A team led by Torgny Nasholm, a forestry professor at the Swedish University of the Agricultural Sciences, created a fertilizer laced with arginine, Vasterbotten-Kurrien reported. The amino acid improves sperm production and blood circulation in the genital area.
Nasholm found that trees given the fertilizer had stronger root systems. As an additional environmental benefit, the trees were able to draw nitrogen more effectively, allowing less nitrogen fertilizer to be used.
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