A study by Harvard researchers showed that men with the highest intakes of pesticide-laden fruits and vegetables (2.1 servings/day) had a 49% lower total sperm count and a 32% lower percentage of morphologically normal sperm, when compared to men with lower intakes (<0.5 servings/day).

I learned about this fact from: http://humrep.oxfordjournals.org/content/early/2015/03/27/humrep.dev064.full