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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.


Grain Yield Of Corn, Soybeans, And Oats As Affected By Crop Rotation And Nitrogen Fertilization For Corn, Antonio P. Mallarino, Enrique Ortiz-Torres Jan 2006

Grain Yield Of Corn, Soybeans, And Oats As Affected By Crop Rotation And Nitrogen Fertilization For Corn, Antonio P. Mallarino, Enrique Ortiz-Torres

Iowa State Research Farm Progress Reports

The yield of crops can be significantly affected by the crop rotation. Crop characteristics and associated management practices influence physical and chemical properties of soil; water availability; and incidence of diseases, weeds, and pests. Including legumes in a rotation usually increases soil nitrogen (N) availability for grain crops. A crop rotation was started in 1984 to study the effect on crop yields of seven crop sequences and N fertilization rates for corn. Table 1 shows the sequences and N rates used since 1984. Nitrogen treatments of 0, 80, 160, and 240 lb N/acre were applied only for corn. Granulated ...


Redesigning Beef Cattle To Have A More Healthful Fatty Acid Composition, Shu Zhang, Travis J. Knight, Richard G. Tait Jr., Allen H. Trenkle, Doyle E. Wilson, Gene H. Rouse, Daryl R. Strohbehn, James M. Reecy, Donald C. Beitz, Jennifer A. Minick Jan 2006

Redesigning Beef Cattle To Have A More Healthful Fatty Acid Composition, Shu Zhang, Travis J. Knight, Richard G. Tait Jr., Allen H. Trenkle, Doyle E. Wilson, Gene H. Rouse, Daryl R. Strohbehn, James M. Reecy, Donald C. Beitz, Jennifer A. Minick

Iowa State Research Farm Progress Reports

We propose to improve the fatty acid composition of beef by capitalizing on the natural genetic differences among animals. It is our thought that improvements in the healthfulness of the fatty acid composition of beef can be made while maintaining other positive attributes. Stearoyl-CoA desaturase is responsible for the conversion of 16:0 and 18:0 to 16:1 and 18:1, respectively, the two major monounsaturated fatty acids of bovine lipids.


Biomass Production And Soil Respiration In Experimental Riparian Grass Filter Strips, James W. Raich, Germán Mora Jan 2006

Biomass Production And Soil Respiration In Experimental Riparian Grass Filter Strips, James W. Raich, Germán Mora

Iowa State Research Farm Progress Reports

Grass filter strips established between cropped fields and streams have many potential conservation benefits, including trapping sediments and runoff, providing wildlife habitat, transforming nitrogen in runoff waters, sequestering soil carbon, and enhancing soil tilth. In this study, we compared five species of grasses with respect to above ground biomass production and soil respiration (i.e., CO2 flux), the latter being a robust measure of total soil biological activity. The information may help landowners select the best grass species for planting in streamside filters and buffer strips.


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 ...


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.


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 ...


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.


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 ...


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.


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.


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.


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 ...


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 ...


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.


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 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 3 bushels/acre. The oat plots were harvested on July 22.


Nitrogen Management Of Winter Triticale, Lance R. Gibson, Carasella Nance, Douglas L. Karlen Jan 2006

Nitrogen Management Of Winter Triticale, Lance R. Gibson, Carasella Nance, Douglas L. Karlen

Iowa State Research Farm Progress Reports

Triticale (trit-ah-kay-lee) is a close relative of wheat. When durum wheat is pollinated with rye pollen, the cross is used in a breeding program to produce stable, self-replicating varieties. Triticale yield, stress tolerance, and disease resistance are typically greater than similar traits found in wheat. Triticale does not currently possess the grain traits of bread wheat, so its greatest market potential is as animal feed.


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

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

Iowa State Research Farm Progress Reports

Twelve varieties were included in the 2005 winter triticale variety test at Sutherland. Each variety was sown in three different plots to average the effects of soil variability. The varieties were planted October 5, 2004, at a rate of 1 1/2 bushels/acre. All winter triticale plots were harvested on July 11.


Scouting Recommendations For Soybean Aphid Aphis Glycines Management, Kevin D. Johnson Jan 2006

Scouting Recommendations For Soybean Aphid Aphis Glycines Management, Kevin D. Johnson

Iowa State Research Farm Progress Reports

Anyone who has tried to count the entire number of aphids on a single plant when populations are high can appreciate the need for a more time-efficient method of estimating aphid densities. One of the treatments in this study was designed to evaluate the speed scouting system developed at the University of Minnesota. (For more information see www.soybeans.umn.edu/crop/insects/aphid/aphi d_sampling.htm.). The speed scouting technique is a binary system in which a plant receives a score of either a ‘+’(more than 40 aphids/plant) or a ‘-’(fewer than 40 aphids/plant). Using this system ...


Farm And Weather Summary, L. James Secor Jan 2006

Farm And Weather Summary, L. James Secor

Iowa State Research Farm Progress Reports

Includes:

Farm Comments

Crop Season Comments

Weather Comments


Products Evaluated For Corn Rootworm Management, James A. Olson, Jonathan Tollefson Jan 2006

Products Evaluated For Corn Rootworm Management, James A. Olson, Jonathan Tollefson

Iowa State Research Farm Progress Reports

Commercially available corn rootworm products are evaluated yearly for their ability to protect corn-root systems from corn rootworm feeding injury. This report presents results from 2005 plus a three-year summary from locations throughout Iowa.


Farm And Weather Summary, Centraliowa Farms, Kent R. Berns Jan 2006

Farm And Weather Summary, Centraliowa Farms, Kent R. Berns

Iowa State Research Farm Progress Reports

Includes:

Farm Comments

Crop Season Comments

Weather Comments


Mcnay Memorial Research Farm: A Brief History, H. L. Self (Deceased), Mark S. Honeyman Jan 2006

Mcnay Memorial Research Farm: A Brief History, H. L. Self (Deceased), Mark S. Honeyman

Iowa State Research Farm Progress Reports

The McNay Memorial Research Farm in Warren Township, Lucas County, was started in 1956 when Harry and Winnie McNay deeded a 480-acre tract of land in Sections 5 and 8 to the Iowa State University Alumni Achievement Fund. From that time until the death of Winnie in 1967 and of Harry in 1975, an annuity to the McNays and the taxes and insurance were paid by the Alumni Achievement Fund. Throughout that period of time, the Iowa Agriculture and Home Economics Experiment Station leased the land from the Alumni Achievement Fund and used the property for research in accordance with ...


Impacts Of Beef Cattle–Grazing Systems On Cattle Distribution And Streambank Erosion, Mathew M. Haan, James R. Russell, Daniel G. Morrical, Daryl R. Strohbehn, Wendy J. Powers, Shelly Moeller, John Kovar Jan 2006

Impacts Of Beef Cattle–Grazing Systems On Cattle Distribution And Streambank Erosion, Mathew M. Haan, James R. Russell, Daniel G. Morrical, Daryl R. Strohbehn, Wendy J. Powers, Shelly Moeller, John Kovar

Iowa State Research Farm Progress Reports

Many of Iowa’s surface waters contain high sediment and phosphorus(P) concentrations. It is recognized that overgrazing along pasture streams may result in soil erosion and manure deposition that contribute to P loading of pasture streams. Little research has evaluated the effects of grazing management on sediment and P loading of pasture streams in the Midwest, but grazing management is still generally considered to limit sediment and P loading of pasture streams. The objective of this study was to measure the effects of beef cattle– grazing systems on the spatial and temporal distribution patterns of cattle, the resulting impacts ...


Soybean Aphid Aphis Glycines Matsumura (Homoptera: Aphididae) Insecticide Performance In Floyd County, Iowa, Kevin D. Johnson, Matthew E. O'Neal Jan 2006

Soybean Aphid Aphis Glycines Matsumura (Homoptera: Aphididae) Insecticide Performance In Floyd County, Iowa, Kevin D. Johnson, Matthew E. O'Neal

Iowa State Research Farm Progress Reports

In 2005, the soybean aphid reached economic populations in many Iowa counties. A frequent question from growers has been, “What product offers the highest level of soybean aphid control under Iowa conditions?” To help answer this question we established a replicated field experiment at the Northeast Research Farm located in Floyd County, Iowa.


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 often increase, up to a point, with increasing plant population. 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 increased tremendously over the last couple of years. Our 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 in northeast Iowa.


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 ...


Southeast Iowa Agricultural Research Association, Southeast Research And Demonstration Farm Jan 2006

Southeast Iowa Agricultural Research Association, Southeast Research And Demonstration Farm

Iowa State Research Farm Progress Reports

No abstract provided.


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.