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2006

Iowa State University

Agricultural Science

Series

Iowa State Research Farm Progress Reports

Horticulture

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Evaluation Of Previous Rotation On Flax Performance In Certified Organic Production - Crawfordsville Trial, 2005, Kathleen Delate, Andrea Mckern, Daniel Rosmann, Kevin Van Dee Jan 2006

Evaluation Of Previous Rotation On Flax Performance In Certified Organic Production - Crawfordsville Trial, 2005, Kathleen Delate, Andrea Mckern, Daniel Rosmann, Kevin Van Dee

Iowa State Research Farm Progress Reports

Flax (Linum usitatissimum [Linaceae] – linen family) is an ancient crop that had been grown in Iowa for many years, but it has been displaced by the emphasis on commodity corn and soybeans. Flax has many uses, including industrial oils from oilseed flax; food-quality flaxseed oil; and linen products, fiberboard and paper products from the straw. Flaxseed oil is high in omega-3 fatty acids, which are associated with lowered risk of heart disease and lowered blood cholesterol levels. Flax has a 50-day vegetative period, a 25-day flowering period, and a 35-day period to maturity. Seeds are produced in bolls that contain ...


Stark Northern Prize—A Hardy Persian Walnut, Paul A. Domoto Jan 2006

Stark Northern Prize—A Hardy Persian Walnut, Paul A. Domoto

Iowa State Research Farm Progress Reports

Stark Brothers Nursery, Louisiana, Missouri, has released for sale a new walnut cultivar named Stark Northern Prize™. This tree is a cold-resistant Persian (Carpathian) walnut, Juglans regia. It was selected from a population of open-pollinated seedlings planted at the Iowa State University Horticulture Station, Ames, Iowa, in 1971 and was evaluated as ISU71-E18. In 2002, the U.S. plant patent was received for the walnut tree named Domoto. In 2005, pairs of ISU Domoto, aka Stark Northern Prize™, walnut trees were planted at the ISU research farms near Sutherland, Kanawha, Nashua, Lewis, Chariton, and Crawfordsville and at the Horticulture Station ...


2005 Home Demonstration Gardens, Cynthia L. Haynes Jan 2006

2005 Home Demonstration Gardens, Cynthia L. Haynes

Iowa State Research Farm Progress Reports

No abstract provided.


Removal Of Creeping Bentgrass From Kentucky Bluegrass With Mesotrione, Marcus Jones, Nick E. Christians Jan 2006

Removal Of Creeping Bentgrass From Kentucky Bluegrass With Mesotrione, Marcus Jones, Nick E. Christians

Iowa State Research Farm Progress Reports

Creeping bentgrass (Agrostis stolonifera L.) creates a dense, high-quality playing surface on golf courses, but often encroaches adjacent areas of Kentucky bluegrass (Poa pratensis L.). Callisto, a herbicide produced and marketed by Syngenta containing the active ingredient mesotrione, provides preemergence and postemergence control of broadleaf and annual grassy weeds. Preliminary field trials show that mesotrione kills creeping bentgrass, but more information is needed regarding the application protocol. Research was conducted to determine: 1) what rates of mesotrione are best for removing creeping bentgrass from Kentucky bluegrass, and 2) what mesotrione rates are safe for Kentucky bluegrass.


Evaluation Of Varieties, Fertility Treatments, And Red Clover Underseeding For Certified Organic Flax Production - Neely-Kinyon Trial, 2005, Kathleen Delate, Andrea Mckern, Daniel Rosmann, Robert Burcham, John Kennicker Jan 2006

Evaluation Of Varieties, Fertility Treatments, And Red Clover Underseeding For Certified Organic Flax Production - Neely-Kinyon Trial, 2005, Kathleen Delate, Andrea Mckern, Daniel Rosmann, Robert Burcham, John Kennicker

Iowa State Research Farm Progress Reports

Flax (Linum usitatissimum [Linaceae]—linen family) is an ancient crop that had been grown in Iowa for many years, but was displaced by the emphasis on commodity corn and soybeans. Flax has many uses, including industrial oils from oilseed flax, food-quality flaxseed oil, linen products, fiberboard, and paper products from the straw. Flaxseed oil is high in omega-3 fatty acids, which are associated with lowered risk of heart disease and lowered blood cholesterol levels. Flax has a 50-day vegetative period, a 25-day flowering period, and a 35-day period to maturity. Seeds are produced in bolls that contain 6–10 seeds ...


Stark Northern Prize—A Hardy Persian Walnut, Paul A. Domoto Jan 2006

Stark Northern Prize—A Hardy Persian Walnut, Paul A. Domoto

Iowa State Research Farm Progress Reports

Stark Brothers Nursery, Louisiana, Missouri, has released for sale a new walnut cultivar named Stark Northern Prize™. This tree is a cold-resistant Persian (Carpathian) walnut, Juglans regia. It was selected from a population of open-pollinated seedlings planted at the Iowa State University Horticulture Station, Ames, Iowa, in 1971 and was evaluated as ISU71-E18. In 2002, the U.S. plant patent was received for the walnut tree named Domoto. In 2005, pairs of ISU Domoto, aka Stark Northern Prize™, walnut trees were planted at the ISU research farms near Sutherland, Kanawha, Nashua, Lewis, Chariton, and Crawfordsville and at the Horticulture Station ...


Influence Of Cover Crop Rotation And Conventional Management Practices On Strawberry Plant Growth And Weed Growth, Dennis N. Portz, Gail R. Nonnecke Jan 2006

Influence Of Cover Crop Rotation And Conventional Management Practices On Strawberry Plant Growth And Weed Growth, Dennis N. Portz, Gail R. Nonnecke

Iowa State Research Farm Progress Reports

The traditional cover crops, perennial ryegrass (Lolium perenne L.) and sorghum sudangrass (Sorghum bicolor L. Moench), are used in rotation with strawberry (Fragaria × ananassa Duch.) in the Midwest to improve soil quality and suppress pests. Use of cover crops in rotation with strawberry may provide an alternative to chemical pesticides and may maintain or improve soil quality. The objective of this study was to investigate how cover crops affect weed and nematode populations as well as the physical and chemical properties of soil when used in rotation with strawberry.


Stark Northern Prize—A Hardy Persian Walnut, Paul A. Domoto Jan 2006

Stark Northern Prize—A Hardy Persian Walnut, Paul A. Domoto

Iowa State Research Farm Progress Reports

Stark Brothers Nursery, Louisiana, Missouri, has released for sale a new walnut cultivar named Stark Northern Prize™. This tree is a cold-resistant Persian (Carpathian) walnut, Juglans regia. It was selected from a population of open-pollinated seedlings planted at the Iowa State University Horticulture Station, Ames, Iowa, in 1971 and was evaluated as ISU71-E18. In 2002, the U.S. plant patent was received for the walnut tree named Domoto. In 2005, pairs of ISU Domoto, aka Stark Northern Prize™, walnut trees were planted at the ISU research farms near Sutherland, Kanawha, Nashua, Lewis, Chariton, and Crawfordsville and at the Horticulture Station ...


2005 Home Demonstration Gardens, Cynthia L. Haynes Jan 2006

2005 Home Demonstration Gardens, Cynthia L. Haynes

Iowa State Research Farm Progress Reports

Home demonstration gardens were located at nine sites across the state. The objective of the garden was to grow diverse plants in order to display and compare a wide variety of vegetables and flowers. The 2005 garden included a continental garden,summer squash, marigolds, basil, and black-eyed Susans. The continental garden included domesticated plants from four continental areas: Asia, Europe, Africa, and the Americas.


Stark Northern Prize—A Hardy Persian Walnut, Paul A. Domoto Jan 2006

Stark Northern Prize—A Hardy Persian Walnut, Paul A. Domoto

Iowa State Research Farm Progress Reports

Stark Brothers Nursery, Louisiana, Missouri, has released for sale a new walnut cultivar named Stark Northern Prize™. This tree is a cold-resistant Persian (Carpathian) walnut, Juglans regia. It was selected from a population of open-pollinated seedlings planted at the Iowa State University Horticulture Station, Ames, Iowa, in 1971 and was evaluated asISU71-E18. In 2002, the U.S. plant patent was received for the walnut tree named Domoto. In 2005, pairs of ISU Domoto, aka Stark Northern Prize™, walnut trees were planted at the ISU research farms near Sutherland, Kanawha, Nashua, Lewis, Chariton, and Crawfordsville and at the Horticulture Station north ...


Effects Of Four Weed Management Systems On Soil Quality In Junebearing Strawberry Production, Craig A. Dilley, Gail R. Nonnecke Jan 2006

Effects Of Four Weed Management Systems On Soil Quality In Junebearing Strawberry Production, Craig A. Dilley, Gail R. Nonnecke

Iowa State Research Farm Progress Reports

Few herbicides are registered for use in Junebearing matted-row strawberry culture. This study was conducted to develop alternative methods of weed management that are both economically and environmentally sustainable. The experiment evaluated the effects of two alternative and two conventional weed management systems on soil quality in Junebearing matted-row strawberry production. A soil quality index, based on chemical, physical, and biological properties of soil, was developed to help growers improve crop profitability and soil conservation.


Influence Of Cover Crop Rotation And Conventional Practices On Grapevine Plant Growth And Weed Growth, Dennis N. Portz, Gail R. Nonnecke Jan 2006

Influence Of Cover Crop Rotation And Conventional Practices On Grapevine Plant Growth And Weed Growth, Dennis N. Portz, Gail R. Nonnecke

Iowa State Research Farm Progress Reports

Cover crops are used in rotation with cropping systems to improve soil quality and to suppress pests. Use of cover crops prior to replanting on sites with grape may provide a sustainable alternative to chemical pesticides and may maintain or improve soil quality. The objectives of this study were to investigate how cover crops affect weed and nematode populations and soil physical and chemical properties when used on replant sites with Vitis spp. (grape).


Iowa Planting Of The 2003 Nc-140 Dwarf Apple Rootstock Trial, Paul A. Domoto Jan 2006

Iowa Planting Of The 2003 Nc-140 Dwarf Apple Rootstock Trial, Paul A. Domoto

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 15 sites in the United States (AR, CA, IA, GA, KY, ME, MI, NY, OH, PA, UT, VA, WI), Canada (BC), and Mexico. The Iowa planting, located at the ISU Horticulture Station, includes 23 rootstocks (CG.3041, CG5935, CG.6210, JTE-G, J-TE-H, JM.1, JM.2, JM.7, JM.8, PiAu 51-11, PiAu 51-4, PiAu 56-83, Bud.62-396, B.9, M.9 Pajam 2, M.26 EMLA, M.9 T337, G.16, JM ...


Influence Of Corn Gluten Meal Rate And Cultivar On Day-Neutral Strawberry Production, Gail R. Nonnecke, Nick E. Christians, László Radics Jan 2006

Influence Of Corn Gluten Meal Rate And Cultivar On Day-Neutral Strawberry Production, Gail R. Nonnecke, Nick E. Christians, László Radics

Iowa State Research Farm Progress Reports

This project evaluated granular corn gluten meal (CGM) application rates and cultivar performance for day-neutral strawberry production in Iowa. CGM is a byproduct of the wet milling of corn. It provides 10% nitrogen by weight and can serve as a natural nitrogen product. Seascape is a newer day-neutral cultivar, and its adaptation to Iowa needs to be evaluated and compared with the standard Tristar and Tribute day-neutral strawberries.


2005 Crabgrass Control Trial, Lukas A. Dant, Nick E. Christians Jan 2006

2005 Crabgrass Control Trial, Lukas A. Dant, Nick E. Christians

Iowa State Research Farm Progress Reports

The objective of this study was to evaluate the efficacy of several preemergence herbicides for the control of crabgrass in Kentucky bluegrass (Poa pratensis L.) turf.


Stark Northern Prize—A Hardy Persian Walnut, Paul A. Domoto Jan 2006

Stark Northern Prize—A Hardy Persian Walnut, Paul A. Domoto

Iowa State Research Farm Progress Reports

Stark Brothers Nursery, Louisiana, Missouri, has released for sale a new walnut cultivar named Stark Northern Prize™. This tree is a cold-resistant Persian (Carpathian) walnut, Juglans regia. It was selected from a population of open-pollinated seedlings planted at the Iowa State University Horticulture Station, Ames, Iowa, in 1971 and was evaluated as ISU71-E18. In 2002, the U.S. plant patent was received for the walnut tree named Domoto. In 2005, pairs of ISU Domoto, aka Stark Northern Prize™, walnut trees were planted at the ISU research farms near Sutherland, Kanawha, Nashua, Lewis, Chariton, and Crawfordsville and at the Horticulture Station ...


2002 Leopold Grape Cultivar By Management System Trial, Paul A. Domoto, Gail R. Nonnecke Jan 2006

2002 Leopold Grape Cultivar By Management System Trial, Paul A. Domoto, Gail R. Nonnecke

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 ISU Horticulture (Hort) Station and the ISU Armstrong Research Farm with the help of a grant from the Leopold Center of Sustainable Agriculture. Fifteen cultivars, including 10 wine and 5 seedless table cultivars, were evaluated under 1) a conventional management system that relies on herbicides for weed control and application of insecticides and fungicides on a regular basis; 2) an IPM/best management system that uses herbicides as needed and relies on monitoring to determine the need for insecticides and fungicides ...


2005 Home Demonstration Gardens, Cynthia L. Haynes Jan 2006

2005 Home Demonstration Gardens, Cynthia L. Haynes

Iowa State Research Farm Progress Reports

Home demonstration gardens were located at nine sites across the state. The objective of the garden was to grow diverse plants in order to display and compare a wide variety of vegetables and flowers. The 2005 garden included a continental garden, summer squash, marigolds, basil, and Black-eyed Susans. The continental garden included domesticated plants from four continental areas: Asia, Europe, Africa, and the Americas.


Evaluation Of Organic Soybean Rust Treatments For Organic Production - Neely-Kinyon Trial, 2005, Kathleen Delate, Andrea Mckern, Daniel Rosmann, Robert Burcham Jan 2006

Evaluation Of Organic Soybean Rust Treatments For Organic Production - Neely-Kinyon Trial, 2005, Kathleen Delate, Andrea Mckern, Daniel Rosmann, Robert Burcham

Iowa State Research Farm Progress Reports

Asian soybean rust, which arrived in the United States in 2004, has the potential to be the single most important impediment to economical organic soybean production in the United States. The economic impact of ASR in organic systems could range from $30 to $120 million in yield loss, upon its arrival in organic soybean areas. The fungus (Phakopsora pachyrhizi) survives year-round in warm areas, such as the southern United States. During a growing season, the pathogen is disseminated by northward seasonal wind.


On-Farm Research Trial On Iowa Strawberry Production With Usda/Nrcs Soil Quality Test Kit, Craig A. Dilley, Gail R. Nonnecke Jan 2006

On-Farm Research Trial On Iowa Strawberry Production With Usda/Nrcs Soil Quality Test Kit, Craig A. Dilley, Gail R. Nonnecke

Iowa State Research Farm Progress Reports

The profitability of strawberry production is dependent in large part on the condition, or quality, of the soil being used. Soils with poor physical structure, chemical properties, or biological activity require more cultivation, fertilizers, and other inputs to maintain economic viability. In general, cultivation of the soil for crop production degrades the soil. At some point, the cost of inputs will outweigh the value of the strawberry crop being produced. It is therefore essential for growers to monitor the productive capacity of their soil.


Tolerance Of Kentucky Bluegrass To Mesotrione, Marcus A. Jones, Nick E. Christians Jan 2006

Tolerance Of Kentucky Bluegrass To Mesotrione, Marcus A. Jones, Nick E. Christians

Iowa State Research Farm Progress Reports

Creeping bentgrass (Agrostis stolonifera L.) is a stoloniferous, cool-season perennial grass used predominately on golf course putting greens in temperate regions of the United States. Its use on golf course fairways is increasing steadily as new cultivars possess improved shoot density and disease tolerance. However, due to the aggressive growth habit of bentgrass, it often spreads into surrounding areas of Kentucky bluegrass (Poa pratensis L.) forming unsightly, scattered patches.


2002 Leopold Grape Cultivar By Management System Trial, Paul A. Domoto Jan 2006

2002 Leopold Grape Cultivar By Management System Trial, Paul A. Domoto

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 ISU Horticulture (Hort) Station and the ISU Armstrong Research Farm with the help of a grant from the Leopold Center of Sustainable Agriculture. Fifteen cultivars, including 10 wine and 5 seedless table cultivars, were evaluated under 1) a conventional management system that relies on herbicides for weed control and application of insecticides and fungicides on a regular basis; 2) an IPM/best management system that uses herbicides as needed and relies on monitoring to determine the need for insecticides and fungicides ...


Stark Northern Prize—A Hardy Persian Walnut, Paul A. Domoto Jan 2006

Stark Northern Prize—A Hardy Persian Walnut, Paul A. Domoto

Iowa State Research Farm Progress Reports

Stark Brothers Nursery, Louisiana, Missouri, has released for sale a new walnut cultivar named Stark Northern Prize™. This tree is a cold-resistant Persian (Carpathian) walnut, Juglans regia. It was selected from a population of open-pollinated seedlings planted at the Iowa State University Horticulture Station, Ames, Iowa, in 1971 and was evaluated as ISU71-E18. In 2002, the U.S. plant patent was received for the walnut tree named Domoto. In 2005, pairs of ISU Domoto, aka Stark Northern Prize™, walnut trees were planted at the ISU research farms near Sutherland, Kanawha, Nashua, Lewis, Chariton, and Crawfordsville and at the Horticulture Station ...


Low-Input Sustainable Turfgrass: A Regional Cooperative Research Project, Shui-Zhang Fei, Christopher Blume, David D. Minner, Nick E. Christians Jan 2006

Low-Input Sustainable Turfgrass: A Regional Cooperative Research Project, Shui-Zhang Fei, Christopher Blume, David D. Minner, Nick E. Christians

Iowa State Research Farm Progress Reports

I

rrigation, fertilization, and application of pesticides are needed to maintain healthy turfgrass. Due to dwindling water resources and increased environmental concerns over the use of fertilizers and pesticides on turfgrass, there is an increasing need to minimize the inputs to maintaining them. Most of the turfgrass species that are currently in use require a relatively high level of input to maintain acceptable turf quality; however, efforts to develop turfgrass cultivars with enhanced biotic and abiotic stress tolerance can lead to reduced irrigation and fewer chemical applications. An alternative approach to this problem is to search and find existing grass ...


2003 Wine Grape Cultivar Trial, Paul A. Domoto, Gail R. Nonnecke, Bernard J. Havlovic, Kenneth T. Pecinovsky, Kevin Van Dee Jan 2006

2003 Wine Grape Cultivar Trial, Paul A. Domoto, Gail R. Nonnecke, Bernard J. Havlovic, Kenneth T. Pecinovsky, Kevin Van Dee

Iowa State Research Farm Progress Reports

To assess the regional adaptation of wine grape cultivars to 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 and contracted to the ISU Department of Horticulture. The trial was designed to evaluate up to 20 cultivars or advanced selections and was established on four ISU farms representing different geographic, climatic, and soil conditions: Horticulture (Hort) Station, Ames; the Armstrong Research Farm, Lewis; the Southeast Research Farm, Crawfordsville; and the Northeast Research Farm, Nashua. Cultivars and selections planted in 2003 included Rubiana ...


Field Evaluation Of Roundup Ready® Kentucky Bluegrass, Christopher Blume, Shui-Zhang Fei, Nick E. Christians Jan 2006

Field Evaluation Of Roundup Ready® Kentucky Bluegrass, Christopher Blume, Shui-Zhang Fei, Nick E. Christians

Iowa State Research Farm Progress Reports

Demand for genetically modified crops has seen an increase in popularity. Along with the benefits modified crops provide, there are some concerns of their ecological impact. The objectives of the Roundup Ready® bluegrass study were to establish conventional cultivars of Kentucky bluegrass, tissue culture–regenerated genotypes from conventional cultivars and transformed lines (glyphosate resistant) of Kentucky bluegrass in order to evaluate their vegetative and reproductive traits. Assessing these traits will allow us to determine if the transformed plants pose an ecological threat. All lines will be studied in a mown, competitive as well as a nonmown, noncompetitive setting. Once established ...


The Response Of Kentucky Bluegrass Turf To Varying Nitrogen Sources, Christopher Blume, Nick E. Christians, K. Joo Yong Jan 2006

The Response Of Kentucky Bluegrass Turf To Varying Nitrogen Sources, Christopher Blume, Nick E. Christians, K. Joo Yong

Iowa State Research Farm Progress Reports

The objective of the 2005 nitrogen (N) source study was to compare the turf response and N release rates of various experimental fertilizer products being proposed for marketing to a number of industry standards, such as Milorganite, Sustane, Nature Safe, corn gluten meal, Renaissance, and urea. An untreated control was added for comparison.


Sustainable Weed Management Systems To Improve Soil Quality In Midwest Viticulture, Craig A. Dilley, Gail R. Nonnecke Jan 2006

Sustainable Weed Management Systems To Improve Soil Quality In Midwest Viticulture, Craig A. Dilley, Gail R. Nonnecke

Iowa State Research Farm Progress Reports

The use of herbicides in vineyards has been an effective and cost-efficient means of in-row weed management. However, as public concerns about environmental issues have increased, grape growers have become aware of a need for alternative methods of weed management. The overall objective of this project is to identify optimal weed management practices that maximize grapevine growth and development as well as the quality of vineyard soils. A secondary objective of the project is to determine physical and biological soil measurements that could be used in combination with standard chemical soil analyses to indicate an improving or declining condition of ...


Rapid Conversion Of The Golf Course Putting Greens To Glyphosate-Resistant Creeping Bentgrass, Luke A. Dant, Nick E. Christians Jan 2006

Rapid Conversion Of The Golf Course Putting Greens To Glyphosate-Resistant Creeping Bentgrass, Luke A. Dant, Nick E. Christians

Iowa State Research Farm Progress Reports

A genetically transformed creeping bentgrass cultivar that is resistant to the nonselective herbicide glyphosate has been developed. To date, glyphosate-resistant creeping bentgrass is not commercially available, but its use could ease weed control and improve overall quality of the putting surface. This innovation presents golf course superintendents with the opportunity to convert existing putting greens to glyphosate-resistant creeping bentgrass. To minimize disruption of golf play, methods that speed conversion of putting greens are needed. The objectives of this experiment were to evaluate how seeding date, mowing height, and nitrogen (N) fertility level affect conversion speed of established putting greens to ...


2005 Home Demonstration Gardens, Cynthia L. Haynes Jan 2006

2005 Home Demonstration Gardens, Cynthia L. Haynes

Iowa State Research Farm Progress Reports

Home demonstration gardens were located at nine sites across the state. The objective of the garden was to grow diverse plants in order to display and compare a wide variety of vegetables and flowers. The 2005 garden included a continental garden, summer squash, marigolds, basil, and black-eyed Susans. The continental garden included domesticated plants from four continental areas: Asia, Europe, Africa, and the Americas.