Production Systems, Bill Macleod, Vivien Vanstone, Ravjit Khangura, Ciara Beard

Bulletins 4000 -

This Bulletin describes symptoms and control methods for the most commonly encountered cereal root diseases in Western Australia:

• rhizoctonia bare patch

• root lesion nematode

• take-all

• fusarium crown rot

• cereal cyst nematode

• common root rot

• pythium root rot

Diseases caused by pathogenic micro-organisms can significantly reduce the yield of cereals. Some of these diseases are uncommon while others occur over a large area of the Western Australian wheatbelt every year. The most prevalent root diseases of cereals in Western Australia are rhizoctonia bare patch, root lesion nematode and take-all. Less widespread are fusarium crown rot, cereal cyst nematode, common root rot …

Leaf Area Index Simulation In Soybean Grown Under Near-Optimal Conditions, T. D. Setiyono, Albert Weiss, James E. Specht, Kenneth G. Cassman, A. Dobermann

Department of Agronomy and Horticulture: Faculty Publications

Different approaches have been used to simulate leaf area index (LAI) in soybean (Glycine max L. Merr). Many of these approaches require genotype-specific calibration procedures. Studies modeling LAI dynamics under optimal growth conditions with yields close to the yield potential of soybean have remained scarce. A sink-driven approach was developed and evaluated for LAI simulation in soybean under near-optimal environments. The rate of change in expanding leaf area was simulated using the first derivative of a logistic function accounting for plant population density, air temperature, and water deficit. The rate of change in senescing leaf area was also simulated …

Origins Of The Y Genome In Elymus, Pungu Okito

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Triticeae tribe DUMORTER in the grass family (Poaceae) includes the most important cereal crops such as wheat, barley, and rye. They are also economically important forage grasses. Elymus is the largest and most complex genus with approximately 150 species occurring worldwide. Asia is an important centre for the origin and diversity of perennial species in the Triticeae tribe, and more than half of the Elymus are known to occur in the Asia. Cytologically, Elymus species have a genomic formula of StH, StP, StY, StStY, StHY, StPY, and StWY. About 40% of Elymus …

Simulated Browsing Impacts On Aspen Suckers' Density, Growth, And Nutritional Responses, Koketso Tshireletso

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Heavy and repeated ungulate browsing on reproductive suckers has limited trembling aspen (Populus tremuloides Michx.) regeneration on many Western landscapes. However, little is known about the specific effects of season and intensity of browsing. My objectives were to determine the effects of season and intensity of clipping (simulated browsing) on suckers’ (1) density and growth characteristics, and (2) nutritional quality and quantity.

Three randomly selected stands were clear-felled in mid-July, 2005, and fenced. Simulated browsing treatments of 0%, 20%, 40%, and 60% removal of current year’s growth were randomly applied in early, mid-, and late summers of 2006 and …

Nitrogen Uptake, Fixation And Response To Fertilizer N In Soybeans: A Review, F. Salvagiotti, Kenneth G. Cassman, James E. Specht, Daniel T. Walters, Albert Weiss, Achim R. Dobermann

Department of Agronomy and Horticulture: Faculty Publications

Although relationships among soybean (Glycine max [L.] Merr) seed yield, nitrogen (N) uptake, biological N₂ fixation (BNF), and response to N fertilization have received considerable coverage in the scientific literature, a comprehensive summary and interpretation of these interactions with specific emphasis on high yield environments is lacking. Six hundred and thirty-seven data sets (site–year–treatment combinations) were analyzed from field studies that had examined these variables and had been published in refereed journals from 1966 to 2006. A mean linear increase of 0.013 Mg soybean seed yield per kg increase in N accumulation in above-ground biomass was evident in …

Center For Grassland Studies Newsletter, Spring 2008, Volume 14, No. 2

Center for Grassland Studies: Newsletters

Contents:

Restricted Feeding Can Improve Performance of Growing Steers Prior to Grazing on Burned Native Flint Hills Pasture by Chad Anglin, Dale Blasi, KC Olson, Chris Reinhardt, Marc Epp, Rodney Derstein, and Brian Barnhardt, Department of Animal Sciences and Industry, Kansas State University

UNL Study Reports on the Cost of Growing Switchgrass as Ethanol Feedstock by Brian Williams and Richard Perrin, Department of Agricultural Economics, UNL

Water Is Focus of Prairie Conference

Professional Golf Management Highlights

2008 Nike Golf Camp in Lincoln This July

Program for 2008 Nebraska Grazing Conference

The Nebraska Range Shortcourse

2008 Nebraska Beef Cattle Report Available …

Nebline, April 2008

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Proper Yard Waste Management
Helps Reduce Storm Water Pollution
Rental Arrangements Changing with the Times Part 2 — Flexible Cash Leases
Establishing a Commercial Vineyard
The Stately American Elm
Glossy Plant Ads
Spraying For Weeds May Also Damage Other Plants
Thank You Master Gardeners!
Planning to Plant a Tree for Arbor Day? Read This First!
Controlling Fleas
Everything Homeowners Need to Know About Termite Control
UNL Termite Researcher Needs Infested House!
Managing Deer Damage
Household Hazardous Waste Collections
Name That Food!
Country Style Potato Salad Recipe
$tretch Your Food Dollar With These 10 Money $aving $trategies
What Counts as a …

Greenhouse Roses For Cutflower Production, Aileen Reid

Bulletins 4000 -

Roses can be one of the more profitable flower crops to grow, but also one of the most difficult. Intensive, on-going management is necessary to obtain quality flowers.

The number of rose growers in Western Australia has declined. Many older growers have retired and are not being replaced by newer growers. Increasing competition from imports means that operations need to be highly efficient and it is increasingly difficult for small enterprises to survive. The high capital cost of installing and operating heating for winter production, in combination with cheaper imports from areas with warm winter climates and low labour costs …

Systems Approach Identifies An Organic Nitrogen-Responsive Gene Network That Is Regulated By The Master Clock Control Gene Cca1, Rodrigo A. Gutierrez, Trevor L. Stokes, Karen Thum, Xiaodong Xu, Mariana Obertello, Manpreet S. Katari, Milos Tanurdzic, Alexis Dean, Damion C. Nero, C Robertson Mcclung, Gloria M. Coruzzi

Dartmouth Scholarship

Understanding how nutrients affect gene expression will help us to understand the mechanisms controlling plant growth and development as a function of nutrient availability. Nitrate has been shown to serve as a signal for the control of gene expression in Arabidopsis. There is also evidence, on a gene-by-gene basis, that downstream products of nitrogen (N) assimilation such as glutamate (Glu) or glutamine (Gln) might serve as signals of organic N status that in turn regulate gene expression. To identify genome-wide responses to such organic N signals, Arabidopsis seedlings were transiently treated with ammonium nitrate in the presence or absence of …

Delineating Site-Specific Management Zones For Ph-Induced Iron Chlorosis, T. Kyaw, Richard B. Ferguson, Viacheslav I. Adamchuk, Dennis L. Mccallister, David B. Marx, D. D. Tarkalson

Department of Agronomy and Horticulture: Faculty Publications

Iron chlorosis can limit crop yield, especially on calcareous soil. Typical management for iron chlorosis includes the use of iron fertilizers or chlorosis tolerant cultivars. Calcareous and non-calcareous soil can be interspersed within fields. If chlorosisprone areas within fields can be predicted accurately, site-specific use of iron fertilizers and chlorosis-tolerant cultivars might be more profitable than uniform management. In this study, the use of vegetation indices (VI) derived from aerial imagery, on-the-go measurement of soil pH and apparent soil electrical conductivity (EC_a) were evaluated for their potential to delineate chlorosis management zones. The study was conducted at six …

Nebline, March 2008

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Eat Smart: How to Fill Up, Not Out!
Foods Which Help You Feel Full
Portion Control Tips
East Campus Walking Tour
All-America Selections for 2008
Easter Lily Care
Colony Collapse Disorder: Recent Loss of Hives a Mystery
Beginning Beekeeping 2-Day Workshop
Drain Flies
Voles
Rental Arrangements Changing with the Times Part 1 — Traditional Leases
Biosolids Improves Soil and Cuts Production Costs: Workshop March 3
Chemigation Training and Testing, March 6
Pioneer Farm Family Award Applications Due May 1
So You’re Considering an Orchard
Establishing a Commercial Vineyard
Plant Propagation: Grafting
Tiny Bites Total Big Calories!
Easy Deviled Eggs Recipe …

Proceedings Of The 35th Annual Meeting, Southern Soybean Disease Workers (March 12-13, 2008, Pensacola, Florida), Allen Wrather, Daniel H. Poston, Clayton A. Hollier, Jason Bond, Steve R. Koenning

Southern Soybean Disease Workers: Conference Proceedings

Contents

Southern United States Soybean Disease Loss Estimate for 2007. Compiled by SR Koenning

Contributed papers (Clayton Hollier, moderator)

Effects of Row Spacing and Leaf Wetness on the Temporal and Spatial Spread of Soybean Rust within Soybean Canopies. DF Narváez, JJ Marois, DL Wright, and S Isard

Effects of Potassium, Chloride, and Minor Elements Nutrition on Asian Soybean Rust. RW Schneider, EP Mumma, CL Clark, and CG Giles

The Impact of Selected Fungicide Treatments on Disease Progress of Asian Soybean Rust and Other Diseases of Soybean. GB Padgett, MA Purvis, A Hogan, and S Martin

Soybean Sudden Death Syndrome Variety …

Variation In Molybdenum Content Across Broadly Distributed Populations Of Arabidopsis Thaliana Is Controlled By A Mitochondrial Molybdenum Transporter (Mot1), Ivan Baxter, Balasubramaniam Muthukumar, Hyeong Cheol Park, Peter Buchner, Brett Lahner, John Danku, Keyan Zhao, Joohyun Lee, Malcolm J. Hawkesford, Mary Lou Guerinot, David E. Salt

Dartmouth Scholarship

Molybdenum (Mo) is an essential micronutrient for plants, serving as a cofactor for enzymes involved in nitrate assimilation, sulfite detoxification, abscisic acid biosynthesis, and purine degradation. Here we show that natural variation in shoot Mo content across 92 Arabidopsis thaliana accessions is controlled by variation in a mitochondrially localized transporter (Molybdenum Transporter 1 - MOT1) that belongs to the sulfate transporter superfamily. A deletion in the MOT1 promoter is strongly associated with low shoot Mo, occurring in seven of the accessions with the lowest shoot content of Mo. Consistent with the low Mo phenotype, MOT1 expression in low Mo accessions …

Is There A Benefit To Alfalfa Balage?, Gary Bates

Kentucky Alfalfa and Stored Forage Conference

Making hay in the mid-South has always been a difficult process. High humidity and rainfall often make drying a long, tedious, if not impossible proposition. Over the last few years there has been an increased interest in making round bale silage, or balage, from forage crops. Fermenting alfalfa for storage has several advantages and disadvantages over regular haymaking systems.

Alfalfa: Forage Crop Of The Future, Neal P. Martin, David Mertens, Ronald Hatfield, Hans Jung

Kentucky Alfalfa and Stored Forage Conference

In 2007, U.S. farmers harvested 23.6 million acres of alfalfa. Alfalfa harvested as hay and haylage produced 82.8 million tons valued at approximately $9.4 billion, ranking behind only corn and soybeans. Alfalfa hay supports dairy, beef, sheep, and horse production in the U.S. as well as a growing export market.

Crop Updates 2008 - Farming Systems, John De Majnik, Paul Meibusch, Vince Logan, Louise Barton, Wahid Biswas, Daniel Carter, Nicolyn Short, Jodie Bowling, Glen Riethmuller, James Fisher, Moin Salam, Stephen Davies, Jim Dixon, Dennis Van Gool, Alison Slade, Bob Gilkes, Megan Abrahams, Caroline Peek, Daniel Gardiner, Kari-Lee Falconer, David Hall, Jeromy Lemon, Harvey Jones, Yvette Oliver, Tania Butler, Michael Robertson, Stephen Carr, Chris Gazey, David York, Joel Andrews, Michael Simeoni, G. Peter Mangano, Svetlana Micic, Dave Gartner, Adam Clune, Matthew Morell, Adam Umbers, Angelo Loi, Brad Nutt, Clinton Revell, Geoff Kew, Vivien Vanstone, Ali Bhatti, Ming Pei You, Imma Farre, Bill Bowden, Henry Smolinski, Jane Speijers, John Bruce, David Mccarthy, Gary Lang, David Rees, Rob Grima, John Young, Ross Kingwell, Chris Oldham, Derk Bakker, Ian Foster, David Beard, Wen Chen, Richard Bell, Ross Brennan, Art Diggle, Reg Lunt, Qifu Ma, Zed Rengel, Tim Hilder, Dusty Severtson, Shahajahan Miyan, Sam Clune, Barb Sage, Tenielle Martin, Chris Newman, Neal Dalgliesh, Caroline Peak, Andrew Blake, Megan Ryan, Richard Bennett, Tim Colmer, D. Real, Jiyan Pang, Lori Kroiss, Dion Nicol, Tammy Edmonds-Tibbett, Ron Mctaggart, Sean Kelly, Helen Hunter

Crop Updates

This session covers thirty nine papers from different authors:

PLENARY

1. Developments in grain end use, Dr John de Majnik, New Grain Products, GRDC, Mr Paul Meibusch, New Farm Products and Services, GRDC, Mr Vince Logan, New Products Executive Manager, GRDC

PRESENTATIONS

2. Global warming potential of wheat production in Western Australia: A life cycle assessment, Louise Barton1, Wahid Biswas2 and Daniel Carter3, 1School of Earth & Geographical Sciences, The University of Western Australia, 2Centre of Excellence in Cleaner Production, Division of Science and Engineering, Curtin University of Technology, 3Department of Agriculture and …

Crop Updates 2008 - Cereals, Christine M. Zaicou-Kunesch, Shahajahan Miyan, Brenda Shackley, Steve Penny, Sarah Ellis, Darshan Sharma, Blakely Paynter, Jeff Russell, Andrea Hills, Glen Riethmuller, Bill Bowden, Paul Blackwell, Harmohinder Dhammu, Vince Lambert, Chris Roberts, David Cox, Sally Cox, Jeremy Lemon, Paul Damon, Zed Rengel, Geoff J. Thomas, Ciara Beard, Anne Smith, Kithsiri Jayasena, Sean Kelly, Rob Loughman, Bill Macleod, Raj Malik, Ravjit Khangura, Vivien Vanstone, Colin Hanbury, Mehreteab Aberra, Gordon Masnish, Brenda A. Coutts, Geoff Strickland, Monica Kehoe, Dustin Severtson, Roger A C Jones, Dominie Wright, Megan Jordan, Xinhua He, Eli Manyol, Song-Ai Nio, Imran Malik, Tina Botwright-Acuña, Len Wade, Nigel Metz, Linda Price, Dean A. Diepeveen, Leisa Armstrong, Peter Clarke, Doug Abrecht, Rudi Appels, Matthew Bellgard

Crop Updates

This session covers twenty four papers from different authors:

WHEAT AGRONOMY

1. Wheat variety performance in the Northern Agricultural Region in 2007, Christine Zaicou, Department of Agriculture and Food

2. Wheat variety performance on the Central Agricultural Region in 2007, Shahajahan Miyan, Department of Agriculture and Food

3. Response of wheat varieties to sowing time in the Great Southern and Lakes Region in 2007, Brenda Shackley and Steve Penny, Department of Agriculture and Food

4. Wheat variety performance in the South Coastal Region in 2007, Sarah Ellis, Department of Agriculture and Food

5. Flowering dates of wheat varieties in Western …

Nebline, February 2008

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Take Steps to Help Protect Your Property from Theft
Census of Agriculture FAQ’s
Forage Calendar
Computerized Farm Financial Recordkeeping Workshop, Feb. 16
Private Pesticide Applicator Trainings
Environmental Reasons Why Fruit Trees Fail to Bear
Establishing a Vineyard
Renovate Windbreaks to Improve Effectiveness
$tretch Your Food Dollar with Soup
Quick Chili Recipe
Almost Homemade Chicken Rice Soup Recipe
Find It Fast: Filing Food Appliance and Other Kitchen Gear Instruction Manuals
See “Red” on Valentine’s Day
Presidents’ Notes—Bonnie’s Bits
Household Hints: Keeping Comforters Clean and Cozy
FCE News & Events
Elderly Can Reap Computer Benefits
America Saves Week
Elderly Can Reap Computer …

Expression And Evolutionary Relationships Of The Chenopodium Quinoa 11s Seed Storage Protein Gene, Mikel Stevens, Peter J. Maughan, Daniel J. Fairbanks, Marie R. B. Balzotti, Jennifer N. Thornton, David A. Mcclellan, Eric N. Jellen, Craig E. Coleman

Faculty Publications

Quinoa (Chenopodium quinoa Willd.) is a food crop cultivated by subsistence farmers and commercial growers on the high Andean plateau, primarily in Bolivia, Peru, and Chile. Present interest in quinoa is due to its tolerance of harsh environments and its nutritional value. It is thought that the seed storage proteins of quinoa, particularly the 11S globulins and 2S albumins, are responsible for the relatively high protein content and ideal amino acid balance of the quinoa seed. Here we report the genomic and cDNA sequences for two 11S genes representing two orthologous loci from the quinoa genome. Important features of the …

Decomposition Of Bt And Non-Bt Corn Hybrid Residues In The Field, David D. Tarkalson, Stephen D. Kachman, Johannes M. H. Knops, Janice E. Thies, Charles S. Wortmann

Department of Agronomy and Horticulture: Faculty Publications

Results of a previous laboratory study indicated that six transgenic crops expressing the Cry1Ab insecticidal protein from Bacillus thuringiensis (Bt) decomposed at a slower rate than their respective non-Bt isolines. Consequently, litter decomposition rates, nitrogen cycling, and carbon pools may change in agricultural systems as the result of the widespread use of Bt crops. In this study, we assessed the decomposition rates and chemical composition of commonly grown hybrids of Bt and non-Bt isolines of corn (Zea mays L.) in the field. Leaves, stalks, and cobs from two Bt corn hybrids (Pioneer 34N44 Bt and NC+ 4990 Bt) and their …