foliar feeding corn

[Paul]

Did anyone foliar feed 5 to 6 leaf yellowing corn with 30% N @ 2 to 3 gals. mixed with 12 gals. of water.? Was wondering if it would help short term and if it would burn it if the temps get above 85.

[hymark]

No I haven't but I was thinking of spreading dry ammonium sulfate with a spreader and whatever urea it needs for the desired N amount.  Lots of yellow striped leaves in this region which is sulfur, mag and roots can't get to N I think.

[5 Flat]

Yes. Use something with some sulfur and micro-nutrients. I think you will be fine spraying in the warmer temps if go early in the morn or late in the eve. The temp isn't as much of a problem as the hot sun.

[Paul]

Thanks for the reply, I did about 20 acres last week before rain. Used just about the same stuff you used. It was free and the fert. dealer didn't know why our corn was yellowing. We took tissue samples in the meantime. The treated corn looked worse and that puzzled them. The results of the tissue samples I posted under the " crop talk, subject: yellowing corn dry weather. " So far I have Penn state and the company Agxplore working on it . They said I did everything right and eliminated all the major possibilities. Paul

[5 Flat]

I went and read your other post. My immediate thought was 'too much boron'. How much boron was in the starter and nutri pak? Low sulfur might have played a role, but boron was probably the main issue.

[Paul]

The starter had .5% boron. My brother was going thru the internet and he also said it sounds like to much boron. I couldn't find the amount of boron on the nutri pak, but when I sprayed it on I guess it was like adding fuel to the fire. I will let you know when someone doing farther testing comes up with something. I'm hoping for more rain. Thanks again, Paul

[hymark]

The yellow stunted corn we had in your situation has come out of it with heat and more water.  I don't have all the tissue tests back yet but the corn looks better, some good, some excellent depending on field and history.  Realize I am not in the same exact spot in that field but you get the idea.  I need to get another after picture from the same spot.

[Paul]

Your corn came around nice. This field looks much better since it had some rain, but looks like it will yellow again if it gets dry. Paul

[dapper7]

paul, where are you located? in the westerncorn belt most soils are starving for boron.  that you have hi cal and aluminum is strange as cal will usually complex aluminum( aluminum is toxic to corn). without knowing more , short sulfur would be my guess. sorry i cant help more. d7

[Paul]

I live in central Pa. When they first looked at the corn from a distance they thought to it was a sulfur problem. As they walked the fields corn was  showing all kind of deficiencies. Zinc, P, K , sulfur , nitrogen burn, lack of nitrogen. So they  figured it's best to take the tissue samples. It's growing out of it, just wish I could get some of these showers that keep going around us. Plus I don't want to go through this next year, weather and markets are bad enough to deal with. Thanks, Paul