Micro 400

Micronutrient Fertilizer to Correct Deficiencies

Micro 400 is a micronutrient fertilizer designed to correct micronutrient deficiencies in soil and stimulate plant growth. Micro 400 contains copper, iron, manganese and zinc. It is easy to apply and safe to use with other nutrient programs. Micro 400, unlike its sister fertilizer product Micro 500, does not contain boron, so it is ideal for plants that are sensitive to this nutrient.

These micronutrients are essential to plant processes, but they are often overlooked. This often results in deficiencies, which can damage plant leaves, stalks, and root systems, and minimize growth.

Plants requires zinc, manganese, iron, and copper to produce chlorophyll. When soil is deficient in these nutrients, it stunts chlorophyll production and prevents plants from reaching maximum growth potential. This in turn reduces fruit, seed, and tuber growth, which ultimately reduces yield. Micro 400 corrects deficiencies through the measured release of these essential micronutrients.

Micro 400 uses Flavonol Polymer Technology for controlled release. This technology improves plant utilization and reduces the concentration of micronutrients required. This means you can correct copper, iron, manganese or zinc deficiencies without affecting the soil’s nutrient balance.

You do not have to make a special trip to apply Micro 400. This micronutrient fertilizer can be applied with other liquid macronutrients or crop protection products. In this way, you can correct deficiencies and feed your plants without adding time or work.

Product Benefits

  • Corrects deficiencies stunting crop growth
  • Supports chlorophyll production and improves leaf growth
  • Improves micro- and macronutrient utilization
  • Can improve yield and crop quality
  • Improves micronutrient profile in soil for greater longevity
  • Easy to apply

Composition Guarantee Analysis

Copper (Cu) 0.25%
0.25% Water Soluble Copper (Cu)
Iron (Fe) 0.37%
0.37% Water Soluble Iron (Fe)
Manganese (Mn) 1.20%
1.20% Water Manganese (Mn)
Zinc (Zn) 1.80%
0.07% Water Soluble Zinc (Zn)

Technical Data

Micro 400™ is derived from copper sulfate, ferrous sulfate, manganese sulfate, and zinc sulfate. Note that this product does not contain boron, making it safe to use on crops that are sensitive to boron. To choose the best application method and amount to correct deficiencies or stimulate growth, contact an AgroLiquid agronomist.

Have us design a custom nutrition plan for you

An AgroLiquid nutrition plan is dependent on your location, climate, soil conditions, and goals with your crop. All of our tailored programs start with reviewing your soil samples with one of our expert agronomists. After our analysis, our team will provide you with a couple options that will help you meet your goals on a budget that won’t break the bank.

AgroLiquid Scientific Advancements

Just like people, plants also require micronutrients to grow properly. Micronutrients are essential to photosynthesis, which supports every structure in the plant. We’ve carefully studied micronutrient use of various crops, and developed optimal micronutrient fertilizer programs for each one. Our fertilizers can be used to fix deficiencies that are damaging leaf, stalk, root, and bud growth, or they can be used proactively to stimulate production.

Flavonol Polymer Technology

This bonds with your nutrients and creates a protective layer that makes up to 80% more of your nutrients available to plants. It sounds like magic, but it’s just science.

Application strategies for Micro 400™

Planter placement

Foliar application



Have a specific crop problem you’re trying to solve?

AgroLiquid was founded because there wasn’t a nutritional product that was solving our fertilizer needs; after 35 years of development and research, our chemists, biologists, and agronomists continue to innovate and create the best products on the market. If you have a specific crop problem, ask one of our agronomists and we’ll help you solve it!

Micro 400™ micronutrient fertilizer is used regularly with


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Kalibrate provides more potassium concentration and is specifically formulated to resist freezing making it well suited for fall and early season delivery in northern climates.

Pro Germinator

Pro-Germinator® provides well-balanced crop nutrition and supports early growth at planting. It provides a range of nutrients without damage to plants.

Ready to give AgroLiquid a try?

Our suppliers are experienced crop advisors located throughout the U.S. and Canada.
Each crop advisor knows the soil, climate, market, and most popular crops of the area.