Secondary Nutrients

Maximizing Growth With Comprehensive Nutritional Support

Secondary nutrients are often overlooked when it comes to fertilizer treatments. However, secondary nutrients, including sulfur, calcium, and magnesium, are critical to plant development. Secondary nutrient deficiencies prevent plants from utilizing primary nutrients to their fullest extent, which ultimately stunts growth. Secondary nutrient deficiencies can also cause problems in plants, such as misshapen or stunted fruit or tubers, yellowed leaves, or weak stalks, among other things. Our secondary nutrient fertilizers are designed to work alongside primary nutrient fertilizers and allow plants to utilize nutrients to maximum effect.


Liquid Sulfur Fertilizer

accesS™ is designed to supply essential sulfur to plant, as well as other vital macro- and micronutrients. This carefully calibrated combination of nutrients allows plants to absorb sulfur most effectively. This liquid sulfur fertilizer uses Nutriq Technology to deliver nitrogen, sulfur, iron, manganese, and zinc in a plant-usable form. This allows the plant to access a sustained supply of nutrients and prevents nutrients from being tied in the soil. With a variety of delivery options, accesS can be used wherever sulfur deficiencies have been shown, or it can be used in a comprehensive secondary nutrient program.

Product Benefits

  • Corrects or prevents sulfur deficiency, stunted growth, and reduced yields
  • Increases nitrogen utilization
  • Improves overall soil and plant health
  • Mixes well with other nutrients or crop protection products
  • Easy to apply at planting or throughout the growing season

Composition Guarantee Analysis

Nitrogen (N) 7.00%
7.00% Ammoniacal Nitrogen
Sulfur (S) 17.00%
17.00% Combined Sulfur
Iron (Fe) 0.25%
0.25% Water Soluble Iron (Fe)
Manganese (Mn) 0.05%
0.05% Water Soluble Manganese (Mn)
Zinc (Zn) 0.05%
0.05% Water Soluble Zinc (Zn)

accesS is a proprietary liquid sulfur fertilizer with high efficient and flexible delivery options. accesS is an environmentally responsible and economical option for boosting sulfur levels.


Liquid Calcium Fertilizer

Calcium deficiencies can present serious problems for many crops. Since calcium is needed for building cell walls, it’s an essential component to the growth of the plant. Plants low in calcium, particularly apples, cruciferous vegetables, carrots and tomatoes, can be noticeably damaged by calcium deficiencies. This is particularly problematic in areas of acidic, sandy or coarse soils, which do not contain or retain calcium as well as other soil types. LiberateCa™ secondary nutrient fertilizer can help to prevent calcium deficiency in all soil types, for all plants. LiberateCa can be effectively applied in many ways, so it is ideal for row crops, orchards, vineyards and other operations

Product Benefits

  • Corrects or prevents calcium deficiency, stunted growth, and reduced yields
  • Promotes strong plant cell growth
  • Improves resistance to stress, drought and disease
  • Balances soil salinity
  • Improves water penetration through soil
  • Easy to apply at planting or throughout the growing season
  • Mixes well with many other nutrients

Composition Guarantee Analysis

Calcium (Ca) 3.00%

LiberateCa™ is a liquid calcium fertilizer designed for easy application. This product is safe to use on many different types of crops and in many different soil conditions. To prevent calcium deficiency, use LiberateCa™ in-furrow at planting.


Magnesium Fertilizer

Magnesium is an often-overlooked secondary nutrient that nevertheless plays a key role in many essential plant processes. Magnesium is critical to the development of chlorophyll. It also plays an important role in the transfer and production of sugars, starches, fats and oils. This means a magnesium deficiency can cause vegetables, fruits, and seeds, which depend on starches, sugars and oils, to lose quality. Our magnesium fertilizer is designed to correct and, when used properly, prevent magnesium deficiencies in crops of all types.

Product Benefits

  • Corrects or prevents magnesium deficiency, stunted growth, and reduced yields
  • Promotes chlorophyll production
  • Promotes the production and transfer of sugars, starches, oils, and fats
  • Easy to apply at planting or throughout the growing season
  • Mixes well with many other nutrients

Composition Guarantee Analysis

Magnesium (Mg) 2.50%

Have us design a custom nutrition plan for you

All plants, from apple trees to grape vines to cabbage rows to corn crops, are restricted by nutrient deficiencies. If the plants do not have all of the nutrients they need, their growth and development will be restricted by the limited nutrient. This is what makes secondary nutrient fertilizers so important. If plants run out of usable sulfur, calcium, or magnesium in the soil, they will compensate through conservation at the deficient stage; slower growth, fewer blossoms, or smaller leaf, tuber, fruit, or seed growth. AgroLiquid’s secondary nutrient fertilizers are designed to provide these nutrients to the plant as soon as its detected. Proper soil testing before planting can help to prevent the problem beforehand, and tissue testing throughout the season can help you stop the problem if it occurs. To learn more about the use and application of secondary nutrients according to your crop and soil type, talk to our agronomists.

AgroLiquid Scientific Advancements

Not all nutrients present in the soil are usable to plants. Many complex chemical processes allow nutrients to cycle through the soil in different ways. Though this helps to keep nutrients from building up in the soil, it can also prevent plants from getting the nutrients they need. This is especially true for secondary nutrients, which are required in smaller amounts and can easily get out of balance. We developed Nutriq Technology to protect nutrients from soil tie-up and make them available to plants longer. This allows plants to use secondary nutrients longer, and also keeps these nutrients available throughout the plant’s growth stages.

Nutriq Technology

Our Nutriq Technology protects nutrients in a plant-based polymer shell. This prevents them from breaking down in the soil, but keeps them available to plants. This not only nurtures plants, but prevents nutrient toxicity in the soil and nutrient pollution in the environment.

Application strategies for secondary nutrient fertilizer

Apply with other nutrients or crop protection products

Apply with fertigation or drip irrigation

Apply as a planter placement to prevent nutrient deficiencies at planting

Apply as a topdress or sidedress to neutralize nutrient deficiencies fast

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!