Liquid Fertilizer Treatments of Nursery Soils-Their Advantages and Shortcomings
The use of liquid fertilizers in forest nurseries was introduced in the summer of 1932 when several blocks in two Wisconsin nurseries were treated with a solution of ammonium sulfate, diammonium phosphate, and potassium nitrate. Because of the spectacular response of seedlings to liquid treatments, the method attracted the immediate attention of nursery specialists. Within a few years, the application of fertilizer solutions through sprinkling cans, pressure sprayers, and overhead systems became a common practice in many nurseries (Wilde, 1935). At present, the practice is widely used, with or without justification, in this country and abroad.
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Author(s): S. A. Wilde
Publication: Tree Planters' Notes - Issue 42 (1960)