The scientific explanation. Calcium is a required element for tuber development. A calcium deficiency in plants results in dividing cells being unable to stay bound together. This causes poor quality potatoes such as reduced size, growth cracks and hollow heart. ENCOURAGE NANOCAL is a unique formulation of calcium carbonate. ® ® Typical calcium soil additives have particle sizes of up to 200 microns, too big to be readily absorbed by roots. NANOCAL is milled to less than one micron. This greatly expands the calcium surface area, and allows an order of magnitude more particles in solution, providing a denser field of calcium particles for uptake. Foliar-applied calcium does not translocate to tubers. The only efficient way to move calcium into developing tubers is through root and tuber uptake. Soil-applied NANOCAL's particle size allows immediate movement into the meristematic region of growing roots. Soil-applied NANOCAL calcium particles are immediately available to developing tubers. Benefits of improved calcium uptake at tuber initiation include: * Dramatic reduction in hollow heart * Improved shelf life and storability * Better uniformity at maturity * Increased firmness * Increased yield Learn more at oroagriusa.com ENCOURAGE NANOCAL is a proprietary trademark of Oro Agri Inc. ENCOURAGE NANOCAL is not currently registered in Oregon. Always read and follow label directions.http://www.oroagriusa.com