Absolutely you can use lower rates with SuperCal 98G
I received by email a copy of Crop Observation and Recommendation Network C.O.R.N Newsletter 2009-09 April 14, 2009- April 21, 2009, published by Ohio State. Here's my response to their effort to disprove pelletized lime.
A) Pelletized Lime, Can I Get Away with Lower Rates? - R. Mullen and K. Diedrick
This question comes up every year - can I put down a lower rate of pelletized lime and achieve the same result as typical ag-lime at a higher rate? Perhaps, but using a fraction of the recommended rate (say a fourth or a third) will likely not achieve the desired result. It is not that pelletized lime is a poor lime source. It is an effective lime source because it is very fine material as well as easy to handle and apply using broadcast fertilizer spreaders; however, it simply cannot neutralize soil acidity any better (or faster) than conventional ag lime materials. SuperCal 98G pelletized lime does change the pH of soils faster and more effectively than ag lime. In trials we have seen adjustments to the soil in as little a 2 weeks. Last year when applying 98G to a grid sampled field we changed the pH 1 point (not 0.1 but 1.0 whole point) in one growing season. This customer's father applied 2 tons of lime to his farms and there was no pH adjustment a year later. Ohio uses a term - effective neutralizing power (ENP) - to compare the strength of different liming materials. The ENP of a given liming material is a function of three things - total neutralizing power (TNP-depends upon purity of the source and the ratio of calcium to magnesium), fineness (size of the particles), and moisture content. ENP does not give more value for a finer grind of lime. Since lime is not very soluble the finer its ground the more effective it is. ENP gives 100% credit for 60 mesh lime. Because 100 mesh has a surface area almost twice that of 60 mesh it should get a rating of 200% on the ENP scale. Most ag lime averages 25 mesh which makes...
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