Surprisingly, rubber tires are abundant in zinc, a micronutrient essential to corn, sweet corn, soybean, and cucumber production. When the tires are reduced to nano-particles and fed to hydroponic crops, plants have been found to yield more shoots and fruit, and retain the element better than commercial zinc-sulfate fertilizer.
In order to prepare the fertilizer, rubber tires are placed in a ball mill with silicon wastes and pulverized for five hours. This produces the nano-particles essential to the fertilizer's effectiveness and can be combined with ground tire rubber or rubber ash to enhance potency. The fertilizer has proven highly effective in cucumber test crops.
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Friday, 11 October 2013