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Iowa State Research Farm Progress Reports

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Full-Text Articles in Life Sciences

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.


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.


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 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 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.


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.


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.


Oat Variety Trial, Brian Lang, Kenneth Pecinovsky Jan 2015

Oat Variety Trial, Brian Lang, Kenneth Pecinovsky

Iowa State Research Farm Progress Reports

Oats are a major spring-sown, small grain crop in Iowa. It can be used for grain and straw production, as a companion crop to establish hay and pastures, or for early-season forage as hay or haylage. Because oats mature in late July to early August, it allows for cropping options for the remainder of the season including establishment of a perennial forage or cover crop, and timely window for a mid-season animal manure application.


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 ...


2014 Home Demonstration Garden, Cynthia Haynes, Denny Schrock, Bryn Takle Jan 2015

2014 Home Demonstration Garden, Cynthia Haynes, Denny Schrock, Bryn Takle

Iowa State Research Farm Progress Reports

The 2014 Home Demonstration Gardens were divided into four quadrants, each with a different theme. Impatiens and Zinnia varieties were showcased in the first quadrant. The New Cultivar Garden displayed a variety of garden plants new to the public, and the Purple Garden was dominated with purple vegetables. The final quadrant was used to create a raspberry and blackberry plot at each farm as a feature of the 2015 garden.


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.


Summer Cover Crop Influence On Fall Vegetable Production, Ray Kruse, Ajay Nair Jan 2015

Summer Cover Crop Influence On Fall Vegetable Production, Ray Kruse, Ajay Nair

Iowa State Research Farm Progress Reports

One of the major challenges confronting vegetable growers is to manage weeds in a sustainable way. Herbicides often are the primary tools to manage weeds but growers are interested in utilizing sustainable and environmentally conscious tools for weed management. Cover crops are gaining popularity and recognition as a tool that can manage weeds, build organic matter, suppress erosion, and improve soil quality and health. The goal of this project was to evaluate four cover crops for weed suppression and their effects on yields of fall vegetables. The four cover crops studied were buckwheat (coolseason broadleaf), cowpea (warm-season broadleaf), oats (cool-season ...


On-Farm Corn Planter Trials, Jim Fawcett, H. Mark Hanna, Josh Sievers, Zack Koopman Jan 2015

On-Farm Corn Planter Trials, Jim Fawcett, H. Mark Hanna, Josh Sievers, Zack Koopman

Iowa State Research Farm Progress Reports

Corn planting is one of the most critical operations of the season. Correct seed-soil contact is important in order to optimize yields.


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 ...


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.


Ntep Perennial Ryegrass Study 2014, Nick Christians, Dan Strey, Ryan Adams Jan 2015

Ntep Perennial Ryegrass Study 2014, Nick Christians, Dan Strey, 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 established in September 2010 as part of the NTEP program. It contains 88 perennial ryegrass cultivars.


Bok Choy Cultivar Trial For Spring High Tunnel Production, Ajay Nair, Dana Jokela, Ray Kruse, Jennifer Tillman Jan 2015

Bok Choy Cultivar Trial For Spring High Tunnel Production, Ajay Nair, Dana Jokela, Ray Kruse, Jennifer Tillman

Iowa State Research Farm Progress Reports

Bok choy, also known as pak choy or pac choi, is a leafy vegetable that belongs to the mustard family. It is commonly referred to as ‘chinese cabbage.’ Bok choy is a non-heading form of Chinese cabbage and has thick white or pale green leafstalks (petioles). Leaves are dark green in color but there are cultivars with red leaves as well. Chinese cabbage is a coolseason annual vegetable and is grown by a number of vegetable growers in the state. The crop grows best with short days and moderate to cool temperatures (60 to 70° F mean temperature). Higher temperatures ...


Horticulture Research Station Summary, Nick Howell Jan 2015

Horticulture Research Station Summary, Nick Howell

Iowa State Research Farm Progress Reports

Contains the Farm and Weather Summary for the Horticulture Research Station.


Testing A Warning System For Anthracnose Fruit Rot On Day-Neutral Strawberry–Year 4, Xiaoyu Zhang, Jean Batzer, Mark Gleason Jan 2015

Testing A Warning System For Anthracnose Fruit Rot On Day-Neutral Strawberry–Year 4, Xiaoyu Zhang, Jean Batzer, Mark Gleason

Iowa State Research Farm Progress Reports

Anthracnose fruit rot (AFR) of strawberry is considered to be caused by three Colletotrichum spp. In the Midwest, however, only Colletotrichum acutatum is found. This pathogen can attach itself to healthy plants and spread throughout the field without causing symptoms on the foliage. When fruit begins to ripen and weather conditions are rainy and warm, AFR can suddenly cause large sunken lesions on the fruit. To protect against AFR where it has occurred in the past, growers need to spray every 7 to 10 days beginning at the start of bloom until harvest.


Organic Practices For The Production Of Muskmelon, Theodora Netza, Jean Batzer, Mark Gleason Jan 2015

Organic Practices For The Production Of Muskmelon, Theodora Netza, Jean Batzer, Mark Gleason

Iowa State Research Farm Progress Reports

Cucurbit crops, especially muskmelon, are difficult to grow due to bacterial wilt (Erwinia tracheiphila). This disease is vectored by the cucumber beetle, both spotted and striped. The highest risk period for disease infection is early in the season when adult beetles emerge from overwintering in the ground and begin feeding on young cucurbit plants.


Ntep Turf Type Tall Fescue Study 2014, Dan Strey, Nick Christians, Ryan Adams Jan 2015

Ntep Turf Type Tall Fescue 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 established in September 2012 as a part of the NTEP program. This is the second year data have been collected on this trial. It contains 116 turf type tall fescue cultivars.


Effect Of Plastic Mulch On Sweet Potato Yield And Quality, Ajay Nair, Jennifer Tillman, Ray Kruse, Dana Jokela Jan 2015

Effect Of Plastic Mulch On Sweet Potato Yield And Quality, Ajay Nair, Jennifer Tillman, Ray Kruse, Dana Jokela

Iowa State Research Farm Progress Reports

Sweet potato, Ipomoea batatas, is a warmseason vegetable predominantly grown in the southern part of the United States. In recent years, its production region has expanded quite rapidly to various Midwestern and Eastern states.


Fall Cover Crop Influence On Spring Potato Production, Ray Kruse, Ajay Nair Jan 2015

Fall Cover Crop Influence On Spring Potato Production, Ray Kruse, Ajay Nair

Iowa State Research Farm Progress Reports

Use of cover crops is becoming a common practice among vegetable producers. Cover crops provide multiple benefits such as building of organic matter, erosion and weed suppression, nitrogen fixation, and improvement of soil health. Cereal rye is the most widely planted cover crop in Iowa, however, cover crops such as oats, oilseed radish, and clovers are gaining popularity. The goal of this project was to evaluate and study three fall-planted cover crops and their effect on spring-planted potato. The three cover crops studied were Cereal Rye, Oilseed Radish, and Crimson Clover. The control treatment for the study was a no-cover ...


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.