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Effects Of Long-Term Tillage And Crop Rotation On Yield And Soil Carbon, Mahdi Al-Kaisi, Mark A. Licht, Beth E. Larabee Jan 2006

Effects Of Long-Term Tillage And Crop Rotation On Yield And Soil Carbon, Mahdi Al-Kaisi, Mark A. Licht, Beth E. Larabee

Iowa State Research Farm Progress Reports

Tillage system and crop rotation have significant long-term effects on soil productivity and soil components such as soil carbon as well as on soil physical, biological, and chemical properties. In addition, both tillage and crop rotation have effects on weed and soil disease control. There is a definite 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 soil productivity.


Long-Term Effects Of Tillage And Crop Rotation On Yield And Soil Carbon, Mahdi Al-Kaisi, Mark A. Licht, Beth E. Larabee Jan 2006

Long-Term Effects Of Tillage And Crop Rotation On Yield And Soil Carbon, Mahdi Al-Kaisi, Mark A. Licht, Beth E. Larabee

Iowa State Research Farm Progress Reports

Tillage system and crop rotation have significant long-term effects on soil productivity and soil components such as soil carbon as well as on physical, biological, and chemical properties of soil. In addition, both tillage and crop rotation have effects on weed and soil disease control. There is a definite 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 soil productivity.


Bt/Nonbt Corn Variety Evaluation Study, Kenneth T. Pecinovsky Jan 2006

Bt/Nonbt Corn Variety Evaluation Study, Kenneth T. Pecinovsky

Iowa State Research Farm Progress Reports

The 2005 growing season marks the tenth year that Bt corn varieties were commercially grown and evaluated at the Northeast Research and Demonstration Farm. Bacillus thuringiensis, commonly known as Bt, is a naturally occurring soil bacterium toxic to European corn bores (ECB) that has been genetically modified and inserted into the corn hybrids. European corn borer incidence is highly variable by year and location. Bt seed corn and insecticide applications are not always warranted each year because of low corn borer populations, due to environmental conditions, several fungal diseases, natural enemies/predators, and parasites. Bt hybrids offer a management option ...


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.


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.


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.


Water Quality Research Update, David Haden Jan 2006

Water Quality Research Update, David Haden

Iowa State Research Farm Progress Reports

Water quality research has been a top priority for the directors of the Northwest Iowa Experimental Association. This type of work involves collecting water samples from tile drainage systems or surface runoff. Tile drainage research requires several acres of uniformly permeable soil. Surface runoff research needs several acres with uniform slope. The adjoining 120 acres recently purchased by the association meets the needs for both types of this research.


Farm And Weather Summary Northwest Research Farms, David Haden Jan 2006

Farm And Weather Summary Northwest Research Farms, David Haden

Iowa State Research Farm Progress Reports

Includes:

Farm Comments

Crop Season Comments

Weather Comments


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

Barley Variety Test, Ronald Skrdla, Jean-Luc Jannink

Iowa State Research Farm Progress Reports

Sixteen varieties were included in the 2005 barley test at Sutherland. 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 2 bushels/acre. All barley plots were harvested on July 11.


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.


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 ...


Potato Cultivar Trial, Vincent Lawson Jan 2006

Potato Cultivar Trial, Vincent Lawson

Iowa State Research Farm Progress Reports

The trial objective was to identify potato cultivars with good quality for processing or fresh-market use adapted to Iowa growing conditions. Several cultivars were planted in replicated trials on April 14, 2004, and on April 18, 2005, in rows 38 in. apart and in plots consisting of twenty-two seed pieces spaced 11 in. apart. Potatoes were grown in a sandy soil and with overhead irrigation. The 2004 mild temperatures and favorable growing conditions led to excellent yields and quality (see Potato Cultivar Trial, Annual Fruit/Vegetable Progress Report 2004, FG 601). The 2005 growing season was a little more challenging ...


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.


Soil Moisture, Joel L. Dejong, Paul C. Kassel Jan 2006

Soil Moisture, Joel L. Dejong, Paul C. Kassel

Iowa State Research Farm Progress Reports

Soil moisture samples were taken at 29 sites in northwest Iowa during late October 2005. Moisture samples were taken at 1-ft increments to a 5-ft depth. Samples were weighed, oven dried, and reweighed at the Sutherland Research Farm. The moisture percentages were calculated from these data, and then they were used to calculate the inches of plant available moisture in the soil.


Bell Pepper Cultivar Trial, Vincent Lawson Jan 2006

Bell Pepper Cultivar Trial, Vincent Lawson

Iowa State Research Farm Progress Reports

The 2005 bell pepper cultivar trial was conducted at the Muscatine Island Research Farm, Fruitland, Iowa, and made possible by funding from Iowa Fruit and Vegetable Growers Association. The trial objective was to identify bell pepper cultivars with good production characteristics suitable for Iowa’s variable and frequently stressful growing climate for peppers.


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.


Strawberry Cultivar Trial, Patrick O'Malley, Kenneth T. Pecinovsky Jan 2006

Strawberry Cultivar Trial, Patrick O'Malley, Kenneth T. Pecinovsky

Iowa State Research Farm Progress Reports

The purpose of this multiyear study is to compare the performance of newer strawberry cultivars with popular Iowa-grown older cultivars under soil and environmental conditions at the Northeast Research and Demonstration Farm.


Research Farm Projects, Armstrong And Neely-Kinyon Research And Demonstration Farms Jan 2006

Research Farm Projects, Armstrong And Neely-Kinyon Research And Demonstration Farms

Iowa State Research Farm Progress Reports

No abstract provided.


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.


Phosphorus And Potassium Fertilizer Placement For Corn And Soybeans Managed With No-Till And Chisel-Disk Tillage, Antonio P. Mallarino, Bernard J. Havlovic, Jeff Butler Jan 2006

Phosphorus And Potassium Fertilizer Placement For Corn And Soybeans Managed With No-Till And Chisel-Disk Tillage, Antonio P. Mallarino, Bernard J. Havlovic, Jeff Butler

Iowa State Research Farm Progress Reports

A long-term study was initiated in 1994 to evaluate phosphorus (P) and potassium (K) fertilizer rates and placement methods for corn and soybeans managed with no-till and chisel-plow tillage. No-till management resulted in little or no incorporation of residue and fertilizer into the soil. Broadcast fertilization has generally been inefficient with no-till because both nutrients accumulate near the soil surface. Subsurface banding of P and K fertilizers, however, can be more effective.


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.


Long-Term Conservation Tillage Study, Greg Brenneman, Kevin Van Dee Jan 2006

Long-Term Conservation Tillage Study, Greg Brenneman, Kevin Van Dee

Iowa State Research Farm Progress Reports

The project goal is to compare yields of three different tillage systems on a sloping, moderately well drained soil (Nira) and on a nearly level, poorly drained soil (Kalona) in a continuous corn and a corn-soybean system. This study was begun in 1990 using no-till, ridge-till, and chisel-disk tillage systems. Results for 1990–1994 were previously reported.


Mower Sharpness And Creeping Bentgrass Quality Of Cut, Mark J. Howieson, Nick E. Christians Jan 2006

Mower Sharpness And Creeping Bentgrass Quality Of Cut, Mark J. Howieson, Nick E. Christians

Iowa State Research Farm Progress Reports

Regular mower maintenance is essential to achieve the best possible quality of cut. Dull mowers tear leaf tissue, severely wounding the plant and resulting in formation of frayed and necrotic leaf tips. Severe wounding may limit growth and development of grasses and increase susceptibility to stresses such as drought, pathogens, insects, and traffic. The objective of this study was to quantify mower sharpness and mowing injury over time. This information will be used to develop general mower maintenance guidelines and to determine how frequently reel-type mowers should be sharpened to achieve the best possible quality of cut.


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.