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Don't rush plans to control brush

Weeds of any kind, especially brush species, steal grass from pasture and hay producers in significant quantities. 

For every pound of broadleaf weeds controlled, grass production typically increases by about 2 pounds. The return is even better on brush. We usually get 3-plus pounds of increased grass for every pound of brush controlled. This happens by eliminating the competition for water and plant food nutrients.

There are some key differences between controlling weeds and controlling brush. Most, but not all, weeds can be satisfactorily controlled with a timely application of DuraCor, a broad-spectrum broadleaf herbicide labeled for almost 150 weeds. DuraCor can be applied by spraying or by blending (impregnating) into fertilizer. Sprayed applications are usually a little better, but both methods generally provide satisfactory control. When it comes to brush, however, all applications will be sprayed. Trying to achieve any kind of brush control via dry fertilizer impregnation will not have good results.

For brush control, we frequently need to create a plan and then follow the plan until the desired results are achieved. Patience is key, because that plan might encompass two or more years. It’s like writing a prescription to remedy the situation, one that provides the most bang for your buck.

For the most part, brush-control season has three opening dates:

June 15 is when we should start tackling brush-control tasks. The timing is right to control locust and hedge with DuraCor and Remedy. We can spray hedge sprouts until the end of September, but I like to finish spraying locust by the end of August when it begins to lose leaves. When spraying any brush, the leaves are the conduit to pull herbicide into the woody stem and eventually to the roots, where real control occurs.

July 1 is a good time to begin spraying most other tree species, such as oak, hickory, pear and persimmon, and we can continue to spray effectively until early September. Most tree sprouts and other woody species will respond to Remedy, Tordon or Starane. Remember, just because a herbicide is used on brush does not mean that it kills all brush. For example, Remedy has nearly zero impact on buckbrush.

This is where we begin to fine-tune a plan for the brush species you are dealing with. For instance, the recipe for oak and hickory control will be 3 pints Remedy and 2 pints Tordon 22K, using Astute Xtra as the surfactant. If you’re after a flush of pear or persimmon, use 3 pints of Surmount. Work with your local MFA representative to make a plan. We also have “cheat sheets” to get you started in the right direction, listing product, quantity and timing. If you have one or two species, these guides will usually point the way. To control multiple species with different herbicide and/or timing requirements, reach out to me or your local MFA for advice.

Sept. 1 kicks off spraying blackberries. We used to spray them in late May with mixed results and then have to spot spray in September to clean up survivors. When we move spray timing to September, or even early October, we get good control in one application. Either DuraCor plus Remedy or Chaparral plus Remedy will usually do the trick.

Some of my rules for success on brush control are:

  • Do not bush hog for one to two years before spraying. You need plenty of leaves to absorb the herbicide.
  • The rate should include 20 gallons of water per acre at a minimum for brush.
  • Spray booms or boomless nozzles need to be above the leaves you want to spray.
  • Adding the right surfactant, such as Astute Xtra, is every bit as important as the right herbicide.
  • Do not change the recommended herbicide rate, up or down. An increase might burn off the leaves before the herbicide can enter the stem, and a decrease might mean sick brush but not dead.
  • For woody species, do not bush hog until you see desired control. That won’t happen for at least a year. Be patient and see what might grow next year.

Controlling brushy competition and a fall fertilizer application can be the one-two punch to help you finish your forage year strong. Contact me at This email address is being protected from spambots. You need JavaScript enabled to view it. or your local MFA to write a prescription that best fits your operation.  

MORE - IN THIS AUGUST-SEPTEMBER ISSUE OF TODAY'S FARMER MAGAZINE - CLICK HERE.

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Selecting seed is no simple decision

Though it may seem too early to start thinking about seed decisions when this year’s crops are still growing, there are advantages to getting a headstart. Making plans now can give you time to do your homework and help ensure you get the products you want down the road.
CameronCameron Horine - Director of Seed This email address is being protected from spambots. You need JavaScript enabled to view it.

What brand, hybrid and variety of corn and soybeans to plant is one of the biggest decisions that must be made every year. Unfortunately, it’s not always as easy as just saying, “I want to go with Brand X and Hybrid Y for all of my corn acres” and then moving on from that choice. Emotion, past experiences, logic and goals all play a part in making that selection. Those factors are complicated by the fact that technologies and traits seem to change every year, and new hybrids and varieties are always entering the market. Growers have ever-evolving options from which to choose.

How do you sift through all those layers and rationalize seed decisions? Here are some things growers should be weighing when considering their needs:

• Yield potential: This is the first thing that comes to my mind when choosing seed, and, generally speaking, this is the most important factor for all growers. You should assess the performance of a hybrid or variety across multiple locations and years. However, you can’t just look at bushels per acre. It’s crucial to understand that seed products vary in their yield potential based on specific soil types, climate conditions and management.

• Maturity and harvestability: Is planting and harvest timing important to you? Do you need to begin harvest early and be done by football season or before the weather turns? Are you aiming to have corn pollination complete before the high heat and “normal” slump of rain in mid-summer? Do you want strong corn stalks that will stand late so you can harvest soybeans first? How do you want to space out your portfolio? Answers to all of those questions should factor into your decision.

• Herbicide and trait technology: What herbicide technologies are you planning to use? Do you want to be on the Enlist platform or the Xtend platform? Do you need glufosinate-tolerant corn? There are also drought tolerance and nitrogen efficiency among other traits now coming to the market.

• Disease and pest resistance: A key factor in successful crop production is having varieties with the ability to resist or tolerate various diseases and pests that can reduce yield and seed quality. Do you need a hybrid or variety that has resistance or tolerance to major threats in your region, including corn rootworm, corn earworm, tar spot, soybean cyst nematode, frogeye leaf spot or other fungal and bacterial diseases? Again, you must take these characteristics seriously when making seed selections.

• Brand loyalty and reputation: Are you more willing to only purchase a national brand? Do you prefer a local/regional brand that is more adapted?

I know this isn’t an exhaustive list of considerations that go into selecting the seed products that work best on your farm. Fortunately, MFA can help make these decisions easier and support your seed needs. With our own MorCorn and MorSoy lineups, we have locally adapted corn hybrids and soybean varieties that are tested and selected to fit our trade territory while delivering premier genetics. We also provide national seed brands, including Dekalb, Asgrow, NK and Brevant, for your corn and soybean needs as well. Our key account managers and retail location managers will help design the best seed portfolio for your needs to make your growing season successful.

Along with building a customized seed portfolio, we can provide other inputs, such as plant food and crop protection, to ensure that the seed you plant is given the best opportunity to reach its yield potential.

If you have any questions about your seed needs for the 2025 growing season, please contact your local MFA.

Read more of the June/July 2024 Today's Farmer Magazine HERE.

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Don’t let new diseases distract from old threats

Tar spot has been the hot disease topic in recent years and for good reason. It is a new threat that can cause devastating yield losses in corn.
However, with an important new disease on the loose, it can be easy to forget about others we’ve managed for in the past.

KevinMoore                       Kevin Moore
              Senior staff agronomist
Think about it this way. During the COVID-19 pandemic, we tended to focus on that disease and forget other things necessary for good health, such as exercising and eating nutritious foods. So, while focused on keeping COVID at bay, we lost sight of other health issues. While tar spot is proving to be something we need to manage, let’s not forget about other important corn diseases.

Good disease management begins with planting. The standard corn seed treatment package does a great job of protecting the crop from early-season diseases such as seedling rots, blights and damping off. Keep in mind, however, that planting into good conditions is necessary to give corn the best chance of coming up quickly and evenly, which gives pathogens less time to take hold. Another strategic management practice is adding a fungicide to the in-crop herbicide application around V5. Corn begins determining its yield potential at V6 when the number of ear rows is established, so protecting against early-
season foliar diseases like anthracnose will help that yield potential.

The reproductive stages are the most important time to keep the plants healthy and disease-free. Our most devastating diseases, such as tar spot, rob the corn crop of green foliage during these stages. Gray leaf spot and northern corn leaf blight have typically been the main foliar diseases of concern. They tend to be first seen around tasseling, and lesions continue to develop through the rest of the season. We recommend applying a fungicide with multiple modes of action around VT (full tassel) to R1 (beginning silk).

“Every time we get a new disease in our area, the old diseases will remain. It is important to manage for the disease spectrum as a whole.”

Southern rust will not survive our winters and moves from south to north with wind currents each year. That means infection timing varies from year to year. Fortunately, new advancements have led to fungicides that can be sprayed at VT-R1 timing to combat southern rust, even if it shows up later in the season. Further, these newer premium fungicides also offer the best yield protection from tar spot when applied during that timing. The new formulation allows growers to incorporate tar spot protection into management practices for historic diseases.

As we move into the season, stalk and ear rots become diseases of concern. Anthracnose, fusarium and giberella are three of many stalk rots that hinder the standability of a corn crop. We can’t directly fight these diseases with a fungicide, but that VT-R1 application can improve overall plant health and reduce the negative effects of these rots. Maintaining good soil fertility will also help. Adequate levels of nutrients, especially potassium, contribute to a healthy stalk and make it more difficult for pathogens to infect.

Ear rots such as aspergillus, diplodia, fusarium and giberella decrease grain quality. Some fungal pathogens produce mycotoxins that can negatively affect human and livestock health. As with stalk rots, fungicides will not directly protect against ear rots. However, we can defend against them with good soil fertility for general crop health.

If ear rot does occur, damaged kernels tend to be light and can be discarded by making combine adjustments. Proper storage is also important to keep any mold from spreading to healthy grain in the bin. Drying immediately to less than 15% moisture and then cooling to under 50 degrees will help maintain good grain quality in storage.

Every time we get a new disease in our area, the old diseases will remain. It is important to manage for the disease spectrum as a whole. The best way to start is a sound cropping plan, which not only covers disease control strategy but also fertility, insect and weed management. Contact MFA’s knowledgeable location managers and agronomy personnel to help develop your cropping plan.

CLICK TO READ MORE FROM THE 2024 MAY ISSUE OF TODAY'S FARMER MAGAZINE.

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Let’s get back to the basics

For growers heading into a new crop season, there’s certainly been a lot going on. We’ve experienced interest rate increases, heard what we can and can’t Jessedo with dicamba in Xtend soybeans, dealt with market fluctuations and seen changes in chemical pricing. Even with all these complexities, sometimes the solution can be something as simple as going back to the basics.

The first “basic” to consider is soil fertility. That is the most important driver in crop production. Without the proper soil pH and fertility, we cannot maximize any in-season application. When I think about soil fertility, I recall watching my mom balancing the checkbook. She’d sit at the kitchen table several nights a week making sure family finances were squared away. Why did she do this? She didn’t want to overdraft and bounce a check. The same concept is true for our soil bank account. We must know the fertility levels, especially potassium and phosphorus, to make sure we don’t draw out more than we put in.

It starts with a soil sample, and there are different ways of getting this data. Composite sampling is as basic as you can get. It’s like calling the bank and asking how much is in your checking account. That’s fine and dandy. But what if you have uncashed checks or automatic withdrawals scheduled? If you don’t know that info, an overdraft can occur easily.
What’s better than composite sampling? That’s grid sampling, offered in our Nutri-Track program. Grid sampling is like my mother’s approach to balancing the checkbook. She tallied every check written and every cash withdrawal to know exactly what was in the account.

“Have a plan, cover the basics, make agronomically correct decisions and do what has been proven to make money on your farm.”

Next, let’s talk dicamba. We’ve all heard by now when it comes to XtendiMax, Engenia and Tavium products, however much is in the retail space is all there is to be sold. There is probably not going to be enough to cover every acre. The best way to combat a shortage of dicamba is simple—don’t let weeds come up. And this advice goes for other technology platforms such as Enlist as well.

I recommend that growers spend more on their residual programs this year, specifically front-loading their pre-emergent herbicides. This can be done multiple ways. The product rate can be increased, you can add more actives or use more modes of action. The method depends on the driver weeds in a given field.

For example, you can use a standard rate of Boundary, which is 2 quarts per acre, spiked with 2.5-3 ounces of Zidua to get a longer length of residual. This does two things. First, you’ll see less weed competition early in the season. Data that shows early season is the most important time to be weed free. Secondly, when weeds do break, they won’t break as fast and as hard, which gets you further down the road and also lets you spray smaller weeds. We all know smaller weeds are easier to control.

Earlier, I mentioned weather. No one can control the weather, but a lot of meteorologists are saying we could have another drought year. Let me remind you that you cannot save your way to prosperity. Again, set the season up for success by making sure fertility is in order. In past drought years, we have looked at fields that were grid sampled and recommendations followed so that pH,

P and K levels were optimum. These fields may have not yielded “good” but always out-yielded fields that did not have optimum fertility.

Markets are also something we can not control. When talking about going back to basics, it’s good to know what you have invested in your crop before you start. This could change in season, but having a detailed spreadsheet of cost per acre and break-even levels is important. Use that information to contract enough to cover your inputs. This takes some stress off a grower in season. I guess it comes down to how much you want to gamble.

No doubt, there are a lot of pressures out there for growers. I encourage you to have a plan, cover the basics, make agronomically correct decisions and do what has been proven to make money on your farm.

CLICK TO READ the full April 2024 Issue of Today's Farmer magazine.

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Managing metabolic resistance in weeds

Dealing with herbicide-resistant weeds is nothing new for row-crop producers in MFA’s trade territory. Most of us in the farming community, myself included, have faced these rebellious weeds one way or another for an entire career—or even a lifetime, if you were born after the mid-1980s. Waterhemp, for example, has shown evolving tolerance to many major herbicide sites of action that we use to manage weeds in row crops.

If this is a familiar issue, why write about it? Simply put, we’re seeing resistance become more complex, requiring us to take weed management up a notch. Many herbicides that were effective are now less or not effective at all when applied after waterhemp has emerged. In most reported cases, resistance is linked to a single, specific mutation at the target site in the plant’s DNA. As a result, herbicides such as Pursuit, atrazine, glyphosate and Flexstar are no longer as effective on waterhemp as they once were.

“Producers need to be aware of metabolic resistance and what it could mean for their weed management program.”


Farmers have been managing this resistance by returning to soil residual herbicides. Mixing multiple modes of action in the spray tank and overlapping those residuals have been excellent strategies. However, some waterhemp populations in the U.S. are breaking through certain residual herbicides with a different type of resistance—metabolic resistance.

Like human metabolism breaks down food, plant metabolism also processes substances, in this case, herbicides. In weeds that have developed metabolic resistance, the herbicide’s active ingredients are broken down into nontoxic byproducts that don’t kill the plant.

Metabolic resistance in weeds is not widespread, but the true extent is unclear. Researching herbicide resistance is a labor-intensive process that involves sampling and collecting seeds from suspected fields and evaluating them under greenhouse conditions. Regardless, producers and agronomic advisors need to be aware of metabolic resistance and what it could mean for their weed management program when they encounter it.

Weed size appears to be a factor in controlling weeds with metabolic resistance. Even though some waterhemp plants may exhibit metabolic resistance, control of small seedlings less than 2 inches tall can be achieved with mesotrione (Callisto or Explorer). However, this is likely a short-term solution if practices are not altered or soil residuals are not activated by sufficient rainfall. Another concern is that other herbicides may not work as effectively. Some data shows that metolachlor and 2,4-D may not control plants with metabolism-based resistance.

How does metabolic resistance change your herbicide programs? So far, the best tactic is to prevent weeds from producing seeds. Integrated weed management and early action on escaped weeds are crucial. Removing escapes during the growing season is much easier than letting one female waterhemp plant release 100,000 seeds or more, worsening the problem in following seasons. Chemical recommendations need to be evaluated field by field, but limiting weed emergence is a great first step.

Soil residuals are an economical and effective way to control most weeds, so do not steer away from them. See-and-spray technologies, which offer precision chemical application, are tools for robust post-emergence applications with multiple effective modes of action when applied to small areas. This method is likely more cost-effective than broadcasting a multiple mode-of-action herbicide mixture on an entire field when weeds are absent. Precision tillage tools can also help spot and mechanically remove weeds but may require additional trips across the field.

Basic agronomic fundamentals also play a role and cannot be ignored. Don’t underestimate the power that proper seed placement and good crop establishment have on reducing weed competition. Selecting the right corn hybrid, soybean variety and planting population for your acre could help by limiting the amount of sunlight that reaches the soil. Light quality can impact weed seed germination, which is why covering the soil with crop leaf foliage is important.

Metabolic-based resistance in weeds is a significant challenge, but producers can minimize its impact with planning and proactive, integrated strategies. Consult your MFA agronomist for more information.

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