Search Articles

  • Crops

  • State

  • Nutrient

  • Application

  • Year

Reset

At AgroLiquid, we study a variety of crops in detail to determine the best fertilizer combinations. All of our fertilizer research is carefully documented, including what fertilizers we use, when, on what crops, and how those crops grow. Much of our research is conducted at our 1,000 acre research facility, the North Central Research Station (NCRS). We also partner with farmers, growers, and ranchers across the country to conduct fertilizer research in other climates and soil types. This helps us perfect our fertilizer programs, and develop the most efficient combinations for all types of crops.

Fertility Programs for Reduced Irrigation and Population

As water well production slows and regulations increase in areas of heavy groundwater use,
growers are forced to cut back plant populations to match irrigation capacities.

Crops: Corn. States / Provinces: Colorado. Nutrients: Micronutrients, Nitrogen, Phosphorus, Phosphorus, Potassium, Potassium, and Sulfur. Years: 2024. Applications: Broadcast, Foliar, Irrigation, Planter, Side Dress, and Topdress.

In-Furrow Fertilizer Economic Challenge in Corn

In 2025 we did economic challenge plots with XtremeAg to see how three growers from different
parts of the country build a fertility program using a set application method and budget. In
Maryland we compared in-Furrow applications on corn with a $40/A fertility budget.

Crops: Corn. States / Provinces: Alabama, Maryland, and North Carolina. Nutrients: Calcium, Micronutrients, Phosphorus, Phosphorus, Potassium, Potassium, and Sulfur. Years: 2025. Applications: In-furrow.

Effect of Foliar Phosphorus Applications in Corn

The objective of this trial was to determine the effectiveness of foliar applied phosphorus on corn
yield.

Crops: Corn. States / Provinces: Maryland. Nutrients: Micronutrients, Nitrogen, Phosphorus, Phosphorus, Potassium, Potassium, and Sulfur. Years: 2025. Applications: Foliar.

Field Evaluation of Supplemental Nutrient Applications at Sidedress in Grain Corn

Sidedressing nitrogen in corn allows nutrients to be applied closer to the time when the crop needs them most, improving nitrogen use efficiency and supporting strong plant growth during key development stages.

Crops: Corn. States / Provinces: Ontario. Nutrients: Nitrogen, Phosphorus, Phosphorus, Potassium, and Potassium. Years: 2025. Applications: Side Dress and Y-Drop.

A Field Evaluation of Dry vs. Liquid Fertilizer Placement in Strip-Tilled Grain Corn Production

Strip tillage combines the soil conservation benefits of no-till with the seedbed advantages of conventional tillage. By tilling narrow planting strips while leaving the rest of the field undisturbed, strip tillage reduces erosion, improves soil structure, and retains moisture.

Crops: Corn. States / Provinces: Ontario. Nutrients: Micronutrients, Nitrogen, Phosphorus, Phosphorus, Potassium, and Potassium. Years: 2025. Applications: Strip-Till.

Field Evaluation of Supplemental Foliar Phosphorus Applications in Grain Corn

Phosphorus plays a critical role in early corn plant development, energy
transfer, and root growth. It is a key component of adenosine triphosphate
(ATP), which drives many metabolic processes required for plant growth.

Crops: Corn. States / Provinces: Ontario. Nutrients: Micronutrients, Nitrogen, Phosphorus, Phosphorus, Potassium, and Potassium. Years: 2025. Applications: Broadcast, Foliar, Irrigation, Planter, Side Dress, and Topdress.

Field Evaluation of Supplemental Foliar Phosphorus Applications in Grain Corn

Phosphorus plays a critical role in early corn plant development, energy
transfer, and root growth.

Crops: Corn. States / Provinces: Ontario. Nutrients: Micronutrients, Nitrogen, Phosphorus, Phosphorus, Potassium, and Potassium. Years: 2025. Applications: Foliar.

2×2 Fertilizer Economic Challenge in Corn

In 2025 we did economic challenge plots with XtremeAg to see how three growers from different
parts of the country build a fertility program using a set application method and budget.

Crops: Corn. States / Provinces: Arkansas, Iowa, and Tennessee. Nutrients: Calcium, Fulvic, Micronutrients, Nitrogen, and Sulfur. Years: 2025. Applications: Broadcast, Foliar, In-furrow, Planter, Side Dress, and Topdress.

Field Evaluation of Supplemental Nutrient Applications at Sidedress in Grain Corn

Sidedressing nitrogen in corn allows nutrients to be applied closer to the
time when the crop needs them most, improving nitrogen use efficiency
and supporting strong plant growth during key development stages.
Applying nitrogen during the growing season can reduce the risk of
nutrient losses from leaching or runoff.

Crops: Corn. States / Provinces: Ontario. Nutrients: Nitrogen, Phosphorus, and Potassium. Years: 2025. Applications: Side Dress.

Kapitalize on Corn

This trial is testing the yield impact of adding Kapitalize to two different fertility programs.

Crops: Corn. States / Provinces: Mississippi. Nutrients: Phosphorus, Phosphorus, Potassium, and Potassium. Years: 2025. Applications: Foliar.

ProGerminator in Corn

This trial was designed to measure how adding ProGerminator in a phosphorus rich environment could still be need to feed the plant.

Crops: Corn. States / Provinces: Mississippi. Nutrients: Phosphorus. Years: 2025.

Pro-Germinator Equivalency Proof of Concept

This is a proof of concept trial comparing a grower standard practice with an AgroLiquid program, and specifically look at the efficacy of 2 gal/A of Pro-Germinator versus 10 gal/A 18-13-0 + 4 ton/A turkey litter.

Crops: Corn. States / Provinces: North Carolina. Nutrients: Phosphorus. Years: 2025. Applications: Planter and Planting.

Nutrient Effects on Nitrogen Utilization

This trial tested the relationship between a nitrogen application in conjunction with Micro 1000 (10 micro and secondary nutrient package) and LiberateCa (calcium).

Crops: Corn. States / Provinces: Iowa. Nutrients: Calcium, Micronutrients, and Nitrogen. Years: 2024. Applications: Planter and Planting.

Late Season Foliar Applications on Corn

Phosphorus management is a hot topic in the industry, especially in areas that are at higher risk of movement to waterways. One management option is to delay a portion of the nutrient application later in season when there is demand. This trial evaluated foliar applications at pollination, brown silk, or both.

Crops: Corn. States / Provinces: Maryland. Years: 2024. Applications: Foliar.

Corn Yield Response to Potassium Application

This trial evaluated three corn hybrids to see their response the the addition of 5 gal/A Kapitalize applied at planting in a 2×2 band.

This trial was established in soils with good potassium levels but low calcium levels. Even with the higher potassium levels, past in-season tissue reports were low in potassium. Therefore, the recommendation for Kapitalize was made to provide additional potassium and calcium to see if there was a yield benefit.

Crops: Corn. States / Provinces: North Carolina. Nutrients: Calcium and Potassium. Years: 2024. Applications: Planter and Planting.

Corn Price : Fertilizer Budget Challenge

This trial was established to see yield impact on spending more when corn prices are high and what that return on fertilizer investment would be. Based on 250 bu/A corn yield goal we sent potential fall corn prices of $4, $6, and $8 per bushel. Using 20% of the potential crop income that gave a fertilizer budget of $200, $300 and $400 per acre.

Crops: Corn. States / Provinces: Alabama. Nutrients: Programs. Years: 2024.

Corn Fertilizer Economic Challenge

Crop and fertilizer prices vary from year to year, however in order to remain profitable on the farm you have to made adjustments to fit the current year’s budget. In this trial four grower-agronomists developed a fertility program based on the local Arkansas soil test. Each person build the fertility program and spend dollars as they found necessary with a goal to earn the highest return on fertilizer investment.

Crops: Corn. States / Provinces: Arkansas. Nutrients: Programs. Years: 2024.

Fertility Programs for Reduced Irrigation and Population

As water well production slows and regulations increase in areas of heavy groundwater use, growers are forced to cut back plant populations to match irrigation capacities. In this multi-year study, AgroLiquid aims to provide answers for growers on how fertility programs can be adjusted to match these population and irrigation reductions.

Crops: Corn. States / Provinces: Colorado. Nutrients: Programs. Years: 2024.

Individual Product In-Furrow Corn

The objective of this trial was to evaluate the efficacy of individual AgroLiquid products that are normally used as part of a blend for in-furrow applications in corn.

Crops: Corn. States / Provinces: Illinois. Nutrients: Calcium and Sulfur. Years: 2024. Applications: Planter and Planting.

Corn: Planter-Time Additives

The objective of this trial was to establish a value for planter-time product additives in Nebraska. Products such as Micro 500, LiberateCa, and individual microLink micronutrients added to in-furrow applications have been proven to increase yields.

Crops: Corn. States / Provinces: Nebraska. Nutrients: Programs. Years: 2024. Applications: Planter and Planting.

V5 Corn Foliar Programs

The objective of this trial was to establish the value of foliar programs on early season corn. For many growers, V5 can be a convenient timing for adding foliar nutrition to a postemergence application of herbicide.

Crops: Corn. States / Provinces: Nebraska. Nutrients: Programs. Years: 2024. Applications: Foliar.

In-Furrow Fertilizer Components in Corn

The objective of this trial was to evaluate the benefit of adding sulfur (eNhance) or fulvic acid and biologicals (C-Tech) to in-furrow application of Pro-Germinator.

Crops: Corn. States / Provinces: Maryland. Nutrients: Programs. Years: 2024. Applications: Planter and Planting.

Foliar Fertilizers in Corn

Nitrogen, phosphorus, potassium, iron, and sulfur are nutrients that can potentially improve corn yield when applied as a foliar treatment. The objective of this trial was to evaluate the effect of FertiRain, Iron, PrimAgro P and various combinations on corn yield when applied as a foliar treatment.

Crops: Corn. States / Provinces: Maryland. Nutrients: Programs. Years: 2024. Applications: Foliar.

Fertilizer Programs for Corn Silage

The objective of this trial was to evaluate a corn silage nutrition program developed based on soil test reports and grower yield goals, compared to a grower standard program. The grower standard program included phosphorus, nitrogen, and a foliar biological product. Forage samples were analyzed for quality components. Milk production was estimated using the Wisconsin Milk 2024 computer model.

Crops: Corn and Silage Corn. States / Provinces: New York. Nutrients: Programs. Years: 2024. Applications: Planter, Planting, and Side Dress.

Effect of C-Tech on Corn Silage

Corn silage production requires high yield and good forage quality to provide high value nutrition to dairy cows. The objective of this trial was to evaluate the effect of using C-Tech, a fulvic acid + biological product applied in-furrow, compared to a grower standard program. The grower standard program included phosphorus and nitrogen.

Crops: Corn and Silage Corn. Nutrients: Biologicals. Years: 2024. Applications: Planter and Planting.

Nitrogen Product and Enhancement Comparison

High NRG-N compared to 28% UAN and additional AccesS sidedressed on corn.

Crops: Corn. States / Provinces: Michigan. Nutrients: Nitrogen and Sulfur. Years: 2024. Applications: Side Dress and Y-Drop.

Foliar Nitrogen Application Comparison In Corn

Crops: Corn. States / Provinces: Michigan. Nutrients: Nitrogen. Years: 2008. Applications: Foliar.

High Management Irrigated Corn_PTI Farm

Evaluation of the yield and economic impact of a corn liquid starter fertilizer and foliar nutritional program from AgroLiquid in a high management irrigated environment.

Crops: Corn. States / Provinces: Illinois. Nutrients: Programs. Years: 2023. Applications: Foliar, Planter, and Side Dress.

High Management Dryland Corn_PTI Farm

Evaluation of the yield and economic impact of a corn liquid starter fertilizer and foliar nutritional program from AgroLiquid in a high management dryland environment.

Crops: Corn. States / Provinces: Illinois. Nutrients: Programs. Years: 2023. Applications: Foliar, Planter, and Side Dress.

Tissue PPM Zinc Following Foliar Application on Corn

The objective of this trial was to determine the change in zinc tissue levels in corn after foliar application of microLink Zn.

This multi-site trial was established at nine locations.

Crops: Corn. States / Provinces: Illinois, Kentucky, Michigan, Minnesota, and Tennessee. Nutrients: Micronutrients. Years: 2023. Applications: Foliar.

Corn Fertilizer Program Comparisons – XtremeAg Tennessee

In this grower field trial an AgroLiquid program was developed to compare to the grower standard fertility program.

Crops: Corn. States / Provinces: Tennessee. Nutrients: Calcium, Micronutrients, Multinutrient, Phosphorus, and Programs. Years: 2023. Applications: Foliar, Planter, and Planting.

Corn Fertilizer Program Comparisons – XtremeAg Illinois

This grower corn trial compared a grower standard fertility program to different combinations of AgroLiquid products. Utilizing a soil test and the grower standard practice, key AgroLiquid products were placed into the program.

Crops: Corn. States / Provinces: Illinois. Nutrients: Calcium, Micronutrients, Phosphorus, Potassium, and Programs. Years: 2023. Applications: Planter, Planting, and Y-Drop.

Corn Fertilizer Program Comparison – Georgia

This corn trial was established looking at two different comparisons:

First, a comparison of planter fertilizer program was made comparing 3 gal/A Pro-Germinator to 2

gal/A Pro-Germinator + 1 gal/A Spring-uP.

Second, a comparison between UAN and UAN with an experimental product, eN-22.

Crops: Corn. States / Provinces: Georgia. Nutrients: Programs. Years: 2023. Applications: Planter and Planting.

Corn Program Comparison – XtremeAg Maryland

This corn trial was established utilizing key AgroLiquid products placed into the grower standard practice. Each treatment builds off the previous.

Crops: Corn. States / Provinces: Maryland. Nutrients: Programs. Years: 2023. Applications: Foliar, Planter, Planting, and Side Dress.

Corn Fertilizer Program Comparisons – XtremeAg

This trial evaluated an AgroLiquid fertility program against the grower standard, along with an AgroLiquid program with additional potassium and calcium to address the growers concerns of low tissue levels in season.

Crops: Corn. States / Provinces: North Carolina. Nutrients: Programs. Years: 2023. Applications: Planter and Planting.

Corn Fertilizer Program Comparison vs Grower Standard – Xtreme Ag

This trial with XtremeAg grower Henderson Farms evaluated where AgroLiquid best fits into the grower standard fertility program.

Crops: Corn. States / Provinces: Alabama. Nutrients: Programs. Years: 2023.

Foliar Potassium on Corn – XtremeAg

This trial was established to compare AgroLiquid’s foliar potassium products Sure-K and Kapitalize to the grower standard application of potassium acetate.

Additionally, costs analysis was completed looking at yield revenue minus the cost of product.

Crops: Corn. States / Provinces: Iowa. Nutrients: Potassium. Years: 2023. Applications: Foliar.

Micro 500 Added to Grower Standard Program

The objective of this trial was to evaluate the addition of Micro 500 to the grower’s standard corn program.

Crops: Corn. States / Provinces: Minnesota. Nutrients: Micronutrients. Years: 2023. Applications: Planter and Planting.

Y-Drop Applied LiberateCa on Corn

LiberateCa is often thought of as an addition to an in-furrow liquid fertilizer blend in soybeans or corn. The objective here was to evaluate the benefits of LiberateCa applied to corn later in the season at the beginning of the reproductive stage.

Crops: Corn. States / Provinces: Minnesota. Nutrients: Calcium. Years: 2023. Applications: Y-Drop.

Side Dress Fertilizer Options in Corn

The objective of this trial was to evaluate the effect of various side dress fertilizer additions to nitrogen. Previous research has shown positive yield results from adding micronutrients, potassium, phosphorus or sulfur to nitrogen at side dress in corn.

Crops: Corn. States / Provinces: Maryland. Nutrients: Micronutrients, Phosphorus, Potassium, Programs, and Sulfur. Years: 2023. Applications: Side Dress.

In-Furrow Corn Trial

This grower is looking for an effective but low cost in-furrow blend that meets his goal of providing a positive ROI versus no in-furrow fertilizer applied.

Crops: Corn. States / Provinces: Minnesota. Nutrients: Programs. Years: 2023. Applications: Planter and Planting.

Micro 500 Evaluation

Micro 500 experiments may be few.  This is an excellent test to show the value of micro nutrients on corn.

Crops: Corn. States / Provinces: Michigan. Nutrients: Micronutrients. Years: 2023. Applications: Planter and Planting.

3 Year In-Furrow Phosphorus Comparisons

AgroLiquid Pro-Germinator and springuP compared to conventional phosphorus sources.

Crops: Corn. States / Provinces: Michigan. Nutrients: Phosphorus. Years: 2021, 2022, and 2023. Applications: Planter.

In-Furrow Yield Study

The objective of this replicated Product Field Experience research trial in northern Illinois was to gauge the effectiveness of a retail partner recommended in-furrow treatment against the grower’s historic practice of no in-furrow starter in corn on a high fertility field on a dairy farm.

Crops: Corn. States / Provinces: Illinois. Nutrients: Programs. Years: 2023. Applications: Planter.

Corn Planter-Time Rate Comparison

The objective of this trial was to establish ProGerminator’s efficacy in-furrow versus 10-34-0 in neutral to low pH soils.

Crops: Corn. States / Provinces: Nebraska. Nutrients: Phosphorus. Years: 2023. Applications: Planter.

Planter-Time Additions on Corn

This trial was intended to help determine the efficacy of LiberateCa, AgroLiquid Fulvic, and CTech as planter-time additions to ProGerminator and Micro 500 blends.

Crops: Corn. States / Provinces: Nebraska. Nutrients: Biologicals, Calcium, Carbon, Fulvic, Micronutrients, and Phosphorus. Years: 2023. Applications: Planter and Planting.

Corn Planter-Time Rate Study

The objective of this trial was to establish ProGerminator’s efficacy in-furrow versus 10-34-0 in neutral to low pH soils.

Crops: Corn. States / Provinces: Nebraska. Nutrients: Phosphorus. Years: 2023. Applications: Planter.

UAN Nitrogen Efficiency Additives

The objective of this trial is to determine the efficacy of AgroLiquid product eNhance and a new experimental eN-22 as an additive to UAN.

Crops: Corn. States / Provinces: Nebraska. Nutrients: Nitrogen and Sulfur. Years: 2023. Applications: Planter.

XtremeAg Trials 2022

XtremeAg is very transparent with what they do on their farms, and will highlight products and practices that work, along with those that don’t. AgroLiquid has used this opportunity to test out-of-the-box ideas, push for high yields, and expand testing on crops we have little data on.

This report contains all of the results for 2022 for each of the locations where testing was done.

Crops: Corn, Cotton, Rice, and Soybeans. States / Provinces: Alabama, Arkansas, and North Carolina. Nutrients: Programs. Years: 2022. Applications: Foliar, Irrigation, Planter, and Planting.

XtremeAg Trials Report 2021

XtremeAg is very transparent with what they do on their farms and will highlight products and practices that work, along with those that don’t. AgroLiquid has used this opportunity to test out-of-the-box ideas, push for high yields, and expand testing on crops we have little data on.

This report includes the results for 2021 for each of the locations where testing was done.

Crops: Corn, Cotton, and Soybeans. States / Provinces: Alabama, Arkansas, and Iowa. Nutrients: Programs. Years: 2021. Applications: Foliar, Irrigation, Planter, and Planting.