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Plant Species Effects On Diversity And Weed Invasion Resistance In Restored Grasslands, Brian J. Wilsey, David Losure Jan 2006

Plant Species Effects On Diversity And Weed Invasion Resistance In Restored Grasslands, Brian J. Wilsey, David Losure

Iowa State Research Farm Progress Reports

Native grasslands provide a multitude of benefits to society including forage production, wildlife habitat, and nutrient and CO2 sequestration. There has been continuing interest in restoring grasslands to maximize these multiple benefits within the conservation community. There are presently many ongoing prairie restoration projects, and many more are being started throughout Iowa. Warm-season grasses such as big bluestem, indian grass, switchgrass, little bluestem, or side-oats grama often dominate prairies. In western Iowa, all five of these species are dominant, at least in some patches of grassland. Diversity is what most people are most concerned with when they restore or reconstruct ...


Asian Soybean Rust Sentinel Plots, Ralph Von Qualen, Xiao-Bing Yang Jan 2006

Asian Soybean Rust Sentinel Plots, Ralph Von Qualen, Xiao-Bing Yang

Iowa State Research Farm Progress Reports

Asian soybean rust (SBR) caused by Phakopsora pachyrhizi was discovered for the first time in the continental United States in November 2004. It was known that under the right conditions, this pathogen could spread rapidly and cause severe yield losses. There are no resistant soybean varieties available, and management requires proper timing of fungicide treatments. In addition to the impact of the disease itself, there are concerns that producers would be tempted to treat their fields unnecessarily before the fungus was present in their area, making their treatments ineffective and increasing the costs of production.


Double-Cropped Field Pea Crop Rotation Study, James A. Fawcett Jan 2006

Double-Cropped Field Pea Crop Rotation Study, James A. Fawcett

Iowa State Research Farm Progress Reports

Farmers are continually searching for a third crop to complement the corn-soybean rotation. Field peas can be substituted for most of the soybean meal in swine rations and may be more economical than soybean meal, so there is a huge potential market for field peas in Iowa. Field peas are a short-season crop, which makes double cropping a possibility. There have been recent reports from Illinois of some success in planting field peas in the summer after a winter wheat harvest.


Oat Variety Test, Ronald Skrdla, Jean-Luc Jannink Jan 2006

Oat Variety Test, Ronald Skrdla, Jean-Luc Jannink

Iowa State Research Farm Progress Reports

Twenty-eight varieties were included in the 2005 oat variety test at Nashua. Each variety was sown in three different plots to average the effects of soil variability. The varieties were planted on March 29 at a rate of 3 bushels/acre. The oat plots were harvested on July 28.


Soybean Yield Influenced By Planting Date And Plant Population, Palle Pedersen Jan 2006

Soybean Yield Influenced By Planting Date And Plant Population, Palle Pedersen

Iowa State Research Farm Progress Reports

Soybean yields tend to increase with rising plant populations. However, soybean yield responses to plant population are generally small and often inconsistent. In general, increasing plant populations increase plant height and result in greater yield losses from lodging. Soybean seed prices have risen tremendously over the last couple of years. My hypothesis is that seed cost can be reduced in replanted fields. The objective of this experiment was to determine the optimum plant population across different planting dates using different tillage systems.


2005 Project List, Western Research And Demonstration Farm Jan 2006

2005 Project List, Western Research And Demonstration Farm

Iowa State Research Farm Progress Reports

No abstract provided.


Northwest Iowa Experimental Association, Northwest Research Farm And Allee Demonstration Farm Jan 2006

Northwest Iowa Experimental Association, Northwest Research Farm And Allee Demonstration Farm

Iowa State Research Farm Progress Reports

No abstract provided.


Absorbency Of Alternative Livestock Bedding Sources, Reggie Voyles, Mark S. Honeyman Jan 2006

Absorbency Of Alternative Livestock Bedding Sources, Reggie Voyles, Mark S. Honeyman

Iowa State Research Farm Progress Reports

As the demand for niche-marketed meats increases, so does need for research in this area. One niche market that is being examined is pork raised in deep-bedded systems. There is also a call for alternative bedding materials. Farm-produced bedding sources such as cornstalks and various types of straws are commonly used. However, this study looked at other possible materials. Products were tested to see if they could be equal substitutes based on their absorbency. A ground lumber product and a ground lumber with drywall product with a ratio of 8:1 lumber-to-drywall were tested. These products were produced from demolished ...


Seasonal And Rotational Influences On Corn Nitrogen Requirements, John E. Sawyer, Daniel W. Barker Jan 2006

Seasonal And Rotational Influences On Corn Nitrogen Requirements, John E. Sawyer, Daniel W. Barker

Iowa State Research Farm Progress Reports

This project is designed to study the nitrogen (N) fertilization needs in continuous corn (C-C) and corn rotated with soybean (C-S) as influenced by location and climate. Multiple rates of N fertilizer are applied in the spring, with the intent to measure the yield response to N fertilization within each rotation on a yearly basis at multiple sites across Iowa. This allows the determination of N requirements for each rotation practice, differences that exist between the two rotations, responses to applied N across different soils and climatic conditions, and evaluation of tools used to adjust the N application.


Designing A Hoop Building For Feeding Beef Cattle, Shawn C. Shouse, W. Darrell Busby, Dallas L. Maxwell Jan 2006

Designing A Hoop Building For Feeding Beef Cattle, Shawn C. Shouse, W. Darrell Busby, Dallas L. Maxwell

Iowa State Research Farm Progress Reports

At the request and urging of beef cattle feeders in southwest Iowa, this project was designed to explore the feasibility of using a hoop building to reduce the facility costs associated with feeding beef cattle in bedded confinement. Design and construction of the facility followed best available industry recommendations and judgment of the authors and experienced cattle feeders, where innovation was required. Following this initial design and construction, performance of the cattle and facility have been compared with a semiconfinement feeding facility on the same farm.


Organic Beef Cattle Grazing Demonstration, Mark S. Honeyman, Russell Bredahl, Dennis R. Maxwell Jan 2006

Organic Beef Cattle Grazing Demonstration, Mark S. Honeyman, Russell Bredahl, Dennis R. Maxwell

Iowa State Research Farm Progress Reports

There is growing interest in grass-fed organic beef. The objective of this study was to compare the performance of conventional feedlot-based cattle finishing with organic beef cattle finishing.


Wallace Foundation For Rural Research And Development, Armstrong And Neely-Kinyon Research And Demonstration Farms Jan 2006

Wallace Foundation For Rural Research And Development, Armstrong And Neely-Kinyon Research And Demonstration Farms

Iowa State Research Farm Progress Reports

No abstract provided.


Winter Wheat Variety Test, Ronald Skrdla, Jean-Luc Jannink Jan 2006

Winter Wheat Variety Test, Ronald Skrdla, Jean-Luc Jannink

Iowa State Research Farm Progress Reports

Twenty-two varieties were included in the 2005 winter wheat variety test at Crawfordsville. Each variety was sown in three different plots to average the effects of soil variability. The varieties were planted September 21, 2004, at a rate of 1 1/2 bushels/acre. The wheat plots were harvested on July 7.


North Central Iowa Research Association, 2005, Northern Research And Demonstration Farm Jan 2006

North Central Iowa Research Association, 2005, Northern Research And Demonstration Farm

Iowa State Research Farm Progress Reports

No abstract provided.


Seasonal And Rotational Influences On Corn Nitrogen Requirements, John E. Sawyer, Daniel W. Barker Jan 2006

Seasonal And Rotational Influences On Corn Nitrogen Requirements, John E. Sawyer, Daniel W. Barker

Iowa State Research Farm Progress Reports

This project is designed to study the nitrogen (N) fertilization needs in continuous corn (C-C) and corn rotated with soybean (C-S) as influenced by location and climate. Multiple rates of N fertilizer are applied in the spring, with the intent to measure the yield response to N fertilization within each rotation on a yearly basis at multiple sites across Iowa. This allows the determination of N requirements for each rotation practice, differences that exist between the two rotations, responses to applied N across different soils and climatic conditions, and evaluation of tools used to adjust the N application.


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 ...


Iowa Crop Performance Test—Soybeans, Jim R. Rouse Jan 2006

Iowa Crop Performance Test—Soybeans, Jim R. Rouse

Iowa State Research Farm Progress Reports

The Iowa Crop Performance Test—Soybeans is conducted each year to provide information farmers need to select the best varieties or brands for their production conditions. Seed companies, Iowa farmers, and the Iowa Crop Improvement Association may include entries in these tests. The experiments grown in 2005 at the Southeast Research Farm were planted May 11 and harvested October 5. One test evaluated 16 lines of soybeans treated with conventional herbicide and another test evaluated 75 lines of Roundup® Ready (RR) beans.


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.


Information On Experiments In Previous Annual Progress Reports, Armstrong And Neely-Kinyon Research And Demonstration Farms Jan 2006

Information On Experiments In Previous Annual Progress Reports, Armstrong And Neely-Kinyon Research And Demonstration Farms

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.


Western Iowa Experimental Farm Association, 2005, Western Research And Demonstration Farm Jan 2006

Western Iowa Experimental Farm Association, 2005, Western Research And Demonstration Farm

Iowa State Research Farm Progress Reports

No abstract provided.


Evaluation Of Soybean Varieties Resistant To Soybean Cyst Nematode In Southeast Iowa In 2005, Gregory L. Tylka, Gregory D. Gebhart, Christopher C. Marett Jan 2006

Evaluation Of Soybean Varieties Resistant To Soybean Cyst Nematode In Southeast Iowa In 2005, Gregory L. Tylka, Gregory D. Gebhart, Christopher C. Marett

Iowa State Research Farm Progress Reports

Use of resistant soybean varieties is a very effective strategy for managing soybean cyst nematode (SCN), and numerous SCN-resistant soybean varieties are available for Iowa soybean growers. Each year, public and private SCN-resistant soybean varieties are evaluated in SCN-infested fields throughout Iowa by Iowa State University personnel. The research described in this report was performed to assess the agronomic performance of maturity group (MG) II and III SCN-resistant soybean varieties and to determine the effects of the varieties on SCN numbers or population densities.


Distance To Water Table, David Rueber Jan 2006

Distance To Water Table, David Rueber

Iowa State Research Farm Progress Reports

One of the reasons the Northern Research Farm south of Kanawha was purchased was to study tile drainage systems. In order to measure the depth to the water table, an open-ended pipe was installed in the ground near a four-foot-deep tile line. Since 1963, the distance to water table for selected dates has been recorded.


Research Farm Projects, Northern Research And Demonstration Farm Jan 2006

Research Farm Projects, Northern Research And Demonstration Farm

Iowa State Research Farm Progress Reports

No abstract provided.


Effects Of Triticale-Based Diets Fed In Deep-Bedded Hoop Barns On Finishing Pig Performance And Pork Quality, Zeb Sullivan, Mark S. Honeyman, Lance R. Gibson, Kenneth J. Prusa Jan 2006

Effects Of Triticale-Based Diets Fed In Deep-Bedded Hoop Barns On Finishing Pig Performance And Pork Quality, Zeb Sullivan, Mark S. Honeyman, Lance R. Gibson, Kenneth J. Prusa

Iowa State Research Farm Progress Reports

Triticale is a synthetic small grain that results from an intergeneric cross between durum wheat and rye. Triticale has shown potential as a feedstuff in swine diets. Producers who may find this to be an attractive crop may also raise swine in an alternative swine production system. The objective of the present study was to evaluate the effects of triticale-based diets on pork quality and finishing pig performance of pigs reared in deep-bedded hoop barns.


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 ...


Acknowledgments, Armstrong And Neely-Kinyon Research And Demonstration Farms Jan 2006

Acknowledgments, Armstrong And Neely-Kinyon Research And Demonstration Farms

Iowa State Research Farm Progress Reports

No abstract provided.


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 ...


Improving Alfalfa Yield Using Unimproved Germplasm, Xuehui Li, E. Charles Brummer Jan 2006

Improving Alfalfa Yield Using Unimproved Germplasm, Xuehui Li, E. Charles Brummer

Iowa State Research Farm Progress Reports

Most germplasm used in alfalfa cultivars in the north central region of the United States is purple flowered and referred to as sativa. Yellow-flowered (falcata) alfalfa is an unadapted germplasm that has made few contributions to the current cultivars. However, our previous research has shown that sativafalcata crosses (SFC) produce greater yield than sativa-sativa crosses (SSC). This indicates that falcata has favorable genes for yield and that the use of falcata may help improve yield in new cultivars.