Method for automatically supplying nutritive compositions to plants in optimum amounts
Abstract
Abstract CONSTANT NUTRIENT COMPOSITION CORRESPONDING TO PREDETERMINED NUTRIENT PROPORTIONS AT OPTIMUM GROWTH IS AUTOMATICALLY MAINTAINED IN AN AQUEOUS CULTIVATION MEDIUM FOR PLANTS WITHOUT THE NEED FOR REPLACING THE MEDIUM WITH A FRESH SOLUTION. MINERAL NUTRIMENT IS SUPPLIED TO THE CULTIVATION MEDIUM CONSISTING ESSENTIALLY OF WATER AND A NUTRIENT SALT MIXTURE IN RESPONSE TO VARIATIONS IN HYDROGEN ION CONCENTRATION AND CONDUCTIVITY FROM AT LEAST THREE NUTRIENT SOLUTIONS, THE FIRST SOLUTION BEING ALKALINE AND CONTAINING A PORTION OF THE NUTRIENTS, THE SECOND SOLUTION BEING ACIDIC AND CONTAINING A SECOND PORTION OF THE NUTRIENTS, AND THE THIRD SOLUTION CONTAINING THE REMAINDER OF THE NUTRIENTS.
Inventors
- 👤 Nils Torsten Ingestad
- 👤 Ernst Goran Von Haartman
Bibliographic Details
Claims Analysis
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