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A Memorable Meeting, February 1994, Fathi Habashi
A Memorable Meeting, February 1994, Fathi Habashi
Fathi Habashi
Decision taken at the Steering Committee Meeting of the International Mineral Processing Congress in San Francisco February 1994 to name the IMPC Award.
Using Hydrophilic Polymers To Control Nutrient Release, Robert Mikkelsen
Using Hydrophilic Polymers To Control Nutrient Release, Robert Mikkelsen
Robert Mikkelsen
Using diverse technological approaches, many types of delivery devices have been used to supply plant nutrients at a controlled rate in the soil. One new approach is the use of hydrophilic polymers as carriers of plant nutrients. These polymers may be generally classified as 1) natural polymers derived from polysaccharides, 2) semi-synthetic polymers (primarily cellulose derivatives), and 3) synthetic polymers. By controlling the reaction conditions when forming the polymers, various degrees of cross-linking, anionic charge, and cationic charge can be added, thereby changing their effectiveness as fertilizer carriers. When fertilizer-containing solutions are mixed with hydrophilic polymers to form a "gel" …