Calcium Products - Displaying items by tag: ag
Calcium Product 98G



It is not the strongest of the species that survive, nor the most intelligent, but the one most responsive to change.  ~Author unknown

Life is about change. Change you socks, change your shoes, make change, change a tire, change the channel, a change in the weather, change seed varieties, change implements. Every day we change hundreds of things, many without thinking about it. Change is not a bad thing. Driving to work today in almost blizzard conditions I cannot wait for the weather to change.

If things didn’t change farming would not be possible. Farming needs change. The sky changes from night to day, the soil changes from black to rows of green. If things didn’t change you could not grow a crop. If you don’t change the way you farm from year to year, how do you expect to stay profitable?

What about your input supplier? Have they recommend changes to keep you profitable? What about you supplier that has not been able to get ag lime spread for the past 3 years because the weather has changed? Many climatologist are predicting that winters will be much more severe than the past 10 years. If they have not been able to spread the past three, are the next 10 going to be any better?

SuperCal 98G is a big change for farmers and agronomists. I understand that it is difficult understand how applying less lime gets better results. This is a huge change in thinking. Over ten years SuperCal 98G has shown to increase soil pH and yields. We would love to Prove It to you. Contact one of our sales representatives to find out how you can conduct an on farm trial.

Greg Ervin, MN, WI, ND, SD, North East IA, Canada
Glen Howell, NE, South and East IA, IL, MO, KS
Craig Dick, all other areas


SuperCal SO4M on Field Corn Yield


• Planted field Corn (Novartis 2555 Bt) on May 8, 1998 at 33,000 SPA
• 10 acre field
• 5 Replications
• 2 Treatments



Statistical Treatment Comparisons


Project Code: 98-61015

Location: Hollandale, MN

Sponsor: Calcium Products, Inc.

By: Agri-Growth, Inc.



Yield bu/A

SuperCal SO4M

300 lbs/A

156.7 a

Untreated Control


144.3 b


Means followed by the same letter do not significantly differ (P=.05 Duncan's MRT)
Field corn (Novartis 2555 Bt) planted on May 8, 1998 at 33,000 SPA
SuperCal SO4M applied prior to planting
5 replications


SuperCal SO4 with Zn and N on Corn

SuperCal SO4 has been shown to increase nitrogen uptake as sulfur in SuperCal SO4 aids in the nitrification process. Calcium helps to stabilize nitrogen by decreasing volatilization loss. Calcium is essential to the biochemical process of plants to absorb nutrients. Adding SuperCal SO4 to your fertility program will make your expensive nitrogen and zinc work better.


SuperCal SO4 on Soybeans with White Mold

Plot Map


• Planted soybeans (Stine 2500) on May 16, 1998 at 50 lbs/A
• 20 acre field
• 5 Replications
• 2 Treatments

CaSO4 Soybean with White Mold Yield Map 1998



The average of the areas receiving SuperCal SO4 yielded 48.4 bushels, the areas that did not get treated averaged 38.6 bushels, which was a difference of 9.8 bu/A. At $10 soybeans that is a return of over $65 per acre.


SuperCal SO4 and Nitrogen Utilization on Corn

SuperCal SO4 was applied to a high pH 7.5 field with corn at Cedar Falls, Iowa in 2002. Four replications of six treatments were arranged in a randomized complete block design. This was an excellent year for corn and good yields were noted throughout the area. A moisture stress period was noted in midsummer, but timely rains contributed to good yields.

Yields increased from 207.6 bu/A for control to 221.8 bu/A with 300 lbs/A SuperCal SO4 applied at planting. A base rate of 140 lbs/A nitrogen (N) was applied as anhydrous ammonia to soybean ground, considering a rough credit 50 lbs. N/A for the contribution of soybeans in the rotation. However, the addition of 80 lbs N/A at sidedress time resulted in only a 2.1 bu/A yield increase over the 140 lbs N/A areas. One could speculate that the maximum nitrogen response rate had been reached with 140 + 50 + 80 = 270 lbs/A N with soybean credits. Yields did not increase with 300 lbs/A SuperCal SO4 plus 80 lbs N/A at sidedress time, and it is speculated the plants may have grown too much prior to the moisture stress period. Early application of SuperCal SO4 at planting may have contributed to promoting plant growth at the right time, and resulted in increased partitioning of photosynthates into the kernel.



SuperCal SO4 with Field Corn

Project Code: 99-61240
Location: Hollandale, MN
Sponsor: Calcium Products, Inc.
By: Agri-Growth, Inc.



• Field corn (Novartis NK3030) planted May 29, 1999 at 35,000 SPA
• Treatments applied prior to planting
• Treatments:
       o SuperCal SO4 at 50 lbs/A (banded 6" deep) and Urea at 30 lbs/A actual N
       o SuperCal SO4 at 50 lbs/A (banded 6" deep) (only)
       o Urea at 30 lbs/A & actual N (only)
       o Untreated control
• Five replications




Yield bu/A

SuperCal SO4 and

50 lbs/A
30 lbs/A actual N

151.2 a

Urea (only)

30 lbs/A actual N

148.7 b

SuperCal SO4 (only)

50 lbs/A

145.5 bc

Untreated Control


141.3 c

Yield means followed by the same letter do not significantly differ (P=.05 Duncan's)


SO4 on Corn and Soybean

A two treatment trial where two treatments are paired together in adjoining strips is a type of a randomized complete block design. This trial had ten paired strips, each containing one strip each of the two treatments.





Corn Harvest Analysis

This type of trial can be analyzed using a t-test, which determines if numerical difference between treatments are legitimate. Following is a "cookbook" approach to analyzing the data from a trial with up to ten double strips, each containing one strip each of the two treatments. The second and third columns are labeled "yield," but any type of data can be analyzed this way.


The difference between the two treatments is given in Cell 3. The number in Cell 8 is called the "t value" (be sure to record it without the negative sign, if Cell 3 us a negative number, that is, if treatment B has a higher yield than treatment A). We assess whether the difference between treatments (Cell 3) is real or whether it's due to random chance using the following test:

We're 90% sure the treatments really differ if Cell 8 is larger than: 1.860

We're 95% sure the treatments really differ if Cell 8 is larger than: 2.306

Therefore, the statistical confidence that there is a difference between these treatments is greater than 95%. So, the plots treated with  SO4 produced a significantly higher corn yield than those that were not treated.


Soybean Yield Analysis


For the soybean analysis, the statistical confidence appears to be less and the resulting conclusion is that the difference is not explained by the statistical model, meaning that there is not a real difference between the two yield values, despite the roughly 3 bu/A increase when using gypsum.



SuperCal SO4 on Alfalfa Yield

SuperCal SO4 on Alfalfa Yield

Location:          Hollandale, MN - 20 Acre Field

Date:               1999

Crop:               Alfalfa - 99-64220

                       Planted @ 16 lbs/acre

Treatments:      SuperCal SO4 applied at 300 lbs/acre

                       Applied March 16, 1999

                       Six replications



98G, pH, and Tillage Influence on Soybean and Corn Yield


A number of South Dakota soils are developing lower pH surface soils primarily due to the acidifying effect of added nitrogen. Two adjacent studies at the Aurora Farm (Brandt loams) were established to adjust soil pH by either lime or sulfur additions to determine the long term effect of soil pH on corn and soybean yield under both conventional and no-till systems.

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