It’s go time here in The South of Iowa. High moisture corn coming off for feedlot needs.

My wife is long-term sub teaching biology at HS. She’s teaching scientific discovery by having students perform trials on growing beans (control/treatment). One student plans to treat his beans with Monster drink. Future field research scientist in the making.

At the @BioSTL AgTech Innovation Showcase at @NWMOSTATE today for @Sentinel_Ag. 4 of 5 panelists replied AI was the next big thing to bet on in Ag.

Combining in a Year with Heavy Southern Rust and Leaf Diseases -

UPDATE: Added NDRE values from August 25 and 28 to this chart. Non-treated red (point 23) is dropping very fast, about 1/2 the NDRE value of nearby treated blue (point 24). It appears the farmer left a check strip through the middle of the field (!).

One way to interpret this - if your yield estimation model used the August 13 image you probably predicted higher yield potential than if you'd used the August 23 image.

Due to cloudy conditions in July (rained 9") we didn't get good Sentinel 2 images for most of the month. Not sure what the peak around July 4 was. The 3 images represent the right 3 vertical lines on the NDRE graph.

Southern rust quickly affects biomass and greenness. 3 RGB images (August 8, 13 and 23) of a field with/wo fungicide (upper left part wasn't sprayed). NDRE (NDVI w/Red Edge) plotted for points 23 (red, no fungicide) and 24 (blue, fungicide). 0.13 NDVI points difference.

When we review Southern Rust 2025 we’ll probably see certain varieties x fungicide programs that performed better than others. Here’s Channel 214-75 planted April 17, sprayed July 7. Pic taken Aug 26. R5.5 half milk line.

Non fungicide treated areas are showing up now in Sentinel 2 satellite imagery (8-23-25). This field (pond in middle) has a power line running along the south side, plane didn't want to get too close.

We took @agrimodis whole plant samples at R4 about 2 weeks ago in another rep of G10L16 at 34K. This included DM biomass analysis to get lbs/ac. I don't know if the typical ratio ranges work for whole plant vs leaf only but I included them for discussion.

I don’t have soil tests but whole plant tissue analysis at V15 and R4 of G10L16 at the 5 N rates suggest sufficient or above P and K levels. TBH I’ve seen fields with much worse S Rust levels than this; if their K levels are lower (typically are) it makes sense that N:K is off.

Ear leaf samples from the N small plot trial. 34K, single rep, pulled from the middle of the outside row. Did get fungicide around Aug 10-12 (~R4) What do you notice about disease pressure & species by N rate and hybrid?

View from the cab at 32mph. @BobGunzy

@yieldBee We have used @Sentinel_Ag for the past 4 years. Of all the products we’ve used over the years, this is the only one that consistently proves itself at harvest that it actually works.

Based on nitrate strip test, 500 ppm NO3-N is 0.05% N in the water. 1000 gallons of this would provide 4.17 lbs N at 500 ppm. Does anyone have actual lab measurements of Green Lightning output?

Here’s a 24 hour update on this problem @tweets_USCHI

I’m not trying to be a whistleblower or anything but I came face to face with a problem that every farmer or consumer in the United States and Canada needs to me aware of. This is an absolute joke and a mess but yet as always us common folk are caught in the middle of. It’s going

Corn silage season has commenced. This is 115 CRM planted April 11 in 15” rows with no fungicide. Lots of S rust (see chopper) and some tar spot. 65% MC and half milk line. Yield estimate via weighed ear method. Very good yields despite disease pressure.

My daughter has a unique way of telling me which tire was going flat on her car.