February 28, 2017
soil and trowel
Economic Value in Soil Samples
"In these times with low commodity prices, we need to be mindful of the economics, and we need to have a plan to keep us on track in order to obtain the highest return on investment," said Craig Loen, Federated agronomist at the Osceola location.
 
That plan should include current soil samples (taken within the last four crop years). A soil sample is a valuable tool, "a critical layer of information for determining what inputs we may be able to hold back...or push higher," said Loen.
 
Soil test results will reveal where nutrients are sufficient or lacking. "Remember that we have just come off two consecutive years of record yields," said Loen.  Record grain harvests translate into huge levels of nutrients now absent in the field, especially macro nutrients.
 
If nutrient levels are low -- proven only through soil testing -- cutting back on fertilizer may cut into, or even limit, yield potential. "After all," said Loen, "yield is king." The number of bushels makes or breaks every grower's bottom line, especially with the currently low commodity prices.
 
Federated's best recommendation for soil sampling is grid sampling, in 2.5-acre sections to get the best results and to show the variation across fields and soils. Grid sampling also allows Federated to use Variable Rate Technology (VRT) equipment to spread nutrients across a field.
 
"Bring in your current soil test results and we can help you understand all the numbers and their value to you," said Loen. Contact your Federated Agronomist to get help with sampling (grid or composite), or with any questions.
Weed Resistance Series
Both Pre & Post Needed in the Weed Control Battle in Corn

Summer corn
Managing weeds, and actually getting control, in corn fields takes careful planning before weeds even emerge, according to Craig Peterson, Federated agronomist at the Ogilvie location. "Putting down a good pre-emerge herbicide with multiple modes of action right after planting is the best start," he said.
 
Even though some of the toughest weed issues may be in soybeans -- such as waterhemp and giant ragweed (as discussed in previous issues of the Agronomy Update) -- weeds in corn are also becoming resistant to some herbicides, especially glyphosate.
 
"Studies have shown that weeds can start to affect yield even when the corn is only 2-4 inches [tall]," said Peterson. Products such as Acuron®, Lumax®, and Staunch® can be a great start to clean fields.
Herbicide Classification chart clip
Click image to see complete chart.
A fairly new tool, said Peterson, is the
Herbicide Classification Chart,
which provides information on how to get more than one mode of action when tank mixing -- the best way to combat resistance. The chart (a cut-out of which is shown above) shows, for instance, that Acuron has four active ingredients and three modes of action. Every product label includes this same information; the chart combines info from many labels.
 
Always consult the label of any product being considered to determine if it will cover weed pressures throughout the season. "Using a full-labeled rate of a good pre will give you the longest residual, and the best defense on resistance," said Peterson.
 
Even with a good pre-emerge herbicide program, today's weed battles in corn will require a post application. "Glyphosate used in the Roundup Ready crop system is the most popular," said Peterson, "but it only has one mode of action." Adding an HPPD product such as Impact®, or even adding atrazine, will boost weed control and combat resistance.
 
Liberty®, a Bayer product, is another good post product gaining more attention, but it also has only one mode of action, Peterson noted. Check labels for proper tank mixes and check the mode of action classification to avoid doubling up in the same categories.
 
"Remember," said Peterson, "post-applied products are aimed at 4-inch (or less) weeds, and timing is very important."

Your Federated Agronomist can help determine the best options to get started with clean fields and keep them clean to produce top yields and fight resistance in future crops.
In This Issue
Quick Links
Post-Emerge & Multiple Modes of Action  in Halex GT

In the quest for strong weed control, growers can add Halex GT to their list of solid post-emerge choices.
 
Halex GT offers broad-spectrum weed control and application flexibility with glyphosate and mesotrione/S-metolachlor, a combination that provides burndown and residual control of more than 90 broadleaf weeds and grasses.
 
Federated recommends Halex GT in the battle against herbicide resistance because it has the desired multiple modes of action (three), and has proven crop safety.
 
Halex GT -- "Glyphosate with Residual™" -- is a premix that provides a "convenient alternative to other post-emergence, glyphosate corn herbicide programs" (see Syngenta/Halex site).

Talk to your Federated Agronomist to see if Halex GT is the best choice for your fields this year.
Soybean Grower Workshops 
Set for March

Federated's annual Soybean Grower Workshops will be held in late March. Growers are invited to join these valuable discussions on key soybean topics for 2017. 

Each workshop begins at 10 a.m. and concludes with lunch.

Please RSVP to your local Federated Agronomist .

Mon., March 20 - Osceola

Tues., March 21 - Albertville

Wed., March 22 - Ogilvie

Thurs., March 23 - Rush City

Fri., March 24 - Isanti 
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