russet potatoes yield case study

Case Study: Russet Potatoes

Jemmett Consulting and Research Farm | Parma, Idaho - 2022


Increased Yield on US#1 Potatoes


Humic Land™ Application on Potatoes

Soil Type

Sandy Silt | Organic Matter 1.2 % | pH 7.7


To measure the effects of reducing Fertilizer inputs by -30% while using Humic Land™ on Russet Potatoes


2 Liters /Acre (dilution ratio 1:250)


Parma, Idaho

Trial Size

36 sq. ft. per block


April 21st - August 22nd 2022

Irrigation Type


Application Date of Application Stage Dilution Ratio
1st April 20th, 2022 Planting 1:250
2nd May 26th, 2022 First Hilling 1:250
3rd June 8th, 2022 Second Hilling 1:250
4th July 7th, 2022 Row Closure 1:250
Fertilizer Rate
Humic Land™ Rate

(lb/ 36 sq. ft.)
Compared to Control
(lb/ 36 sq. ft.)
(lb/ 36 sq. ft.)
Compared to Control
(lb/ 36 sq. ft.)

Control Block 1000 0 7.8 21.83 11.313 - 8.363 - 2.15
Control Block
w/ -30% Fertilizer
700 0 7 16.91 8.688 (-23.20%) 5.880 (-29.69%) 2.338
Humic Land™ Block 1000 0.5 8 23.44 14.388 +27.18% 6.713 (-19.73%) 2.338
Humic Land™ Block
w/ -30% Fertilizer
700 0.5 7.8 22.19 12.163 +7.51% 7.750 (-7.33%) 2.275

Humic Land™ - Marketable Yield (pound/36 sq. ft.)

Totals: Marketable Yield (pounds/acre)

Treatment Marketable Yield Compared to Control
Control Block 285.68 -
Control Block w/ -30% Fertilizer 211.63 (-25.92%)
Humic Land™ Block 306.37 +7.24%
Humic Land™ Block w/ -30% Fertilizer 289.13 +1.21%

Humic Land™ - Total Marketable Yield (pounds/acre)

russet potatoes harvested yield

Final Results & Observations

Jemmett Consulting and Research Farm | Parma, Idaho - 2022


Increased Yield
on US#1 Potatoes


  • A 7.51% yield increase was realized in US#1 on the Humic Land™
    block while fertilization was reduced by -30%
  • A 7.24% yield increase was realized in total marketable yield on the
    Humic Land™ block with normal fertilization block
  • The Humic Land™ block with a -30% fertilizer obtained the same
    total marketable yield
    as the normal fertilization block

Straight From The Grower

Jemmett Consulting and Research Farm | Parma, Idaho - 2022

The trial was conducted in grower field conditions and all required aspects of the potato trial were fulfilled according to protocol request and requirement. Ivory Russet potatoes were planted into differentially fertilized potato plots. Plots were monitored throughout the season to determine any differences in plant growth or development. Slight differences were seen in color and recorded as vigor on a scale of 0-10. Yield was taken at the end of the trial when 80% of the tops had desiccated by taking the center ten foot of row out of each plot. Yield showed a significantly lower yield in the 30% reduced N treatments without Humic land. All treatments did equally as good as the full N check, including the 30% N reduced treatment with Humic Land.

- Eric Jemmett | Owner, Jemmett Consulting and Research Farm

Humic Land™ Case Studies Results

What Is Humic Land™ ?

Increases Yields | Improves Nitrogen Uptake | Reduces Watering Costs

Humic Land™ is an organic soil amendment that increases your soil's ability to cycle nutrients to relieve your fertilizer dependence.

Unlike other Humic Acids available on the market that originate from Lignite or Leonardite, Humic Land™ comes from Black Peat.  A vital distinction, as not all Humic Acids are made equal. Humic Land™ is made from peat, using cavitation and fine grinding without any chemicals used in the production process.

The resulting product is a peat gel that is 100% Organic which restores soil health and prevents Nitrogen Leaching.

Rebuild your soil with Humic Land™ directly at the rhizosphere where it matters most by improving nitrogen retention. When nutrients are readily available as your crops needs them... yields increase.

Ready For A Record Breaking Harvest?

  • Overall Healthier Crops
    • Increased Stress Resistance To Plants
    • Improved Root Mass & Root Structure
    • Reduction of Fruit Sunburn
  • Cut Overhead Costs
    • up to -30% Reduction of Watering Costs
    • up to -30% Reduction of Fertilizer Requirements
  • Increased Profit Margins
    • Yield Increases - Boost Overall Revenue
    • Reduction of Input & Water Costs - Significantly Lower Your Overhead Costs
  • BBB - Better Business Bureau Rating A+
  • florida fruit and vegetable association
  • approved by ecocert inputs
  • CDFA - regisetred organic input material
  • western growers
  • OMRI listed for organic use