Welcome to PHD Maximum Crop
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Welcome to PHD Maximum Crop
prices and availability
Dealers who represent PHD Maximum Crop
little known ag facts
about PHD staff and contact information
testimonials and success stories


We have several OMRI approved products!!

Custom Harvesting


Click Here for Custom Harvesting Details. We have over 40 years of harvest experience!


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About PHD Maximum Crop

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ear corn


welcome to PHD Maximum Crop, LLC


Contact us at 1-402-336-3920

Micronutrient Spray and  Biological Growth Catalyst

I have been farming over 60 yrs and never ever thought I could raise crops like this, with larger yields and less inputs since using the combination of lot 125, Agzyme, and C4 we have turned some really poor ground into productive soil as we have continued to use these products we have cut our NPK applications dramatically 25gal 28% on corn 50lbs 11-52-0 with yields still better than most, soybeans with just the other three products gave us tremendous yields, plant health exceptional insect control amazing they just wanted nothing to do with those plants at all, which added up to more yield and bigger profits. Plus so many other benefits that we have seen, this program combination is truly remarkable. We will definitely be adding Enhance to our program next year and I'm sure we will bump those yields and profits again. Thanks to PHD Maximum Crop for helping us achieve these goals.
Thanks Again,
Vernon Schwab, Aberdeen SD

agzyme corn

'Take care of the soil and the soil will take care of the crop.'

Sur-Tec Video


C4C-4 Clean GreenC4

A Local Farmers Testimony to the Effectiveness of C4
Testimony from a farmer that was in an extreme drought, yet he nearly doubled his soybean crop.  After 30 years of growing Soybeans, he couldn’t believe his eyes.  He had mixed our C4 with generic roundup and had sprayed his Soybeans one time.  “The C4 treated plants have exploded, while the controls are 30% smaller and yellowed”.  “The C4 treated plants had many more limbs and were all bushed out.  The controls were just straight stalks.

More Farmer Testimonies
“Our Yields Increased by an average of 40%!”
“On all our vegetable crops C4 was a home run.  We saw bigger, better, healthier vegetables across the board.”
“C4 Increased Crop Production & Saved Money”
“We almost entirely eliminated the need for herbicide on our soybeans by using C4!”
“C4 Apparently improved sugar content of the plant substantially & actually eliminated the need for pesticides!”
“Our C4 treated Soybeans simply Out-Performed our commercial fertilized fields”
“C4 is the best investment I ever made in my crops”
“We saved over 50% on the cost of fertilizers on our crops by using C4!”

In past years, we have seen better germination, vigorous growth, healthier crops and a greater yields. PHD Maximum Crop is in the business to help you make your soils richer for healthier plants. We want to put the profit back in farming. Contact us today we would be happy to discuss the benefits of using the products we carry.


We accept Farm Plan and we can assist you with financing needs for your crop input . Contact us today to see how we can be of help to you.

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Farm Plan accepted

At PHD MAXIMUM CROP the customer comes first. PHD MAXIMUM CROP offers a complete line of nature friendly fertilizers and soil conditioners. These products have proven themselves time and time again in all types of soil conditions to increase yields and profits. Everyone needs to give our program a try. You'll be glad you did!
Along with our excellent fertilizer programs, PHD Maximum Crop offers a complete line of plant seeds.

We make no warranty of any kind, expressed or implied with respect to any products. Manufacturers and sellers obligation limited to replacement of product for defective material only. Neither seller nor manufacturer shall be liable for any injury, loss or damage directly or consequently arising from the misuse or inability to use the product.

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