Hoegemeyer Hybrid Theory E-News

Quote of the Month

"Don't let go of your dreams and aspirations. If you do you will cease to exist."

- Henry David Thoreau

Hoegemeyer Wishes You A Safe Harvest

Fall is such a great time of the year – with combines rolling in the field and the colors changing in the leaves. It’s a time to reflect on the many blessings that we are given. We hope that your harvest season has been a safe and bountiful one for you and your family!

Goss’s Wilt – Success Stories from the field

Hoegemeyer’s corn hybrid line-up has seen some success in the field with it’s tolerance to Goss’s Wilt. Hybrid selection, tillage and crop rotation are the only practices with solid data behind them to manage Goss’s Wilt. Hoegemeyer’s product line-up have had good tolerance to Goss’s Wilt. For more information about Goss’s Wilt, check out our
» Technical Bulletin.

Gray Leaf Spot in Corn

Gray Leaf Spot (GLS) in corn was observed in many fields this year. The fungus causing GLS overwinters in and on corn debris left above and on the soil surface. In late spring, in response to warm temperatures and high humidity, GLS spores begin to develop on residues. These are blown by wind onto the lower leaves of the present season's corn plants. Usually, the initial infections occur in mid-June to late June but the disease does not begin to spread rapidly until late July and August.

In addition to the environment, GLS is influenced by plant maturity. Generally, initial symptoms do not appear widespread until around pollination, regardless of the planting date. Also, the plant’s lower or older leaves are usually the sites of initial infection. After about 2 weeks, the resulting lesions generate a new crop of spores which infect the middle and upper leaves. As plants mature, susceptibility to GLS increases. This fact, in addition to the time required for new infections to occur, partly explains the late-season appearance of GLS in some corn fields.

Potential yield losses from GLS most often range between 5 to 40 bushels/acre mainly due to leaf tissue loss. The reduction of leaf area results in sugar production loss, which translates into less grain. Extreme leaf damage can lead to premature death of plants. Premature death lowers the value of the corn crop whether it relates to grain yield, grain quality, stalk quality or if the crop was to be used for silage. As mentioned earlier, with the increased use of reduced and no-tillage practices, GLS has become a very significant problem, especially in higher humidity corn growing environments.

If Gray Leaf Spot is a potential concern for you, what are some season long precautions to consider?

Plant early if possible. Late planting dates increase the risk of greater GLS problems due to increased fungal inoculum available at earlier stages of plant maturity.
Avoid planting susceptible corn in fields prone to frequent and extended periods of dew.
Plant hybrids at recommended seeding rates to promote rapid stand establishment and optimal plant development.
Scout your fields regularly to detect GLS and assess its severity to help you make crop production decisions for the next crop.
Harvest in a timely manner to help reduce the levels of gray leaf spot-related stalk lodging.

Contact your local Hoegemeyer DSM if Gray Leaf Spot is a concern in your area this year.

CREDITS: University of Nebraska, Ohio State University, University of North Carolina

Bt Corn Rootworm Resistance Concerns

Rootworm is a growing concern in many corn growing locations. It’s important to understand the background of rootworm events when planning crop management strategy from year to year –especially if acres are corn-on-corn.

Advancements in biotechnology are classified as an event in the seed industry and are assigned an “event number”. TheYieldGard rootworm protein event is Cry3Bb1 and the Herculex rootworm protein event, which is a multiple event or mode of action, is known as Cry34/35Ab1. Rootworm events are not all created equal and it’s important to understand the issues that have arisen in the past few years.

The Issue

In July 2011, Dr. Arron Gassman, Entomologist at Iowa State University, and other colleagues at Iowa State University published* that they found evidence of field-evolved resistance in Western Corn Rootworm to one of the Bt rootworm toxins used in corn. Here is a summary of their findings:

Toxin identified was showing susceptibility to rootworm resistance was the Cry3Bb1 protein found in YieldGard® RW, YieldGard® VT RW, YieldGard® VT Triple, and Genuity® VT Triple PRO™ hybrids.
Fields documented are in Iowa and were corn after corn where hybrids expressing the YieldGard Cry3Bb1 had been used repeatedly over several years.
Dr. Gassmann says the commonality of these field reports was that in addition to historically high corn rootworm populations in the area, the nature of the protein, the genetics of resistance and refuge compliance might have contributed to the resistant development.
He explained that YieldGard Cry3Bb1 is not considered a high-dose event and said rotating biotech traits or using hybrids with multiple rootworm modes of action will help to manage rootworm resistance.
No observed reduction to rootworm susceptibility to hybrids where the Herculex Cry34/35Ab1 toxin was present.

In an August 2011 news release** Monsanto acknowledged that unexpected damage to Bt corn hybrids expressing Cry3Bb1 protein was being reported in several Nebraska and Iowa counties.

Management Options

If you plan to use Bt corn, here are some options to consider to combat against the potential of rootworm resistance:

Solid Genetics & Traits - Remember that all corn rootworm traits can only protect yield that’s there in the first place. Hoegemeyer prides itself on their extensive research to pair high yielding genetics with traits that make sense for the Western Corn Belt
Added Trait Options – Hoegemeyer gives our customers the added options of more rootworm events, like Herculex Xtra and Agrisure RW
Crop Rotation – Rotating your crops can help in successfully managing pests that overwinter such as corn rootworm
Seed Treatments & Chemical Options – soil applied insecticides, pesticide applications and/or seed treatments can also combat against rootworm

Above all, remember it is very important to use diversity to manage rootworm and follow IRM / refuge guidelines and requirements when using the technologies being used.

* Published July article: Gassmann, A. J., Petzold, J. L., Keweshan, R. S., and Dunbar, M. W. 2011. Field-evolved resistance to Bt maize by western corn rootworm. PLoS ONE 6(7): e22629. doi:10.1371/journal.pone.002262

Other Credits: Iowa State University, University of Nebraska, University of Kentucky

**From article published on Monday, September 26, 2011 “ Nebraska Corn: With Rootworm Bt Resistance Threats, Pick Your Hybrids Wisely” By Bob Wright, Extension Entomology Specialist, and Lance Meinke, Professor of Entomology (AGFAX.com)

Footnotes:
®, ™ trademarks of Hoegemeyer Hybrids. © 2011 Hoegemeyer Hybrids.
® YieldGard, the YieldGard Corn Borer design, the YieldGard Rootworm design, and the YieldGard Plus design are registered trademarks used under license from Monsanto Company.

In The News

Hoegemeyer Announces New Product Line-up
“At Hoegemeyer Hybrids, we’ve spent more than 70 years listening to our customers and providing them with the right...
» more

Another Farmland Price Record Set in Iowa
The northwest Iowa farmland market posted another one for the record books Oct. 4. That's when 120...
» more

National FFA Announces New Officer Team
Check out the photo gallery at the link below.
» more

New Bacteria Toxins Against Resistant Insects
Toxins from Bacillus thuringiensis bacteria (Bt toxins) are used in organic and conventional farming...
» more

Corn May Return to $7 Amid Ethanol, China Demand
Corn prices may return to the $7 a bushel area amid strong demand from U.S. ethanol producers...
» more

Hoegemeyer Recipe
Kim Neis - Eudora, KS

Pumpkin Bundt Cake
1 yellow cake mix
4 eggs
3/4 c. sugar
1 T. cinnamon
1/2 c. oil
1 (16 oz) can pumpkin

Frosting

3 oz cream cheese
1/2 lb powdered sugar
1/2 stick oleo
Milk (enough milk to be creamy)
1/2 tsp vanilla

Mix cake ingredients and bake in greased bundt pan 45-50 minutes at 350 degrees. Cool in pan about 7-10 minutes. Turn over on plate; cool.

Pour frosting over cake.


www.therightseed.com
November 15 10% Early Pay Discount November 29 - December 1 Amarillo Farm Show, Amarillo, TX December 6-8 Nebraska Power Farming Show, Lincoln, NE Follow Hoegemeyer Hybrids on Facebook!	November 2011 Quote of the Month "Don't let go of your dreams and aspirations. If you do you will cease to exist." - Henry David Thoreau Hoegemeyer Wishes You A Safe Harvest Fall is such a great time of the year – with combines rolling in the field and the colors changing in the leaves. It’s a time to reflect on the many blessings that we are given. We hope that your harvest season has been a safe and bountiful one for you and your family! Goss’s Wilt – Success Stories from the field Hoegemeyer’s corn hybrid line-up has seen some success in the field with it’s tolerance to Goss’s Wilt. Hybrid selection, tillage and crop rotation are the only practices with solid data behind them to manage Goss’s Wilt. Hoegemeyer’s product line-up have had good tolerance to Goss’s Wilt. For more information about Goss’s Wilt, check out our » Technical Bulletin. Gray Leaf Spot in Corn Gray Leaf Spot (GLS) in corn was observed in many fields this year. The fungus causing GLS overwinters in and on corn debris left above and on the soil surface. In late spring, in response to warm temperatures and high humidity, GLS spores begin to develop on residues. These are blown by wind onto the lower leaves of the present season's corn plants. Usually, the initial infections occur in mid-June to late June but the disease does not begin to spread rapidly until late July and August. In addition to the environment, GLS is influenced by plant maturity. Generally, initial symptoms do not appear widespread until around pollination, regardless of the planting date. Also, the plant’s lower or older leaves are usually the sites of initial infection. After about 2 weeks, the resulting lesions generate a new crop of spores which infect the middle and upper leaves. As plants mature, susceptibility to GLS increases. This fact, in addition to the time required for new infections to occur, partly explains the late-season appearance of GLS in some corn fields. Potential yield losses from GLS most often range between 5 to 40 bushels/acre mainly due to leaf tissue loss. The reduction of leaf area results in sugar production loss, which translates into less grain. Extreme leaf damage can lead to premature death of plants. Premature death lowers the value of the corn crop whether it relates to grain yield, grain quality, stalk quality or if the crop was to be used for silage. As mentioned earlier, with the increased use of reduced and no-tillage practices, GLS has become a very significant problem, especially in higher humidity corn growing environments. If Gray Leaf Spot is a potential concern for you, what are some season long precautions to consider? Plant early if possible. Late planting dates increase the risk of greater GLS problems due to increased fungal inoculum available at earlier stages of plant maturity. Avoid planting susceptible corn in fields prone to frequent and extended periods of dew. Plant hybrids at recommended seeding rates to promote rapid stand establishment and optimal plant development. Scout your fields regularly to detect GLS and assess its severity to help you make crop production decisions for the next crop. Harvest in a timely manner to help reduce the levels of gray leaf spot-related stalk lodging. Contact your local Hoegemeyer DSM if Gray Leaf Spot is a concern in your area this year. CREDITS: University of Nebraska, Ohio State University, University of North Carolina Bt Corn Rootworm Resistance Concerns Rootworm is a growing concern in many corn growing locations. It’s important to understand the background of rootworm events when planning crop management strategy from year to year –especially if acres are corn-on-corn. Advancements in biotechnology are classified as an event in the seed industry and are assigned an “event number”. TheYieldGard rootworm protein event is Cry3Bb1 and the Herculex rootworm protein event, which is a multiple event or mode of action, is known as Cry34/35Ab1. Rootworm events are not all created equal and it’s important to understand the issues that have arisen in the past few years. The Issue In July 2011, Dr. Arron Gassman, Entomologist at Iowa State University, and other colleagues at Iowa State University published* that they found evidence of field-evolved resistance in Western Corn Rootworm to one of the Bt rootworm toxins used in corn. Here is a summary of their findings: Toxin identified was showing susceptibility to rootworm resistance was the Cry3Bb1 protein found in YieldGard® RW, YieldGard® VT RW, YieldGard® VT Triple, and Genuity® VT Triple PRO™ hybrids. Fields documented are in Iowa and were corn after corn where hybrids expressing the YieldGard Cry3Bb1 had been used repeatedly over several years. Dr. Gassmann says the commonality of these field reports was that in addition to historically high corn rootworm populations in the area, the nature of the protein, the genetics of resistance and refuge compliance might have contributed to the resistant development. He explained that YieldGard Cry3Bb1 is not considered a high-dose event and said rotating biotech traits or using hybrids with multiple rootworm modes of action will help to manage rootworm resistance. No observed reduction to rootworm susceptibility to hybrids where the Herculex Cry34/35Ab1 toxin was present. In an August 2011 news release** Monsanto acknowledged that unexpected damage to Bt corn hybrids expressing Cry3Bb1 protein was being reported in several Nebraska and Iowa counties. Management Options If you plan to use Bt corn, here are some options to consider to combat against the potential of rootworm resistance: Solid Genetics & Traits - Remember that all corn rootworm traits can only protect yield that’s there in the first place. Hoegemeyer prides itself on their extensive research to pair high yielding genetics with traits that make sense for the Western Corn Belt Added Trait Options – Hoegemeyer gives our customers the added options of more rootworm events, like Herculex Xtra and Agrisure RW Crop Rotation – Rotating your crops can help in successfully managing pests that overwinter such as corn rootworm Seed Treatments & Chemical Options – soil applied insecticides, pesticide applications and/or seed treatments can also combat against rootworm Above all, remember it is very important to use diversity to manage rootworm and follow IRM / refuge guidelines and requirements when using the technologies being used. * Published July article: Gassmann, A. J., Petzold, J. L., Keweshan, R. S., and Dunbar, M. W. 2011. Field-evolved resistance to Bt maize by western corn rootworm. PLoS ONE 6(7): e22629. doi:10.1371/journal.pone.002262 Other Credits: Iowa State University, University of Nebraska, University of Kentucky From article published on Monday, September 26, 2011 “ Nebraska Corn: With Rootworm Bt Resistance Threats, Pick Your Hybrids Wisely” By Bob Wright, Extension Entomology Specialist, and Lance Meinke, Professor of Entomology (AGFAX.com) Footnotes: ®, ™ trademarks of Hoegemeyer Hybrids. © 2011 Hoegemeyer Hybrids. ® YieldGard, the YieldGard Corn Borer design, the YieldGard Rootworm design, and the YieldGard Plus design are registered trademarks used under license from Monsanto Company. In The News Hoegemeyer Announces New Product Line-up “At Hoegemeyer Hybrids, we’ve spent more than 70 years listening to our customers and providing them with the right... » more Another Farmland Price Record Set in Iowa The northwest Iowa farmland market posted another one for the record books Oct. 4. That's when 120... » more National FFA Announces New Officer Team Check out the photo gallery at the link below. » more New Bacteria Toxins Against Resistant Insects Toxins from Bacillus thuringiensis bacteria (Bt toxins) are used in organic and conventional farming... » more Corn May Return to $7 Amid Ethanol, China Demand Corn prices may return to the $7 a bushel area amid strong demand from U.S. ethanol producers... » more Hoegemeyer Recipe Kim Neis - Eudora, KS Pumpkin Bundt Cake 1 yellow cake mix 4 eggs 3/4 c. sugar 1 T. cinnamon 1/2 c. oil 1 (16 oz) can pumpkin Frosting** 3 oz cream cheese 1/2 lb powdered sugar 1/2 stick oleo Milk (enough milk to be creamy) 1/2 tsp vanilla Mix cake ingredients and bake in greased bundt pan 45-50 minutes at 350 degrees. Cool in pan about 7-10 minutes. Turn over on plate; cool. Pour frosting over cake.