ILLINOIS ASSOCIATION OF AGGREGATE PRODUCERS
  • Home
  • Membership
    • Producer Membership
    • Associate Membership
    • Clean Fill (CCDD) Membership
    • Student Membership
    • Committee Membership
  • Learn More
    • About the IAAP >
      • Board of Directors, Staff and Committee Organization
      • History
    • What Aggregates & Industrial Minerals Do For You
    • For educators >
      • Rocks, Minerals & Mining workshop for Illinois teachers
      • Resources for teachers
      • Teaching Enhancement Grant
    • For students >
      • Education Foundation Scholarship
    • Working in the industry
    • Advocacy and industry topics >
      • Permission to Mine
      • Safety and Health
      • Environmental
      • Sustainability
      • Economic Benefits
      • Trucks & Traffic
      • Noise
      • Clean Construction & Demolition Debris Disposal
    • Community resources >
      • For Members
      • For general public
  • Find products
    • Stone, sand, gravel or industrial minerals
    • Goods and Services for Industry
    • Agricultural Lime
    • Safety Slogan T-shirts order
  • News and events
    • What's happening
    • Register for upcoming events
    • Update Newsletter
    • Convention & Safety Conference
    • Golf Outing
    • Rocks Minerals Mining workshop for Illinois teachers
  • Member Resources
    • Emerging Leaders Program
    • Committees >
      • Safety Committee
      • Environmental Committee
      • PIE Committee
      • Sustainability Committee
      • Specifications / Technical Committee
      • Legislative Committee
      • Board of Directors
    • Awards and Certificates >
      • Rock Solid Safety
      • Innovative Safety
      • Community Relations
      • Environmental Excellence
      • Sustainability Award
      • Industry Leadership
      • Mining New Members
      • Safety Slogan Contest
    • Sales Tax Exemption for Mining Equipment
    • Permitting and Certification Program Guidance
    • Resource Bank
    • Webinars and videos
    • Insurance Safety Group
    • Student Members Seeking Career or Internship Opportunities
  • Contact Us & password help
  • Home
  • Membership
    • Producer Membership
    • Associate Membership
    • Clean Fill (CCDD) Membership
    • Student Membership
    • Committee Membership
  • Learn More
    • About the IAAP >
      • Board of Directors, Staff and Committee Organization
      • History
    • What Aggregates & Industrial Minerals Do For You
    • For educators >
      • Rocks, Minerals & Mining workshop for Illinois teachers
      • Resources for teachers
      • Teaching Enhancement Grant
    • For students >
      • Education Foundation Scholarship
    • Working in the industry
    • Advocacy and industry topics >
      • Permission to Mine
      • Safety and Health
      • Environmental
      • Sustainability
      • Economic Benefits
      • Trucks & Traffic
      • Noise
      • Clean Construction & Demolition Debris Disposal
    • Community resources >
      • For Members
      • For general public
  • Find products
    • Stone, sand, gravel or industrial minerals
    • Goods and Services for Industry
    • Agricultural Lime
    • Safety Slogan T-shirts order
  • News and events
    • What's happening
    • Register for upcoming events
    • Update Newsletter
    • Convention & Safety Conference
    • Golf Outing
    • Rocks Minerals Mining workshop for Illinois teachers
  • Member Resources
    • Emerging Leaders Program
    • Committees >
      • Safety Committee
      • Environmental Committee
      • PIE Committee
      • Sustainability Committee
      • Specifications / Technical Committee
      • Legislative Committee
      • Board of Directors
    • Awards and Certificates >
      • Rock Solid Safety
      • Innovative Safety
      • Community Relations
      • Environmental Excellence
      • Sustainability Award
      • Industry Leadership
      • Mining New Members
      • Safety Slogan Contest
    • Sales Tax Exemption for Mining Equipment
    • Permitting and Certification Program Guidance
    • Resource Bank
    • Webinars and videos
    • Insurance Safety Group
    • Student Members Seeking Career or Internship Opportunities
  • Contact Us & password help

Aglime  or  Ag-lime  or  Agricultural Lime

Whatever you prefer to call it, many IAAP member companies supply this vital agricultural amenity to farmers in Illinois and neighboring states.  
Aglime producers and farmers, you may download the 2022 edition of the Illinois Voluntary Limestone Program Producer Information booklet, detailing testing results, in the Links to Information section on this webpage.
  • ​LIME QUALITY—DOES IT MATTER?
  • ​Illinois Voluntary Limestone Program
<
>
​There are four major factors that affect the successful neutralization of soil acidity by agricultural limestone. They are: 1) lime rate: 2) lime purity…compared to pure calcium carbonate …expressed as calcium carbonate equivalent (CCE); 3) lime particle size distribution or fineness of grind; and 4) degree of incorporation or mixing with the soil. 

Soil test laboratories make lime recommendations based on a measurement of soil pH (active acidity) and some indication of soil texture or buffer capacity, which is the resistance to change in soil pH. Most soil testing laboratories usually assume the aglime has a CCE of at least 80 to 90 percent and an excellent fineness of grind (i.e. large majority of particles passing a 50 to 60-mesh sieve). 

Different states have different regulations governing lime quality, and many land grant universities offer guidance in selecting good quality aglime. Often, lime quality is expressed as “effective calcium carbonate equivalent”, “relative neutralizing value”, or “effective neutralizing material.” These expressions involve some consideration and factoring of both lime purity and fineness of grind.

The rate of reaction or the dissolution of lime particles increases as their size decreases. For example, after 3 to 4 years, aglime particles larger than 10 to 15-mesh (about 1 to 1.7 millimeters in diameter) will have dissolved little, while the majority of aglime particles in the 50 to 60-mesh size range will have dissolved. Particles larger than 10 to 15-mesh have little effect on soil acidity, while the smaller, finer-grind particles react rapidly to neutralize soil acidity. It may take twice as long (or longer) for particles between 15 to 30-mesh to react, compared to particles smaller than 50 to 60-mesh (about 250 to 300 micrometers), assuming their purity or CCE is the same.

With the expansion of conservation tillage and no-till systems, there are fewer opportunities to incorporate aglime via plowing or discing. So, lime quality may be even more important in these reduced-tillage systems than in older, traditional tilled systems. 

High crop yields are essential to economic success in farming. Most farmers and crop advisers recognize the importance of managing soil pH at optimum levels in the crop root zone to achieve high yields. When acidity increases to the point that root growth slows, nutrient and moisture uptake are impaired, the function of certain herbicides becomes limited, and yields decline…can one afford to purchase and apply poor to mediocre-quality aglime? 

Because of the recent changes in production costs associated with higher energy costs, farmers and their crop advisers are seeking greater confidence that each input will result in economic benefits. When purchasing and applying aglime to acid soils, it pays to know both the aglime purity and fineness of grind.

From Fall 2006, No. 5, Agri-Briefs, Potash and Phosphate Institute (Download)
​Members of the IAAP's Aglime committee are committed to a partnership with the Illinois Department of Transportation (IDOT) and Illinois Department of Agriculture (IDOA)  to ensure the products produced and supplied by our members for agricultural use are the best quality available.

The Illinois Department of Transportation (IDOT) will begin the sampling window on April 1st and continue until May 24th and has committed to have all samples delivered to Illinois Department of Agriculture (IDOA) by June 7th. 
 
Aglime producers must contact their local IDOT district office to make a request that samples be taken of your aglime stockpiles.  IDOT inspectors will use an aglime submittal form gathering information from producers that will be used to ensure test results are conveyed to the appropriate person at the producer company and enhance the information contained in the Illinois Voluntary Limestone Producer Information booklet. IDOA will not accept aglime for testing directly from a producer; aglime samples must remain in IDOT possession until arriving at the IDOA lab.  IDOT inspectors will not offer aglime producers the option of a split sample.  You may take your own sample for independent testing; however, limited retesting is still available as outlined below.
 
IDOA expects to begin testing samples in June.  Testing will be done on ICP equipment using an approved ASTM method and anticipates completing testing by the end of July.
 
Data entry will be done into an Access database that can produce batches of results in spreadsheet form.  These batches will be passed along to IAAP who will send results to individual producers via email. 
 
Producers may request limited retesting of aglime samples if they believe the testing results are inaccurate.  A retest request must be made to the IAAP and done so during the time the IDOA lab is conducting aglime testing.  Retests will be done using the original sample.  Prior to publication of the Illinois Voluntary Limestone Producer Information booklet, a producer may ask the IAAP to omit one or more of their aglime results.  Test results from independent laboratories will not be published in this booklet.
 
IDOA will use email to send Limestone Analysis Reports to producers when all laboratory analysis are completed. 
 
IAAP will compile the Illinois Voluntary Limestone Producer Information booklet for publication by early August.
Links to Information
2022 Illinois Voluntary Limestone Program Producer Information (Limestone Book)
​Illinois Agronomy Handbook
​Aglime Producers
Request Aglime Facts Booklet
Calculating Effective Neutralizing Value (ENV) Using Data From Limestone Book
Ag-lime...It's Good for the Environment
more information below

Links to more information
Illinois Department of Agriculture's webpage where the Limestone Book is published
Ag-lime...It's Good for the Environment
Improving Yields Reduced by Excess Water (link to Delta Companies website)
Another Look at Liming Acid Soils
Dial in Soil pH article from Farm Journal Magazine (Link to Valley View Industries Website)
Keep a Log of Soil Acidity 
Aglime, Why Quality Counts ~ Aglime is used to neutralize soil acidity, reduce certain toxicities, increase fertilizer efficiency and improve soil physical and biological conditions.
Aglime Basics for Crop Production ~ Today's agriculture is all about sustainability.
7 Reasons Why It Is Never A Good Time To Cut Aglime Use ~ Is soil acidity robbing you of crop profits?
Soil pH and the Availability of Plant Nutrients
Liming Requirement
Soil and Fertilizer Magnesium
Magnesium: A Forgotten Element in Crop Production
Are You Overlooking Magnesium? 

A guide to selecting agricultural limestone products (Illinois Mineral Note 73)
Aglime Council of Indiana
International Plant Nutrition Institute
Some pages on this website require a password to access. If you need help with the password, contact the IAAP using the link below.
Home
About
Contact
Members of the Illinois Association of Aggregate Producers are building Illinois' future. 
You may use this website to discover how we are doing this and to join us in the effort.
1115 S. 2nd. Street
Springfield, IL 62704
217.241.1639 (phone)
217.241.1641 (fax)
What Aggregates & Industrial Minerals Do For You