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Soils are a bit too cold across Iowa right now for any widespread #corn planting.
Soil temps as of Sunday were hovering around 40F, but 50F and above is most preferable to plant corn.
Air temps will be chilly most of this week, but warmer weather is forecast this weekend.
Wheat crop up 1 to 37% P/VP and down 2 to 30% G/E.
Close to the lowest April rating in history still.
Not the best forecast either(which was a big part of the rally today):
7 Day Total precipitation below:
Highs for days 3-7:
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Current Hazards map from the Severe Storm Forecast Center
Freeze warning in purple will feature temps not cold enough to hurt wheat this early in the chilly so far, Spring.
Jim printed the entire report out for us:
Here's the link again:
Extended is not as cold. Should help corn planting to get started in early May, which could finally warm up.
12z guidance all came out colder in week 2 than previous run but they are all pretty dry.
Corn growers are going to plant in the right timeframe, hoping for future success. But it's the reaping that counts.
All sorts of things contribute to the final yield at harvest.
Planting is just the start of it. Planting late can make the crop more vulnerable.
With corn, those huge leaves are what gather energy for the plant from photosynthesis. The amount of energy coming from the sun, peaks on June 21st and is greatest between April 21st and August 21st.
If you start planting too late and shift the time frame when the leaves gathering energy are at a less optimal sun potency level, you will lose a few % of yield potential.
If you start on May 21st, for instance, you can still have a great crop, even a record crop if the more important weather is perfect during the growing season but producers want to have every edge they can and planting late.......takes away this edge.
August, is usually the driest month of the Summer. If you plant late, the crop is more likely to encounter adverse moisture conditions during filling. ....possibly even during pollination in late July.
You will also increase the risk from an early freeze in September in the northern Midwest before enough growing degree days have accumulated. Maybe it's only a 5% risk of a serious yield harming freeze in an average year but if you plant early, it can be down to 2% and plant very late, it can be almost 10%.
You can plant too early too.
You don't want seed sitting in the cold soil for a long time waiting for warmer temperatures to germinate. This can cause all sorts of issues, including poor germination.
If you plant super early, the crop is at risk for a late Spring freeze. Usually, this will just burn the foliage above ground but that setback, steals more energy from the plant and take away long term yield.
You don't want to plant in wet soils. This compacts the soils and germination in wet soils means the early root systems will not expand in search of moisture. Expansive/deep Corn roots are a farmers best friend all season long.
Shallow roots from wet soils early will not have access to deep moisture needed later in the Summer when the soil moisture is drying up or as much of the other minerals/nutrients in the soil.
Planting too wet/cold or before a very heavy rain can also cause uniform germination problems.
The most important thing is ample, well timed rains in June-August, as well as avoiding excessive, long lived heat waves........especially in August, when the kernels are filling.
Extremely warm/humid nights in August can accelerate the filing and cause "heat fill". Something we know alot about in S.Indiana.
This might seem like a great plus to bring the crop to maturity faster but IT'S NEVER a good thing.
Heat fill for corn August 22, 2021
13 responses |
Started by metmike - Aug. 22, 2021, 8:31 p.m.
Now versus a month ago. Drought has expanded in the Plains (HRW wheat country, Nebraska, somewhat SD), but it has retreated in North Dakota and parts of the Midwest. Planting into dry soils is not the problem (actually it helps), but the fear is continuation of the dryness.
Still cold soils on Thursday in IA:
Central and especially S.IL soil temps actually cooled off during this last cold spell but will jump higher with this shot of heat......also in S.IA...........then another shot of chilly weather next week!
Earlier, my thinking was that next weeks return to chilly weather will last into the first few days in May THEN, we could finally warm up and planting could accelerate rapidly in the areas that are not too wet.
Most of the ECB is just too dang wet right now and it will take a couple weeks of drying for us in S.Indiana to even think about planting, except for maybe some well drained high ground........as long as we avoid any unexpectedly heavy rains.
I was looking at the last European model and it has a pretty decent system with(not excessive but fairly widespread) rain coming towards the end of the first week in May, which could delay things an extra several days and try to reinforce the cold air boundary farther south to keep the heat from moving in with gusto.