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"Since its inception in 1967, Marion Ag Service, Inc. has aimed to provide exceptional customer service and high-quality solutions to growers throughout the Willamette Valley. Over the years, we have expanded our roots far beyond our home in St. Paul, Oregon and adapted our products to satisfy the needs of our ever-expanding customer base.


Our core belief in finding win-win solutions for our customers allows us to grow together. This belief enables us to grow our people, relationships, business resources by adding value to the crops and landscapes help grow.


Today Marion Ag has three core focus areas; Technical Services, Soil Health, and Nutrient Delivery. Each focus area houses a suite of individual services that deliver value to our grower and re-seller customers.


Whether you are a grower looking for unbiased professional service, a re-seller in need of an effective supply chain partner or a manufacturer needing to evaluate your product. Marion Ag has the people and expertise to make your business better."

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2100 Liquid Nursery Mix is a solution blend formulated by the agronomist at Marion Ag to compliment our Premix 2000. This nursery mix is comprised of UAN 32, Trisert N, 10-34, KTS, Iron Chelate, and Liquid Humic Acid with 3.22% of the total nitrogen being slow-release from TRIAZONE.

Marion Ag Services 2100 Liquid Nursery Mix

Pro-Pell-It! Bone Meal 6-12-0 is similar to our Bone Meal 3-15-0 but with a more balanced nitrogen to phosphorus ratio.

Marion Ag Services Bone Meal 6-12-0

Pro-Pell-It! Pelletized Gypsum is granulated, water-soluble grade gypsum commonly used to manage soil pH and sulfur /calcium into the soil. This easy-to-handle product can be applied using a rotary type broadcast spreader. Each granule is designed to disperse or break apart shortly after coming in contact with water. Available in mini and standard sizes.

Marion Ag Services Pelletized Gypsum

Pro-Pell-It! Mag Kick is granulated mineral containing four crucial plant nutrients: magnesium, iron, calcium, and manganese. Originally created for the turf market, growers around the PNW began experimenting with Mag-Kick in both nurseries and in field crops. It’s now included in several of our house blends including Premix 2000.

Marion Ag Services Mag Kick

One of our original turf blends, Fall Plus is formulated using two different of slow release nitrogen to help provide a steady release regardless of temperature or heavy rains. The heavy dose of potassium is important to apply prior to entering cooler months to protect the roots from frost and strengthen the plants’ cell walls 

Marion Ag Services Fall Plus 15-10-26

An extended release nitrogen blend formulated Nitroform and fortified with micronutrients. This product was formulated for use on Christmas tree farms across the Pacific Northwest.

Marion Ag Services 13-7-9 Christmas Tree

Pro-Pell-It! Alfalfa Meal 2.5-0-2.5 is an excellent, all-purpose fertilizer when supplemented with a source of phosphorus. Alfalfa Meal has the ability to increase water retention, improve soil structure, and stimulate biological activity. Pro-Pell-It! Alfalfa Meal is a non-GMO product.

Marion Ag Services Alfalfa Meal 2.5-0-2.5

Pro-Pell-It! Fish Meal 9-4.5-0 is a versatile fertilizer used by many growers in the early-middle stages of plant growth due to its high nitrogen content complemented with a reasonable amount of phosphorus. Fish Meal is ideal for incorporation at the time of planting or for topdressing throughout the season. It can be used as a nitrogen “kicker” for a feather based nutrition program or for plants that are showing nitrogen deficiency.

Marion Ag Services Fish Meal 9-4.5-0

Pro-Pell-It! Kelp Meal is made from a special species of giant kelp found along the Pacific coasts, Macrocystis pyrifera. What makes this species unique is that it is known to contain higher concentrations of nitrogen potassium than other kelps available on the market. Pro-Pell-It! Kelp Meal is harvested from the Pacific Ocean and sun-dried until it is ready for processing. It should be used to complement an NPK program.

Marion Ag Services Kelp Meal 2-0-4

Marion Ag Services

"Since its inception in 1967, Marion Ag Service, Inc. has aimed to provide exceptional customer service and high-quality solutions to growers throughout the Willamette Valley. Over the years, we have 

Marion Ag Services - Agrochem - Soil Health - Knowde

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Marion Ag Services Humic Acid 50 is a dry formulation of water-soluble humic acid that won’t break the bank. Humic Acid 50 can be used to increase soil organic matter and stimulate microbial activity.

St Paul Brand Granular Fertilizer - All AnalysesSafety Data Sheet

St Paul Brand Granular Fertilizer - All AnalysesSafety Data Sheet - Marion Ag Services

Marion Ag Services Humic Acid 50

A dry formulation of water-soluble humic acid that won’t break the bank. Humic Acid 50 can be used to increase soil organic matter and stimulate microbial activity. 

Marion Ag Services Humic Acid 50 - Fertilizers - Knowde

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Marion Ag Services Humic Acid 50

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