I leave you with the following comments and reflections in this, my final blog.
Our crop at the Agronology 10 Research Center was planted later than normal and experienced some rather significant weather events.
At growth stage V5 to V6, a straight line wind flattened the entire corn crop. Then, at V10 to V12 the crop experienced a green snap event. This green snap damage resulted in 1000 to 8000 plants per acre being eliminated.
Finally, the rainfall pattern in July and August was very stressful for the crop. We would get .5 to 1.0 inch of rain and then go 3 weeks without any additional rainfall. In late August, we received about 3.5 inches of rain in 3 days. This late rain greatly and positively affected our soybean crop, but was too late for our corn crop.
The highlight of 2014 was our family trip to Disney with 10 family members. Those two 7-year-old grandsons certainly enjoyed all the magic, color, and sound that are abundant at Disney.
My 70th birthday and Retirement Party after Thanksgiving was something for me to remember.
Again, thanks for the good times and fond memories!
Today through March 31, 2015, the farmer has the vitally important opportunity to reallocate their farm’s base acres and/or update yields to reflect current practices.
Additionally, the farm can also make the decision for the five year period, 2014 through 2018, for Price Loss Coverage (PLC) or Agricultural Risk Coverage (ARC).
For further information, contact your local USDA Farm Service Agency or go online at www.extension.iastate.edu/agdm/info/farmbill.html.
Dr. Fred Below and others at the University of Illinois have demonstrated that rootworm traited corn requires more potassium than non-rootworm traited corn.
Dr. Below reported that a 200 bu/a corn crop will take up 274 lbs. K20 per acre or approximately 1.4 lbs. K20 per bushel produced. In his study, he utilized six different hybrid pairs that differed by the presence or absence of the rootworm trait at two locations over two growing seasons.
The rootworm traited corn required 13 percent more potassium than the non-rootworm traited corn.
At the Agronology 10 Research Center at Walcott, Iowa, in the last four years (2011-2014) the soybean yields have truly been outstanding. The package of management factors employed has included:
- Early planting date
- Ready 2 Yield Soybeans with excellent disease control packages
- Good soil test P & K values
- 91% of the soybeans had a soybean fertility package applied
- Effective early weed control
- Fall tillage
Critical Observations at the Agronology 10 Research Center
Observations_________ 2011 2012 2013 2014 4 Yr. AV.
AV yield for 18 plots/yr: 80.5 72.7 81.8 77.4 78.1
Highest yield for individual plot/yr: 84.0 75.3 89.8 81.6 82.7
Planting Date: 5/02 4/25 5/01 5/06 5/1
P&K applied (fall, dribble band): 15/18 17/18 17/19 17/18 91%
P (ppm) 36 33 31 28 32
K (ppm): 227 224 236 211 224
CEC (MEQ): 19.2 24.7 18.8 20.2 20.7
Tillage (fall): 18/18 18/18 19/19 18/18 100%___
I have finished harvesting both our corn and soybeans at the Agronology 10 Research Center on September 30, 2014.
One of the biggest fall harvesting surprises occurred on Tuesday, September 30, 2014. On Tuesday evening, we began harvesting our maturity group 2.9 soybeans with temperatures in the middle 80’s. Wednesday morning it was cold (55°), overcast, with no dew, and the wind was blowing. When we finished harvesting on Tuesday evening, our harvest moistures for 2.9 maturity group soybeans were from 9.9 to 11.2%. But on Wednesday morning, our harvest moistures began at 14.5% and finished at mid- afternoon with harvest moistures still at 13.5%.
What is the effect of the cool to cold weather on crops in September?
Cold weather on corn
For corn, the influence of this cool weather is additional days to build yield by delaying crop maturity. However, by delaying maturity—black layers—later in the month of September, the crop will dry down more slowly, resulting in higher moistures at harvest time.
Cold weather on soybeans
For soybeans, this cool weather has very little effect on harvest timing. It could, however, reduce yields some.
Cold weather on crops
Both corn and soybeans will generally be killed by 28°F temperature for four hours. If the plant is killed by these cold temperatures prior to maturity, higher moistures in the grain will be seen.
Yesterday, September 11, I drove back from a meeting in Kansas City. Along I-80 & I-35, very few cornfields had been harvested. However, several fields in the general Kansas City area appeared to be ready for harvest.
But massive amounts of rain received on September 9-10 will be delaying the beginning of harvest along the IA-MO state line.
The general health and maturity of the soybean crop is most easily seen today. If the entire field is yellowing, then that’s good. However, if you see areas in the bean field which are still green and other areas that are turning yellow, something is wrong.