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Herbicide Site Of Actions And Potential Damage To Zea Mays And Glycine Max., Justin Friedrich Jan 2020

Herbicide Site Of Actions And Potential Damage To Zea Mays And Glycine Max., Justin Friedrich

Creative Components

With the development of 2,4-D in the 1940s, farmers were able to selectively kill broadleaves in corn (Zea mays). 2,4-D was an effective and powerful tool that allowed farmers to reduce the time spent cultivating cornfields. The development of herbicides allowed farms to increase in size due to the reduction in the time spent interrow-cultivating. Monsanto’s introduction of glyphosate-resistant (Roundup Ready) soybean (Glycine max) in 1996 continued the expansion of farm size. Glyphosate-resistant crops allowed farmers to adopt a “spray and forget” weed management program that was widely adopted. The simplified weed management programs were successful until ...


A Comparison Of March And April Soybean Planting Dates In South-Central Illinois, Nicholas Patrick Marley Jan 2019

A Comparison Of March And April Soybean Planting Dates In South-Central Illinois, Nicholas Patrick Marley

Creative Components

One of the biggest issues with ultra-early planting of soybean [Glycine max (L.) Merr.] is the lack of research that has been conducted. This study is designed to increase the knowledge base of soybean planting dates by looking at ultra-early (March) versus early (April) planted soybean in south-central Illinois. Field research was conducted in two fields, near Morrisonville, IL over the 2017 and 2018 growing season. In 2017, the March planted soybean required 19 days to gain 121 GDD for emergence to start. Compared to the April planting date where emergence was in 7 days with 123 GDD accumulation. In ...


The Influence Of Plant Growth Regulators On Flowering, Pod Set, Seed Size, And Seed Yield In Soybean, Matthew Wetterling Jan 2019

The Influence Of Plant Growth Regulators On Flowering, Pod Set, Seed Size, And Seed Yield In Soybean, Matthew Wetterling

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No abstract provided.


Drought Tolerance In Soybean: Methods For Improvement, Emily Thorp Jan 2019

Drought Tolerance In Soybean: Methods For Improvement, Emily Thorp

Creative Components

As opposed to the past, plant breeders today have access to far greater technology, and far greater obstacles to overcome. One of those challenges is the need for drought tolerance in crops such as soybeans. Soybeans are a major crop, affected by drought due to a lack of tolerance traits in cultivars grown today. Drought tolerant soybeans are important globally, because soybeans are grown in many countries around the world where yield losses from drought are frequent. Therefore, it is essential for farmers to make changes to their practices to help their crops tolerate or avoid drought, and breeding programs ...


Evaluation Of Soybean Grain Yield As Influenced By Soybean Seeding Rate And Fomesafen Herbicide, Paul Parcher Jan 2018

Evaluation Of Soybean Grain Yield As Influenced By Soybean Seeding Rate And Fomesafen Herbicide, Paul Parcher

Creative Components

Glyphosate (N-(phosphonomethyl)glycine) herbicide has been extensively used on several herbicide tolerant crops in the United States since the introduction of the first commercially available genetically modified glyphosate-tolerant soybean [Glycine max (L.) Merr.] seed in 1996. The launch of commercially available glyphosate-tolerant corn (Zea mays L.) seed in 1998 provided farmers in Iowa and other states, where corn and soybean are primarily grown, the ability to apply glyphosate to every acre of these crops annually.


Effects Of A Plant Growth Regulator Product On Soybean At R2-R3, Geoffrey Klumpp Jan 2018

Effects Of A Plant Growth Regulator Product On Soybean At R2-R3, Geoffrey Klumpp

Creative Components

The agricultural industry had a rapid increase in commodity prices from late in 2010 until the fall of 2014. With those higher prices, there was a niche market for added-value products brought to the market, many of which promised the local grower a five-bushel yield increase per acre on soybeans. I wanted to focus on a select group of these products, plant growth regulators (PGRs). I specifically worked with a commercial product that contained three phytohormones, cytokinin, a gibberellic acid, and an auxin. For this project, there were thirteen side-by-side trials for each of the following years, 2015, 2016, 2017 ...


Evolution Of Soybean Weed Management In The United States, Aaron Rowe Jan 2018

Evolution Of Soybean Weed Management In The United States, Aaron Rowe

Creative Components

Weeds have been an unwanted nuisance since the beginning of agriculture. The processes and technologies utilized to manage this yield limiting problem have evolved over time. Soybean [Glycine max (L.) Merr.] production in the United States has experienced all of the major agriculture revolutions. This has included horse-drawn field implements, tractor power implementation, chemical era, and the most recent era of biotechnology. There has been a continuous gain in efficiencies with the discovery and introduction of new technologies to manage weeds in soybeans. A period of rapid discovery and introduction of new and novel herbicide sites of action (SOA) with ...