"My name is Dan Pringel and I have been farming tomatoes, peppers, and cantaloupe for the last 40 years outside of Marysville, California. I sell mostly to very demanding restaurants that only want the best organic quality.

I am very much a hands-on organic farmer who closely watches the results of all the changes I introduce to the growing process. I carefully watched for results of the ACTpromin calcium oxide with trace elements and expected good results.

But I was more than surprised at the difference. The veggies and especially the tomatoes now taste much better, becoming a lot sweeter. They also definitely have a much longer shelf life.  My fruit trees also responded really well with similar results. I will keep using this wonderful soil supplement and am really happy to have found it.

 I used to have a very serious problem with Tomato mold and did all the standard attempts to lessen this problem until finally, the Davis University Ag department told me to just stop using that land for 10 years and then the infestation of Phytophthora infestans fungus may go away.

Well, I realized the organic calcium oxide crushed rock seemed to eliminate this problem and so thought i would give it one more go. To my amazement after spreading it well into the soil on the same land and watering it in. The tomatoes have dramatically not had leaf mold this year. Even though the weather has been more damp than usual.  I wish the academics at Davis investigated this as I am sure they could pass on this valuable advice. But as I have done my research it appears that the academic ag world doesn't even realize there is a rock that has a high percentage or organic calcium oxide. I credit this unique rock for the results I am getting.

Dan Pringel,
Marysville, California

"Dear Randy, I apologize, I missed the corner associated with the diagonal. The area, which is essentially two irregular triangles, will depend one the length of the legs associated with the hypotenuse 190.5 ft (63.5 yards). Fortunately, there are only three possible outcomes (all reasonably similar, units in feet):

175.8 and 163.2 corner = 21936.19 sq ft = 0.503586 acre

7000 lbs / 0.503586 acre = 13900.32 lbs/acre

175.8 and 136.2 corner = 21717.65 sq ft = 0.498569 acre / 7000 lbs =

7000 lbs / 0.498569 acre = 14040.2 lbs/acre

175.8 and 126.6 corner = 21694.57 sq ft = 0.498039 acre / 7000 lbs =

7000 lbs / 0.498039 acre = 14055.13 lbs/acre

Considering 9,000 lbs/acre, an average increase of 55%. Quite substantial.

I tried it in CAD, but it's tough without a bearing on a corner. I don't think we need it when we have the above.

Please contact me at any time with questions or concerns."

Best Regards,

Environmental Project Manager


“We live on a large farm on the outskirts of Fernley, NV. A consultant advised us to use ACTPROMIN in our fields to help conserve water. What we found was, not only did the introduction of this mineral-rich calcium oxide into the soil conserve water but to our amazement, our fruits and vegetables more than doubled in size to what we were used to. This stuff is amazing, and just what we, as farmers, need.”

Warren Rhodes,

"I have been using ACTpromin for several years. As an organic gardener, I have always been a big believer in crushed rock dust as a booster to the soil's microflora and plant health. What surprised me was the increase in the size of the vegetables and the lack of plant disease compared to earlier years. The results I have got from other crushed rock materials never came close to this improvement in production. I even mix some into my compost and worm farming areas and notice the wrigglers seem to love concentrating in the areas I have scattered it."

N.H Encinitas, CA

"An 18 month research report published by the University of Nevada Agricultural Department from their Greenhouse Experiment Station. has shown the spectacular results of ACTPROMIN and its ability to enhance soil fertility.

On page three the conclusion and testimonial peer-reviewed by Christina Ogono stated:


"In support of our hypothesis , this study shows that calcium oxide is extremely effective in promoting soil fertility, nutrient availability, and plant growth. It proves how the application of CaO in the soil leads to immediate increase in soil pH, decreases in iron content, and immediate increase in phosphorus content that is otherwise limited in acid soil high in iron content. Calcium oxide can be more effective when used with fertilizer to release or make available limited nutrients like nitrate. The lack of change or increase in Zu, Cu and Mn could be attributed to the increase in soil pH from acid to neutral and mainly alkaline soil. Calcium oxide was effective in promoting plant growth when used alone or with fertilizer. This study is on-going to assess the long-term effects of calcium oxide on soil chemistry, nutrient availability, and plants growth in acid and alkaline soil.

Forage plant biomass was measured after harvesting in fall 2018 and fall 2019 to assess the immediate and long-term effect of calcium oxide on the forage yield. Alfalfa yield increased from 2018 to 2019 for CaO is 140%, CaO x FF is 100%, FF is 100% and CT is 73.7%. White clover yield increased for CaO is 101%, CaO x FF is 100%, FF is 100% and CT is 75.9%. Smooth brome grass yield increased for CaO is 88%, CaO x FF is 159.1%, FF is 71.8% and CT is 54.4%. Tall fescue yield increased for CaO is 84.5%, CaO x FF is 181.1%, FF is 146.3% and CT is 53%. Overall, calcium oxide treated soil increased forage growth much more than other treatments.

It is relevant to add that this ongoing extensive research to educate the world about this unique organic natural calcium oxide by the University of Nevada is not paid for by us. But is being pursued independently by the agriculture department due to the past exciting results and the consequent recognition for the need of non chemical fertilizers.

The Actpromin research report summary can be reviewed here.