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Hundreds Of Scn-Resistant Soybean Varieties Available For 2014, Gregory L. Tylka 2014 Iowa State University

Hundreds Of Scn-Resistant Soybean Varieties Available For 2014, Gregory L. Tylka

Integrated Crop Management News

The soybean cyst nematode (SCN) is a serious yield-reducing pathogen of soybeans. It is present in many fields throughout the Midwest, wherever soybeans are grown.

To produce profitable soybean yields in fields infested with SCN, farmers should grow SCN-resistant soybean varieties. SCN-resistant soybeans can produce high yields while keeping SCN population densities from increasing.


Scout Crops For Aphids, Erin W. Hodgson 2014 Iowa State University

Scout Crops For Aphids, Erin W. Hodgson

Integrated Crop Management News

Earlier this summer, I found aphids in V4 corn in central Iowa. This early establishment is unusual because most aphids that feed on corn have to migrate from the southern United States every summer. My lab also found soybean aphid in vegetative soybean at most of the Iowa State University Research Farms in June. Although they can overwinter in Iowa, larger colonies have not recently formed until after bloom. Pea aphids have also been reported in alfalfa in northeastern Iowa. All these aphid detections prompted me to summarize a few scouting reminders and treatment thresholds for aphids in field crops.


Terminating Cover Crops, Robert G. Hartzler 2014 Iowa State University

Terminating Cover Crops, Robert G. Hartzler

Integrated Crop Management News

There is an increased interest in the use of cover crops due to the many agronomic and environmental benefits they offer. An important consideration when incorporating cover crops into the system is their termination. Failure to completely control cover crops at planting results in them acting as a weed and competing with the crop. Several factors influence the effectiveness of burndown treatments, including the cover crop species and growth stage, the herbicides and rates used, application parameters and environment.


Start Scouting For Alfalfa Weevil With Updated Economic Thresholds, Erin W. Hodgson 2014 Iowa State University

Start Scouting For Alfalfa Weevil With Updated Economic Thresholds, Erin W. Hodgson

Integrated Crop Management News

Even though it was an extremely cold winter, some alfalfa weevil adults are expected to survive. Adults will begin moving as soon as temperatures exceed 48°F and begin laying eggs in alfalfa. Alfalfa weevil eggs develop based on temperature, or accumulating degree days, and hatching can start around 200-300 degree days. Start scouting alfalfa fields south of Interstate 80 at 200 degree days and fields north of Interstate 80 at 250 degree days. Based on accumulated temperatures since January, weevils are active in southern Iowa now and scouting to monitor for larval activity should start in southwestern Iowa this ...


How To Teach A Complex Discipline In A Changing Learning Environment: The Example Of Sustainability, 2014 Rochester Institute of Technology

How To Teach A Complex Discipline In A Changing Learning Environment: The Example Of Sustainability

Journal of Environmental Sustainability

In the “electronic age” our teaching profession is faced with new challenges. Normally, educators tend to spend a significant amount of time updating the content of what they teach. They spend less time changing their methods of teaching. Today, this no longer works. A lot of content is delivered through Google and similar partners and what is now critical is that we make the necessary changes in our teaching methods to reflect this and to have some impact on our audiences.


Predicted Mortality Of Bean Leaf Beetle Is Highest In 25 Years, Erin W. Hodgson, Adam J. Sisson 2014 Iowa State University

Predicted Mortality Of Bean Leaf Beetle Is Highest In 25 Years, Erin W. Hodgson, Adam J. Sisson

Integrated Crop Management News

Bean leaf beetle adults are susceptible to cold weather and most will die when the air temperature falls below -10°C. However, they have adapted to winter by protecting themselves under plant debris and loose soil. An overwintering survival model was developed by Lam and Pedigo from Iowa State University in 2000, and is helpful for predicting winter mortality based on accumulating subfreezing temperatures. Predicted mortality rates in Iowa were extremely high during the 2013-2014 winter and ranged from 89-99 percent (Fig. 1). Not surprisingly, central and northern Iowa experienced colder temperatures, and most of the bean leaf beetle adults ...


Myths And Facts About Residue Breakdown, Mahdi Al-Kaisi 2014 Iowa State University

Myths And Facts About Residue Breakdown, Mahdi Al-Kaisi

Integrated Crop Management News

Crop residue serves an important role in physically protecting soil by preventing soil erosion during rain events or high winds. Also, crop residue plays a significant role in enhancing the soil biological community by providing sources of organic carbon and nitrogen for its energy or food needs. To understand how residue decomposes or breaks down, we need to understand the processes and mechanisms that include both biological and chemical activities influenced by environmental and soil conditions, namely air and soil temperatures, soil moisture availability, soil pH, oxygen, and type of microbial community. The composition of crop residue includes lignin, cellulose ...


Soil Penetromter, David A. Bainbridge 2014 SelectedWorks

Soil Penetromter, David A. Bainbridge

David A Bainbridge

A simple easy to build impact soil penetrometer can provide very useful information on soil strength. This can be very important for restoration planning and management of soils in agriculture and forestry.


Soil Solarization, David A. Bainbridge 2014 SelectedWorks

Soil Solarization, David A. Bainbridge

David A Bainbridge

Soil solarization makes use of the energy of the sun to heat soil and kill weeds and pathogens. Single, double, or bubblepack plastic and be used to increase soil temperature. Multiple growth benefits are often realized.


Compressed Spring Workload In 2014? What Are Nitrogen Application Options?, John E. Sawyer 2014 Iowa State University

Compressed Spring Workload In 2014? What Are Nitrogen Application Options?, John E. Sawyer

Integrated Crop Management News

It was a long winter, with conditions this spring suitable for field work perhaps being later than normal. Also, some areas of Iowa did not have the typical amount of fall anhydrous ammonia applied. Questions are already coming about options for nitrogen (N) fertilization this spring, and the usual question should time be taken to get N applied or plant corn and apply N later.


2014 Pesticide Safety Review, Martha Sylvia 2014 University of Massachusetts - Amherst

2014 Pesticide Safety Review, Martha Sylvia

Cranberry Station Extension meetings

No abstract provided.


2014 Pesticide Safety: Moss, Pi, Poverty Grass, Katherine Ghantous 2014 University of Massachusetts - Amherst

2014 Pesticide Safety: Moss, Pi, Poverty Grass, Katherine Ghantous

Cranberry Station Extension meetings

No abstract provided.


2014 Pesticide Safety: Lw Frost Cost, Carolyn J. DeMoranville 2014 University of Massachusetts - Amherst

2014 Pesticide Safety: Lw Frost Cost, Carolyn J. Demoranville

Cranberry Station Extension meetings

No abstract provided.


2014 Pesticide Safety: Herbicides, Hilary A. Sandler 2014 University of Massachusetts - Amherst

2014 Pesticide Safety: Herbicides, Hilary A. Sandler

Cranberry Station Extension meetings

No abstract provided.


2014 Pesticide Safety: Generics, Martha Sylvia 2014 University of Massachusetts - Amherst

2014 Pesticide Safety: Generics, Martha Sylvia

Cranberry Station Extension meetings

No abstract provided.


2014 Pesticide Safety: Fruit Rot Mgmt, Martha Sylvia, Peter Oudermans 2014 University of Massachusetts - Amherst

2014 Pesticide Safety: Fruit Rot Mgmt, Martha Sylvia, Peter Oudermans

Cranberry Station Extension meetings

No abstract provided.


2014 Pesticide Safety: Chemigation, Stearns Irrigation 2014 University of Massachusetts - Amherst

2014 Pesticide Safety: Chemigation, Stearns Irrigation

Cranberry Station Extension meetings

No abstract provided.


2014 Pesticide Safety: Cranberry Pollinator Update, Anne Averill 2014 University of Massachusetts - Amherst

2014 Pesticide Safety: Cranberry Pollinator Update, Anne Averill

Cranberry Station Extension meetings

No abstract provided.


Water For Electricity In The Upper Savannah Basin: Impacts On Freshwater Mussels, Alan Johnson, Snehal Mhatre 2014 Clemson University

Water For Electricity In The Upper Savannah Basin: Impacts On Freshwater Mussels, Alan Johnson, Snehal Mhatre

Graduate Research and Discovery Symposium (GRADS)

The water resources of the Upper Savannah River Basin are subjected to extensive water withdrawals for production of electricity for the region. The use of Savannah River Basin water resources for electricity production and the associated impact on reservoir levels, streamflows, and thermal regimes is in conflict with the requirements of in-stream biota particularly freshwater mussels. The Savannah River Basin contains atleast 26 unionid species, most of which are listed as endangered, threatened, or of special concern at the state level. Populations of these species have experienced significant declines and extirpations in the recent decades. Of these unionid species, brook ...


Graduate Students Research Presentation Series, Saul Abarca 2014 Iowa State University

Graduate Students Research Presentation Series, Saul Abarca

Latin American Urbanism Symposium

"Changing roles of market, state and civil society: the case of coffee cooperatives and small farmers in Mexico"

Abstract

In this paper, we investigate how civil society organizations, in particular coffee cooperatives, are responding to the growth of market power and the decline of government’s role in the coffee regime. At the international and national (Mexican) levels a strong neoliberal agenda skewed towards the freedom of the market has changed the relationships with the state and civil society. The strong role of the market, and the volatility of international coffee prices as well as the lack of assertive agricultural ...


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