APSA-80® & Nutriplant® AG Potato Trial Research Summary (2023–2024)
Transparent review of Colorado State University San Luis Valley Research Center trials evaluating yield response under full and reduced irrigation protocols.
Trial Overview
Potato trials conducted at Colorado State University (2023–2024) evaluated Russet Norkotah 296 yield under full irrigation (16.5 inches) and reduced irrigation (14.0 inches). In the 2024 trial under full irrigation, APSA-80® alone produced a 27 cwt/acre sellable yield increase, while the combined APSA-80® + Nutriplant® AG program produced a 68 cwt/acre increase over untreated control blocks.
Research Location & Trial Design
Location: CSU San Luis Valley Research Center, Center, CO
Crop Variety: Russet Norkotah 296
Replications: 4 replications per treatment block
APSA-80® Rate: 30 oz/acre applied to soil
Nutriplant® AG Rate: 14 oz/acre applied foliar at 6–8 leaf stage and 4 weeks later
Irrigation Levels: Full Irrigation (16.5 in total rain + irrigation) vs. Reduced Irrigation (14.0 in total)
In our opinion, the value of this trial isn't the headline number — it's the fact that the program was tested with four replications under documented conditions.
That gives you a real benchmark to compare against your own soil, water, and crop variety.
2024 Full Irrigation (16.5") Yield Summary
| Treatment | Sellable Yield Increase | Reported Treatment Cost | Est. Net Value ($6.60/cwt) |
|---|---|---|---|
| Untreated Control | Baseline (0 cwt/acre) | $0.00 | Baseline |
| APSA-80® Alone (30 oz) | +27 cwt/acre (+10.0%) | $21.70 / acre | +$156.50 / acre net |
| APSA-80® + Nutriplant® AG Program | +68 cwt/acre (+25.3%) | $46.75 / acre | +$402.05 / acre net |
Scientific Guardrail & Context
These data points represent a specific Colorado potato trial design. They should be used to guide agronomic discussion rather than taken as universal yield promises. Always review local soil chemistry, water salinity, and crop varieties with your PCA. Read our Amway company background for manufacturer history.
Authoritative Research Resources
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Frequently Asked Questions
Where were these potato research trials conducted?
The research trials were conducted during the 2023 and 2024 growing seasons at the Colorado State University (CSU) San Luis Valley Research Center in Center, Colorado on Russet Norkotah 296 potatoes.
What were the key treatments tested in the 2024 trial?
The 2024 study evaluated: 1) Untreated control, 2) APSA-80® alone at 30 oz/acre, and 3) APSA-80® (30 oz/acre) combined with Nutriplant® AG (two 14 oz/acre applications) and Nutriplant® SL under full irrigation (16.5 inches).
What yield increases were reported in the combined treatment?
The 2024 trial summary reported a 68 sellable sack per acre increase (a 25.3% increase over the untreated control) for the combined APSA-80® + Nutriplant® AG program under full irrigation.
Do trial results from Colorado guarantee performance in California?
No. Research trials are historical examples under specific CSU trial protocols and climate conditions. Results vary by soil type, weather, crop variety, water quality, and application timing.
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