Make no mistake, the Roundup Ready system in both corn and soybeans is poosibly the greatest boon to farming over the past 20 years. Still, it was only a matter of time until nature would greet us with some form of resistance, as is happening now. Soybean farmers need to be vigilant when it comes to weed resistance to glyphosate herbicides like Roundup® and Glyphos™.
Ryegrass and marestail have been documented as exhibiting resistance to glyphosate and there is some strong evidence that waterhemp, common lambsquarter and giant ragweed are showing signs as well.
Let’s look at a few simple techniques that growers can start using right away in their soybean program to help minimize weed problems in this Roundup Ready era:
- Start clean- Stay clean.
By starting the growing season weed-free in your soybean field, you can help eliminate your reliance on glyphosate alone. If a farmer is no-tilling, the use of a proper burndown, consisting of more than just a glyphosate product, is essential. There is a wide range of burndown products that can be used with glyphosate or by themselves. If you plan to use tillage, then get rid of that temptation to just use glyphosate and add some other modes of action into the mix. The old “yellow” herbicides (Treflan, Prowl, etc.) are fairly reliable for grass control and will also help with many small-seeded broadleaves. Keep your fields clean by using the right rate of glyphosate at the right time. Also, don’t forget the cultivator. It might be time to drag out that old beast put it back to work. Better a little bit now than a lot later!
- Right rate- Right time.
The Roundup Ready system for both corn and soybeans might just work too well! For instance, the labeled rate for most annual weeds on the Roundup WeatherMAX label is 22 ounces/acre when the weeds are between 3″ and 6″ high. However, most farmers will tell you they have had great success using that rate for weeds up to twice that height and there lies the problem! We start to rely on a low rate of glyphosate to control weeds that are taller than the labeled height. Therefore, we are artificially selecting those weeds that have a tendency toward resistance just so we can tell our friends and neighbors that we only sprayed our soybean fields once and did it at the lowest rate possible. Don’t fall into that trap!
- Rotate herbicide programs.
Growers should use glyphosate crops in farming rotation where they have the greatest economic and management value. Rotating between glyphosate-tolerant crops and conventional crops or crops with other types of herbicide resistance (LibertyLink® for example) can help prevent weed resistance.
Make it a priority in 2009 and beyond to address weed resistance to glyphosate herbicides. It will definately benefit you in the long run. For more information on weed resistance issues, contact our Latham Seed2Soil® specialists, or leave us a question in the comment box below!
March is the time of year we start getting questions as planting season approaches. The most common questions are:
- How thick should I plant the new bio-tech seeds?
- How early should I plant?
- Do I need stronger emergence for my soil type?
- Should I use a seed-applied insecticide?
- Should I use fungicide?
- Which technology trait do I need for each farm?
At Latham, we’ve geared up our agronomy testing to help answer these questions. This season we will be conducting new yield trials that should provide some compelling data. These trials will help provide guidance on:
- Optimum corn populations
- Fungicides for early planted corn
- Twin row vs. conventional row spacing
- Seed applied nematicides for corn
- Corn hybrid yield performance for different soil types
There is no shortage of questions when it comes to producing higher yields. The best approach is to work with a knowledgeable seed representative that can help you learn more about the products. In turn, you will have a positive and more productive experience with your Latham® brand seed.
Do you have a question that comes to mind as planting season approaches? Want some advice from a Latham Seed2Soil® specialist? Share it with us in the comment box below!
This is innovation with a singular purpose. To help you do what you do best, even better.
We’re excited to be involved with Monsanto’s launch of Genuity™, its “umbrella” brand for current and future seed traits that we think will help simplify and integrate the decision-making process for growers in selecting seed.
The Genuity brand will be fully rolled out into the marketplace in 2010.
With trait-building technologies advancing at a dizzying pace these days, Monsanto saw the need to create an easily identifiable marketing platform that would be the host brand for the newest and future technologies. This will help reduce the proliferation of separate brand marks that would otherwise result as new technologies steadily come to market in future years.
As Genuity gets up and running, Monsanto’s latest traits will take their place under the brand. For example, in 2010, you’ll see Genuity™ Roundup Ready 2 Yield™ soybeans and Genuity™ VT Triple Pro™. Pre-commercial traits such as Genuity™ SmartStax™ will also be under the new brand. Monsanto says a number of traits under YieldGard will remain independent of Genuity for now, and eventually phased out as their technologies are upgraded and placed under Genuity.
Of course some products with multiple traits will have more than one icon. Latham will be participating in Genuity brand implementation meetings starting this month, so check back to The Field Position for the latest on Genuity as we map out how Latham will incorporate this brand system into our products.
Each Genuity product will also be accompanied by an “icon” or symbol signifying the basic functional benefit of the seed trait. They are as follows:
Have questions on this new system of brands from Monsanto? Leave us a note in the comment box below!