Ever wonder just how good the lime is from your local quarry? The Iowa Department of Agriculture and Land Stewardship, Commercial Feed and Fertilizer Bureau checks all the quarries that sell lime into Iowa. It has released a new Ag Limestone Quarry Certification Report. It can be accessed on their site by clicking on the hyperlink above.
The Fertilizer bureau does not check every quarry every quarter so you may have to check some old reports to find your quarry.
If your soil test calls for 2 tons of 90% ECCE ag lime, and your local quarry only has 45% ag lime then you will need to apply 4 tons to meet the requirements of your soil test. This is why many farmers complain that they applied ag lime and saw no results, they didn't apply enough to do any good. More importantly they applied too much product that will never do any good for them, wasting valuable input dollars.
Much of the limestone in Iowa either has too much inert ingredients (clay, sand, marl, etc.) or is not crushed fine enough to get results in your life time. Make sure your money is working for you and not buying garbage.
SuperCal 98G is crushed to minus 100 mesh, meaning it's finer than ag lime and pelletized to reach the field where it goes to work making you money instantly. The purity and fineness combine to make it 5 times more effective than 1 ton of ag lime.
The Blogronomist is maintained by Craig Dick, head blogronomist and VP of Sales and Marketing. Here you will find a wide array of blog articles from Craig and expert guests on topics related to soil and crop health, farming, and so much more. If it’s not here, ask us!