Case study · Peanut

Peanuts live or die on calcium in the pegging zone. Keep exchangeable Ca available through pod fill and defend the pegs with boron.

Region Southeast peanut belt · Auburn University trial protocol
Scope Peanut acres · pegging-zone calcium read
Outcome Auburn University trial · 3,800 lb/ac control → 4,900 lb/ac full program (+29%)

The numbers behind it

The peanut trial that proves it works.

Auburn University · 2023. Full results in Peanut Production Catalog 2024-2025.

YIELD LIFT

+0%

vs control plot

BEST PLOT

0 lb/ac

Full program

TREATMENTS

all outperformed control

CONTROL

0 lb/ac

Control

Auburn peanut trial: Ca-led program documented above-average pod count.

The local challenge

Peanut yield is written in the pegging zone. The peg draws calcium directly from the soil around it, not from the leaf, so exchangeable Ca has to stay above roughly 500 ppm and base saturation in the 65–75% band right through pod fill. Miss that window and you get pops, unfilled pods, and a light wagon.

Boron is the second lever. Peanuts respond strongly to foliar B from flowering through pod set; short boron shows up as poor pegging and hollow-heart. Sulfur rounds it out by driving the oil and protein that grade the kernel.

What Auburn documented

AgriTec partnered with Auburn University on documented peanut trials of the calcium-led program. The untreated control made 3,800 lb/ac; the full program made 4,900, a +29% lift with a documented above-average pod count.

A Texas grower ran it on their own ground: "Our yields increased 40% in our perennial peanut fields from the previous year after using Pro-Cal and 3-18-18+. It was the best year we have ever had."

Why liquid calcium instead of gypsum alone

The old answer is a heavy gypsum broadcast at pegging. It works, but it's slow, dusty, and reactive to moisture timing. Pro-Cal and Advanced-Cal put available calcium into the pegging zone on a schedule you control: a pre-plant foundation pass, a chelated in-furrow shot with micros, then maintenance Ca as pods fill.

BoroLift at flowering defends the pegs; Pro-Sul carries the oil and protein. Every pass is low-salt liquid that rides with equipment you already run.

The program · three tiers

Good · Better · Best.

GOOD

Pegging-zone calcium foundation

Pre-plant · broadcast

Pro-Cal

3 gal/ac

Foundation Ca + pH
At planting · in-furrow

Advanced-Cal

1 gal/ac

Chelated Ca + micros

Outcome

Puts available calcium where the peg pulls it, the base of the Auburn program.

BETTER

Add boron for pegging · RECOMMENDED

Pre-plant · broadcast

Pro-Cal

3 gal/ac
At planting · in-furrow

Advanced-Cal

1 gal/ac
Flowering · foliar

BoroLift

1 gal/ac

Defends pegging + pod set
Pegging zone · maintenance

Pro-Cal

1–2 gal/ac

Holds Ca through pod fill

Outcome

Calcium foundation plus boron-defended pegging through fill: the full Auburn protocol that reached 4,900 lb/ac.

BEST

Full system · calcium, boron, and kernel quality

Pre-plant · broadcast

Pro-Cal

3 gal/ac
At planting · in-furrow

Advanced-Cal

1 gal/ac
Flowering · foliar

BoroLift

1 gal/ac
Pegging zone

Pro-Cal

1–2 gal/ac
Pod fill · foliar

Pro-Sul

2–4 gal/ac

Oil + protein for grade

Outcome

Every yield and quality lever: pod count, fill, and kernel grade. Best fit for irrigated or high-value contracts.

Logistics · Free shipping on tote orders. Pegging-zone calcium is timing-sensitive. We'll map the passes to your planting date and build the ROI around your contract price.

The process

From your soil test to your program. Five days, max.

No back-and-forth, no upsell calls, no rate cards. Send the lab report, get a custom program. Free.

01 Same day

You send your soil test

Snap a photo of the lab PDF, upload a CSV, or email the file. We accept anything: Midwest Labs, A&L, Waters, Servi-Tech, you name it.
02 Day 1–2

An agronomist reads it

Not a sales rep. A real agronomist trained on the soil science. They look at every column: pH, base saturation, micros, organic matter.
03 Day 3–5

We write your program

Field-by-field plays with product, rate, timing, and the rationale behind each call. Multi-tier (good/better/best) so you choose the spend.
04 When it lands

You get the document

Same kind of multi-page program you just flipped through: branded, redaction-free, priced to today's market. No charge. No catch.

We built that one for free.

Want one for your fields?

Send us your soil test. An AgriTec agronomist will write the same kind of program for your acres. No charge, no call tree, priced to today's market.

Send our agronomist your soil test → Peanut system page

Peanuts live or die on calcium in the pegging zone. Keep exchangeable Ca available through pod fill and defend the pegs with boron.

The peanut trial that proves it works.

The local challenge

What Auburn documented

Why liquid calcium instead of gypsum alone

Good · Better · Best.

From your soil test to your program. Five days, max.

You send your soil test

An agronomist reads it

We write your program

You get the document

Want one for your fields?