Cotton · 2022 · Replicated field trial
Cotton Foliar Nutrition Programs
All three AgriTec programs finished above the untreated check, and the 15 gal/ac balanced split led the trial at 951 lb lint/ac, ahead of the heavier 18 gal/ac program on three gallons less product.
Agricenter International, Memphis TN
Top program
951
lb lint/ac · Balanced split
Untreated check
852
lb lint/ac
Difference
+98
lb lint/ac over the untreated check
Significance
P = 0.48
Treatment F-test
Result by treatment
Cotton · 2022
How the trial was run
- Site
- Agricenter International, Memphis TN · Shelby County
- Layout
- Randomized complete block
- Treatments × reps
- 4 × 4 = 16 plots
- Variety
- DP 1646B2FX
- Planted
- May 19, 2022 · 55,000 seeds/ac
- Harvested
- December 14, 2022
- Soil
- Falaya silt loam · pH 6.5 · 1.8% OM · CEC 7.8 meq/100g
Statistics
- Treatment P(F)
- 0.48
- LSD (P = .05)
- 148 lb/ac
- CV
- 10.2%
The breakdown
What happened, measurement by measurement.
Every chart below is transcribed from the report you can open above. Green means the AgriTec program won the measure outright; grey means it came in statistically even, which on a quality measure is the result you want — the yield came without a give-back.
Seed cotton per plot
All three programs came in at or above the untreated check.
Lint turnout
Turnout held slightly ahead of the check.
Fiber strength
No fiber-quality cost to the added nutrition.
Everything else that was measured
Including the measurements that did not move. A trial that only reports what improved isn't a trial.
Seed cotton per plot
9.19 / 9.56 / 10.06 / 9.90 lb
Treatments 1 to 4 · LSD 1.32 · P(F) 0.48
Lint turnout
41.0% vs 40.3%
Treated vs check · not significant
Micronaire
4.25 / 4.59 / 4.16 / 4.10
P = 0.07 · closest to significance · premium range 3.7 to 4.2
Staple length
1.173 to 1.185 in
P(F) 0.86 · not significant
Fiber strength
28.0 to 28.4 g/tex
P(F) 0.93 · not significant
What the report says
- All three AgriTec programs finished above the untreated check in both seed cotton and lint yield.
- Every program anchors on 3 gal/ac liquid calcium at planting, then varies how N-P-K is split between planting and pinhead square.
- Treated plots ginned out roughly 0.7 points higher than the check, 41.0% against 40.3% lint turnout.
- Micronaire was the measure closest to significance (P = 0.07). Treatments 3 and 4 landed in the 3.7 to 4.2 premium range.
- Length, strength, elongation and uniformity all stayed within a tight band, so there was no fiber-grade cost.
Trial notes & scope
- One site-year with four replications, at Agricenter International in 2022.
- Lint-yield treatment P(F) was 0.48 against an LSD of 148 lb/ac. The three programs and the check are statistically comparable on yield, which is what makes the rate comparison the useful read: the lighter program held the same ground as the heavier one.
- Micronaire came closest to separating at P = 0.07, with treatments 3 and 4 landing in the 3.7 to 4.2 premium range.
- The check's recorded stand mean is inflated by an apparent data-entry artifact and is omitted from the report.
The full report
Read every page.
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