Is it worth spraying fungicide on corn at or just after tassel?

Question

We’ve got good moisture & decent fertility for once. Now I’m wondering what else I could possibly do on my end to help hold onto or increase yield? I’m new to using fungicides period, blank slate here.

Answer

My question is why do you say descent fertility for once? That should be an operator controlled variable..

Answer

Agree with ***** O. - Iowa farmers see break-even ROI 3 of 5 years and bonus bushels the other 2...the reward is worth being consistent. Timing is best at brown silk, whereas at VT-brown silk can cause pinching of the ear. Stopping fungal issues is one thing, respiration for plant recovery when overnight temps stay above 70 degrees is another. The generic work well, and there are new labeled products on the market as well - with good representation should provide guaranteed results. 
I applied pro-health foliar using Yield Igniter at V3-V6 with herbicide and another foliar with biological fungicide up to VT aerially. So far, health and roots look great. For best uptake, little or no dew and temperature (degree F) plus humidity (%) should add to less than 140. Getting to the underside of the leaves is a goal of some ground rigs. Be aware that fungicides also disrupt bacterial colonies in the soil.

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We use approach prima on all corn and seed beans. Approach and leverage 360 on all beans

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Fungicides will almost always pay you back.  Just depends on how much. I like to go during pollination if possible.

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A good webinar was released on this topic recently. If you have 20 minutes, listen to https://emergence.fbn.com/new-webinar-fungicides-101-why-apply-a-fungicide-on-corn

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In heavy Tar Spot area in NW IL we saw significant bushel increase with fungicide as well as standability.  Our check strips w/o laid over or had to be picked off ground.  Paid for itself and then some.

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I recommend to never use a generic fungicide.  The generics use a less quality fungicide and won't work as well.   Last year we used Trivapro and sprayed at tassel, however it is labeled to spray before tassel, which helps eliminate the mess the tassels make all over the sprayer.  Our crop consultants said that we had the healthiest corn they saw all year.  We were the only farmers in our area that we knew of that used Trivapro.

Answer

Typically first brown silk is the best timing if you are going to hit it once.

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Generic quilt xl is around 6$/ acre at 10.5 oz rate. Ive gotten to the point that leaving test strips at brown silk cost you money in lost revenue and a half rate at v5 has become standard operating procedure as well. Plant health is everything, whether its a wet year or a dry year. Corn cannot have a bad day.
 Just do it, it pays. Period.
 And while you are at it, throw in 3 oz of a cheap insecticide.

Answer

Last year was our first year with fungicides on corn.  We bought our own high clearance sprayer to do it.  left a test strip in every field.   On average  we gained  30 bushels.  In bottom fields it was more like 50 bushels due to heavy fogs. We just used the cheap generic quilt excel for the $6 an acre and an insecticide.  This year southern rust scared us and we bought trivapro.   Looking back  now would of just went the cheap route.   Weather turned dry, not much humidity to get it going.

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Is it worth spraying fungicide on corn at or just after tassel?

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