AgroLiquid on Rural America LIVE

AgroLiquid’s goal is to prosper the farmer while safeguarding the environment. Learn how they are different from any other fertilizer company in the industry today as experts discuss details about their line of high-performance fertilizers formulated with scientifically based recommendations to help growers achieve the best possible production yields while employing sustainable agricultural practices.

Fertilizer Program Sustainability in Corn 2011-2015

Senior Research Manager, Dr. Jerry Wilhm discusses how and why the lower applied rates of AgroLiquid nutrients are sustainable and more efficient in feeding the plant the nutrients it needs to thrive. In this short video, Dr. Wilhm further demonstrates this through a four-year sustainability study from the North Central Research Station (NCRS).

Download a pdf version of Fertilizer Sustainability in Corn

Research Field Days 2015

Fertilizer Program Comparisons in Dryland Corn Security Seed & Chemical Research Farm.

Experiment Info 13-308

Planted: 5/20
Row Spacing: 30”
Previous Crop: Soybeans
Plot Size: 6 rows x 400’
Replications: 2

Soil Test Values (ppm)

pH: 7.1
CEC: 8.8
% OM: 2.3
Bicarb: 15
K: 171
S: 15
% K: 5.0
% Mg: 8.9
% Ca: 84.9
% H: 0
% Na: 1.2
Zn: 2.7
Mn: 10
B: 0.4


Evaluate several different fertilizer sources and additives for effect on corn yield. Application of essential nutrients is all part of obtaining optimum corn yield. Occasionally the weather is cooperative for exceptional yield, and this is when a well-balanced nutrient program is especially effective. An experiment was established in Western Kentucky to compare base programs of an area conventional program with that of an AgroLiquid program. Additionally,
several nutrient additives were included to evaluate effects on yield. The conventional program was a broadcast application of dry 6-24-24, 10-34-0 in furrow and then 32% UAN sidedress. The soil test indicated high soil K levels, so the base AgroLiquid program was Pro-Germinator + Micro 500 in furrow and 32% UAN sidedress. Additives to the AgroLiquid program were: eNhance with sidedress 32% UAN, eNhance in furrow for sulfur, accesS with the sidedress for sulfur, and Sure-K applied in-furrow with the Pro-Germinator + Micro 500 to see if there is a yield increase in a high soil test K soil. The growing season was exceptionally good for high yield, with timely rainfall and favorable temperatures. Treatment yields appear in the chart.


• All full treatment programs yielded significantly higher than the nitrogen only treatment.

• The AgroLiquid program with 32%/eNhance yielded significantly higher than the conventional treatment of 6-24-24, 10-34-0 and 32% UAN.

• Addition of eNhance to the in-furrow treatment resulted in a yield increase, and was evidently more effective than the accesS addition to the sidedress treatment.

• Addition of Sure-K to the in-furrow treatment with Pro-Germinator + Micro 500 + eNhance did increase yield, but only slightly in this high soil test K soil.

Planter Fertilizer Methods of Application in Corn (13-1004)

Experiment Info13-1004

Planted: 5/9
Variety: P0216HR
Population: 32,500
Row Spacing: 30”
Previous Crop: Soybeans
Plot Size: 15’ x 800’
Replications: 3
Sidedress: 6/15
Harvested: 10/23

Soil Test Values (ppm)

pH: 6.8
CEC: 9.7
% OM: 1.9
Bray P1: 8
K: 77
S: 10
% K: 31
% Mg: 22.3
% Ca: 74.7
%H: 0
% Na: 1.0
Zn: 0.8
Mn: 5
B: 0.5


To compare planter fertilizer methods of application on yields in corn. Typical methods of planter fertilizer applications have always involved placing nutrients into the soil profile. One application method referred to as 0x1 involves placing the nutrients in a narrow band on the soil surface and one inch to the side of the seed placement. This setup is very easy to install on a planter. It involves a stainless tube mounted behind the press wheels and your typical pump supply system. Some previous testing of 0x0 has been conducted at the NCRS in the past. This experiment is comparing the 0x1 placement to an in-furrow placement using the same nutrients and rates.


• Very dry late season conditions resulted in lower than expected yields.

• The small 1 bu/A yield advantage of the in-furrow treatment over the 0x1 shows how close these placement methods are.

• The 0x1 treatment shows positive results as a viable option for nutrient placement. Continued testing will occur at the NCRS.

Calcium Additives for Corn (13-802)

Experiment Info13-802

Planted: 5/9
Variety: P0216HR
Population: 31,500
Row Spacing: 30”
Previous Crop: Corn
Plot Size: 15’ x 530’
Replications: 4
Sidedress: 6/15
Harvested: 10/22

Soil Test Values (ppm)

pH: 6.1
CEC: 10.8
% OM: 2.4
Bray P1: 24
K: 128
S: 10
% K: 3.0
% Mg: 18.5
% Ca: 63.7
%H: 14.4
% Na: 0.4
Zn: 0.9
Mn: 9
B: 0.4


To observe the role that additional calcium provides when applied with a planter program in corn. Calcium is an important nutrient to help facilitate the transport of other necessary nutrients for plant growth. If calcium in the soil is not in an available form, then additional available calcium applied in a narrow band with the planter can help to increase the effectiveness of other applied nutrients. To demonstrate this, an in-furrow application of 2.5 gal/A of Pro-Germinator + 2 qt/A of Micro 500 was made as a base comparison. A second treatment added 2 gal/A of LiberateCa to the base treatment. The last treatment added S-Calate to the 2×2 placement to avoid the higher sulfur content, in S-Calate, from being applied in-furrow.


• The addition of LiberateCa provided the highest significant yield advantage over the base treatment of 2.5 gpa of Pro-Germinator and 2 qt/A of Micro 500.

• All treatments were significantly higher than the no planter fertilizer.

• The addition of either S-Calate or LiberateCa to the planter program provided a convenient source of calcium and both showed a yield response with their use.

Nitrogen Source Comparison in Corn (13-715)

Experiment Info13-715c

Planted: 5/7
Variety: DKC53-78
Population: 4
Row Spacing: 30”
Previous Crop: Soybeans
Plot Size: 15’ x 210’
Replications: 4
Potash: Fall 2012
PPI: 5/2, 5/6
Sidedress: 6/8
Harvested: 10/15

Soil Test Values(ppm):

pH: 7.0
CEC: 12.4
% OM: 3.4
Bicarb P: 17
K: 111
S: 5
% K: 2.3
% Mg: 21.4
% Ca: 75.9
%H: 0
% Na: 0.4
Zn: 1.5
Mn: 4
B: 0.7


Compare different nitrogen source inputs for corn. This experiment is intended to follow similar fertilizer programs over time in a corn/soybean rotation. Nitrogen recommendation of 180 lb/A was set to reach a yield goal of 175 bu/A. This is a very productive soil, where yields the past two seasons have exceeded expectations and 2013 was no different. Within this experiment were three different AgroLiquid nitrogen treatments that are actually applying much less than the 180 lb that is the standard for this test. The treatments were: 41 gal/A of High NRG-N (126 lb-N/A), 47 gal/A of 28% with eNhance (141 lb of N/A) and 47 gal/A of 28% with 4 gal/A access (141 lb N/A). All treatments received the same planter fertilizer program to allow for comparison of N treatment effects. The yields appear in the following chart.


• Highest yield came from 28% + eNhance, which provided a yield of 213.6 bu/A. 28% + accesS provided the same amount of nitrogen per acre, however does not provide the same efficiency of nitrogen as 28% + eNhance, therefore was not able to provide the same yield response.

• Because the yield goal of 175 bu/A was exceeded, the lower actual rates of N in High NRG-N did not allow for above and beyond yield compared to the other N sources. However, excellent yield of 198.3 bu/A was reached.

(Webinar) Getting More For Less From The Fertilizer You Apply

No-tillers can’t afford to waste money on applied fertilizer. Neither can the agriculture industry continue to watch these resources negatively impact watersheds without expecting possible severe regulations. Nobody knows that any better than no-tiller Mike Starkey of Brownsburg, Ind., whose farm lies right at the base of the Eagle Creek Watershed that supplies the city of Indianapolis its drinking water.

This 1 hour webinar produced by No-Till Farmer Magazine originally broadcast November 27th, 2013.

Use Liquid Fertilizer for Long-Lasting Strip-Till Applications

Strip-till applications are the perfect time to place liquid fertility where the crop needs it, with the assurance that nutrients will be available when and where you need them.

Strip-till combines the best features of no-till and conventional tillage systems. Tilled strips that will house the seed row reside alongside undisturbed bands of crop residue that shelter the soil and conserve moisture. Growers who want to practice Responsible Nutrient Management, have poorly drained soils or are apprehensive about areas with poor soil structure can benefit from using strip-till in their operations.

Strip-till accelerates the warming and drying of the soil in the spring, which stimulates earlier and deeper root growth in field crops such as corn. It can also increase air circulation and improve aerobic conditions.

One of the biggest advantages of strip-till is that nutrients can be placed into the root zone where there is less potential they will be diverted or immobilized by crop residue. Dual placement of phosphorus (P), potassium (K) and micronutrients near the seed zone and placement of nitrogen beneath the seed zone, improves the proximity of nutrients to the roots as they grow and develop.

Successful strip-till applications match the right nutrients with the right timing, according to geographic area. For example, it isn’t advisable to apply nitrogen in the fall in areas that have large amounts of rainfall because of the potential for leaching. However, in arid areas growers can successfully apply nitrogen in the fall.

An effective combination for strip-till applications is Pro-Germinator for phosphorus and Sure-K for potassium, along with microLink for balanced micronutrient application. For nitrogen applications, AgroLiquid offers a number of choices from their N-Suite to meet the needs of any strip-till situation.

Agronomists at the North Central Research Station in St. Johns, Mich., conducted a two-year trial that assessed the effect of fertilizer timing and placement on strip-till corn (2012 Research Report, Effect of Fertilizer Timing and Nutrient Placement in Nutri-Till/Strip-Till Corn).

Strip-Till 2012-Research-Report-18_GraphResearchers found that deep fall placement was only slightly lower in yield than shallow fall placement. And both spring and fall placement of P, K and micronutrients resulted in similar yields. The study also established that the highest yield for both years was where all of the fertilizer was applied in the spring with the strip-till operation. This treatment resulted in corn that was noticeably ahead of the other treatments.

Growers are often apprehensive about nutrient applications during fall strip-till because they worry nutrients will not be available for crops the next year. AgroLiquid product formulations promote stability and protect nutrients from tie-up and loss. They are a great fit for conservation tillage cropping systems. Best of all, growers can apply fertilizer with confidence during strip-till, having the peace of mind that nutrients will be available at the right time and in the right place.


Phosphorus in Plants

There is no substitute for phosphorus in high-value crop production.

Phosphorus may not be first in the N-P-K lineup, but don’t underestimate its importance to plant growth and development. Many essential plant processes would not occur without it. There is no substitute for phosphorus if your primary goal is to maintain first-rate crops and high yields.

Every living plant cell contains phosphorus as part of the substances that carry the DNA code of living things. Phosphorus directly influences reproduction, photosynthesis, cell division, root development and energy storage. Some flowers and fruit also contain high concentrations of phosphorus.

Correct placement of phosphorus near the root zone is crucial because of its low mobility in the soil. The greater the distance the root must cover to reach the phosphorus, the greater the chance it will be unavailable when the plant needs it. Most plant roots only explore about 3% of the soil around them. Stunted growth, spindly stalks, distorted leaves and purpling are all signs of a phosphorus deficiency, as well as reduced blooms and/or onset of fruit.

In any given year, crops take up a combination of phosphorus applied in the current cropping year and phosphorus applied in previous years. Soil pH or acidity influence phosphorus reactivity and determines the speed and type(s) of insoluble phosphorus that is most likely to form. Phosphorus fertilizers are generally very inefficient and only a small portion of what is applied typically gets into the crop.

What’s new on the phosphorus front at Agro-Culture Liquid Fertilizers?

Pro-Germinator™ utilizes carbon as a building block to form long phosphorus chains that provide protection for the nutrient until the plant is ready to absorb it. The phosphorus compound isn’t subject to movement from the cropping environment because it reaches its intended destination the first time. This creates an optimum situation and leads to greater use efficiency.

Pro-Germinator™ performance is one of the standards that AgroLiquid uses to evaluate experimental phosphorus products. In 2012, researchers evaluated two experimental phosphorus fertilizers, SP-12 and ZP-12, on corn, soybeans and various vegetable crops. Both products, in addition to being N-P-K products, have added sulfur to help meet more complete crop requirements. This presented an increased risk for injury if the product comes into contact with the seed, unlike Pro-Germinator™, which is safe for in-furrow applications up to 10 gal/A on field corn.

Experimental Phosphorus Placement Options for Corn

This trial evaluated in-furrow and 2×2 placement options for effects on establishment, yield and stand. Pro-Germinator yields were similar for both application methods (197.2 vs. 194.5 bu/A). When comparing 2×2 applications, SP-12 and ZP-12 yields were numerically higher, but this did not hold true for in-furrow applications. Testing will continue to verify the conclusion that SP-12 and ZP-12 cause yield loss when applied in-furrow. (See Corn Planter Program Additives)


Experimental Phosphorus Applications on Soybeans

In-furrow and 2×2 applications of Pro-Germinator, SP-12 and ZP-12 were made with rebounders or tubes in the bottom of the furrow. Averages on all locations show SP-12 increased soybean yield 2 bu/A over that of Pro-Germinator. This may be enough of an increase to continue further testing during the 2013 growing season.


For the full research results see “Experimental Phosphorus Placement Options (NCRS 12-309, 719)” and “Experimental Phosphorus Fertilizers on Soybeans (NCRS 12-709, 1002, 1101)” in the 2012 Research Report.