How long does it take for dry lime to work?
Since water is required for lime to react with the soil, effects of a lime application will be slower in a dry soil. It often takes a year or more before a response can be measured even under perfect conditions. However, a response may be observed within weeks of the application when soil pH is extremely low. It is important to apply lime immediately after the growing season or crop removal to allow lime to react, correcting soil pH before the next growing season.
The reactivity time also depends on the type of lime used. Liming materials differ widely in their neutralizing powers due to variations in the percentage of calcium and/or magnesium. Usually, liming materials with a high calcium carbonate equivalent, or CCE (the percentage of usable lime in a liming product), tend to neutralize soil acidity faster than those with a low CCE. The coarseness of the liming material will also influence how fast the lime will react. In other words, the finer the liming material, the faster it will influence the soil.
AGGRAND Liquid Lime is very fine lime held in suspension so it works immediately when applied to the soil. AGGRAND Liquid Lime can work alone or in addition to a regular liming program.
How often should lime be applied?
The answer to this question depends on a variety of considerations. A soil with a low CEC (cation exchange capacity; the capacity of a plant and soil to exchange nutrients) does not require a lot of lime to correct soil pH but may need to be limed frequently. A soil with a high CEC requires a large amount of lime to initially correct pH, but it may be several years before another lime application is needed due to its high buffering capacity. As fertilizer is applied to enhance forage or crop production, the removal of essential plant nutrients from the soil also increases. As a result, lime may be needed more frequently to replenish removed nutrients. For example, the rate of nutrient removal from a pasture being hayed is much greater than a pasture being grazed. Therefore, the hay field may need to be limed more often.