Fertilizer Research

What is Harvest to Harvest™?

Fertilizer Research

At CSS, we focus on producing the highest quality liquid fertilizer solutions and blends to make your farming operation more productive and sustainable. All of our products are formulated with our flagship product, Harvest-to-Harvest™, as the base product of every formulation.

CSS Lab Products

Harvest-to-Harvest™ provides active organic matter that will help stimulate microbial activity and promote soil fertility. This active organic matter also contributes to more efficient nutrient uptake and provides greater water holding capacity in the soil with repeated applications.

Harvest-to-Harvest™ is blended with a variety of conventional inputs to provide liquid solutions that provide plant and soil nutrition that allow you to reduce or eliminate conventional inputs and reduce application rates and costs. Please see our Products page for more information.

What is Harvest-to-Harvest?

Harvest-to-Harvest™ is a liquid fertilizer and soil amendment that is made from recycled food from supermarkets. It is made by mechanically grinding, heating, and enzymatically digesting the food. The resulting liquid is then pasteurized, screened, stabilized, and homogenized to a average particle size of 26 microns (74 micron max particle size). Harvest-to-Harvest™ is a great way to add organic matter to your soil and stimulate soil fertility. Harvest-to-Harvest™ is registered pathogen free and safe to use on all crops. It is blended to make each application consistent, and to produce scientifically repeatable results.

How is Harvest-to-Harvest applied?

Harvest-to-Harvest™ is a soil applied liquid fertilizer that can be applied through any type of irrigation equipment, including: pivot systems, solid-set sprinklers, drip line, and low pressure drip tape. CSS recommends a minimum dilution rate of 4:1 with water when applying through high-pressure sprinkler systems. For drip line and drip tape, Harvest-to-Harvest™ should be water run and applied at .5 – 3% final line dilution directly into the main manifold. For smaller drip systems that are 300GPM and less, we recommend that Harvest-to-Harvest™ be diluted 4:1 minimum prior to injection. Please consult your CSS sales or technical sales rep to get more information on application and dilution rates.

How does Harvest-to-Harvest increase crop yield and quality?

Harvest-to-Harvest adds organic matter directly to the root zone of plants. It can be applied by any existing irrigation technology from micro-sprinklers to low-pressure drip tape. This helps retain nutrients in the root zone and utilize water more efficiently.

Harvest-to-Harvest contains a variety of nutrients that stimulate the soil fertility cycle including: amino acids, organic acids, and sugars. Harvest-to-Harvest is readily consumed by soil organisms which in turn stimulates a root growth response by the plant. Greater root growth and nutrient uptake promotes plant flowering and fruiting, increasing crop yield and quality

Improve your Soil and your Yields with Harvest-to-Harvest

Independent Research has shown that Harvest-to-Harvest can improve soil quality and increase yields on several crop types. Studies by independent experts on several specialty crops have shown that it is possible to apply Harvest-to-Harvest, reduce soluble nitrogen applications, and still increase crop yields. Contact us today to inquire about what Harvest-to-Harvest can do for your crops, and to obtain research data from any of our independent trials.


RC = Replaces Compost, RN = Reduces Nitrates, YI = Yield Increases

Significantly measurable increase in soil organic matter. Accelerated growth identified in young tree transplants.
Leafy Greens
Marketable color and quality preserved. Ongoing tests underway to reinforce realized test results.
Processing Tomatoes
Increase canopy growth. Improved flowering and fruiting.
Berry color and brix preserved along with yield increases.
Wine Grapes
Improved pH and acidity balance. Increased anthocyanins for color and bouquet.

Contact us for more information about Commercial Agriculture

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K-Plex Organic 0-0-8 is a pH-neutral, organic, agricultural potassium solution derived from sunflower ash that contains both potassium carbonate and potassium acetate. As it’s made completely from natural plant material - it’s both organic and environmentally-friendly. It’s well known that the availability and timing of potassium application is a critical element for plant growth - especially if you want to maximize your yield and improve fruit quality.

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