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Iowa State Research Farm Progress Reports

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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).


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.


Long-Term Tillage And Crop Rotation Effect On Yield And Soil Carbon, Mahdi Al-Kaisi, David Kwaw-Mensah Jan 2015

Long-Term Tillage And Crop Rotation Effect On Yield And Soil Carbon, Mahdi Al-Kaisi, David Kwaw-Mensah

Iowa State Research Farm Progress Reports

Tillage systems and crop rotation have a significant, long-term effect on soil productivity and the soil quality components of soil carbon and other soil physical, biological, and chemical properties. Additionally, soil tillage and crop rotation control weed and soilborne diseases. There is need for a well-defined, long-term tillage and crop rotation study across the different soils and climate conditions in the state. The objective of this study was to evaluate the long-term effects of different tillage systems and crop rotation on soil productivity and quality.


Ne-1020 Cold Hardy Wine Grape Cultivar Trial, Gail Nonnecke, Paul Domoto, Diana Cochran Jan 2015

Ne-1020 Cold Hardy Wine Grape Cultivar Trial, Gail Nonnecke, Paul Domoto, Diana Cochran

Iowa State Research Farm Progress Reports

In conjunction with the Northeast Regional Research project NE-1020 “Multi-state evaluation of wine grape cultivars and clones,” Iowa State University established a cold hardy wine grape cultivar trial in 2008 at the ISU Horticulture Research Station (HRS), Ames, Iowa, and Tabor Home Vineyards and Winery (THV), Baldwin, Iowa. The Iowa trials are considered as having a “very cold” dormant season and a “warm” growing season, and evaluate the performance of Corot Noir, La Crescent, Marquette, Petit Ami™, NY95.0301-01 (Arandell), MN1189, MN1200, MN1220, MN1235, MN1258 with Frontenac, and St. Croix serving as controls. Selection NY95.0300-01 was shipped by mistake ...


On-Farm Corn Rootworm Trials, Jim Fawcett, Zack Koopman, Wayne Roush, Josh Sievers Jan 2015

On-Farm Corn Rootworm Trials, Jim Fawcett, Zack Koopman, Wayne Roush, Josh Sievers

Iowa State Research Farm Progress Reports

There are several methods to manage corn rootworms, including crop rotation, rootworm insecticides, and corn rootworm (CRW) transgenic traits. The use of CRW transgenic traits in corn hybrids has allowed farmers to manage CRW without using soil-applied insecticides. However, rootworm populations resistant to the transgenic traits have been confirmed in Iowa, leading some farmers to see if there is an economic return by adding an insecticide when planting CRW-Bt corn. There also are several transgenic traits now available for corn rootworm control on the market. On-farm trials allow farmers to see how these traits perform on their farms in side-by-side ...


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 droughttolerant 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.


Corn And Soybean Yield Response To Micronutrients, Antonio Mallarino, Joshua Enderson, Ryan Oltmans, Mazhar Haq, Josh Sievers Jan 2015

Corn And Soybean Yield Response To Micronutrients, Antonio Mallarino, Joshua Enderson, Ryan Oltmans, Mazhar Haq, Josh Sievers

Iowa State Research Farm Progress Reports

Micronutrients are essential for crop growth, although they are needed in very small amounts. Prior research in Iowa and neighboring states had shown 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, conducted at this farm from 2012 through 2014. The micronutrients evaluated were boron (B), copper (Cu), manganese (Mn), and zinc (Zn).


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).


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.


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.


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 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.


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.


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).


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"


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

Diesel Fuel Consumption During Field 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 or monitoring tractor tire inflation pressures can reduce diesel fuel consumption for row crop production. 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 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.


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.


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 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.


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).


Evaluation Of Herbicide Programs For Liberty Link Sweet Corn Hybrids, Vince Lawson Jan 2015

Evaluation Of Herbicide Programs For Liberty Link Sweet Corn Hybrids, Vince Lawson

Iowa State Research Farm Progress Reports

The recent introduction and availability of Liberty Link sweet corn hybrids provides growers with new options for postemergence weed control. The Liberty Link technology utilizes specially developed hybrids that are tolerant to Liberty 280 SL (glufosinate), a foliar applied, broad-spectrum herbicide with no residual control. The objective of this study was to evaluate and identify the best strategies for using Liberty 280 SL in a sweet corn weed management program.


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.


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.


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 Commercial Varieties In The Northern United States–Soybean Sudden Death Syndrome Commercial Variety Test, Silvia Cianzio, Peter Lundeen, Ryan Budnik, Greg Gebhart Jan 2015

Evaluation Of Commercial Varieties In The Northern United States–Soybean Sudden Death Syndrome Commercial Variety Test, Silvia Cianzio, Peter Lundeen, Ryan Budnik, Greg Gebhart

Iowa State Research Farm Progress Reports

Soybean sudden death syndrome (SDS) is a fungal disease causing foliar necrosis and early leaf drop. SDS can be a significant factor in soybean yield loss and has been found in fields across Iowa. The fungus is a good saprophyte and can grow well on plant debris in the field. The disease often is worse following corn. Although there is no complete resistance to SDS available in soybean, disease resistance is an important part of SDS disease management.


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 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.


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

Diesel Fuel Consumption During Field 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 or reducing tillage depths can reduce diesel fuel consumption for row crop production. This study is being conducted over multiple years to measure the effects of energy management techniques on tractor fuel consumption during spring and fall field operations.