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Iowa State Research Farm Progress Reports

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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.


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.


On-Farm Corn And Soybean Management Trials, Jim Fawcett, Josh Sievers, Wayne Roush Jan 2015

On-Farm Corn And Soybean Management Trials, Jim Fawcett, Josh Sievers, Wayne Roush

Iowa State Research Farm Progress Reports

Farmers are faced with many decisions in managing corn and soybeans as new technologies are introduced, such as drought-tolerant corn hybrids, air reels for combines, and land-rolling equipment. Land rolling is the practice of pulling a large, heavy roller across soybean fields in order to push down rocks, smooth the surface of the field, and help break up residue. The purpose is to protect harvest equipment that could be vulnerable to rocks and corn roots. Yields are expected to improve by creating a more uniform harvest.


Diesel Fuel Consumption During Tractor Operations, H. Mark Hanna, Dana Schweitzer Jan 2015

Diesel Fuel Consumption During Tractor Operations, H. Mark Hanna, Dana Schweitzer

Iowa State Research Farm Progress Reports

Direct energy expenses (diesel, gasoline, propane, electricity) total more than $1 billion annually for Iowa’s farmers. Day-to-day farm management techniques such as adjusting tractor gear and throttle settings, making use of front-wheel-drive, and other strategies can reduce diesel fuel consumption for row crop production and general tractor operations. This study is being conducted over multiple years to measure the effects of energy management techniques on tractor fuel consumption during field operations.


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.


Update: Isu Farm Network, Wayne Roush Jan 2015

Update: Isu Farm Network, Wayne Roush

Iowa State Research Farm Progress Reports

Since its inception in 1946, Iowa State University’s (ISU) Western Research Farm (WRF) has fulfilled its original stated objective of “careful research giving definite answers to specific problems.” In continuing with that tradition, the WRF joined the Onfarm Research Network of the ISU Corn and Soybean Initiative (CSI) and started conducting on-farm trials with participating local producers during the 2010 growing season.


Western Research Farm Summary, Wayne Roush Jan 2015

Western Research Farm Summary, Wayne Roush

Iowa State Research Farm Progress Reports

Contains the Farm Summary for the Western Research and Demonstration Farm.


Weather And Growing Season Summary, 2014, Chris Beedle Jan 2015

Weather And Growing Season Summary, 2014, Chris Beedle

Iowa State Research Farm Progress Reports

Cool and wet seemed to be the rule for most of 2014, with several weather records broken over the course of the year.


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).


Conservation Tillage Study, Greg Brenneman, Myron Rees Jan 2015

Conservation Tillage Study, Greg Brenneman, Myron Rees

Iowa State Research Farm Progress Reports

The project goal was 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. These plots were started in 1990 and have continued to the present.


Impact Of Drainage Water Management On Crop Yield, Drainage Volume, And Nitrate Loss, Linda Schott, Matt Helmers, Carl Pederson, Greg Brenneman, Myron Rees Jan 2015

Impact Of Drainage Water Management On Crop Yield, Drainage Volume, And Nitrate Loss, Linda Schott, Matt Helmers, Carl Pederson, Greg Brenneman, Myron Rees

Iowa State Research Farm Progress Reports

The objectives of this study were to determine the impact of shallow, controlled, conventional, and no drainage on crop yields, subsurface drainage volumes, and nitrate loss through subsurface drainage. This research investigates whether drainage water management reduces nitrate loadings to downstream surface waters.


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).


Effectiveness Of Foliar Fungicides By Timing On Northern Leaf Blight On Hybrid Corn In Southeast Iowa, Alison Robertson, Myron Rees Jan 2015

Effectiveness Of Foliar Fungicides By Timing On Northern Leaf Blight On Hybrid Corn In Southeast Iowa, Alison Robertson, Myron Rees

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.


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).


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).


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 Southeast Iowa, Daren Mueller, Stith Wiggs, Warren Pierson Jan 2015

Evaluation Of Foliar Fungicides And Insecticides On Soybeans In Southeast 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 Corn Fungicide Trials, Jim Fawcett, Lance Miller, Lyle Rossiter, Josh Sievers Jan 2015

On-Farm Corn Fungicide Trials, Jim Fawcett, Lance Miller, Lyle Rossiter, Josh Sievers

Iowa State Research Farm Progress Reports

An application of fungicide to corn has become a popular input with many farmers in Iowa. The effect of fungicide on corn yield, however, can vary from year to year. Environmental conditions, such as rainfall and temperature, likely are the main factors for differences in how a fungicide affects corn yield because these factors influence disease development and crop growth. Because environmental conditions vary from one year to the next, it is difficult to predict how and when to use a fungicide. Compilation of trial data over many years could help identify factors associated with fungicide response in corn.


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.


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 ...


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 field to-field.


On-Farm Corn Fungicide Trials, Jim Fawcett, Lance Miller, Lyle Rossiter, Josh Sievers Jan 2015

On-Farm Corn Fungicide Trials, Jim Fawcett, Lance Miller, Lyle Rossiter, Josh Sievers

Iowa State Research Farm Progress Reports

An application of fungicide to corn has become a popular input with many farmers in Iowa. The effect of fungicide on corn yield, however, can vary from year to year. Environmental conditions, such as rainfall and temperature, likely are the main factors for differences in how a fungicide affects corn yield because these factors influence disease development and crop growth. Because environmental conditions vary from one year to the next, it is difficult to predict how and when to use a fungicide. Compilation of trial data over many years could help identify factors associated with fungicide response in corn.


Impact Of 4r Management On Crop Production And Nitrate-Nitrogen Loss In Tile Drainage, Matthew Helmers, John Sawyer, Josh Sievers Jan 2015

Impact Of 4r Management On Crop Production And Nitrate-Nitrogen Loss In Tile Drainage, Matthew Helmers, John Sawyer, Josh Sievers

Iowa State Research Farm Progress Reports

Corn Belt corn and soybean producers are increasingly challenged to maximize crop production while addressing the contributions farm practices make to Gulf hypoxia. Based on the need for nitrate-N reductions to meet water quality goals, new management practices are needed to reduce nitrate-N losses at minimal cost and maximum economic benefits. This three-year field research and demonstration project is evaluating various promising N management methods and technologies by documenting the nitrate-N export and crop yield from various systems.


Developing Hybrid Aspen As A Complementary Energy Crop, Richard Hall, Jesse Randall Jan 2015

Developing Hybrid Aspen As A Complementary Energy Crop, Richard Hall, Jesse Randall

Iowa State Research Farm Progress Reports

Our objective is to develop hybrid aspens as an energy crop that would fit as one part of systems for biomass energy production in the Corn Belt. Most liquid fuels are derived from biomass from cornstarch and cellulose. An additional perennial energy crop coming from in-field buffer strips and windbreaks could contribute to soil conservation, improvement in water quality, year-round harvesting with reduced need for storage of feedstock, and reduced energy and financial inputs. Wood biomass has about twice the energy density and therefore can be economically transported further to a conversion site. Woody biomass is the preferred feedstock for ...


Northwest And Allee Farm Summaries, Josh Sievers, Lyle Rossiter Jan 2015

Northwest And Allee Farm Summaries, Josh Sievers, Lyle Rossiter

Iowa State Research Farm Progress Reports

Contains "Northwest Research Farm Summary" and "Allee Research Farm Summary"


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.


On-Farm Soybean Fertilizer Trials, Jim Fawcett, Antonio Mallarino, Josh Sievers, Micah Smidt, Matt Schnabel, Lance Miller Jan 2015

On-Farm Soybean Fertilizer Trials, Jim Fawcett, Antonio Mallarino, Josh Sievers, Micah Smidt, Matt Schnabel, Lance Miller

Iowa State Research Farm Progress Reports

All cropping systems require fertilizer inputs in order to maintain crop yields. Farmers continue to search for ways to increase soybean yields, such as applying micronutrients and using foliar applications of fertilizer. Although micronutrients are just as essential to plant growth as macronutrients, past research has indicated most Iowa soils can supply the micronutrient needs of soybeans.


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.


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.


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.