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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.


All-America Selections® Vegetable Trial, Vincent Lawson, Joseph M. Hannan 2010 Iowa State University

All-America Selections® Vegetable Trial, Vincent Lawson, Joseph M. Hannan

Iowa State Research Farm Progress Reports

All-America Selections® (AAS) is an independent, non-profit organization established in 1932 by industry leaders to organize and oversee unbiased evaluations of new, soon to be released, flower and vegetable varieties. The goal of the AAS is to identify truly improved home garden varieties through a national network of trial grounds and then promote these proven winners as All-America Selections ® .


Crop And Soil Responses To Rates Of Lime, Stanley Henning 2010 Iowa State University

Crop And Soil Responses To Rates Of Lime, Stanley Henning

Iowa State Research Farm Progress Reports

Grain producers in northeast Iowa are interested in the effects of liming rates on crops and soils. Currently, it is recommended that a corn-soybean rotation requires a soil pH of 6.5. This experiment was designed to determine the effects of liming rate on soil pH and a corn-soybean rotation that is under-, adequately, and over-limed according to this recommendation.


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.


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.


Cattle Temporal And Spatial Distribution In Midwestern Pastures Using Global Positioning (Three-Year Progress Report), Douglas A. Bear, James R. Russell, Daniel G. Morrical 2010 Iowa State University

Cattle Temporal And Spatial Distribution In Midwestern Pastures Using Global Positioning (Three-Year Progress Report), Douglas A. Bear, James R. Russell, Daniel G. Morrical

Iowa State Research Farm Progress Reports

Previous research has shown that grazing cattle tend to congregate in streamside zones of pastures to obtain water and shade for thermoregulation. However, problems associated with thermoregulation may be increased because of the presence of endophyte-infected tall fescue in pastures. Defining relationships between cattle distribution, such pasture characteristics as size, shape, shade distribution, botanical composition, and climatic factors related to heat stress, will provide the basis for the development and implementation of management practices that minimize nonpoint source pollution possibly associated with grazing cattle.


Effects Of Stocking Rate, Botanical Composition, And Stream Bank Erosion On The Physical Characteristics Of The Streamside Zones Of Pastures (Three-Year Progress Report), Douglas Allen Bear, James R. Russell, Daniel G. Morrical, Mustafa Tufekcioglu, Thomas M. Isenhart, John L. Kovar 2010 Iowa State University

Effects Of Stocking Rate, Botanical Composition, And Stream Bank Erosion On The Physical Characteristics Of The Streamside Zones Of Pastures (Three-Year Progress Report), Douglas Allen Bear, James R. Russell, Daniel G. Morrical, Mustafa Tufekcioglu, Thomas M. Isenhart, John L. Kovar

Iowa State Research Farm Progress Reports

Grazing management practices that allow cattle to congregate near pasture streams may result in the loss of vegetative cover and promote accumulation of manure near the streams, increasing the risk of nonpoint source pollution of the stream


Sugar Beet Demonstration Plantings, Vincent Lawson 2010 Iowa State University

Sugar Beet Demonstration Plantings, Vincent Lawson

Iowa State Research Farm Progress Reports

This project investigated field production of a potential biofuel crop–sugar beet. Objectives included becoming familiar with cultural methods for growing sugar beet and determining expected yield levels for southeast Iowa. To accomplish this, half-acre trial plots were planted at the Muscatine Island Research Farm (MIRF), Fruitland and at the Southeast Research Farm (SERF), Crawfordsville, in 2008 and 2009. The two sites provided different soil types and growing environments to investigate the crop. Results from both years and locations demonstrate that sugar beets can be grown in southeast Iowa, and with good management and weather conditions, yields should equal or ...


Evaluation Of Soybean Varieties In The Northern Uniform Soybean Test, Sylvia R. Cianzio, Peter Lundeen, Kyle Vander Molen, Gregory D. Gebhart 2010 Iowa State University

Evaluation Of Soybean Varieties In The Northern Uniform Soybean Test, Sylvia R. Cianzio, Peter Lundeen, Kyle Vander Molen, Gregory D. Gebhart

Iowa State Research Farm Progress Reports

The Northern Uniform Soybean Test is used to evaluate soybean varieties produced by several public breeding programs in the Northern portion of the United States and Canada. In 2009, five public breeding programs participated in the Northern Uniform Soybean Test (Maturity Group I). Public breeders are allowed to enter varieties in the Uniform Test in exchange for growing locations for the test. Material entered in the Uniform Test is generally from advanced stages of a breeding program. The Uniform Soybean Test is an efficient method for soybean breeders to get multiple location data in comparison to each individual program growing ...


Miscanthus Establishment And Survival, Nicholas N. Boersma, Emily A. Heaton 2010 Iowa State University

Miscanthus Establishment And Survival, Nicholas N. Boersma, Emily A. Heaton

Iowa State Research Farm Progress Reports

Rising costs of petroleum fuels and increased awareness of the adverse effects of greenhouse gases have spurred interest in renewable fuels and other ‘green’ products. Recent legislation has set goals of approximately 20 billion gallons of renewable fuel produced from non-corn starch sources by the year 2022. These driving forces have increased interest in dedicated bioenergy crops. Among perennial grasses, which have received an exceptional amount of attention as dedicated energy crops, one stands out: Miscanthus (Miscanthus × giganteus).


2003 Nc-140 Dwarf Apple Rootstock Trial Performance In 2009, Paul A. Domoto, Lynn R. Schroeder 2010 Iowa State University

2003 Nc-140 Dwarf Apple Rootstock Trial Performance In 2009, Paul A. Domoto, Lynn R. Schroeder

Iowa State Research Farm Progress Reports

To evaluate the adaptability and performance of new and promising apple rootstocks in the dwarfing size-control category, a NC-140 regional rootstock trial was established in 2003 at 14 sites in the United States (AR, CA, IA, GA, KY, ME, MI, NY, OH, PA, UT, WI), Canada (BC), and Mexico. The Iowa planting, located at the ISU Horticulture Research Station, includes 23 rootstocks with new selections from the Cornell-Geneva breeding program (G, CG.), Russia (B.), Czech Republic (J-TE), Japan (JM.), and Germany (PiAu) with M.26, M.9 Pajam 2, and M.9 T337 serving as industry standards. These rootstocks are ...


Evaluation Of Organic Corn Varieties, Kathleen Delate, Vivian Bernau, Kevin Van Dee 2010 Iowa State University

Evaluation Of Organic Corn Varieties, Kathleen Delate, Vivian Bernau, Kevin Van Dee

Iowa State Research Farm Progress Reports

According to the USDA National Organic Program, certified organic farmers must source organic seed (seed from organically raised crops). The organic seed industry is currently growing in Iowa and the Midwest. With this growth, organic growers are looking for university-based recommendations on organic varieties to use in Iowa. The Organic Agriculture Program at Iowa State University has been using organic seed at the Southeast Research Farm for ten years with excellent results. There were four varieties selected for the 2009 organic corn variety trial. These included the following Blue River (Kelley, IA) 109 to 112–day maturity hybrid corn varieties ...


Time Of Harvest And Wine Quality Of Esprit Wine Grapes, Brandon H. Carpenter, Randall J. Vos, Gail R. Nonnecke, Sebastian Donnor 2010 Iowa State University

Time Of Harvest And Wine Quality Of Esprit Wine Grapes, Brandon H. Carpenter, Randall J. Vos, Gail R. Nonnecke, Sebastian Donnor

Iowa State Research Farm Progress Reports

Currently there is little to no information regarding when to harvest many of the coldhardy hybrid grape cultivars. There are contrasting opinions of the quality of the wine made from some of these cultivars, which may in part be due to a difference in timing of harvest. Many of the cold hardy cultivars contain Vitis labrusca in their parentage that can lead to differing levels of ‘foxy’ flavors depending on when the fruit is harvested. Wineries may prefer different levels of the typical V. labrusca flavors in their wines. Many of the cold-hardy cultivars also tend to have high titratable ...


How Does Dew Affect L–Band Backscatter? Analysis Of Pals Data At The Iowa Validation Site And Implications For Smap, Brian K. Hornbuckle, Tracy L. Rowlandson, Eric S. Russell, Amy L. Kaleita, Sally D. Logsdon, Anton Kruger, Simon Yueh, Roger De Roo 2010 Iowa State University

How Does Dew Affect L–Band Backscatter? Analysis Of Pals Data At The Iowa Validation Site And Implications For Smap, Brian K. Hornbuckle, Tracy L. Rowlandson, Eric S. Russell, Amy L. Kaleita, Sally D. Logsdon, Anton Kruger, Simon Yueh, Roger De Roo

Agronomy Conference Proceedings and Presentations

NASA's Soil Moisture Active Passive satellite mission will use both an L-band radiometer and radar to produce global-scale measurements of soil moisture. L-band backscatter is also sensitive to the water content of vegetation. We found that a moderate dew increased the L-band backscatter of a soybean canopy by 1 dB. Dew thus has the potential to add error to satellite observations of soil moisture.


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.


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 ...


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.


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.


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.


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