20090031627 | METHOD AND APPARATUS FOR REDUCING FERTILIZER USE IN AGRICULTURAL OPERATIONS - An agricultural method is provided for reducing the amount of fertilizer needed to effectively grow various plants as well as reducing fertilizer run-off, therefore minimizing fertilizer contamination of groundwater. A composition and/or material are also provided to facilitate the agricultural method. The material may include a semi-permeable or selectively permeable membrane made out of, for example, activated charcoal. An apparatus is also provided that incorporates the composition and/or material. | 02-05-2009 |