(from the article `weather modification`) ...hail damage. Some operations have attempted to put so many nuclei into the supercooled parts of cumulonimbus that they would be almost totally ... Found on http://www.britannica.com/eb/a-z/o/42
Planting on top of an existing garden or lawn. Rye grass over lawns for winter. Wildflower seed in meadows. Found on http://www.encyclo.co.uk/local/20077