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2002 Grape Cultivar Trial Performance In 2009, Paul A. Domoto, Gail R. Nonnecke, Dennis N. Portz, Leah B. Riesselman, Bernard J. Havlovic, Nicholas P. Howell 2010 Iowa State University

2002 Grape Cultivar Trial Performance In 2009, Paul A. Domoto, Gail R. Nonnecke, Dennis N. Portz, Leah B. Riesselman, Bernard J. Havlovic, Nicholas P. Howell

Iowa State Research Farm Progress Reports

To identify grape cultivars adapted to Iowa, a cultivar by management system trial was established in 2002 at the Iowa State University (ISU) Horticulture Research Station (HRS) and the ISU Armstrong Research Farm (ARF) with a grant from the Leopold Center of Sustainable Agriculture. Fifteen cultivars, including ten wine and five seedless table cultivars, were being evaluated under three management systems that were discontinued in 2008. This report summarizes the cultivar performance for the 2009 growing season.


Effectiveness Of Foliar Fungicides By Timing On Hybrid Corn In Iowa, Alison E. Robertson, John M. Shriver, Jeff Butler 2010 Iowa State University

Effectiveness Of Foliar Fungicides By Timing On Hybrid Corn In Iowa, Alison E. Robertson, John M. Shriver, Jeff Butler

Iowa State Research Farm Progress Reports

Fungicide use on hybrid corn has increased considerably in the past three growing seasons primarily due to reports of higher yields, even in the absence of disease and higher corn prices. A number of fungicides are registered for use on corn. The objectives of this project were to 1) compare the efficacy of various products for management of foliar corn diseases, 2) assess the effect of timing of application of fungicides on foliar disease development, and 3) evaluate the yield response of hybrid corn to foliar fungicide application.


Effects Of Tillage On Microbial Populations Associated To Soil Aggregation In Dryland Spring Wheat System, Andrew W. Lenssen, TheCan Caesar-TonThat, Anthony J. Caesar, Upendra M. Sainju, John F. Gaskin 2010 United States Department of Agriculture

Effects Of Tillage On Microbial Populations Associated To Soil Aggregation In Dryland Spring Wheat System, Andrew W. Lenssen, Thecan Caesar-Tonthat, Anthony J. Caesar, Upendra M. Sainju, John F. Gaskin

Andrew W. Lenssen

Tillage may influence the microbial populations involved in soil aggregation.We evaluated the effects of no till (NT) and conventional tillage (CT, tillage depth about 7 cm) continuous spring wheat system on culturable heterotrophic bacterial communities predominant in microaggregates (0.25e0.05 mm) and on soil-aggregating basidiomycete fungi in aggregate-size classes (4.75e2.00, 2.00e0.25, and 0.25e0.05 mm) at 0e20 cm depth of a Williams loam (fine-loamy, mixed, Typic Argiustolls) in dryland Montana, USA. Enzyme-linked immunosorbent assay used to quantify antigenic response to basidiomycete cellwalls,was higher in NT than in CT in 4.75e2.00 ...


Market Impact Of Domestic Offset Programs, Tristan R. Brown, Amani E. Elobeid, Jerome R. F. Dumortier, Dermot J. Hayes 2010 Iowa State University

Market Impact Of Domestic Offset Programs, Tristan R. Brown, Amani E. Elobeid, Jerome R. F. Dumortier, Dermot J. Hayes

CARD Working Papers

Three recent reports have estimated the market impacts of domestic offset programs, including afforestation, contained in the American Clean Energy and Security Act (ACES). The magnitude of these estimated impacts motivates this study. We show that with carbon prices as low as $30 per metric ton, a significant number of U.S. crop acres would be used to grow trees and this would cause price increases for some U.S. commodities. Although we present only one carbon price scenario, the modeling approach that we use suggests that the acreage and price impacts we describe here would increase at higher carbon ...


The Production And Price Impact Of Biotech Crops, Graham Brookes, Tun-Hsiang (Edward) Yu, Simla Tokgoz, Amani E. Elobeid 2010 PG Economics

The Production And Price Impact Of Biotech Crops, Graham Brookes, Tun-Hsiang (Edward) Yu, Simla Tokgoz, Amani E. Elobeid

CARD Working Papers

Biotech crops have now been grown commercially on a substantial global scale since 1996. This paper examines the production effects of the technology and impacts on cereal and oilseed markets through the use of agricultural commodity models. It analyses the impacts on global production, consumption, trade and prices in the soybean, canola and corn sectors. The analysis suggests that world prices of corn, soybeans and canola would probably be, respectively, 5.8%, 9.6% and 3.8% higher, on average, than 2007 baseline levels if this technology was no longer available to farmers. Prices of key derivatives of soybeans (meal ...


Tillage System And Fertilizer Placement Methods For Corn And Soybean Production, Antonio P. Mallarino, Ryan Rusk 2010 Iowa State University

Tillage System And Fertilizer Placement Methods For Corn And Soybean Production, Antonio P. Mallarino, Ryan Rusk

Iowa State Research Farm Progress Reports

No-till management results in little or no incorporation of crop residues and fertilizer with soil. Subsurface banding phosphorus (P) and potassium (K) fertilizers with planter attachments or before planting could be more effective than broadcast fertilization because both nutrients accumulate at or near the soil surface. A long-term study was initiated in 1994 to evaluate P and K fertilizer placement for corn and soybean managed with no-till and chisel-plow tillage.


Weed Management In Corn, Michael D. Owen, James F. Lux, Damian D. Franzenburg, Dean M. Grossnickle 2010 Iowa State University

Weed Management In Corn, Michael D. Owen, James F. Lux, Damian D. Franzenburg, Dean M. Grossnickle

Iowa State Research Farm Progress Reports

The purpose of this study was to evaluate various two-pass and one-pass herbicide application timings in corn for crop injury and weed control.


Long-Term Tillage And Crop Rotation Effect On Yield And Soil Carbon, Mahdi Al-Kaisi 2010 Iowa State University

Long-Term Tillage And Crop Rotation Effect On Yield And Soil Carbon, Mahdi Al-Kaisi

Iowa State Research Farm Progress Reports

Tillage system and crop rotation have a major long-term effect on soil productivity and soil quality components such as soil carbon and other soil physical, biological, and chemical properties. In addition, both tillage and crop rotation affect weed and soil disease control. There is a need for well-defined, long-term tillage and crop rotation studies across the different soils and climate conditions in the state. The objective of this study is to evaluate the long-term effects of different tillage systems and crop rotations on corn and soybean yields and soil quality.


Muskmelon Cultivar Trial, Vincent Lawson 2010 Iowa State University

Muskmelon Cultivar Trial, Vincent Lawson

Iowa State Research Farm Progress Reports

The 2009 melon trial evaluated eleven muskmelon and three specialty cultivars to determine their relative maturity, yield, and fruit characteristics when grown under Iowa conditions. To better evaluate the cultivars, they were trialed at two locations providing different soil types and growing environments.


Update On Turfgrass Research, Christopher Blume, Nick E. Christians 2010 Iowa State University

Update On Turfgrass Research, Christopher Blume, Nick E. Christians

Iowa State Research Farm Progress Reports

The 2009 season was a challenging, but dynamic, one. The number of projects was down slightly because of the economy, including the elimination of all but one of the NTEP (National Turfgrass Evaluation Program) trials. However, this allowed for improvements and changes of many sections of the research area. There was approximately 70,000 ft2 of newly seeded areas for future research projects, which included many species and varieties. The species were tall fescue (30,000 ft2 ), creeping bentgrass (8,000 ft2 ), perennial ryegrass (11,000 ft2 ), fine-leaf fescue (8,000ft2 ), and Kentucky bluegrass (13 ...


Turfgrass Fertilizer Trial, Shane R. Brockhoff, Nick E. Christians 2010 Iowa State University

Turfgrass Fertilizer Trial, Shane R. Brockhoff, Nick E. Christians

Iowa State Research Farm Progress Reports

A fertilizer trial for Ajinomoto USA, Inc. was conducted during the summer-fall months of 2009. The purpose of the study was to analyze the effects of several fertilizers compared with urea and an untreated control. Data collected included weekly visual quality ratings, weekly clipping mass, and analysis of total nitrogen percentage in leaves. Total nitrogen percentage data were determined from combined weekly clippings four times during the study.


Development And Implementation Of Low-Input Delivery Systems For Ethanol Co-Products In Forage-Based Beef Systems, Daniel D. Loy, Joe Sellers 2010 Iowa State University

Development And Implementation Of Low-Input Delivery Systems For Ethanol Co-Products In Forage-Based Beef Systems, Daniel D. Loy, Joe Sellers

Leopold Center Completed Grant Reports

Increased corn production to fuel Iowa's ethanol plants leads to diversion of cattle pasture land to cropland. This project looked at the value of using distillers' grain (an ethanol by-product) as a supplement for beef cattle feeding in a forage system.


A Resource Guide To Cultivate The Linn County Local Food System, Linn/Johnson Local Food Task Force 2010 Iowa State University

A Resource Guide To Cultivate The Linn County Local Food System, Linn/Johnson Local Food Task Force

Leopold Center Pubs and Papers

This guide to local foods in Linn County was funded by the Regional Food Systems Working Group.


Nitrogen Fertilization Of Corn Grown With A Cover Crop, John E. Sawyer, Jose L. Pantoja, Daniel W. Barker 2010 Iowa State University

Nitrogen Fertilization Of Corn Grown With A Cover Crop, John E. Sawyer, Jose L. Pantoja, Daniel W. Barker

Iowa State Research Farm Progress Reports

Objectives of this project were to study corn nitrogen (N) fertilization requirement and corn-soybean yield response when grown in a cover crop system. Multiple rates of N fertilizer are applied, with measurement of corn yield response to applied N and soybean yield with and without a fall planted winter rye cover crop. The study is being conducted at several research farms, with the intent for study across multiple years to allow comparison of with and without a cover crop system across varying soil and climatic conditions.


2009 Home Demonstration Gardens, Paul A. Domoto, Gail R. Nonnecke, Joseph M. Hannan, Dennis N. Portz, Leah B. Riesselman, Bernard J. Havlovic, Nicholas P. Howell, Kenneth T. Pecinovsky, Kevin Van Dee 2010 Iowa State University

2009 Home Demonstration Gardens, Paul A. Domoto, Gail R. Nonnecke, Joseph M. Hannan, Dennis N. Portz, Leah B. Riesselman, Bernard J. Havlovic, Nicholas P. Howell, Kenneth T. Pecinovsky, Kevin Van Dee

Iowa State Research Farm Progress Reports

To assess the regional adaptation of wine grape cultivars in Iowa, a trial was established in 2003 through an Iowa Department of Agriculture and Land Stewardship (IDALS) specialty crops grant awarded to the Iowa Wine Growers Association (IWGA). The trial was designed to evaluate up to 20 cultivars or advanced selections at four Iowa State University (ISU) farms representing different geographic, climatic, and soil conditions: Horticulture Research Station (HRS), Ames; the Armstrong Research Farm (ARF), Lewis; the Southeast Research Farm (SERF), Crawfordsville; and the Northeast Research Farm (NERF), Nashua. The SERF and NERF plantings also included the 15 cultivars being ...


Modified Oil Soybean Test—North, Kevin O. Scholbrock 2010 Iowa State University

Modified Oil Soybean Test—North, Kevin O. Scholbrock

Iowa State Research Farm Progress Reports

The purpose of this test was to evaluate the experimental modified oil soybean lines adapted to northern Iowa. The 2009 Modified Oil Soybean Test included 1% linolenic and low saturates, and for comparison of agronomic traits, commercially grown varieties released by Iowa State University. Oil from 1% linolenic and low saturates soybean varieties grown in Iowa is used in the frying oil market. This oil is healthier for the consumer.


Weed Management Programs In Soybean, Michael D. Owen, James F. Lux, Damian D. Franzenburg, Dean M. Grossnickle 2010 Iowa State University

Weed Management Programs In Soybean, Michael D. Owen, James F. Lux, Damian D. Franzenburg, Dean M. Grossnickle

Iowa State Research Farm Progress Reports

The purpose of this study was to evaluate various two- and one-pass herbicide application timings in soybean for crop injury and weed control.


Efficacy Results Of Fungicides On Soybean White Mold Control, Shrishail S. Navi, Xiao-Bing Yang, Kenneth T. Pecinovsky 2010 Iowa State University

Efficacy Results Of Fungicides On Soybean White Mold Control, Shrishail S. Navi, Xiao-Bing Yang, Kenneth T. Pecinovsky

Iowa State Research Farm Progress Reports

Soybean white mold has been a production problem for soybean producers since the early 1990s. Iowa’s cool, wet summer has increased the white mold risk for some growers in Iowa. Sclerotia (in the soil) germinate and produce apothecia, and apothecia produce ascospores. These spores attack soybean plants at flowering. Therefore, treatment to protect soybean has to be made before or during the flowering period, depending on chemicals used.


Weather And Growing Season Summary, Mark A. Licht 2010 Iowa State University

Weather And Growing Season Summary, Mark A. Licht

Iowa State Research Farm Progress Reports

The 2009 growing season resulted in mean monthly temperatures that varied from -8o F to +7o F from the 30-year average (Table 1). This year there were a total of four days above 90o F, down from 10 days in 2007 and up from 2 in 2008. Overall, 2009 was a cooler year than normal. In western Iowa, this growing season will be remembered for the combination of cooler and wetter weather conditions during the growing season.


2009 Home Demonstration Gardens, Cynthia L. Haynes 2010 Iowa State University

2009 Home Demonstration Gardens, Cynthia L. Haynes

Iowa State Research Farm Progress Reports

Vegetable gardening is increasingly popular in today’s economy, especially since there is the potential to save money by growing food at home. One of the themes for the 2009 Home Demonstration Garden was vegetables that have the potential to reduce grocery bills. Certain vegetables such as potatoes, winter squash, onions, tomatoes, beans, and beets can be stored or processed, allowing them to be kept long after harvest. Other themes featured in the 2009 Home Demonstration Garden were white pumpkins, annual grasses, and new or unusual flowers.


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