Three Rocks -- For Better Planting Survival
When I was in Spain a year ago I saw thousands and thousands of hectares of new pine plantation with 80 to 90 percent survival in regions receiving an average annual precipitation of only 12 to 16 inches. Most of the precipitation came during the nongrowing season, with the summers long, completely dry, and scorching hot. Yet the Spanish foresters were achieving this survival without supplemental watering after planting.
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Author(s): Roland Rotty
Publication: Tree Planters' Notes - Issue 33 (1958)