Spinner-disc spreaders are commonly used for applying lime and fertilizer to agricultural fields. Uniform and accurate application of lime and fertilizer is essential. The performance failures of agricultural materials can be directly related to improper and uneven application, careless equipment operation, and the separation of blended material due to size and density differences. The uneven distribution of lime and fertilizer can reduce yields. Effects of uneven lime or fertilizer distribution are most notable in fields that are low in soil fertility, because the response to applied nutrients is greatest on these soils. Proper setup and calibration of application equipment is important to assess its performance and attain satisfactory results. Even new and well-maintained equipment needs calibration checks regularly before and during the growing season. This is especially important when changing from one type of material or blends to another, when changing application rates, and when altering speeds or other operating conditions.
Status and Revision History
In Review on Feb 20, 2009
Published with Minor Revisions on May 16, 2012
Published with Minor Revisions on May 21, 2021