Verified FBN Member (IN)
Agronomy

What population is everyone planting corn, and what row spacing?

Verified FBN Member (IN)

32,000 on 30” centers non- irrigated.

Verified FBN Member (AR)

30k on 30’s irrigated. 24k on 30’s dry

Verified FBN Member (IL)

In central Illinois we plant at 34,500 but planning to increase this year to around 36,500. Had FBN non gmo hybrid last year and ears filled all the way to the tips so going to increase population. Seed cost is lower with these varieties and thinking with normal rainfall could pick up a few bushels per acre in yield.

Verified FBN Member (SD)

We variable rate from 16-28000 in dry land in South Dakota on 20" rows. Still learning

Verified FBN Member (MO)

20 inch rows. Variable rate from 28 to 38 based on soil type. 9 to 14 percent slopes erosion control is excellent added benefit for us. Beans same row spacing In row plant to plant spacing increased allowing us to push pops higher on better dirt

Verified FBN Member (MN)

38,000 on 20” rows

Verified FBN Member (IL)

30” rows, planting Rx varying from 33K to 37k.

Central, IL; heavy soils.

Verified FBN Member (ND)

30" rows centeral ND

2018 flat poped 29-31k collected crop insurance

2019 VR population 18-24k personal best crop.

Verified FBN Member (SD)

In eastern sd. Variable rate from 32-38k 30in rows non irrigated

Verified FBN Member (MN)
(edited)

You can't just pick one population and go. Depends on the hybrid, the soil type and yeild goal. We have hybrids that yeild 220 bushel at 30,000 and have other hybrids that yeild 220 at 38,500 on our farm. All on 30 inch.

Verified FBN Member (ND)

Variable rate is the only way to go, regardless of where you are at in the U. S. We have a lot of elevation change in our fields and we vary from 20K to 32K and usually average around 27K to 28K, depending on the field. In 2018, our farm average was 200 bu/ac and average seed drop was 27.5K. (SE North Dakota...out of the RRV). It takes time to get to the right population for each zone, but it takes less population than you think to hit yield goals. Less population results in less stress during times with less moisture. We take the seed savings and roll it into fertilizer. My belief is that guys should have less population and more fertilizer and you will have less stress on your corn.

Verified FBN Member (IA)

34,000 on 30 inch rows in central Iowa. Going to plant some prescriptions next year on some fields we haven’t done before so will see how that goes.

Verified FBN Member (OK)

On full irrigated I’m planting 25-32k on 30” spacing, on dryland it’s 12-14k on 30” and on semi irrigated it’s 15-19k on 30” centers

I’d really like to try some 60” corn on dryland this year, I may just shut off some row units for a pass or two and give it a try.

Verified FBN Member (MS)

40” dry land corn 28k and cotton 44k. We avg around 150 bushel corn and 2ba/acre cotton

Verified FBN Member (IA)

36K on everything

Verified FBN Member (IA)

30" row spacing

Verified FBN Member (NE)

29-33k variable rate on irrigated 36” row spacing

Verified FBN Member (NE)
(edited)

Mostly 28k dryland and 34k irrigated. Looking for more flex hybrids to lower the irrigated <32k for better interseeded cover crops at V1-V4 for more sun light into the canopy. All 30” rows

Verified FBN Member (CO)

I divide my yeild goal by 7

200 bushel is about 28,500

250 is closer to 36

On better ground I thing you could divide by 7.5 or even 8 but a few more seeds per acre is good insurance. I plant twin row 30's

Verified FBN Member (NE)

How did you come up with 7 to divide by?

Verified FBN Member (CO)

My own population plots. I do one every year with 2 verities to keep it simple. Flex hybrids can change the data but doesn't seem like there are many out there anymore that really flex like they use to. Corn can produce 10 bushel per 1000 seeds but not consistently. At least my findings

Verified FBN Member (MN)

Variable rate 28-35,000 irrigated 22 dry land

Verified FBN Member (IA)

15" Corn- average 37,000 pop, VRT most anywhere from 24 -38K

Verified FBN Member
Response deleted by author
Verified FBN Member (NE)

33,500 irrigated in 36” rows

Verified FBN Member (KS)

Variable rate 16-24K on dry land in 30” rows trying lower pops every year with more flex

Verified FBN Member (MN)

Variable rate all acres corn and soybeans with range from 26000 to 36000 on corn and depends on variety and and field in 22 inch rows, 80 to 130 on soybeans, maybe moving lower on soybeans if we figure out the way to get more branching and pods per plant soybeans also planted in 22 inch

Verified FBN Member (IA)

We plant from 34,000 to 36,000 on 30" rows depending on variety. We plant early and all corn on corn and hope for a final harvest stand of 32K to 34K depending on the field.

Verified FBN Member (MI)

34k on 30"

Verified FBN Member (MI)

we variable rate everything but a general average is 34000

Verified FBN Member (MN)

32 to 33,000 pop on 30 in rows

Verified FBN Member (ND)

30k on 22"

Verified FBN Member (CO)

10-15K on 30". Low rainfall, low pop.

Verified FBN Member (NE)

Irrigated 24-34K on 30” rows

Dryland 12-15K on 30” rows

2019 dryland yields went above 170bpa whole field average

Verified FBN Member (SD)

25-26k on 36" rows dryland SE SD

Verified FBN Member (OH)

30” rows in central OH, 33.6k was our best ROI over the past 8 years of variable rate on all of our soil types. Non irrigated. We plant rate based on historical yield potential not soil types since elevation plays a big part in available N and water. We vary most fields between 27-34,000

Verified FBN Member (MN)

Variable Rate on some fields, but generally 36k on 20 inch rows. Non Irrigated.

Verified FBN Member (IL)

36.5 in ec Illinois good ground / 33.5 to 34 on lesser soil, there are a few 20" and a couple split row here but 95% are good old fashion 30". The prescription rates are available and may be viable but so far my tech savvy is not up to it.

Verified FBN Member (OH)

35,00 in 20’ rows

Verified FBN Member (IA)

30" rows variable rate last couple of years 24000-36000. We have been doing our own population trials. We are finding that we get very similar yields at lower populations across all soil types.

Often the highest yielding population was far below the average population. Many times under 30000 plants /acre. We are going to keep experimenting, the results have been surprising to us.

One big bonus besides the seed savings has been much less lodging. Except in the trials we are not going to plant anything above 32000 next year.

Verified FBN Member (WI)

We are looking at planting 60in Corn this year with a cover/forage between rows. Anyone have experience with this?

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