Thomas Edison –
American inventor
Weather and
Corn Development
It
looks like another warm week ahead for the Far Northern Plains with a chance of
rain on the weekend. If temps hold close
to the forecast over the week, we should hit around 130 GDD’s over the 7-day
span. After emergence, the corn crop
will develop with a new leaf every 80-85 GDD’s (corn Growing Degree Day’s) from
emergence to V10, or roughly a gain of three leaf stages per 2-week period with
80F plus daily high temperatures for the month of June. https://www.agry.purdue.edu/ext/corn...
/VStagePrediction.html
I’ll estimate most of the corn in
the region was planted around May 15th. Therefore, I’ll provide NDAWN corn GDD maps
starting at that point moving forward for the growing season. As you can see, the Red River Valley has been
consistent with heat all the way up to the Canadian border. It’s interesting to note that the first two
weeks of May provided very little corn heat (GDD) units (first map is GDD
accumulations from May 15 to May 31; second map is May 1 to May 31).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhnrtzCkwym__VJ7Rpwvq5XQaisy_mD5IbkvGzOnmR8GxmnRO3wxVlqjmgMWJFl0FaX0khtTUXGDLwIcItAhNIRb8mvr_71l0qWawtDHAfye52YEp4URIG4iwjC5WrAxZ2tlprwhMxn-yjL/s640/2.jpg)
I’ll count on your weather app
for a best guidance through the 7-8 day forecast, but looking beyond that, I’ve
found this site from NOAA to be fairly reliable for a general 8-14 day outlook. https://www.cpc.ncep.noaa.gov/products/predictions/814day/...
During this time frame, basically
next week, the forecast is to have slightly greater chances of being below
average for temperatures, while the precipitation forecast is for slightly
greater chances of being above average precipitation. Therefore, push hard this week to get as much
seeding and spraying accomplished as possible, and then we could probably use a
break with a bit of rain.
Since we had a late start to the majority of our corn and soybean planting this spring, it is worthy of continuing to take a look at the Sept-Oct-Nov time frame for a long range 3-month outlook to try and see how the harvest season my look. This timeframe forecast from NOAA reveals equal chances for both above and below average precipitation, but for temperatures, there is a significantly greater chance that we should experience warmer than average conditions. Overall, an optimistic outlook for the autumn. https://www.cpc.ncep.noaa.gov/.../predictions/long_range/seasonal...
Planting Progress in the US
Nationwide, the planting progress for corn and soybeans continues at a very strong pace. Currently, the USDA reports the nation at about 93% planted for corn (89% is the 5-yr average), and 78% of the planted corn has emerged (similar to the 5-yr average of 73%). For soybeans, 75% of the intended acres have been planted (68% is the 5-yr average), while 52% of the soybeans have emerged (44% is the 5-yr average).
For crop condition, the corn crop has 75% of the acres in the good to excellent category, while the soybeans rate at 70% good to excellent.
The USDA says spring wheat is 91% sown with the 5-yr average of 96%, but the crop is looking good with an 80% crop condition report in the good or excellent category.
For the state of North Dakota, it is reporting 75% corn, 51% soybeans, 85% spring wheat, 40% sunflowers, and 99% sugarbeets for completion of planting percentages as of Sunday, May 31st. Canola is not reported.
From this point forward, I’d estimate that most of the remaining planting will be sunflowers and soybeans, with a bit of spring wheat and canola yet to be planted.
USDA’s Crop Progress reports can be found at this site: https://usda.library.cornell.edu/concern/publications/8336h188j
Post-emerge
Weed Strategies
We’ve had near ideal conditions for crop and weed growth
over the past two and a half weeks. One
of my long-time mentors had the saying during this time of year… “happy weeds
die very well”. This was to highlight if
the weeds were very content with more than adequate heat, sunshine, fertility
and water, they were very adapting to uptake anything and everything including
the herbicide mix, and thus a great kill rate.
Often through the stage of post-emerge weed application
season, we endure several factors to keep weeds and crops stressed: too much
water, not enough sunshine, too much wind, cold nights, etc.). Loading up the tank with full rates of
adjuvants and herbicides to make sure the stressed weeds have better uptake of
the pesticide mix is often a good strategy.
However, we sometimes forget those high rates also must be metabolized
by the crop.
Unless the weather changes significantly, we should have
very good uptake and performance with our post-emerge spray programs this
season (excluding potential herbicide resistant populations). Unfortunately, tank-mixes with high adjuvant
load can be more difficult for the crop to metabolize and result in increased
crop response.
At the end of the day, please stay in touch with your
agronomist and/or retail crop protection provider to ensure that appropriate
rates of adjuvants and herbicide mixes are ideal for the targeted weed species
and weed size. This will most likely be
a spring where we can adjust the rates downward and still maintain maximum weed
uptake while also improving crop safety.
Good luck! https://extension.psu.edu/spray-adjuvants
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0BIv6D2xBADMhd0IMDB94z-h_Fl1YpcAvPrJx8M6IU-loDI_IGnAIKRSIwih4EsD7P8mWYR1Wz3h8L5fzbkHZYUnXIxFdnXWchx6C4nvxqz0aHwPrKR7cn0ecHnSozEMhSOPd_pJFA-jq/s200/4.png)
“Crop Life”
had an interesting article on the move to Brevant™ from Corteva® for the retail
seed sector. The article makes an
interesting comment on the fact that seed sales revenue at the retail level has
not been as significant as most had predicted 10-15 years ago. Sales of seed in the retail sector have only
increased from 9% to 16% of overall ag-retail revenue since the early 2000’s. To read the full “Crop Life” article: https://www.croplife.com/crop-inputs/seed-biotech/corteva-brevant...
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEipoq-Ydck4MG6BN1JeBZQ5IH8lCpA4Dz9UWrX7VGUXewx2fba3xocMJ7PMLs8yaIfGOY11VDY8Z479bvw-f25o6va7yOvtCyrabGimxhUa-6OKg2FPm7HdCOgV-Nlnl48TRFKx-k-aJmB8/s200/6.jpg)
The other dicamba products on the
market for over-the-top approved formulations for use in Xtend® soybeans
include: ExtendiMax™ by Bayer (Germany), Engenia™ by BASF (Germany) and Tavium™
by Syngenta (China). Fexapan™ (USA),
XtendiMax™, and Tavium™ all have dicamba with the VaporGrip™ technology. Tavium® distinguishes itself in this list
with the addition of metolachlor (Dual™, Cinch™, EverpreX™, etc.) in the jug as
a pre-mix for longer residual control.
BASF’s Engenia™ is a heavier salt formulation of dicamba and thus has
lower use rates compared to the VaporGrip® products.
|
The NDSU Crop and Pest report is a
great resource for agronomic insight impacting our region. They distribute a weekly report via e-mail and
subscriptions can be found here as desired: https://www.ag.ndsu.edu/cpr/subscribe-to-crop-pest-report-pdf-version
Although North Dakota was not sampled
for the reproduction research, the good news is that South Dakota is only
reporting a 25% level of reproduction and I would assume northwestern Minnesota
would be holding down Minnesota’s results of 64%.
Unfortunately at this stage, most seed
companies are still providing commercially available varieties with the PI
88788 genetics wide-spread within their current seed offerings. It is estimated that 80-90% of commercially
available soybean varieties with SCN resistance are with the PI88788 genetic
package. The alternative soybean cyst
genetic package of “Peking” is present in the maturity zone of Group 00 and
Group 0 for our region, but with only a very few select varieties today. There are alternative soybean cyst genetic
packages being developed in most soybean breeding programs, and these genetic
packages to fight SCN will become commercially available in soybean varieties
in the near future (2-5 years). https://crops.iastate.edu/cropnews/20-scn-infested-fields-200-buac...
Also, the EPA is considering the
proposal to register a Cry14Ab-1 Bt protein in soybeans with activity against
SCN. Currently, there is a 15-day
comment period underway with comments due into the EPA by June 5th. https://www.epa.gov/pesticides/epa-proposes-action-protect-soybeans-major-agricultural-pest
For the North Dakota and northwest
Minnesota area, unless a location is very heavy into a consistent soybean
rotation, farm managers and agronomists should be able to stay ahead of the SCN
pest. Over the next decade a combination
of tools will become more available: Peking genetics, other genetic packages
currently being bred into germplasm, and Genetically Engineered (GE) Bt traits. As usual, it’ll be interesting to see how the
technology progresses with potential “stacked” traits to fight our Number 1
yield robbing pest in US soybean production.
Random
Agricultural Facts – Pioneer Hi-Bred Int’l History
Believe it or not,
it was 94 years ago this May that Pioneer Hi-Bred started marketing and selling
agricultural seed products in the central Iowa area. Most everyone knows that Pioneer Hi-Bred got
its business start by selling corn genetics in the heart of the Midwest (Iowa)
back in the 1920’s. But does anyone know the second crop Henry A. Wallace
brought to market in the seed business under the “Pioneer®” brand??
It would be easy to
guess soybeans, but that answer would be wrong!
Actually, grain sorghum was the second hybrid crop Pioneer® added
to its product line-up to address customer needs where moisture was limited for
corn production. The sorghum breeding
program was established in the mid-1950s. From then on, the target market continued to
grow, and commercial sorghum operations began in 1962 with the first bags of Pioneer
grain sorghum being sold in the state of Texas.
So, how about the
soybeans? You’ll be glad to know that
soybeans were the third crop Pioneer Hi-Bred brought to market. The year?
It was 1973 that Pioneer began selling commercial soybeans in the
US.
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