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Growers trust St. Clair Service Company to deliver top-performing crop protection products that promise the best performance before, during and after the growing season. When it comes to weed and pest management systems, St. Clair Service Company can offer you the full line of herbicides, pesticides and insecticides to keep your crops healthy for harvest. Our Crop Specialists offer crop protection solutions and expert recommendations tailored to each grower's fields, utilizing cutting edge products from our suppliers like BASF, Bayer, Corteva, and Syngenta to name a few. Whether you are fighting pre-emergent weeds or managing pests, St. Clair Service Company has all the products you need to help your crops reach their full potential. 


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Custom Application 

In today’s world, applying crop protection products can be daunting with label changes, regulations, equipment maintenance and drift management. FS offers Custom Application to help reduce our customer’s risk and ensure proper guidelines are being followed. As the risk managers of today’s application world, FS Applicators are constantly in training to stay ahead of the latest label changes, regulations and best practices. FS is raising the industry standard, again, with first-of-its-kind applicator training simulator to ensure our FS Custom Applicators have the highest level of accuracy and on-target application. Why take the risk in today’s complex world of crop protection application? Let FS apply the products needed to protect your crop and investment. 

Contact your FS Crop Specialist

Your FS Crop Specialist is here to help you with your nutrient management plans. 

Agronomy/Crop Manager:

David Schmitz Cell: (618) 980-0180 _ Email: [email protected]

Crop Specialists:

Brennan Mcvey Cell: (618) 979-6593 _ Email:  [email protected]

Duncan Ross Cell: (573) 837-2786 _ Email: [email protected]



Find out more

FS Adjuvant Catalog

FS Adjuvant Catalog

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FS Crop Protection Plant Performance Guide

Learn more about our crop protection and supplemental nutrients.

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Fall Burndown Guide

Find all your fall burndown products here. 

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Crop Protection News

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February 20, 2018
Corn growers are constantly in search of higher yields. They look for an edge – an input – that Corn will help them maximize yield each year.
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August 02, 2017
The purpose of starter fertilizer is pretty straight forward – to send the crop off with a fast start. InVigoron is a line of superior-grade liquid starters that place nutrients directly with the seed, at planting, to maximize yield potential.
Read More in the News Archive

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We have revised our Privacy Policy and Terms of Use.

Please read both of these documents as the changes affect your legal rights. By continuing you agree to these updates.