4. Discussion
Though synthetic fungicides are useful, prolonged usage could cause some health problems (Al-Samarrai et al., 2012). So, there is an increasing interest in finding alternative fungicides with safe and negligible risk to human health and the environment (Martínez-Romero et al., 2008). Essential oils and aromatic volatile products of secondary metabolism in plants are usually some natural antifungal agents with potential applications to control the growth of phytopathogenic fungi that cause crop diseases (Bajpai et al., 2007; Al-Reza et al., 2010). Thus, Z. clinopodioides is more likely to be developed into a novel fungicide against phytopathogenic fungi