Area Agronomist for Pioneer in Southwestern Ontario. Tweets are my own and do not represent my employer.
Dorchester, Ontario
Joined April 2015
- Tweets3.5K
- Following445
- Followers1.2K
- Likes16.7K
John Seliga retweeted
"This study reinforces the importance of rotating resistance sources to manage SCN virulence and population density, with PI 88788 and Peking showing distinct resistance mechanisms suitable for rotation."
From the @PlantDiseaseJ article doi.org/10.1094/PDIS-06-25-1โฆ by Senyu Chen and @SWMNpest.
@SoyResearchInfo @TheSCNCoalition @plantdisease @activeplantnema @SON_nemaweb #USSoy
ALT Soybean field with stunted and yellowish plants due to soybean cyst nematode.
John Seliga retweeted
Throw back to 1998! Stepped into a non-GMO corn field this week in PEC. If anyone thinks that European Corn Borer has become extinct, think again. From past experience, this kind of pressure could easily translate into 20bu yield loss and lots of harvest headaches.
John Seliga retweeted
Despite current negativity to PSA testing, my two-cents' worth is to pay the cost and get tested regularly. Early detection of prostate cancer thanks to PSA testing, followed by prompt surgery and later radiation, is why I'm still alive, 20 years later.
theglobeandmail.com/gift/fa6โฆ
John Seliga retweeted
Do # of rows around matter????
It is the kernel counting season for those excited (or concerned) about yields this fall.
While rows around is part of total kernels and the yield equation, some VERY high yielding hybrids often times have 14-16 rows around.
Kernel size/weight is a HUGE factor in the yield equation and many of today's Pioneer hybrids have what we refer to as kernel flex.
Kernel flex allows for larger & heavier kernels during favorable weather & high nutrient availability late into grain fill. This is why the "divide by" factor is so important.
While seeing 24 rows around the other day excited me... keep in mind the world record holding hybrid of 14830 typically has 14-16 rows around.
Check out the 2025 summary of average rows around in EC IA.
So don't be concerned if you are seeing some 14-16 around ears and your neighbor is bragging about 20+... the yield can still be there!!
Contact your local Pioneer Sales Rep with questions and your "divide by" # in your yield estimates.
John Seliga retweeted
๐ฑ Waterhemp: A Weed Built for Survival
Once #waterhemp is >3โ tall, the upper canopy shields new growing points from contact herbicides, while multiple nodes reduce the chances of systemic herbicides reaching every growing point.
Add its incredible genetic diversity, prolonged emergence, rapid growth, prolific seed production, and seed retention through harvest, and itโs easy to see why this weed evolves and spreads so quickly.
Effective soil residual herbicides + timely effective POST applications to small (<3โ) #waterhemp + non-chemical weed management strategies are all essential for sustainable long-term waterhemp management.
John Seliga retweeted
This is just the beginningโฆ Thanks to @RitchieBros & Rowcliffe trucking this is possible! This container is sitting at our farm right now filling up with over 10+ pallets headed this way and other goods from SW Ontario residents dropping off donations. This is incredible! The buzz of community is strong! This container is Thunder Bay bound next week
John Seliga retweeted
Disease Tracker County Level
Many have requested a map where one can see their local better. This map has the county average disease risk for Pioneer plots and customers fields that are in Granular Insights.
Hopefully this makes it easier to see risk in your local geography.
Many after last year are very concerned about Southern Rust... as you can see this is a more "normal" Eastern/NE IA year..
Southern Rust risk very low at this time... Tar Spot & GLS along with NCLB the main concerns.
Every Pioneer customer can create a Granular Insights Account and access these maps at any time... Along with imagery of your own fields!!!
Contact your local Pioneer Sales Rep to get signed up for Granular Insights!
John Seliga retweeted
Spraying? Be WIND aware.
Products can be swept away in high winds, but if there's no wind at all, spray particles may hang around. For best results, spray when wind speeds are between 3-10 km/h.
Find out more at buff.ly/ZORadcp
#OntAg #BeDriftAware
John Seliga retweeted
We're back looking at a field that was sprayed with Enlist 1 herbicide last year on June 18th. This fields now in corn and has received an early post app of glyphosate + Crimson + Acuron application. VERY noticeable difference in horsetail pressure! @PioneerSeedsCA
Some pretty wicked awesome control of horsetail with Enlist 1 herbicide in this field of Z series soybeans. โฆ@PioneerSeedsCAโฉ
John Seliga retweeted
June 10thโฆ right on schedule for finding my first Waterhemp of the 2026. Good thing this corn is only 1 leaf stage.
John Seliga retweeted
Sadly, I've already heard a couple of instances this season where growers had mixing issues with their Enlist 1 and Glyphosate. Both involved induction systems that didn't get a proper rinse of clean water between concentrates. @PioneerSeedsCA #spraysafe
Here is a visual for why itโs CRUCIAL to follow proper mixing procedures when using Enlist 1 chemistry on your Enlist traited soybeans and corn #spraysafe
@PioneerSeedsCA
John Seliga retweeted
A Nebraska study found that optimum corn seeding rates differed depending on whether the goal was maximum yield or maximum profit. Peak yields occurred near 34,000 seeds/acre, while the highest economic returns were achieved closer to 28,000 seeds/acre.
doi.org/10.1002/cft2.70117
John Seliga retweeted
Local farmer in Glencoe is missing his calf and is hoping to get access to a drone with heat sensors on it. The calf is one day old. Any help is appreciated
John Seliga retweeted
"Most fungicides resulted in greater breakeven probabilities with increasing disease severity. The results emphasize that fungicide applications occurring at VT/R1 and when disease severity exceeds 5% are more likely to result in a positive economic gain."
From the @phytofrontiers's article at doi.org/10.1094/PHYTOFR-08-2โฆ.
By @NabinKDangal @badgercropdoc @baldpathologist @MandyBish1 @MartinChilvers1 @travisfaske @NDSUcerealpath @AG__McCoy @dsmuelle @rodrigobonofre @ppp_trey @alisonrISU @alabamaED @DTelenko @AlbertTenuta @cropdoc08 +others.
#corn #fungicide #ROI @NationalCorn
ALT Corn leaf with orange spores.
First @PioneerSeedsCA #PKP plot with #McAlpineSeedsLtd into some very nice soil along the Thames River. Trialing the latest advancements from our century old breeding organization. Blessed to be here for this season.
John Seliga retweeted
How Ontario is fighting back against Canada's 'worst' invasive plant insidehalton.com/news/invasiโฆ via @InsideHalton
John Seliga retweeted
Why do early planted soybeans tend to yield more & flower before the summer solstice??
This was a hot question yesterday for some reason... probably due to growers looking at the forecast & thinking they may not get any planting done until late April or early May.
Simple answer: The sooner they start flowering, the longer they are in the reproductive stage. Chart below shows April 15th planted soybeans spend 52 days in reproduction vs 37 days for May 11th plant date. A plant can only make so much yield per day. The more days it is in reproductive stages, the more yield potential it can create.
A few reasons:
1) Indeterminant soybeans are actually long night plants which require a certain night length to trigger reproduction.
2) Modern genetics in the same "maturity" group tend to flower "sooner" than varieties of the past.
3) Soybeans will start reproduction at certain physiological stages, I see typically V3-V4.
4) Warm weather accelerating growth stages also leads to early flowering.
Planting delays doesn't mean we can't have strong soybean yields, it just means there is less room for other stresses during the growing season to achieve high yields.
Check out this link from WI.
ipcm.wisc.edu/blog/2018/06/tโฆ
John Seliga retweeted
If you're planning to take a hike this Easter weekend, be aware of ticks. Happy Holidays. @growernews
