A variety of soil amendments and nutrients to fit the needs of your field.

Soil Amendments

Holloway Ag carries a variety of soil amendments and nutrients to fit the needs of your field. In addition to our quality, ready-made products, we also provide custom blending and will give recommendations based on your unique soil report. Holloway’s agronomists will provide custom soil amendment recommendations whether you need to amend clay soil using gypsum, or amend acidic soil using lime. And our agronomists are at liberty to recommend products Holloway does not offer. Our goal is to amend your field however necessary to turn dirt back into soil.

Many of our soil amendments and nutrients are certified organic and we take pride in mining and sourcing many of our products directly. Holloway’s gypsum mine is in the heart of Lost Hills and our fleet of trucks at Holloway Logistics delivers right to your field. Knowing where your soil amendments come from matters because we ensure their quality and take pride in the custom blending and variations of our products so that your field gets exactly what it needs to thrive.

Whether your soil is in need of improved water retention, additional nutrients, or an adjustment to its pH level, the Holloway Ag team is here to assist. Explore our suite of soil amendments and nutrients and then get in touch with our team so we can help you with what you need to improve your yields.

Gypsum 70_75


Crushed Sulfur


Gypsum 90_95



Humic Acid

Green Waste Compost



Watch how one customer saw impressive yields after partnering with Holloway

Tom Sandrini, an alfalfa farmer in the Kern Delta area, discusses his experiences with healthier crops and higher yields after partnering with Holloway Ag.

After seven years of using liquid fertilizer, he switched to Holloway Ag’s solid soil amendments and has seen incredible yield over years past. He says that he has never seen his fields so green and lush with growth and that it has kept the weeds completely at bay. The alfalfa develops a regrowth and a canopy so quickly after each cutting that the weeds don’t get any light to grow!

He was also very pleased with Holloway’s effective and efficient spreading process of the soil amendments and compost.

Because of the results, Sandrini says he will get his fields soil tested every year and follow whatever recommendations Holloway sees fit.

Watch how one stone fruit grower improved his soil quality after partnering with Holloway

The agronomy team at Holloway Ag took soil samples at each of Ryan Metzler’s stone fruit orchards to determine deficiencies in the soil and create a custom blend soil amendment prescription to improve the soil, and therefore the tree health.

“I’d highly recommend Holloway and their agronomy team and their sales team if you’re trying to get your soils in a better place.” Metzler said.

Better tree health equals more fruit and better fruit. The Holloway Ag team took an individualized approach to the soil in each orchard to yield the best results for the grower.

Let Holloway Ag be your partner in healthier soil for greater yields.