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Iowa State Research Farm Progress Reports

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On-Farm Soybean Row Spacing Trials, Jim Fawcett, Josh Sievers, Lyle Rossiter, Jim Rogers Jan 2015

On-Farm Soybean Row Spacing Trials, Jim Fawcett, Josh Sievers, Lyle Rossiter, Jim Rogers

Iowa State Research Farm Progress Reports

Most past research has shown a yield benefit to planting soybeans in rows more narrow than 30-in. However, narrow rows occasionally can result in more soybean disease problems, such as white mold, which can result in higher yields with wider rows. Yield differences between wide and narrow rows often vary from year-to-year and fieldto-field.


On-Farm Corn Row Spacing Trials, Jim Fawcett, Mark Licht, Josh Sievers, Jim Rogers Jan 2015

On-Farm Corn Row Spacing Trials, Jim Fawcett, Mark Licht, Josh Sievers, Jim Rogers

Iowa State Research Farm Progress Reports

Over the past several decades there has been a shift in corn row spacing from the traditional 40-in. rows that were needed so horses could fit between the rows, to 38-in., 36-in., and the most popular 30-in. rows. The narrow row spacing usually has resulted in increased yields due to it allowing more space between the plants within the row. More recently there has been interest in seeing if a narrower row spacing (15-in. or 20-in.) will further increase corn yield.


Preplant And Postemergence Herbicide Programs For Weed Control In No-Till Soybean, Micheal Owen, Damian Franzenburg, James Lee, Jacob Eeling Jan 2015

Preplant And Postemergence Herbicide Programs For Weed Control In No-Till Soybean, Micheal Owen, Damian Franzenburg, James Lee, Jacob Eeling

Iowa State Research Farm Progress Reports

The purpose of this study was to evaluate various herbicides applied early pre-plant in no-till soybean for crop injury and weed control.


On-Farm Soybean Seed Treatment Trials, Jim Fawcett, Zack Koopman, Lance Miller, Wayne Roush, Josh Sievers Jan 2015

On-Farm Soybean Seed Treatment Trials, Jim Fawcett, Zack Koopman, Lance Miller, Wayne Roush, Josh Sievers

Iowa State Research Farm Progress Reports

Seed treatments offer protection from fungi, insects, and nematodes to germinating seeds and developing seedlings. All legumes require the appropriate rhizobium bacteria in the soil in order for nitrogen fixation to occur. Inoculating the seed with an inoculum can insure the crop can take advantage of this nitrogen fixation.


Evaluation Of Foliar Fungicides And Insecticides On Soybeans In Northeast Iowa, Daren Mueller, Stith Wiggs, Warren Pierson Jan 2015

Evaluation Of Foliar Fungicides And Insecticides On Soybeans In Northeast Iowa, Daren Mueller, Stith Wiggs, Warren Pierson

Iowa State Research Farm Progress Reports

Researchers at Iowa State University assessed fungicide and insecticide applications to soybeans at seven locations across Iowa including the Northwest Farm (Sutherland), Northern Farm (Kanawha), Northeast Farm (Nashua), Agronomy Farm (Boone), Armstrong Farm (Lewis), McNay Farm (Chariton), and Southeast Farm (Crawfordsville) (Figure 1).


On-Farm Soybean Fungicide Trials, Jim Fawcett, Lance Miller, Lyle Rossiter, Wayne Roush, Josh Sievers, Micah Smidt, Matt Schnabel Jan 2015

On-Farm Soybean Fungicide Trials, Jim Fawcett, Lance Miller, Lyle Rossiter, Wayne Roush, Josh Sievers, Micah Smidt, Matt Schnabel

Iowa State Research Farm Progress Reports

Fungicide applications have become more popular among soybean farmers in recent years. The primary use of fungicides has been to control diseases such as Septoria brown spot, Cercospora leaf blight, and frogeye leaf spot. With lower grain prices, the chances of getting an economic benefit from fungicide applications have decreased.


Corn And Soybean Yield Response To Micronutrients In Southwest Iowa, Antonio Mallarino, Mazhar Haq, Joshua Enderson, Ryan Oltmans, Bernie Havlovic Jan 2015

Corn And Soybean Yield Response To Micronutrients In Southwest Iowa, Antonio Mallarino, Mazhar Haq, Joshua Enderson, Ryan Oltmans, Bernie Havlovic

Iowa State Research Farm Progress Reports

Micronutrients are needed in very small amounts but are essential for crop growth. Prior research in Iowa and neighboring states showed inconsistent corn and soybean grain yield responses to fertilization with micronutrients, except for zinc in corn. This report summarizes results of two studies with corn and soybean, one with application to the soil and the other with application to foliage, which were conducted at this farm from 2012 through 2014. The micronutrients evaluated were boron (B), copper (Cu), manganese (Mn), and zinc (Zn).


Southeast Research Farm Summary, Myron Rees Jan 2015

Southeast Research Farm Summary, Myron Rees

Iowa State Research Farm Progress Reports

Contains the Farm and Weather Summary for the Southeast Research and Demonstration Farm.


Ntep Greens Height Bentgrass Study 2014, Dan Strey, Nick Christians, Ryan Adams Jan 2015

Ntep Greens Height Bentgrass Study 2014, Dan Strey, Nick Christians, Ryan Adams

Iowa State Research Farm Progress Reports

The National Turfgrass Evaluation Program (NTEP) conducts trials throughout the United States on turfgrass adaptation. This trial was initiated in September 2014 as part of the NTEP program. This is the first year data were collected. It contains 20 bentgrass cultivars.


On-Farm Soybean Fungicide Trials, Jim Fawcett, Lance Miller, Lyle Rossiter, Wayne Roush, Josh Sievers, Micah Smidt, Matt Schnabel Jan 2015

On-Farm Soybean Fungicide Trials, Jim Fawcett, Lance Miller, Lyle Rossiter, Wayne Roush, Josh Sievers, Micah Smidt, Matt Schnabel

Iowa State Research Farm Progress Reports

Fungicide applications have become more popular among soybean farmers in recent years. The primary use of fungicides has been to control diseases such as Septoria brown spot, Cercospora leaf blight, and frogeye leaf spot. With lower grain prices, the chances of getting an economic benefit from fungicide applications have decreased.


On-Farm Sulfur Fertilization Of Corn And Soybean Trials, Jim Fawcett, John Sawyer, Lance Miller, Jim Rogers, Wayne Roush Jan 2015

On-Farm Sulfur Fertilization Of Corn And Soybean Trials, Jim Fawcett, John Sawyer, Lance Miller, Jim Rogers, Wayne Roush

Iowa State Research Farm Progress Reports

In the past several years, sulfur (S) deficiency has been showing up more frequently in Iowa fields. This has been especially true in corn and alfalfa fields of northeast Iowa. This is thought to be partially due to Iowa receiving less S in the rainfall due to more stringent air pollution regulations, less S fertilizer applications, and less widespread use of manure. Sulfur fertilizer applications can offer yield increases when S deficiencies are present. The objective of these trials was to evaluate potential for S deficiency and grain yield response in corn and soybean to S applications.


In-Season N Fertilization Strategies Using Active Sensors, Daniel Barker, John Sawyer Jan 2015

In-Season N Fertilization Strategies Using Active Sensors, Daniel Barker, John Sawyer

Iowa State Research Farm Progress Reports

The objectives of this project were to measure corn yield response to applied nitrogen (N) fertilizer based on active canopy sensing during the mid-vegetative corn growth stage (V10) and compare yield and N use efficiency between pre-plant N (PP-N), pre-plant + sensor N (PP+S-N), split N strategy (SNS), and rescue N strategy (RNS).


Use By Honeybees Of Flowering Resources In And Around Corn Fields, Mary Harris, Reid Palmer, Joel Coats Jan 2015

Use By Honeybees Of Flowering Resources In And Around Corn Fields, Mary Harris, Reid Palmer, Joel Coats

Iowa State Research Farm Progress Reports

Corn seeds and seedlings are susceptible to attack by several early-season insect pests. Seed treatments have emerged as a means of reducing these insects. Seed-adhered insecticides include members of the class of chemicals referred to as neonicotinoids, which have been demonstrated to adversely affect honeybees. Pollen and nectar that foraging bees collect may be contaminated with neonicotinoids via direct spray, by plant translocation following treatment, and by contaminated dust generated during treatedseed planting.


Effectiveness Of Foliar Fungicides By Timing On Northern Leaf Blight On Hybrid Corn In Northern Iowa, Alison Robertson, John Shriver, Micah Smidt Jan 2015

Effectiveness Of Foliar Fungicides By Timing On Northern Leaf Blight On Hybrid Corn In Northern Iowa, Alison Robertson, John Shriver, Micah Smidt

Iowa State Research Farm Progress Reports

Fungicide use on hybrid corn has increased considerably, primarily due to reports of increased 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) assess the effect of timing of application of fungicides on disease, 2) evaluate the yield response of hybrid corn to foliar fungicide application, and 3) discern differences, if any, between fungicide products.


Corn And Soybean Yield Response To Micronutrients In Central Iowa, Antonio Mallarino, Mazhar Haq, Joshua Enderson, Ryan Oltmans, Mike Fiscus Jan 2015

Corn And Soybean Yield Response To Micronutrients In Central Iowa, Antonio Mallarino, Mazhar Haq, Joshua Enderson, Ryan Oltmans, Mike Fiscus

Iowa State Research Farm Progress Reports

Plant nutrients referred to as micronutrients are essential for crops, but are needed in very small amounts. Prior research in Iowa and neighboring states showed inconsistent corn and soybean grain yield responses to micronutrient applications, except for Zn in corn. This report summarizes results of two studies with corn and soybean, one with application to the soil and the other with application to foliage, which were conducted from 2012 through 2014. The micronutrients evaluated were boron (B), copper (Cu), manganese (Mn), and zinc (Zn).


Effectiveness Of Foliar Fungicides By Timing On Northern Leaf Blight And Common Rust On Hybrid Corn, Alison Robertson, Josh Sievers, Chad Huffman Jan 2015

Effectiveness Of Foliar Fungicides By Timing On Northern Leaf Blight And Common Rust On Hybrid Corn, Alison Robertson, Josh Sievers, Chad Huffman

Iowa State Research Farm Progress Reports

Fungicide use on hybrid corn has increased considerably, primarily due to reports of increased 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) assess the effect of timing of application of fungicides on disease, 2) evaluate the yield response of hybrid corn to foliar fungicide application, and 3) discern differences, if any, between fungicide products.


Fifth Year Performance Of Honeycrisp Grafted On 31 Dwarfing Rootstocks Of The Nc-140 2010 Regional Apple Rootstock Trial, Diana Cochran, Paul Domoto, Lynn Schroeder Jan 2015

Fifth Year Performance Of Honeycrisp Grafted On 31 Dwarfing Rootstocks Of The Nc-140 2010 Regional Apple Rootstock Trial, Diana Cochran, Paul Domoto, Lynn Schroeder

Iowa State Research Farm Progress Reports

Dwarfing rootstocks have the potential to increase profitability of tree-fruit growers by providing smaller trees suitable for highdensity plantings. Although the initial installation cost can be 10 to 30 times greater than lower-density plantings, the long-range returns can far exceed the traditional plantings. However, to be viable as a commercial rootstock, dwarfing rootstocks must be adapted to a range of agro-climatic conditions, moderately disease resistant, high yielding, and produce quality fruit.


Midwest Suction Trap Network, Doris Lagos-Kutz, David Voegtlin Jan 2015

Midwest Suction Trap Network, Doris Lagos-Kutz, David Voegtlin

Iowa State Research Farm Progress Reports

The Midwest Suction Trap Network was described in some detail in an earlier report from the Iowa State University Northeast Research and Demonstration Farm. This report is available online at: http://www.ag.iastate.edu/farms/10reports/Northeast/SuctionTrapNetwork.pdf. The Network has continued through the 2014 growing season with support from the North Central Soybean Research Program and soybean research programs from most of the Midwestern states. Currently, there is no funding to continue operating this network of suction traps, although a proposal to keep it operating for another three years has been submitted.


Mcnay Memorial Research And Demonstration Farm Summary, Nick Piekema, Kevin Maher Jan 2015

Mcnay Memorial Research And Demonstration Farm Summary, Nick Piekema, Kevin Maher

Iowa State Research Farm Progress Reports

Contains the Farm and Weather Summary for the McNay Memorial Research and Demonstration Farm.


Horticulture Enterprise Management (Hort/Ag Eds 465)–Year Review, Leah Riesselman, Gail Nonnecke Jan 2015

Horticulture Enterprise Management (Hort/Ag Eds 465)–Year Review, Leah Riesselman, Gail Nonnecke

Iowa State Research Farm Progress Reports

Originally introduced in the spring of 2011, the cross-listed Hort/Ag EdS 465 course was reintroduced Spring 2014 to the horticulture curriculum at Iowa State University. Modeled after the Ag 450 farm, the purpose of Hort/Ag EdS 465 is to provide students with the experience in managing a horticultural farm and to engage students in active learning of running a horticulture enterprise.


A Student-Managed Horticultural Enterprise Hort 465: The Beginnings, Mark Honeyman, Nick Howell, Malcom Robertson Jan 2015

A Student-Managed Horticultural Enterprise Hort 465: The Beginnings, Mark Honeyman, Nick Howell, Malcom Robertson

Iowa State Research Farm Progress Reports

In 2010, Wade Miller, chair of AgEdS department; Jeff Iles, chair of Horticulture department; and Mark Honeyman, coordinator of ISU Research Farms, including the Horticulture Research Station, began discussions that were the beginnings of a new course at ISU – Horticulture Enterprise Management, Hort/AgEdS 465X.


Corn And Soybean Yield Response To Micronutrients In Southeast Iowa, Antonio Mallarino, Joshua Enderson, Ryan Oltmans, Mazhar Haq, Myron Rees Jan 2015

Corn And Soybean Yield Response To Micronutrients In Southeast Iowa, Antonio Mallarino, Joshua Enderson, Ryan Oltmans, Mazhar Haq, Myron Rees

Iowa State Research Farm Progress Reports

Micronutrients are essential plant nutrients that are needed in very small amounts. Prior research in Iowa and neighboring states since the 1950s showed inconsistent corn and soybean grain yield responses to micronutrient applications, except for zinc in corn. This report summarizes results of two studies with corn and soybean rotations, one with application to the soil and the other with application to the foliage, which were conducted from 2012 through 2014. The micronutrients evaluated were boron (B), copper (Cu), manganese (Mn), and zinc (Zn).


Strip-Tillage And Row Cover Use In Organically And Conventionally Grown Muskmelon, Jennifer Tillman, Ajay Nair, Jean Batzer, Mark Gleason Jan 2015

Strip-Tillage And Row Cover Use In Organically And Conventionally Grown Muskmelon, Jennifer Tillman, Ajay Nair, Jean Batzer, Mark Gleason

Iowa State Research Farm Progress Reports

Growing muskmelon in a more sustainable way involves multiple management practices. “Rolling” cover crops after they mature, and then tilling strips into which the crops are planted, can help manage weeds and moisture while improving soil health. This “strip-tillage” technique provides a biodegradable mat that does not need to be removed at the season’s end, as plastic mulch does. Row covers are placed over newly planted seedlings to provide a better microclimate and a physical barrier to pests. Extending the time of row cover removal by 10 days after the onset of female flowers has been shown to provide ...


Midwest Suction Trap Network, Doris Lagos-Kutz, David Voegtlin Jan 2015

Midwest Suction Trap Network, Doris Lagos-Kutz, David Voegtlin

Iowa State Research Farm Progress Reports

The Midwest Suction Trap Network was described in some detail in an earlier report from the Iowa State University Northeast Research and Demonstration Farm. This report is available online at: http://www.ag.iastate.edu/farms/10reports/Northeast/SuctionTrapNetwork.pdf. The Network has continued through the 2014 growing season with support from the North Central Soybean Research Program and soybean research programs from most of the Midwestern states. Currently, there is no funding to continue operating this network of suction traps, although a proposal to keep it operating for another three years has been submitted.


Ntep Fairway Height Bentgrass Study 2014, Dan Strey, Nick Christians, Ryan Adams Jan 2015

Ntep Fairway Height Bentgrass Study 2014, Dan Strey, Nick Christians, Ryan Adams

Iowa State Research Farm Progress Reports

The National Turfgrass Evaluation Program (NTEP) conducts trials throughout the United States on turfgrass adaptation. This trial was initiated in September 2014 as a part of the NTEP program. This is the first year data were collected. It contains 17 bentgrass cultivars including both creeping and colonial bentgrasses.


On-Farm Corn Fertilizer Trials, Jim Fawcett, Jim Rogers, Lyle Rossiter, Wayne Roush, Josh Sievers Jan 2015

On-Farm Corn Fertilizer Trials, Jim Fawcett, Jim Rogers, Lyle Rossiter, Wayne Roush, Josh Sievers

Iowa State Research Farm Progress Reports

All cropping systems require fertilizer inputs in order to maintain crop yields. However, excess fertilizer, especially nitrogen and phosphorus, can increase problems with water quality. Starter fertilizer applied with the corn planter has been shown to sometimes increase corn yields. It is important for farmers to use the appropriate rates and methods of fertilizer application to optimize corn yields and minimize the impact on the environment.


Evaluation Of Soybean Varieties In The Northern Uniform Soybean Test–Uniform Test Iii, Silvia Cianzio, Peter Lundeen, Ryan Budnik, Greg Gebhart Jan 2015

Evaluation Of Soybean Varieties In The Northern Uniform Soybean Test–Uniform Test Iii, Silvia Cianzio, Peter Lundeen, Ryan Budnik, Greg Gebhart

Iowa State Research Farm Progress Reports

The Northern Uniform/Preliminary (UT-PT) Soybean Test is used to evaluate soybean varieties produced by public breeding programs in the Northern portion of the United States and Canada. In 2014, 10 public breeding programs participated in the Northern UT-PT III Tests (Uniform Test III and Preliminary Test IIIA and IIIB). Public breeders were allowed to enter varieties into the UT-PT Test in exchange for growing locations for the test. Material entered into the UT-PT Test is generally in advanced stages of a breeding program. Lines are evaluated one year in Preliminary Testing before being entered in Uniform Tests. Lines usually ...


In-Season N Fertilization Strategies Using Active Sensors, Daniel Barker, John Sawyer Jan 2015

In-Season N Fertilization Strategies Using Active Sensors, Daniel Barker, John Sawyer

Iowa State Research Farm Progress Reports

The objectives of this project were to measure corn yield response to applied nitrogen (N) fertilizer based on active canopy sensing during the mid-vegetative corn growth stage (V10) and compare yield and N use efficiency between pre-plant N (PP-N), pre-plant + sensor N (PP+S-N), split N strategy (SNS), and rescue N strategy (RNS).


On-Farm Corn Population Trials, Jim Fawcett, Lyle Rossiter, Wayne Roush, Zack Koopman Jan 2015

On-Farm Corn Population Trials, Jim Fawcett, Lyle Rossiter, Wayne Roush, Zack Koopman

Iowa State Research Farm Progress Reports

Farmers continue to increase corn planting populations in hopes of increasing yields. Planting too high of a population can result in increased barrenness and thus lower yields, but too low of a population also can result in lower yields. As seed prices continue to rise, it is important for farmers to find a population that maximizes both yield and profit.


Foliar Micronutrients, Growth Regulator, Lime And Calcium Applications For Alfalfa Production, Brian Lang, Kenneth Pecinovsky Jan 2015

Foliar Micronutrients, Growth Regulator, Lime And Calcium Applications For Alfalfa Production, Brian Lang, Kenneth Pecinovsky

Iowa State Research Farm Progress Reports

Persistent claims in the market place on alfalfa production requiring micronutrients, growth regulators, or high rates of calcium spurred interest from the Northeast Iowa Agricultural Experimental Association to conduct a research trial with some of these products.