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Iowa State University

Plant Sciences

Farm Progress Reports

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On-Farm Corn And Soybean Fertilizer Demonstration Trials, Jim Fawcett, Andrew Weaver, Jim Rogers, Cody Schneider, Tyler Mitchell, Chris Beedle, Lyle Rossiter, Josh Michel Jan 2018

On-Farm Corn And Soybean Fertilizer Demonstration Trials, Jim Fawcett, Andrew Weaver, Jim Rogers, Cody Schneider, Tyler Mitchell, Chris Beedle, Lyle Rossiter, Josh Michel

Farm Progress Reports

All cropping systems require nutrient inputs to maintain crop yields. However, excess fertilizer, especially nitrogen (N) and phosphorus, can increase problems with water quality. It is important for farmers to use the appropriate rates and methods of fertilizer application to optimize yields and minimize the impact on the environment. The purpose of these trials was to investigate the effect of various fertilizer practices on crop yield.


A Brief History Of The Isu Horticulture Research Station: A Review And Timeline 1967-2017, Mark Honeyman, Jeff Iles Jan 2018

A Brief History Of The Isu Horticulture Research Station: A Review And Timeline 1967-2017, Mark Honeyman, Jeff Iles

Farm Progress Reports

On September 16, 2017, the ISU Horticulture Research Station celebrated 50 years of research, teaching, and extension at its current location, seven miles northeast of campus. The station, opened in 1967, is home to a wide variety of projects and activities focused around field-scale horticultural research, teaching, and extension programs.


Enhancing The Value Of Cover Crops Through Utilization By Beef Stocker Cattle: Progress Report (Year 2), Erika Lundy, Rebecca Vittetoe, Joel Dejong, Beth Doran, Paul Kassel, Dan Loy, Joe Sellers, Mike Witt Jan 2018

Enhancing The Value Of Cover Crops Through Utilization By Beef Stocker Cattle: Progress Report (Year 2), Erika Lundy, Rebecca Vittetoe, Joel Dejong, Beth Doran, Paul Kassel, Dan Loy, Joe Sellers, Mike Witt

Farm Progress Reports

Cover crops are an important component of the Iowa Nutrient Reduction Strategy to improve Iowa’s water quality. To meet the goal of a 45 percent reduction in the total nitrogen and phosphorus loads, it is estimated the total number of acres planted to cover crops will need to be at a minimum of four million acres or equivalent to about 20 percent of Iowa’s row crop acres. This implies millions of acres may be seasonally available for grazing.


Forecasting And Assessment Of Plant Growth, Soil Water-Nitrogen, And Grain Yield For Central Iowa, Sotirios Archontoulis, Mark Licht, Ashlyn Kessler Jan 2018

Forecasting And Assessment Of Plant Growth, Soil Water-Nitrogen, And Grain Yield For Central Iowa, Sotirios Archontoulis, Mark Licht, Ashlyn Kessler

Farm Progress Reports

In 2017, the Forecast and Assessment of Cropping sysTemS (FACTS) project was replicated to achieve the objective of forecasting and evaluating in-season soil-crop dynamics. This concept was initiated to help farmers and agronomists make in-season management decisions, in addition to identifying the management practices that could have been changed to improve grain yields, net profits, and also reduce environmental impacts.


Corn And Soybean Response To Humic Product Applications On The Clarion-Nicollet-Webster Soil Association, Dan Olk, Dana Dinnes Jan 2018

Corn And Soybean Response To Humic Product Applications On The Clarion-Nicollet-Webster Soil Association, Dan Olk, Dana Dinnes

Farm Progress Reports

Humic products have been used as an amendment for crop yield enhancement for nearly a century. However, very little field research has been conducted with these products on university research farm settings in the U.S. Midwest. One of the issues that has hampered scientific progress of humic products has been their inconsistent crop responses. There are a myriad of possible reasons for crop response variability, some being environmental, some could involve variability in the humic product’s integrity. The objective of this study was to examine corn and soybean growth and production responses to a humic product across enough ...


On-Farm Sulfur Fertilization Of Alfalfaand Corn Demonstration Trials, Jim Fawcett, Jim Rogers, Zack Koopman, Tyler Mitchell, Matthew Schnable, John E. Sawyer Jan 2018

On-Farm Sulfur Fertilization Of Alfalfaand Corn Demonstration Trials, Jim Fawcett, Jim Rogers, Zack Koopman, Tyler Mitchell, Matthew Schnable, John E. Sawyer

Farm Progress Reports

In the past several years, sulfur (S) deficiency has been showing up more frequently in Iowa fields. Large yield response has especially occurred in corn and alfalfa fields in northeast Iowa. The increase in S response 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, higher crop yields, and less widespread use of manure. Sulfur fertilizer applications can offer yield increases where S deficiencies are present. The objective of these trials was to evaluate potential for S deficiency and yield response in corn and ...


Evaluation Of Foliar Fungicides On Soybeans In South Central Iowa, Daren Mueller, Yuba Kandel, Stith Wiggs Jan 2018

Evaluation Of Foliar Fungicides On Soybeans In South Central Iowa, Daren Mueller, Yuba Kandel, Stith Wiggs

Farm Progress Reports

Foliar fungicides were assessed on soybeans for foliar disease management and yield response across seven Iowa State University research station locations including the Northwest Farm (Sutherland), Northern Farm (Kanawha), Northeast Farm (Nashua), Central Iowa Farms (Ames), Armstrong Farm (Lewis), McNay Farm (Chariton), and Southeast Farm (Crawfordsville).


Long-Term Tillage And Crop Rotation Effects On Soil Carbon And Soil Productivity In Northwest Iowa, Mahdi Al-Kaisi, David Kwaw-Mensah Jan 2018

Long-Term Tillage And Crop Rotation Effects On Soil Carbon And Soil Productivity In Northwest Iowa, Mahdi Al-Kaisi, David Kwaw-Mensah

Farm Progress Reports

Tillage system and crop rotation systems have significant long-term effects on soil health, productivity and quality, soil carbon, and other soil physical, biological, and chemical properties. Furthermore, 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 soil types and climate conditions in the state. The objective of this study was to evaluate the long-term effects of five tillage systems and crop rotations on soil productivity and quality.


Evaluating The Effects Of Nitrogen Fertilization On Cascade Hop Yield, Diana Cochran Jan 2018

Evaluating The Effects Of Nitrogen Fertilization On Cascade Hop Yield, Diana Cochran

Farm Progress Reports

Hop production in non-traditional growing regions continues to strengthen. Areas that were once decimated by hop diseases, such as downy mildew, have reemerged and are thriving. Although climate in the North Central region still poses challenges, new developments in pesticides and cultivar selections have mitigated some of these risks.


Shockwave Aerification Performance Study, Tim Dalsgaard, Adam Thoms, Nick Christians, Ben Pease Jan 2018

Shockwave Aerification Performance Study, Tim Dalsgaard, Adam Thoms, Nick Christians, Ben Pease

Farm Progress Reports

Athletic field safety is a growing concern on all levels from young children to professional sports. Finding time to close the field to relieve compaction is often difficult, but new machines offer a potential solution. The objective of this project is to evaluate the performance of a native soil Kentucky bluegrass (Poa pratensis) athletic field under simulated traffic subjected to various aerification methods and the Imants Shockwave. Safety parameters such as surface hardness and rotational resistance were tracked throughout the season to determine if any benefits exist to athlete safety between treatments. This is the first year of a two-year ...


Impact Of Biochar And Fertility Management On Potato Production, Ajay Nair, Kristine Lang, Dominic Snyder Jan 2018

Impact Of Biochar And Fertility Management On Potato Production, Ajay Nair, Kristine Lang, Dominic Snyder

Farm Progress Reports

Biochar, a charcoal created from organic materials burned at high temperatures and low oxygen environment, when added as a soil amendment, has been shown to increase soil fertility, water holding capacity, greenhouse gas reduction, and carbon sequestration. Biochar as a biorenewable resource has the potential to positively impact several key areas of our production systems such as soil organic matter and quality, water quality, crop growth, yield, and productivity. Adding biochar to a soil is an irreversible decision, so understanding its long-term impacts is essential for growers to make informed decisions. In the United States, most biochar research has been ...


Long-Term Tillage And Crop Rotation Effect On Yield And Soil Carbon In Northern Iowa, Mahdi Al-Kaisi, David Kwaw-Mensah Jan 2018

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

Farm Progress Reports

Tillage systems and crop rotation systems have significant long-term effects 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 weeds and soilborne diseases. There is need for a well-defined, long-term tillage and crop rotation study across the different soil types and climate conditions in the state. The objective of this study was to evaluate the long-term effects of different tillage systems and crop rotations on soil productivity and quality.


Forecast And Assessment Of Cropping Systems In Northeast Iowa, Sotirios Archontoulis, Mark Licht, Rafael Martinez-Feria Jan 2018

Forecast And Assessment Of Cropping Systems In Northeast Iowa, Sotirios Archontoulis, Mark Licht, Rafael Martinez-Feria

Farm Progress Reports

In 2017, the Forecast and Assessment of Cropping sysTemS (FACTS) project continued with the objective of forecasting in-season soil water-nitrogen dynamics, in-season plant growth, and end-of-season grain yields. This concept was initiated to help farmers and agronomists make in-season management decisions, plus look back on the growing season to see what management practices could have been changed to improve grain yields and net profits, but also reduce nitrogen loss.


Ntep Perennial Ryegrass Study, Nick Christians, Adam Thoms, Ben Pease, Isaac Mertz Jan 2018

Ntep Perennial Ryegrass Study, Nick Christians, Adam Thoms, Ben Pease, Isaac Mertz

Farm Progress Reports

The National Turfgrass Evaluation Program (NTEP) conducts trials throughout the United States on turfgrass adaptation. This trial was established in September 2016 as part of the NTEP program. It contains 114 perennial ryegrass cultivars.


Preemergence Plus Postemergence Herbicide Programs In Corn, Micheal Owen, Damian Franzenburg, James Lee, Iththiphonh Macvilay Jan 2018

Preemergence Plus Postemergence Herbicide Programs In Corn, Micheal Owen, Damian Franzenburg, James Lee, Iththiphonh Macvilay

Farm Progress Reports

The purpose of this study was to evaluate crop injury and weed control for corn herbicide programs using both preemergence and postemergence applications.


Soybean Foliar Fungicide Evaluation In Northeast Iowa, Shrishail Navi, Tra Huynh, X. B. Yang Jan 2018

Soybean Foliar Fungicide Evaluation In Northeast Iowa, Shrishail Navi, Tra Huynh, X. B. Yang

Farm Progress Reports

Sudden death syndrome (SDS) has been reported in 21 states, and the losses due to SDS were estimated at $3.06 billion for a period from 1988 to 2010. Sclerotinia stem rot or white mold (WM) is another major soilborne disease in commercial soybean production, particularly in intensive production regions of the United States, Argentina, and northern China. Its occurrence depends on various seasonal factors. White mold management measures are typically a preventive program, which includes application of fungicides and herbicides like Cobra. The objective of this study was to assess foliar applications of fungicides either alone or in combination ...


On-Farm Corn And Soybean Planter Demonstration Trials, Jim Fawcett, Andrew Weaver, Lyle Rossiter, Chris Beedle, Matthew Schnabel, Zachary A, Koopman, Cody Schneider, Tyler Mitchell Jan 2018

On-Farm Corn And Soybean Planter Demonstration Trials, Jim Fawcett, Andrew Weaver, Lyle Rossiter, Chris Beedle, Matthew Schnabel, Zachary A, Koopman, Cody Schneider, Tyler Mitchell

Farm Progress Reports

Corn and soybean planting is one of the most critical operations of the season. Operating the planter with the proper soil conditions for proper placement of the seed to obtain the correct seed-soil contact is important to optimize yields and reduce problems later in the season with plant and root growth. As corn and soybean seed prices continue to rise, and grain prices fall, it is important for farmers to find a population that maximizes both yield and profit. Planting too high of a corn population can result in increased barrenness and thus lower yields, but too low of a ...


Demonstrating Cover Crop Mixtures On Iowa Farmland: Management, Soil Health, And Water Quality Benefits, Mark Licht, Liz Juchems, Jacqueline Comito, Matthew Helmers Jan 2018

Demonstrating Cover Crop Mixtures On Iowa Farmland: Management, Soil Health, And Water Quality Benefits, Mark Licht, Liz Juchems, Jacqueline Comito, Matthew Helmers

Farm Progress Reports

Iowa landowners and farmers increasingly are seeing the value of single species cover crops. However, in Iowa and the Upper Midwest, there has been limited research on using cover crop mixtures. In theory, cover crop mixtures have the same advantages as diverse species ecosystems like prairies. The most important advantage would be greater and more stable total plant growth. Mixing species with complimentary features can take advantage of multiple niches and environmental conditions in space, weather, time, and seasons.


Ntep Turf-Type Tall Fescue Study, Nick Christians, Adam Thoms, Ben Pease, Isaac Mertz Jan 2018

Ntep Turf-Type Tall Fescue Study, Nick Christians, Adam Thoms, Ben Pease, Isaac Mertz

Farm Progress Reports

The National Turfgrass Evaluation Program (NTEP) conducts trials throughout the United States on turfgrass adaptation. This trial was established in September 2012 as part of the NTEP program. This is the fifth year data have been collected on this trial. It contains 116 turf-type tall fescue cultivars.


Installation And Early Data Of Saturated Buffers, Ethan Thies Jan 2018

Installation And Early Data Of Saturated Buffers, Ethan Thies

Farm Progress Reports

Two saturated buffers were installed on the Uthe Farm (Boone County) beginning fall 2016, and installation was completed spring 2017. Four field tile outlets were intercepted, and the water was redirected using control structures to a perpendicular distribution line of perforated tile. These distribution lines were placed underneath a grass buffer strip along Big Creek. Tile water from the field tile is redirected to the distribution lines, allowing water to seep into the soil beneath the grass buffer. Nitrates are removed by plants and microorganisms before the water enters Big Creek.


On-Farm Corn And Soybean Planter Demonstration Trials, Jim Fawcett, Andrew Weaver, Lyle Rossiter, Chris Beedle, Matthew Schnabel, Zachary A, Koopman, Cody Schneider, Tyler Mitchell Jan 2018

On-Farm Corn And Soybean Planter Demonstration Trials, Jim Fawcett, Andrew Weaver, Lyle Rossiter, Chris Beedle, Matthew Schnabel, Zachary A, Koopman, Cody Schneider, Tyler Mitchell

Farm Progress Reports

Corn and soybean planting is one of the most critical operations of the season. Operating the planter with the proper soil conditions for proper placement of the seed to obtain the correct seed-soil contact is important to optimize yields and reduce problems later in the season with plant and root growth. As corn and soybean seed prices continue to rise, and grain prices fall, it is important for farmers to find a population that maximizes both yield and profit. Planting too high of a corn population can result in increased barrenness and thus lower yields, but too low of a ...


Horticulture Research Station Summary, Horticulture Research Station, Nick Howell Jan 2018

Horticulture Research Station Summary, Horticulture Research Station, Nick Howell

Farm Progress Reports

In the past several years, sulfur (S) deficiency has been showing up more frequently in Iowa fields. Large yield response has especially occurred in corn and alfalfa fields in northeast Iowa. The increase in S response 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, higher crop yields, and less widespread use of manure. Sulfur fertilizer applications can offer yield increases where S deficiencies are present. The objective of these trials was to evaluate potential for S deficiency and yield response in corn and ...


On-Farm Corn And Soybean Management Demonstration Trials, Jim Fawcett, Andrew Weaver, Matthew Schnabel, Zack Koopman, Cody Schneider, Tyler Mitchell Jan 2018

On-Farm Corn And Soybean Management Demonstration Trials, Jim Fawcett, Andrew Weaver, Matthew Schnabel, Zack Koopman, Cody Schneider, Tyler Mitchell

Farm Progress Reports

Farmers are faced with many decisions in managing corn and soybean as new technologies are introduced, such as Bt corn hybrids, new pesticides, and new seed treatments. As problems with corn rootworm resistance to Bt corn continue to be found in Iowa, it is important to research methods to manage this pest. It is also important for farmers to adopt tillage practices that not only maximize profits, but also conserve the soil. The objective of these trials was to investigate what affect various corn and soybean management practices would have on grain yield.


On-Farm Corn And Soybean Variety Demonstration Trials, Jim Fawcett, Andrew Weaver, Zack Koopman, Matthew Schnabel, Jim Rogers Jan 2018

On-Farm Corn And Soybean Variety Demonstration Trials, Jim Fawcett, Andrew Weaver, Zack Koopman, Matthew Schnabel, Jim Rogers

Farm Progress Reports

Farmers are faced with corn and soybean variety selection decisions each year as new varieties are introduced, including transgenic corn hybrids with several traits for insect and herbicide resistance. Recently, soybean varieties have been introduced with tolerance to the soybean aphid. As problems with corn rootworm resistance to Bt corn continue to be found in Iowa, it is important to research methods to manage this pest. The objective of these trials was to compare corn and soybean varieties on yield and/or insect tolerance.


Tall Fescue Mowing Height Performance Under Simulated Traffic, Tim Dalsgaard, Adam Thoms, Nick Christians, Ben Pease Jan 2018

Tall Fescue Mowing Height Performance Under Simulated Traffic, Tim Dalsgaard, Adam Thoms, Nick Christians, Ben Pease

Farm Progress Reports

Tall fescue (Festuca arundinacea) requires fewer inputs than other cool season grasses such as Kentucky bluegrass. With newer turf-type tall fescue cultivars, more facilities are choosing them over Kentucky bluegrass due to better traffic and drought tolerance. The objective of this study was to determine what height of cut offers the best aesthetic quality and safety, measured by surface hardness, soil moisture, and shear vane rotational resistance. This is the first year of a two-year study.


Effects Of Wetting Agent Use To Reduce Turf Damage On Sand-Capped Athletic Fields, Ben Pease, Adam Thoms, Nick Christians Jan 2018

Effects Of Wetting Agent Use To Reduce Turf Damage On Sand-Capped Athletic Fields, Ben Pease, Adam Thoms, Nick Christians

Farm Progress Reports

Athletic field playability and safety is a growing national concern, particularly at the high school sports level. Athletic field usage rates increase each year while field maintenance budgets are stagnant, if not reduced. Many municipal and high school athletic fields endure multiple practices and games per week, despite weather-related conditions detrimental to field integrity. For example, Friday night high school games cannot be rescheduled due to a past or pending rain event. Research is needed to improve current cultural practices and to maximize playability and safety of natural grass athletic fields, especially in reference to prolonging field surface integrity throughout ...


Ag Engineering And Agronomy Farm And Central Iowa Research Farms Summary, Ag Engineering And Agronomy Farm, Central Iowa Research Farms, Mike Fiscus, Nathan Meyers Jan 2018

Ag Engineering And Agronomy Farm And Central Iowa Research Farms Summary, Ag Engineering And Agronomy Farm, Central Iowa Research Farms, Mike Fiscus, Nathan Meyers

Farm Progress Reports

No abstract provided.


Installation Costs Of Saturated Buffer And Oxbow Wetland, Ehtan Thies Jan 2018

Installation Costs Of Saturated Buffer And Oxbow Wetland, Ehtan Thies

Farm Progress Reports

In 2017, two water quality conservation projects were installed adjacent to Big Creek on the Uthe and North Reynoldson farms, Boone County, Iowa. The farms both are owned by the Committee for Agricultural Development (CAD), an ISU College of Agriculture and Life Sciences (CALS) affiliate organization.


2017 Home Demonstration Garden, Cynthia Haynes, Laura Irish Jan 2018

2017 Home Demonstration Garden, Cynthia Haynes, Laura Irish

Farm Progress Reports

There were two themes for the 2017 Home Demonstration Gardens: pantry garden and an edible flower garden. Three-quarters of the garden was planted for the pantry garden, which focused on cultivar trials and donation of produce to local food pantries. The other quarter of the garden was planted with edible flowers and new flower cultivars.


Effects Of Wetting Agent Timing On Native Soil Athletic Fields, Ben Pease, Adam Thoms, Nick Christians Jan 2018

Effects Of Wetting Agent Timing On Native Soil Athletic Fields, Ben Pease, Adam Thoms, Nick Christians

Farm Progress Reports

Athletic field playability and safety is a growing national concern, particularly at the high school sports level. Athletic field usage rates increase each year while field maintenance budgets are stagnant, if not reduced. Research is needed on improving cultural practices to maximize playability and safety of natural grass athletic fields, especially in reference to prolonging field surface integrity throughout the extended high school football season. Many athletic fields endure multiple practices and games per week. Despite weather-related conditions detrimental to field integrity, Friday night games cannot be rescheduled and practice field availability is often lacking. The objective of this trial ...