Effects of Humi[K] on Potatoes

Effects of Humi[K] on Potatoes

Earth Smart Solutions is an authorized distributor of Humic Growth Solutions (HGS).

Humic Growth Solutions is a world leading manufacturer and supplier of bio-stimulant products. Specializing in the wet chemistry extraction of humic and fulvic acids, Humic Growth Solutions offers activated bio-stimulants and fertilizer supplements designed to produce higher quality crops in order to maximize crop yield.

Field Trials:

HGS conducted field trials using Humi[K] ES on potatoes.

Humi[K] ES was formulated as a source of sulfur that combines elemental sulfur with humic acids to enhance nutrient use efficiency. Humi[K] ES can also be used as both a source of plant nutrient sulfur and/or as an amendment for correcting alkali soils.

Russet Burbank Potato fertility field trials for the 2020 crop year were conducted by Dr. Tim Maloney in Whitewater, Wisconsin, USA.

The trials utilized 4 treatments and 4 replications. The S level at this field was 2.1 ppm.

The objectives were to apply various Tiger-Sul products, along with Humi[K] ES to compare the results with the grower’s standard fertility practices.

Here we will emphasize Dr Maloney’s summary evaluations. These evaluations encompassed one-year study results on Humi[K] ES, as compared to Tiger XP and Tiger 90CR and evaluated yield, quality parameters, and return on investment (ROI).


Review of comprehensive harvest data, encompassing different tuber sizes, culls, individual plot yields, total yields, and qualities by Dr. Maloney demonstrated appreciable numerical differences. These specific differences were observed in Humi[K] ES in comparison with Tiger 90CR and Tiger XP.

  • Individual plot tubers were 6% and 3 % better respectively.
  • There were slightly more culls but greater quantities (4-6 and 6-10 oz) of harvested tubers, respectively.
  • Marketable tubers were 5% and 3 % better. These will be calculated as 2,979 pounds (29.79 sacks) and 1,511 pounds (15.11 sacks) respectively.
  • The price of a 150 lb. carton of potatoes in Wisconsin is $10. Let us assume the grower has 300 acres of potatoes with an average of 2,245 lbs. (22.45 sacks) in terms of yield increase. He will net the total of $44,900 in additional income.

Learn more about this study here.

Learn more about Humi[K] ES here.

Field Trials

Below are results of field trials using Humi[K] WSP on potatoes.

Humi[K] WSP was designed to be mixed with water to produce a liquid humic concentrate with no insoluble material remaining. The resulting organic solution is compatible with many liquid fertilizers and micronutrients.


An Overview of 2014 Potato Field Trials using Humi[K] WSP

Assorted research demonstrates that:

applying humic in different stages of potato growth (along with any other crops) will create more yield and quality

In plots tested, HGS documented:

  • major healthy stolons
  • great tuber initiation
  • increased tuber bulking
  • better yield
  • superior quality

HGS has also heard from many growers that potatoes treated with Humi[K]:

  • exhibited better storability
  • minimal hallow heart
  • minimal shatter bruise

They have had similar results in Brazil with a plethora of potato studies, namely good yield and quality, water use efficiency, and ROI.

Learn more about this study here.

Learn more about Humi[K] WSP here.

Please contact us at 1-866-444-7174 or via email at info@earth-smart-solutions.com if you have any questions and for more information on our products.


Humic Growth Solutions