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Tuesday, May 23, 2017

Palmer Amaranth Control with Dicamba

Reports out of Western Tennessee show spotty results with Dicamba on Palmer Amaranth.  Results are discussed in No-Till Farmer. If you do not get a complete kill follow up with other treatments.  A hoe may be the only effective one.

Sunday, May 21, 2017

Micronutrients and Biostimulants.

I seldom recommend micronutrients.  The reason is that many producers have other issues to correct such as macro nutrient levels and pH. Those issues need to be taken car e of first.  When are to the point of fine tuning then you can look at micronutrients and bio-stimulants.  Karen Corrigan and Terry Gerken offered really good advice in the May Issue of Prairie Farmer.

Monday, May 1, 2017

Rainfall Amounts

Rainfall amounts have been excessive across much  of Illinois in the past week.  Below is a map showing NOAA estimates.  I am in the 6 inch range which matches my rain gauge pretty well.  I estimate a week with no rain before we can get back in the field.  Will your corn survive?  Probably not if it is under water.  If it is still in the ground, but not under water, it depends on when it was planted.  If the soil gets saturated before 24 hours have passed since planting,  you are probably looking at replant.  Keep in mind that stands with population over 20,000 may not need replant.  Also, if replanting, I would recommend destroying the old crop instead of letting early corn compete with late corn.

Saturday, April 29, 2017

Nitrogen Loss in Saturated Soils

We sometime hear that lots of rain will leach our nitrogen fertilizer.  My experience is that unless the soils are very sandy, most of the nitrogen loss will be from denitrification.  In other words, the nitrate nitrogen is converted to unavailable forms. Losses will be much less on recently applied anhydrous ammonia than on fields where nitrate forms have been applied, or where early applied nitrogen has already nitrified. This article out of Mississippi puts some numbers to it.  In warm weather we can lose up to 5% a day.  Some testing might be in order when soil have dried out.  When oxygen gets back into the system, There will be some renitification.  Cultivation can encourage that, but it will not take the place of fertilizer entirely.  You models such as Climate or Yield 360 can be useful too, but I do not trust them entirely.

Friday, April 28, 2017

New Field Equipment

We bought Ipad Mini 2's to use for guidance in the field.  We are running the IGIS App.  Everything seems to be working well.  Visibility is decent in map mode or blank. Screens are dark with Aerial photography turned on.  Sape Files need to be in a zipped directory to transfer them to the Ipad.    We make the fill transparent and thicken the lines.  Line color does not seem to make a difference.  It is a good tool for sampling and appears to have potential for field mapping as well.  The newer version of IGIS is much nicer than the old version I had tried previously.  I am running the free version.  A $25 subscription is needed for on screen labeling.  I need to touch the screen to see the labels.  The subscription is also needed to export your mapping.

Thursday, April 27, 2017

Dell Computer Update

I got a call a few days ago asking how my computer was working. I told the person fine and hung up. Today I checked the number and it turned out that it was a legitimate call from Dell. I bought a Dell Tablet two years ago that was nothing but trouble the first 6 months I owned it. I have previously written here about it.  Dell repaired it 4 times and replaced everything but the case and screen eventually. Turned out to be a bad battery. It has been working well ever since. It gets lots of vibration etc. because I mostly use it mounted on my 4 wheeler for work. Since they finally got it fixed, I am very pleased with it, but it was a painful process. I am really surprised they called to check on it after all this time. Way to go Dell.

Monday, April 24, 2017

Corn at Famersville

We sampled near Farmersville today.  Lots of corn was completely emerged.  Some is just spiking. There was still a lot of planters in the field. I think most were planting corn.  The Virden soil was still pretty wet, but over all planting conditions were excellent.